cdna cloning, genomic structure and expression analysis of the goose (anser cygnoides) mhc class i provide data for studies on avian disease resistance, goose mhc class i cdna (ancy-mhc i) was cloned from a goose cdna library, it's genomic structure and expression analysis were investigated. the mature peptides of ancy-mhc i cdna encoded 333 amino acids. the genomic organization is composed of eight exons and seven introns. based on the genetic distance, six ancy-mhc i genes from six individuals can be classified into four lineages. a total of nineteen amino acid positions in peptide-bindi ...200516005079
occurrence of cryptosporidium oocysts in wrinkled hornbill and other birds in the kuala lumpur national zoo.the occurrence of a coccidian parasite, cryptosporidium, among birds in the kuala lumpur national zoo was investigated in this study. a hundred bird fecal samples were taken from various locations of the zoo. fecal smears prepared using direct smear and formalin ethyl acetate concentration technique were stained with modified ziehl-neelsen stain. samples positive for cryptosporidium with ziehl-neelsen stain were later confirmed using the immunofluorescence technique and viewed under the epifluor ...200516438177
first report of tyzzeria parvula (kotlán, 1933) klimes, 1963 (apicomplexa: eimeriidae), in swan goose anser cygnoides l., 1758, in brazil.this is the first description of tyzzeria parvula from the swan goose (anser cygnoides) in the state of rio de janeiro, brazil. fecal samples were collected from 15 swan geese, but only four of them shed oocysts in feces. after sporulation, the oocysts were spherical to sub-spherical, and measured 12.4 +/- 1.0 (11-15) x 10.4 +/- 0.8 mum (8-12). they presented a shape index of 1.2 (1.0-1.4), with a bi-layered wall that was 0.7 +/- 0.1 mum (0.6-0.8) thick. the outer side was smooth and colorless, ...200820059870
identification of differentially expressed genes between hepatocytes of landes geese (anser anser) and sichuan white geese (anser cygnoides).in this study, we examined gene expression in order to identify genes that are differentially expressed between the hepatocytes of sichuan white geese and landes geese. we hypothesized that such genes may be involved in the different predispositions between these two species to develop hepatic steatosis. rna was isolated from primary hepatocytes of the two species, and suppression subtractive hybridization was employed to screen for genes that showed differences in mrna expression. we built and ...201020238173
effects of linoleate on cell viability and lipid metabolic homeostasis in goose primary hepatocytes.studies have shown linoleate could not only promote cell viability but also affect lipid metabolism in mammals. however, to what degree these effects are mediated by steatosis in goose primary hepatocytes is unknown. in this study, the effect of linoleate on the lipid metabolic homeostasis pathway was determined. we measured the mrna levels of genes involved in triglyceride synthesis, lipid deposition, ß-oxidation, and assembly and secretion of vldl-tgs in goose (anser cygnoides) primary hepatoc ...201121295151
permanent genetic resources added to the molecular ecology resources database 1 february 2010-31 march 2010.this article documents the addition of 228 microsatellite marker loci to the molecular ecology resources database. loci were developed for the following species: anser cygnoides, apodemus flavicollis, athene noctua, cercis canadensis, glis glis, gubernatrix cristata, haliotis tuberculata, helianthus maximiliani, laricobius nigrinus, laricobius rubidus, neoheligmonella granjoni, nephrops norvegicus, oenanthe javanica, paramuricea clavata, pyrrhura orcesi and samanea saman. these loci were cross-t ...201021565086
seasonal dynamics of wintering waterbirds in two shallow lakes along yangtze river in anhui province.the shallow lake wetlands in the middle and lower yangtze river floodplain are important wintering and stopover habitats for migratory waterbirds on the east asia-australia flyway. with increasing fishery practices in recent years, however, the wetlands have deteriorated significantly and now threaten wintering waterbirds. to gain insight into the influence of deteriorating wetlands on waterbirds, we conducted a survey of wintering waterbird species, population size, and distribution across 11 b ...201122006808
ecology of the tick-borne phlebovirus causing severe fever with thrombocytopenia syndrome in an endemic area of china.severe fever with thrombocytopenia syndrome (sfts) is caused by sfts virus (sftsv), a tick-borne phlebovirus in family bunyaviridae. studies have found that humans, domestic and wildlife animals can be infected by sftsv. however, the viral ecology, circulation, and transmission remain largely unknown.201627035712
molecular identification of enterocytozoon bieneusi, cryptosporidium, and giardia in brazilian captive birds.a total of 85 fecal samples from captive birds collected from october 2013 to september 2014 in uberlândia and belo horizonte in the state of minas gerais (brazil) were evaluated for the presence of enterocytozoon bieneusi, cryptosporidium, and giardia by pcr. of these, three birds were found positive for e. bieneusi (3.5%), two for cryptosporidium (2.3%), and one for giardia (1.2%). two genotypes of e. bieneusi were detected by nucleotide sequence analysis of the its region, genotypes d and per ...201727815734
cloning, characterization, and expression analysis of lgp2 cdna from goose, anser cygnoides.laboratory of genetics and physiology 2 ( lgp2: ) is a homologue of the retinoic acid inducible gene-i and melanoma differentiation associated gene 5 that lacks the caspase activation and recruitment domain required for signaling. it plays a pivotal role in host immune response. in this study, we cloned and characterized the full-length open reading frame ( orf: ) sequence of lgp2 in the qingyuan goose (anser cygnoides) and evaluated the mrna expression of this gene post infection with an h5n1 h ...201627143779
malignant sertoli cell tumor in a goose (anser cygnoides domesticus).this paper describes the pathologic features of a malignant sertoli cell tumor found in an adult goose (anser cygnoides domesticus). at necropsy, in addition to one large tumor mass (15 cm in diameter), multiple small tumor masses were observed over the peritoneum and mesenterium in the coelomic cavity. the large tumor mass was composed of sheets, lobules, and small islands of tumor cells, and elongated tumor cells lying perpendicular to fibrous connective tissue were characteristic. such histop ...201223397858
avian influenza surveillance in the danube delta using sentinel geese and ducks.highly pathogenic avian influenza (hpai) h5n1 virus incursions from migrating birds have occurred multiple times in romania since 2005. beginning in september 2008 through april 2013, seasonal sentinel surveillance for avian influenza a viruses (aivs) using domestic geese (anser cygnoides) and ducks (anas platyrhynchos) in the danube delta was established by placing 15 geese and 5 ducks at seven sites. tracheal and cloacal swabs, and sera collections (starting in 2009) were taken monthly. we stu ...201424795823
identification of type iii interferon (ifn-λ) in chinese goose: gene structure, age-dependent expression profile, and antiviral immune characteristics in vivo and in vitro.type iii interferons (ifn-λ1/λ2/λ3, also known as il-29/28a/28b, and ifn-λ4) are a recently discovered interferon group. in this study, we first identified the chinese goose ifn-λ (goifn-λ). the full-length sequence of goifn-λ was found to be 823 bp. there was only one open reading frame that contained 570 bp, and, encoded 189 amino acids. the predicted goifn-λ protein showed 78%, 67%, and 40% amino acid identity with duifn-λ, chifn-λ, and hifn-λ3, respectively. the tissue distribution of goifn- ...201728388308
trim25 identification in the chinese goose: gene structure, tissue expression profiles, and antiviral immune responses in vivo and in vitro.the retinoic acid-inducible gene i (rig-i) and the rig-i-like receptor (rlr) protein play a critical role in the interferon (ifn) response during rna virus infection. the tripartite motif containing 25 proteins (trim25) was reported to modify caspase activation and rig-i recruitment domains (cards) via ubiquitin. these modifications allow trim25 to interact with mitochondrial antiviral signaling molecules (mavs) and form card-card tetramers. goose trim25 was cloned from gosling lungs, which poss ...201627995135
identification of 2'-5'-oligoadenylate synthetase-like gene in goose: gene structure, expression patterns, and antiviral activity against newcastle disease virus.2'-5'-oligoadenylate synthetase-like (oasl) is a kind of antiviral protein induced by interferons (ifns), which plays an important role in the ifns-mediated antiviral signaling pathway. in this study, we cloned and identified oasl in the chinese goose for the first time. goose 2'-5'-oligoadenylate synthetase-like (gooasl), including an orf of 1527bp, encoding a protein of 508 amino acids. gooasl protein contains 3 conserved motifs: nucleotidyltransferase (ntase) domain, 2'-5'-oligoadenylate synt ...201627576097
antibodies to influenza a virus in wild birds across mongolia, 2006-2009.wild waterbirds sampled july 2006-september 2009 in mongolia were tested for antibodies to avian influenza (ai) virus with the use of a commercially available blocking enzyme-linked immunosorbent assay. antibodies were detected in 25% (572/2,282) of tested birds representing 26 species, and all antibody-positive samples were from 12 species in the orders anseriformes and charadriiformes. the highest antibody prevalence was in ruddy shelducks (tadorna ferruginea; 61.7%; n=261; 95% confidence inte ...201222740544
the life cycle and pathogenicity of coccicium eimeria nocens (kotlán, 1933) in domestic goslings.twenty-four 10-day-old, artificially reared, coccidia-free goslings (anser cygnoides var. domestica) were inoculated orally with 1.0x10(5)-1.0x10(6) sporulated oocysts of eimeria nocens, and killed at intervals from 30 to 336 hr postinoculation (pi). parts of the visceral organs, including intestines, kidney, liver, gallbladder, and spleen from inoculated goslings, were fixed and sectioned. the life cycle of e. nocens and histologic changes during infection were examined microscopically. the res ...200516419758
[genetic diversity of swan goose (anser cygnoides l.) in russia: analysis of the mitochondrial dna control region polymorphism].using to analysis of hypervariable fragment polymorphism in the control region of mitochondrial dna (268 bp), the genetic variability of swan goose anser cygnoides l., included in the first category of endangered species in the russian red book, has been investigated. samples from the two main groups nesting in russia-the far eastern group (khabarovsk krai, n = 38) and the dauric group (chita region, n = 10) were examined. eleven haplotypes were described. the genetic diversity of swan geese was ...201020536028
hepatic myelolipoma with systemic amyloidosis in a goose (anser cygnoides domesticus).we report here a case of hepatic myelolipoma with systemic amyloidosis in a goose (anser cygnoides domesticus), which died suddenly following the short history of weakness and greenish diarrhea. at necropsy, multiple yellowish-white foci were observed on the surface of the prominently enlarged liver. histologically, there were multiple foci of adipose tissue admixed with myeloid elements in various proportions in the liver as well as amyloid deposition in several organs including the liver, inte ...201020526044
complete mitochondrial genome of the swan goose (anser cygnoides l.) and its phylogenetic this study, we undertook the first complete the swan goose (anser cygnoides l.) mitochondrial genome. the total length of the mitogenome is 16,739 bp. it contains the typical structure, including 13 protein-coding genes, 22 transfer rna genes, two ribosomal rna genes, and one d-loop region. the overall composition of the mitogenome is a (29.2%), g (15.8%), c (32.8%), and t (22.2%). besides, the base preference of at was not determined. twenty-two kinds of trna were all typically cloverleaf st ...201625922959
patterns of variation of the major histocompatibility complex class iib loci in chinese goose (anser cygnoides).in order to understand the variations of genomic organization of the major histocompatibility complex (mhc) and provide data for the studies on disease resistance of avian species, the mhc class ii polymorphism in chinese z-goose was investigated for the first time in the present study. eight alleles, which probably came from different loci, were found in six different geese with only one obvious band in the restriction fragment length polymorphism data. the numbers of nonsynonymous substitution ...200919415264
description of the anser cygnoides goose karyotype.the karyotype of the domestic goose a. cygnoides was characterised on the basis of r and c bands. chromosomal preparations obtained from an in vitro culture of blood lymphocytes were stained by means of the rbg and cbg banding techniques. the first nine pairs of chromosomes were analysed by the r banding technique, while fourteen pairs of chromosomes were analysed by the c banding technique. the localisation of r bands as well as the sizes and positions of constitutive heterochromatin blocks wer ...200819055023
mitochondrial dna cleavage patterns distinguish independent origin of chinese domestic geese and western domestic has generally been assumed, based on morphology, that chinese domestic goose breeds were derived from the swan goose (anser cygnoides) and that european and american breeds were derived from the graylag goose (anser anser). to test the validity of this assumption, we investigated the mtdna cleavage patterns of 16 chinese breeds and 2 european breeds as well as hybrids produced between a chinese breed and a european breed. after 224 mtdnas, isolated from the chinese and european breeds, were d ...200616957989
genome and metagenome analyses reveal adaptive evolution of the host and interaction with the gut microbiota in the goose.the goose is an economically important waterfowl that exhibits unique characteristics and abilities, such as liver fat deposition and fibre digestion. here, we report de novo whole-genome assemblies for the goose and swan goose and describe the evolutionary relationships among 7 bird species, including domestic and wild geese, which diverged approximately 3.4~6.3 million years ago (mya). in contrast to chickens as a proximal species, the expanded and rapidly evolving genes found in the goose gen ...201627608918
eye preference for vigilance during feeding in coot fulica atra, and geese anser anser and anser cygnoides.most research in avian brain lateralisation has been done using birds under laboratory conditions rather than natural settings. i studied eye preference during feeding in coot and geese when head position only allows use of one eye for vigilance. birds regularly interrupt feeding to be vigilant. this behaviour is directed towards detecting predators. recently, evidence was found that birds might perform some kind of "low-cost" vigilance even during feeding. because coot and geese often turn thei ...200516323263
female-specific dna sequences in geese.1. the opae random primers (operon technologies, inc., ca) were used for random amplified polymorphic dna (rapd) fingerprinting in chinese, white roman and landaise geese. one of these primers, opae-06, produced a 938-bp sex-specific fragment in all females and in no males of chinese geese only. 2. a novel female-specific dna sequence in chinese goose was cloned and sequenced. two primers, cgsex-f and cgsex-r, were designed in order to amplify a 912-bp sex-specific polymerase chain reaction (pcr ...200312964618
[origin and differentiation of domestic goose breeds in china, inferred from mitochondrial dna polymorphism].mitochondrial dnas (mtdnas) of 138 samples from 11 domestic goose breeds in china were investigated by digesting, with 19 restriction endonucleases. of 19 enzymes used, seven (bcl i, dra i, eco rv, hae ii, hinc ii, kpn i, sac i) detected polymorphic patterns. by combining 27 restriction morphs, 138 individuals were classified into 6 mtdna haplotypes. phylogenetic tree was constructed by using upgma. there was no shared haplotype between yili breed and the other 10 breeds. genetic distance and up ...199810465896
molecular analysis of the immunoglobulin genes in goose.immunoglobulins play an important role in adaptive immune system as defense molecules against pathogens. however, our knowledge on avian immunoglobulin genes has been limited to a few species. in this study, we analyzed goose (anser cygnoides orientalis) immunoglobulin genes. three igh classes including igm, iga, igy and λ light chain were identified. the igm and iga heavy chain constant regions are characteristically similar to their counterparts described in other vertebrates. in addition to t ...201626921669
analysis of the complete mitochondrial genome of the zhedong white goose and characterization of numts: reveal domestication history of goose in china and understand the phyletic evolution of geese, the complete mitogenome of the zhedong goose was sequenced for the first time. it is composed of 37 genes and 1 control region, and the structure and arrangement of all genes sequenced are identical to those of other goose breeds. we confirmed the accuracy of the mitogenome sequence through rt-pcr and found numts from amplification in genomic dna. comparisons of the phylogenetic trees and sequences of geese that were suggested a clade of chinese gee ...201626611532
two low-molecular weight apoproteins (apovitellenins i and ii) from a lipoprotein of goose's egg yolk: a comparison with related part of a comparative study of egg yolk from different avian species, the major lipoprotein and its mixed apoproteins from the egg yolk of the chinese goose (anser cygnoides) have been prepared. from the apoprotein mixture, two new proteins, of molecular weight approximately 10000 and 22000 according to gel electrophoresis in detergent, have been isolated by gel-filtration chromatography in urea. the protein of lower molecular weight corresponds in amino acid sequence to apovitellenin i, a pr ...19827150114
transcriptome analysis and identification of differentially expressed transcripts of immune-related genes in spleen of gosling and adult goose.the goose (anser cygnoides), having high nutritional value, high-quality feathers and high economic benefit, is an economically important poultry species. however, the molecular mechanisms underlying the higher susceptibility to pathogens in goslings than in adult geese remains poorly understood. in this study, the histological sections of spleen tissue from a two-week-old gosling and an adult goose, respectively, were subjected to comparative analysis. the spleen of gosling was mainly composed ...201526402676
pathobiological characterization of a novel reassortant highly pathogenic h5n1 virus isolated in british columbia, canada, the current study, we describe the pathobiologic characteristics of a novel reassortant virus - a/chicken/bc/fav-002/2015 (h5n1) belonging to clade that was isolated from backyard chickens in british columbia, canada. sequence analyses demonstrate pb1, pa, na and ns gene segments were of north american lineage while pb2, ha, np and m were derived from a eurasian lineage h5n8 virus. this novel virus had a 19 amino acid deletion in the neuraminidase stalk. we evaluated the pathogenic po ...201626988892
differential gene expression in pre-laying and laying period ovaries of sichuan white geese (anser cygnoides).geese are an economically important poultry species worldwide. their superior meat production performance and meat qual-ity make them a popular food. however, they are not bred worldwide because their poor laying capacity increases farming costs. to gain a global view of the genes that are differentially expressed between pre-laying (p) and laying (l) periods and to develop a database for further studies, we performed large-scale transcriptome sequencing of ovarian tissue collected from anser cy ...201526125885
the comprehensive mechanisms underlying nonhierarchical follicular development in geese (anser cygnoides).the laying performance of poultry primarily depends on the growth and development of the ovarian follicles. yet, little is known about the underlying mechanisms responsible for nonhierarchical follicular development in avian species. the aim of the present study is identify genes that are differentially expressed during nonhierarchical follicular development in geese by performing a transcriptome screen. a sequencing depth of 13.9 and 14.9 million mapped tags was obtained in pools of small white ...201526123507
phylogenetic studies of four anser cygnoides (anserini: anserinae) in hunan province of china based on complete mitochondrial dna this study, we cloned and sequenced the complete mitochondrial dnas of chinese goose, anser cygnoides populations from three different areas of hunan province in china. the anser cygnoides breed wugangtong white goose (wgtw) sample and wugangtong grey goose sample (wgtg) were taken from the wugang county of shaoyang city, the anser cygnoides breed xupu goose (xp) sample was taken from the xupu county of huaihua city, and the anser cygnoides breed yanling white goose (ylw) sample was taken fro ...201626057006
immunobiological activity and antiviral regulation efforts of chinese goose (anser cygnoides) cd8α during ngvev and gpv infection.the cd8 molecule is a cell membrane glycoprotein expressed on cytotoxic t lymphocytes, which are involved in the clearance of viruses. however, the functional characterization of goose cd8α is still unclear. the immunobiological characterization of goose cd8α in goose spleen mononuclear cells (mncs) was examined by real-time quantitative pcr (qpcr). it was shown that cd8α mrna levels were significantly up-regulated by in vitro treatment of mncs with phytohemagglutinin (pha), concanavalin a (cona ...201525577792
complete mitochondrial genome of swan goose anser cygnoides (anseriformes: anatidae).the swan goose anser cygnoides is a large threatened goose species in the iucn red list, with a natural breeding range in east asia, migratory and wintering mainly in central and eastern china. in this study, we used pcr-based method to determine the complete mitochondrial genome (mtdna) of this anatidae species. the complete mtdna is a 16,740 bp circular molecule containing 37 typical genes. the gene order is identical with that of the standard avian gene order. all protein-coding genes start w ...201625648923
type i interferon receptors in goose: molecular cloning, structural identification, evolutionary analysis and age-related tissue expression profile.the cdnas encoding two distinct type i interferon receptors were firstly cloned from the spleen of white goose (the chinese goose, anser cygnoides). the cdna of goose ifnar1 consisted of 1616 bp and encoded 406 amino acids with a predicted molecular weight of 46.4 kda, while the cdna of goose ifnar2 consisted of 1525 bp and encoded 294 amino acids with a predicted molecular weight of 32.6 kda. the ifnar1 shared 85.4% identity in deduced amino acid sequence with duck ifnar1, while ifnar2 amino ac ...201525617523
molecular cloning and characterization of cd3ε in chinese domestic goose (anser cygnoides).cd3 is one of the most important cell surface markers of t lymphocytes which play an important role in signal transmission of antigen recognition. in this study, goose cd3ε gene was cloned by touchdown pcr with the template of goose thymus cdna. the complete open reading frame of goose cd3ε encoded 178 amino acid residues with a 21 signal peptide. sequence alignments showed that goose cd3ε had an amino acid sequence similarity to duck (80.3%) and chicken (66.3%). the extracellular domain of goos ...201525796602
molecular cloning, characterisation and tissues expression analysis of the goose (anser cygnoides) vasoactive intestinal peptide (vip) gene.1. vasoactive intestinal peptide (vip) is involved in the control of prolactin (prl) release and plays a pivotal role as a regulator of reproductive behaviour and neuroendocrine secretion in birds. 2. in this study, a 941-bp cdna fragment covering the complete coding region (cds) of goose vip gene was identified. the cdna contains a 32-bp 5'-untranslated region (utr), a 603-bp cds and a 306-bp 3'-utr containing two attta sequence elements, two polyadenylation signals (aataaa) and a 25-bp poly (a ...201425347433
transcription factors gata-4 and gata-6: molecular characterization, expression patterns and possible functions during goose (anser cygnoides) follicle development.the transcription factors gata-4 and gata-6, members of the gata family, play an important role in ovarian cell proliferation, differentiation and apoptosis. in this study, the full-length coding sequences of goose gata-4 and gata-6 were cloned and characterized. gata-4 and gata-6 consist of 1236 and 1104 nucleotides encoding proteins with 411 and 367 amino acids, respectively. the deduced amino acid sequences of both proteins include two adjacent zinc finger domains with the distinctive form (c ...201424531706
diagnostic imaging of peripheral vestibular disease in a chinese goose (anser cygnoides).a 20-year-old chinese goose (anser cygnoides) presented for severe left-sided head tilt and circling to the left. peripheral vestibular disease associated with otitis media extending into the left quadrate bone was diagnosed by magnetic resonance imaging and computed tomography. otoscopy confirmed a ruptured tympanic membrane, and a brainstem auditory evoked response test confirmed loss of hearing in the affected ear. surgery to remove the caseous material and long-term medical therapy improved ...201424881151
the dopamine β-hydroxylase gene in chinese goose (anas cygnoides): cloning, characterization, and expression during the reproductive cycle.dopamine β-hydroxylase (dbh) is a critical enzyme in the biosynthesis of catecholamines. this enzyme's role in neuroendocrine regulation is well known, but there are some indications that it may also modulate reproduction and endocrine in mammals and birds. we selected goose (anas cygnoides) as an ideal model species for investigating the role of dbh in avian reproduction.201626912132
functional analysis and induction of four novel goose (anser cygnoides) avian β-defensins in response to salmonella enteritidis the current study, four novel avian β-defensins (avbds) (avbd2, 5, 9, and 10) were identified in tissues from the chinese goose (anser cygnoides). the antibacterial activity of the avbds showed that all of these avbds exhibited antibacterial activity against most of the bacteria investigated (p<0.01). in addition, antibacterial activity of all of the avbds against staphylococcus aureus and pasteurella multocida decreased significantly or was completely abolished at 150mm nacl (p<0.01). none o ...201222285691
molecular cloning, expression and polymorphism of goose lrp8 gene.1. the low-density lipoprotein receptor-related protein 8 (lrp8), a member of the low-density lipoprotein receptor (ldlr) gene family, participates in the supplying of lipid during follicular development. the objective of the study was to identify and characterise the lrp8 gene in goose. 2. a 2867 bp fragment that covered the complete coding region (cds) of goose (anser cygnoides) lrp8 gene was cloned. it encoded a protein of 917 amino acid residues containing a 24-amino acid signal peptide and ...201424673343
Gene expression profile of estrogen receptor alpha and beta in the ovaries of Zi geese (Anser cygnoides).The profile of ERalpha and ERbeta gene expression in the ovaries of Zi geese at 1 day and 1,2, 3, 4, 5 and 8 months of age (n=8, respectively) was examined by quantitative real-time PCR (qRT-PCR). The results showed that the expression of ERalpha and ERbeta mRNA was greater at 1 to 5 and 8 months compared with that observed at 1 day. In particular, the level of expression of ERalpha and ERbeta at 8 months was greater, 2.47 +/- 0.23 fold and 29.07 +/- 1.25 fold, respectively, compared with that a ...201122195466
extraoral surgical correction of lingual entrapment in a chinese goose (anser cygnoides).an adult female chinese goose (anser cygnoides) presented with a ventral displacement of the hyoid apparatus, associated with distension of the intermandibular sublingual space and of the gular skin, causing difficulties with prehension and deglutition of food and water. physical examination revealed that the tongue was able to move normally and could be replaced into a normal anatomical position by external compression of the distended ventral intermandibular region. a mild hypoalbuminemia was ...201324640932
identification and differential expression of micrornas in ovaries of laying and broody geese (anser cygnoides) by solexa sequencing.recent functional studies have demonstrated that the micrornas (mirnas) play critical roles in ovarian gonadal development, steroidogenesis, apoptosis, and ovulation in mammals. however, little is known about the involvement of mirnas in the ovarian function of fowl. the goose (anas cygnoides) is a commercially important food that is cultivated widely in china but the goose industry has been hampered by high broodiness and poor egg laying performance, which are influenced by ovarian function.201424505332
Two maternal origins of Chinese domestic goose.China is particularly rich in goose genetic resources. Systematic study of the genetic diversity and origin of Chinese domestic geese will provide an important scientific basis for the conservation and utilization of these resources and for human history. The 521-bp control region (D-loop) of mitochondrial DNA from 26 goose breeds and 6 Landaise geese were sequenced. The results showed that the average haplotype diversity and nucleotide diversity of Chinese domestic geese were 0.1384 and 0.00029 ...201122080007
molecular characterization, tissue distribution, and expression of two ovarian dicer isoforms during follicle development in goose (anser cygnoides).dicer plays a key role in the biogenesis of micrornas and small interfering rnas, which control the coordinated expression of multiple of genes during follicle development. in this study, the cdnas encoding two dicer isoforms (gdicer-a and gdicer-b, respectively) were isolated and cloned from goose ovary using rt-pcr. this is the first time a new dicer splice variant has been characterized at the molecular level in vertebrates. sequence analysis indicated that both of the two isoforms consist of ...201424462910
molecular cloning, polymorphism and tissue distribution of the mhc class iib gene in the chinese goose (anser cygnoides).1. the goose major histocompatibility complex (mhc) class iib cdna (ancy-mhcii) was cloned by homology cloning and rapid amplification of cdna ends by polymerase chain reaction (race-pcr), and the genomic structure and tissue expression were investigated. 2. three different 5'-race sequences (ancy-mhc ii5'-1, ancy-mhc ii5'-2, ancy-mhc ii5'-3), one 3'-race sequence (ancy-mhc ii-3') and two different full length ancy-mhc iib cdna sequences (ancy-cd01, ancy-cd02), which came from different alleles ...201121732877
chinese goose (anser cygnoides) cd8a: cloning, tissue distribution and immunobiological in splenic mononuclear cells.cd8 molecule is a cell membrane glycoprotein, which plays an important role in cell-mediated immunity. here, we identified chinese goose cd8α (gocd8α) gene for the first time. the full-length cdna of gocd8α is 1459bp in length and contains a 711bp open reading frame. phylogenetic analysis shows that the waterfowl cd8α formed a monophyletic group. semi-quantitative rt-pcr analysis showed that transcripts of gocd8α mrna were high in the immune-related organs and mucosal immune system in gosling, a ...201323933420
cloning and expression of stearoyl-coa desaturase 1 (scd-1) in the liver of the sichuan white goose and landes goose responding to overfeeding.the est sequence of goose (anser cygnoides) stearoyl-coa desaturase 1(scd-1) was obtained from a subtractive cdna library. to further investigate the role of scd-1 in lipid metabolism in geese, 5'-race and 3'-race were carried out in this study to obtain the complete cdna sequence of goose scd-1, which contained a 29-bp 5' utr, a 1074-bp open reading frame (orf) encoding 357 amino acids, and a 125-bp 3' utr. the expression of scd-1 was measured in several tissues, and the effects of overfeeding ...201021088902
molecular cloning, characterization and tissue expression of cd4 in chinese goose.cd4 protein is a single chain transmembrane glycoprotein belonging to the immunoglobulin superfamily that recognizes the major histocompatibility complex (mhc) class ii molecules. it plays an important role in cell-mediated immunity. here, the full-length cdna of cd4 in chinese goose (anser cygnoides) was cloned and identified. the goose cd4 is 1940bp in length and encodes a single open-reading frame of 480 amino acids. the putative amino acid sequence of goose cd4 consisted of a signal peptide, ...201323454486
transcriptome profiling of the goose (anser cygnoides) ovaries identify laying and broodiness phenotypes.the geese have strong broodiness and poor egg performance. these characteristics are the key issues that hinder the goose industry development. yet little is known about the mechanisms responsible for follicle development due to lack of genomic resources. hence, studies based on high-throughput sequencing technologies are needed to produce a comprehensive and integrated genomic resource and to better understand the biological mechanisms of goose follicle development.201323405160
chewing lice of swan geese (anser cygnoides): new host-parasite associations.chewing lice (phthiraptera) that parasitize the globally threatened swan goose anser cygnoides have been long recognized since the early 19th century, but those records were probably biased towards sampling of captive or domestic geese due to the small population size and limited distribution of its wild hosts. to better understand the lice species parasitizing swan geese that are endemic to east asia, we collected chewing lice from 14 wild geese caught at 3 lakes in northeastern mongolia. the l ...201627853128
the endogenous development and pathogenicity of eimeria anseris (kotlan, 1932) in domestic goslings.twenty-one, 25-day-old, artificially reared, coccidia-free goslings (anser cygnoides var. domestica) were inoculated orally with 0.5 × 10(4), 1 × 10(4), or 100 × 10(4) sporulated oocysts of eimeria anseris and sacrificed at intervals from 24 to 216 h post-inoculation (hpi). nine uninfected goslings served as negative controls. parts of the visceral organs from goslings, including the intestines, kidneys, and liver, were fixed, sectioned, and observed microscopically. the results revealed that tw ...201727770197
hepatic myelolipoma and amyloidosis with osseous metaplasia in a swan goose (anser cygnoides).an adult swan goose (anser cygnoides) kept in a zoological garden had gross hepatic enlargement with extensive ill-defined white foci. microscopically, the hepatic lesions were composed of a mixture of adipocytes and myeloid cells. the goose was also affected with systemic amyloidosis and there were areas of osseous metaplasia associated with deposition of amyloid within the liver.200919592008
age-related development and tissue distribution of t cell markers (cd4 and cd8a) in chinese goose.aquatic birds play n critical role in the transmission and dissemination of many important pathogens such as avian influenza virus. the cell-mediated immunity is very important in eliminating the intracellular antigens. expression of cd4 and cd8 on t cell surface is essential for cell-mediated immune defence and t-cell development. however, the ontogeny of t lymphocytes in waterfowl is scarce and fragmentary. to address these questions, here we report the development and tissues distribution of ...201525616911
experimental evidence shows the importance of behavioural plasticity and body size under competition in waterfowl.when differently sized species feed on the same resources, interference competition may occur, which may negatively affect their food intake rate. it is expected that competition between species also alters behaviour and feeding patch selection. to assess these changes in behaviour and patch selection, we applied an experimental approach using captive birds of three differently sized anatidae species: wigeon (anas penelope) (~600 g), swan goose (anser cygnoides) (~2700 g) and bean goose (anser f ...201627727315
research advances on animal genetics in china in 2015.chinese scientists have made significant achievements in the field of animal genetics in 2015. incomplete statistics show that among all the publications of 2015 involving nematode (caenorhabditis elegans), fly (drosophila melanogaster), zebrafish (danio rerio), african clawed frog (xenopus) or mice (mus musculus), about 1/5 publications are from china. many innovative studies were published in high-impact international academic journals by chinese scientists, including the identification of a p ...201627655312
characterising the interspecific variations and convergence of gut microbiota in anseriformes herbivores at wintering areas.microorganisms in vertebrate guts have been recognized as important symbionts influencing host life. however, it remains unclear about the gut microbiota in long-distance migratory anseriformes herbivores, which could be functionally important for these wetland-dependent animals. we collected faeces of the greater white-fronted goose (gwfg), bean goose (bg) and swan goose (sg) from shengjin lake (sjl) and poyang lake (pyl) in the yangtze river floodplain, china. high-throughput sequencing of 16s ...201627600170
[sequence and structure analysis of mitochondrial trnapro and trnathr genes in domestic goose breeds].we report here the results of the sequence and structure analysis of mitochondrial trnapro and trnathr genes in domestic goose breeds by sequencing the mitochondrial dna from a total of 25 samples from 6 breeds of chinese geese and 2 breeds of domestic europe geese. sequences and the cloverleaf structure of trnapro (69 bp) and trnathr (68 bp) in domestic goose breeds were described and analysed they were compared amongst the three domestic goose breeds as well as between anseriformes (anser cygn ...200616818428
distinctive gut microbial community structure in both the wild and farmed swan goose (anser cygnoides).swan goose (anser cygnoides) is currently one of the most popular economic wildfowl for rare birds breeding industries in several provinces of china. however, the farmed swan geese, reared in artificial environment and fed on both natural and artificial diets, display a reduced reproductive rate compared to wild species. little is known about the gut microbiota of this species, which could play a role in nutrient and energy metabolism, immune homeostasis and reproduction. the present comparative ...201627365218
counting absolute number of lymphocytes in quail whole blood by flow a previous study, we reported a new method for counting quail blood cells. after quail blood cells were stained with fluorescent lipophilic dye (dioc6(3)), absolute counts of erythrocytes, granulocytes, and monocytes were obtained by means of flow cytometry (fc). the fc method has the potential for application to avian blood cells count; however, the method was unable to distinguish between lymphocytes and thrombocytes. in the present study, we improved the fc method to obtain separate counts ...200515876797
molecular cloning of the smad4 gene and its mrna expression analysis in ovarian follicles of the yangzhou goose (anser cygnoides).mothers against decapentaplegic homolog 4 (smad4) is an important protein in animal reproduction. it plays pivotal roles in cellular pathways, including apoptosis. the expression profile of the smad4 gene in goose ovarian follicles has not been reported. in this study, the smad4 coding sequence was cloned from the yangzhou goose. a phylogenetic analysis was performed and mrna expression was examined in various tissues using quantitative real-time pcr. an alternative splice form of smad4, smad4-b ...201627108648
nocturnal light pulses lower carbon dioxide production rate without affecting feed intake in geese.this study was conducted to investigate the effect of nocturnal light pulses (nlps) on the feed intake and metabolic rate in geese. fourteen adult chinese geese were penned individually, and randomly assigned to either the c (control) or nlp group. the c group was exposed to a 12l:12d photoperiod (12 h light and 12 h darkness per day), whereas the nlp group was exposed to a 12l:12d photoperiod inserted by 15-min lighting at 2-h intervals in the scotophase. the weight of the feed was automaticall ...201626950871
de novo transcriptomic analysis of peripheral blood lymphocytes from the chinese goose: gene discovery and immune system pathway description.the chinese goose is one of the most economically important poultry birds and is a natural reservoir for many avian viruses. however, the nature and regulation of the innate and adaptive immune systems of this waterfowl species are not completely understood due to limited information on the goose genome. recently, transcriptome sequencing technology was applied in the genomic studies focused on novel gene discovery. thus, this study described the transcriptome of the goose peripheral blood lymph ...201525816068
characterization of hsp70 and its expression in tissue: correlation with physiological and immune indices in goose (anser cygnoides) serum.we cloned the goose heat shock protein 70 gene (hsp70), to determine its sequence variation and elucidate its mrna expression. we designed primers to amplify the entire goose hsp70 sequence. we used 10 commercial wuzong goslings in a heat-stress experiment. we collected tissue samples for rna extraction and quantitative real-time polymerase chain reaction (qrt-pcr). we analyzed the variation in expression of goose hsp70 before and after heat stress. we constructed a dna pool from six different s ...201526505377
sequences of sixteen phosphoserine peptides from ovalbumins of eight species.phosphoserine peptides have been isolated by a diagonal electrophoresis method from proteolytic digests of ovalbumins from hen, grouse, turkey, golden pheasant, magpie goose, chinese goose, aylesbury duck and fulvous whistling duck. the amino acid sequences of these peptides have been determined. there are two sites of phosphorylation in each ovalbumin, which are located in two different regions of the ovalbumin molecule. amino acid replacements are more frequent in the site 1 sequences than in ...19816783411
influence of lead acetate or lead shot ingestion upon white chinese geese. 19827126905
mitotic chromosomes of white chinese geese. 20105703379
anatomical development of white chinese geese. 196514337608
the cytogenetics of domestic geese.hybrids were produced between an african male and several pilgrim female domestic geese. partial karyotypes revealed a difference in the fourth largest pair of autosomal chromosomes. this chromosome pair was metacentric in the african, submetacentric in the pilgrim, and heteromorphic in the hybrids. a similar difference between the putative wild ancestors of the african and pilgrim breeds has been reported by others. these findings provide cytological evidence to support the traditional opinion ...19883367038
molecular cloning and mrna expression analysis of antizyme inhibitor 1 in the ovarian follicles of the sichuan white goose.antizyme inhibitor 1 (azin1) plays critical roles in various cellular pathways, including ornithine decarboxylase regulation, polyamine anabolism and uptake and cell proliferation. however, the molecular characteristics of the azin1 gene and its expression profile in goose tissues and ovarian follicles have not been reported. in this study, the azin1 cdna of the sichuan white goose (anser cygnoides) was cloned, and analyzed for its phylogenetic and physiochemical properties. the expression profi ...201525959024
transcriptome profiling of the hypothalamus during prelaying and laying periods in sichuan white geese (anser cygnoides).the sichuan white goose is a chinese breed well known for the quality of its meat. however, reproductive performance in this goose is not ideal, and little information is available regarding the abundance of transcripts. to better understand the molecular mechanism(s) underpinning prelaying and laying periods in the sichuan white goose, high-throughput rna sequencing was performed to analyze the transcriptome in the hypothalamus. after sequencing and annotation, 26,921 unigenes were obtained, wi ...201525601520
molecular cloning, characterization and tissue distribution of two ostrich β-defensins: avbd2 and avbd7.avian β-defensins (avbds) are a family of small antimicrobial peptides that play important roles in the innate immunity of birds. herein, we report on two new ostrich avbd genes, avbd2 and avbd7, which were isolated from the bone marrow of ostriches (struthio camelus). the coding regions of ostrich avbd2 and avbd7 comprised 195 bp and 201bp, which encoded 64 and 66 amino acids, respectively. homology analysis showed that ostrich avbd2 had the highest similarity (up to 86%) with the swan goose (a ...201425127671
molecular cloning and mrna expression analysis of ornithine decarboxylase antizyme 2 in ovarian follicles of the sichuan white goose (anser cygnoides).the ornithine decarboxylase antizyme 2 (oaz2) gene is a member of the antizyme gene family. antizymes play pivotal roles in various cellular pathways, including polyamine anabolism and apoptosis. the molecular structure and expression profile of the oaz2 in goose ovarian follicles have not been reported. in this study, the oaz2 cdna sequence of the sichuan white goose was cloned (anser cygnoides), and phylogenetic and structural analyses of the oaz2 were performed. the expression profiling of oa ...201424831833
comprehensive analysis of sichuan white geese (anser cygnoides) transcriptome.high-throughput rna sequencing was performed for comprehensively analyzing the transcriptome of geese. a total of 28,803,759 bp of raw sequence data was generated by 454 gs flx+. after removal of adaptor sequences, 28,730,361 bp remained and 117,279 reads were obtained, with an average length of 244 bases. simultaneously, complementary dna samples from two different reproductive stages of goose ovarian, hypothalamus and pituitary tissue were sequenced separately using illumina miseq platform. a ...201424725216
five novel variants of gpr103 and their expression in different tissues of goose (anser cygnoides).gpr103 plays an important role in various tissues, while little information is available about the alternative splicing (as) of its mrna. in the present study, we used genomic pcr to identify the partial genomic locus of goose (anser cygnoides) gpr103 and rapid amplification of cdna ends (race)-pcr to identify five gpr103 variants, including the full-length variant (agpr103-n) and four alternatively spliced variants (agpr103-va, -vb, -vc and -vd). sequence analysis showed that agpr103-va and -vd ...201424657519
identification of differentially expressed known and novel mirnas in broodiness of goose.micrornas (mirnas) are endogenous small noncoding rnas plays a critical role in posttranscriptional regulation of gene expression. broodiness is observed in most avian species and influences egg production. several genes are known to play an important role in regulating the progress of reproduction. the goose is one of the most important waterfowls. however, the involvement of mirnas in the broodiness behavior of anser cygnoides (swan goose) is unknown. high-throughput sequencing and bioinformat ...201424469721
molecular characterization and differential expression of multiple goose dopamine d2 receptors.dopamine d2 receptor (drd2) gene, a member of the dopamine receptors gene family, has been studied as a candidate gene for broodiness due to its special effects on avian prolactin secretion. here, the genomic dna and cdna sequences of goose (anser cygnoides) drd2 gene were cloned and characterized for the first time. the goose drd2 cdna is 1353bp in length and encodes a protein of 450 amino acids. the length of goose drd2 genomic dna is 8350bp, including seven exons and six introns. we identifie ...201424309374
gene expression profiles of lh, prolactin and their receptors in female zi geese (anser cygnoides) during development.the objective of this work was to elucidate the gene expression profiles of luteinizing hormone (lh), prolactin (prl) and their receptors during the developmental and egg laying stage. the expression of genes encoding pituitary lh and prl, as well as those for the ovarian lh receptor (lhr) and prl receptor (prlr), was determined by quantitative real-time pcr in zi geese on day 1 and at 1, 2, 3, 4, 5, 6, 7 and 8 months of age, respectively. the expression of lh and lhr fluctuated and increased as ...201323767294
influence of hbco structure of the bar-headed goose on photolysis thermodynamics as studied by the nanosecond laser-ultrasonic technique.the bar-headed goose, a specialized high-altitude species, has a capacity for high oxygen uptake from a hypoxic environment. it thus has a higher oxygen affinity than other bird species of lower-altitude environments. oxygen affinity is determined by molecular structures and genetic mutations of hemoglobin (hb), which can also influence the coordinating structures and dynamics of oxygen-hb. to explore the structural differences in hbs as between high and low altitude species, photolysis dynamic ...201323748768
first de novo whole genome sequencing and assembly of the pink-footed goose.annotated genomes can provide new perspectives on the biology of species. we present the first de novo whole genome sequencing for the pink-footed goose. in order to obtain a high-quality de novo assembly the strategy used was to combine one short insert paired-end library with two mate-pair libraries. the pink-footed goose genome was assembled de novo using three different assemblers and an assembly evaluation was subsequently performed in order to choose the best assembler. for our data, allpa ...201728860085
paired box 7 (pax7) gene: molecular characterization, polymorphism and its association with growth performance in goose (anser cygnoides).1. paired box (pax7) gene is a member of the paired box family and plays a critical role in animal growth and muscle development. however, the molecular characterisation of the goose pax7 gene is unknown. 2. the open reading frame of goose pax7 is composed of 1509 bp, which encodes a protein of 503 amino acids and shares high homology with pax7 of other birds. 3. ten single nucleotide polymorphisms were identified in the genomic dna sequence, 8 located in the intron region and two located in the ...201728893081
goose fmo3 gene cloning, tissue expression profiling, polymorphism detection and association analysis with trimethylamine level in the egg yolk.flavin-containing monooxygenase 3 (fmo3) plays a critical role in catalyzing the conversion of trimethylamine (tma) to trimethylamine-n-oxide (tmao) in vivo. despite the well-documented association between fmo3 mutations and a 'fishy' off-flavor eggs in chicken and quail, little information is available regarding the molecular characteristic of goose (anser cygnoides) fmo3 and its relationship with the yolk tma content. to fill these gaps, we cloned the full-length cdna sequence of goose fmo3, w ...201728844670
survey of genetic structure of geese using novel microsatellite markers.the aim of this study was to create a set of microsatellite markers with high polymorphism for the genetic monitoring and genetic structure analysis of local goose populations.201728823137
functional characterization of duck lsm14a in ifn-β induction.human lsm14a is a key component of processing body (p-body) assembly that mediates interferon-β (ifn-β) production by sensing viral rna or dna. to the best of our knowledge, we are the first to report duck lsm14a (dulsm14a) cloning from duck embryo fibroblasts (defs). full-length dulsm14a encoded 461 amino acids and was highly homologous with chicken and swan goose sequences. more interestingly, the dulsm14a mrna was extensively expressed in all the studied tissues. in defs, dulsm14a was localiz ...201728666650
dispersal and transmission of avian paramyxovirus serotype 4 among wild birds and domestic poultry.avian paramyxovirus serotype 4 (apmv-4) is found sporadically in wild birds worldwide, and it is an economically important poultry pathogen. despite the existence of several published strains, very little is known about the distribution, host species, and transmission of apmv-4 strains. to better understand the relationships among these factors, we conducted an apmv-4 surveillance of wild birds and domestic poultry in six provinces of china suspected of being intercontinental flyways and sites o ...201728603697
infectivity, transmission and pathogenicity of h5 highly pathogenic avian influenza clade (h5n8 and h5n2) united states index viruses in pekin ducks and chinese late 2014, a h5n8 highly pathogenic avian influenza (hpai) virus, clade, spread by migratory waterfowl into north america reassorting with low pathogenicity ai viruses to produce a h5n2 hpai virus. since domestic waterfowl are common backyard poultry frequently in contact with wild waterfowl, the infectivity, transmissibility, and pathogenicity of the united states h5 hpai index viruses (h5n8 and h5n2) was investigated in domestic ducks and geese. ducks infected with the viruses had a ...201728592320
time course effect of lipopolysaccharide on toll-like receptors expression and steroidogenesis in the chinese goose ovary.the ovary of chinese goose is easily infected by microorganisms because of the mating behaviour in water, which causes decreased laying performance. this study investigated the time course effect of lipopolysaccharide (lps) on the steroidogenesis and mrna expression of toll-like receptors (tlrs), a class of key pattern recognition receptor, in the breeding goose ovary. the laying geese were treated intravenously with lps for 0, 6, 12, 24 and 36 h, and all birds were slaughtered approximately 8 h ...201728174321
effect of feeding green onions (allium ascalonicum) to white chinese geese (threskiornis spinicollis).sudden increase in mortality was observed in 2 different flocks of mature breeder geese fed green onions. at necropsy, birds had pale epicardium with random petechiation, sanguinous fluid accumulation in the pericardial sac, and mild swelling of the liver and spleen. histologically, there was accumulation of hemosiderin in hepatocytes, kupffer cells of the liver, macrophages, and renal tubules. there was also moderate to severe hepatic necrosis, vacuolation of hepatocytes, splenitis, and renal t ...200415305744
polymorphism of blood plasma proteins in the anser and branta electrophoretical analysis of blood plasma proteins of eight anser and two branta species was performed. ten polymorphic proteins in blood plasma pattern were distinguished and described: four prealbumin proteins, albumin, three postalbumin proteins, transferrin, and a single posttransferrin protein. genus-specific and species-specific variants of pr-1, al, pa-3, pa-x, and tf proteins were found. the species of branta differed in pr-1, pa-3, pa-x, and tf loci. the anser species differed, appa ...19957677730
complete mitochondrial genome of cygnus olor (aves, anseriformes, anatidae).the complete mitochondrial genome of cygnus olor (aves, anseriformes, anatidae) was revealed in this study. total 16 739 base pairs (bp) of this mitogenome encoded genes for 13 protein coding genes (pcgs), two ribosomal rnas (rrnas), 22 transfer rnas (trnas) and a d-loop (control region). the 12s rrna and 16s rrna genes are located between trna-phe and trna-leu (uur) and segmentalized by the trna-val. d-loop is located between trna-glu and trna-phe. the overall base composition of c. olor is g + ...201626153738
molecular and pharmacological characterization of poultry (gallus gallus, anas platyrhynchos, anser cygnoides domesticus) and pig (sus scrofa domestica) melanocortin-5 receptors and their mutants.the melanocortin-5 receptor (mc5r) is a member of the g protein-coupled receptor superfamily that plays a critical role in lipid production, skeletal muscle fatty acid oxidation, and adipocyte lipolysis. although multiple functions and important value of mc5r in human beings have been fully demonstrated, however, the potential molecular cloning, pharmacological characteristics and key amino acids in poultry and pig were still not fully understood. herein, we successfully cloned mc5r genes from c ...201931356812
comparison of whole embryonic development in the duck (anas platyrhynchos) and goose (anser cygnoides) with the chicken (gallus gallus).embryos from aquatic birds are the primary models for the study of flipper development. while some staging of early embryogenesis in duck have been studied, characterization of the stages of the entire embryonic development period in water birds has not been described. this study aimed to establish a comparison of complete morphological development staging for ducks (anas platyrhynchos) and geese (anser cygnoides) with the embryonic staging system by hamburger and hamilton (hh) for the chicken ( ...201930941418
pacific biosciences assembly with hi-c mapping generates an improved, chromosome-level goose genome.the domestic goose is an economically important and scientifically valuable waterfowl; however, a lack of high-quality genomic data has hindered research concerning its genome, genetics, and breeding. as domestic geese breeds derive from both the swan goose (anser cygnoides) and the graylag goose (anser anser), we selected a female tianfu goose for genome sequencing. we generated a chromosome-level goose genome assembly by adopting a hybrid de novo assembly approach that combined pacific bioscie ...202033099628
long-term reciprocal gene flow in wild and domestic geese reveals complex domestication history.hybridization has frequently been observed between wild and domestic species and can substantially impact genetic diversity of both counterparts. geese show some of the highest levels of interspecific hybridization across all bird orders, and two of the goose species in the genus anser have been domesticated providing an excellent opportunity for a joint study of domestication and hybridization. until now, knowledge of the details of the goose domestication process has come from archaeological f ...202032680852
isolation of mycoplasma anserisalpingitidis from swan goose (anser cygnoides) in china.mycoplasma anserisalpingitidis causes significant economic losses in the domestic goose (anser anser) industry in europe. as 95% of the global goose production is in china where the primary species is the swan goose (anser cygnoides), it is crucial to know whether the agent is present in this region of the world.202032503521
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