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two consecutive transfers of heterakis gallinarum: effects on caecal worms and on histomonads. 19734737473
prevalence and distribution of gastro-intestinal helminths and haemoparasites in young scavenging chickens in upper eastern region of ghana, west africa.we conducted a cross-sectional study to determine the prevalence and species of gastro-intestinal helminths and haemoparasites in 100 chickens kept under extensive management systems in ghana, west africa. all the examined chickens (100%) were infected with gastro-intestinal helminths; a total of 18 species were detected. the species and their prevalences were: acuaria hamulosa (25%), allodapa suctoria (20%), ascaridia galli (24%), capillaria spp. (60%), choanotaenia infundibulum (13%), gongylon ...200010821963
helminth parasites of indigenous chickens in oodi, kgatleng district, botswana.thirteen adult indigenous chickens from oodi, kgatleng district, botswana, were examined for helminth parasites. two species of nematodes, ascaridia galli and heterakis gallinarum, and species of the cestode genus raillietina, were recovered. a. galli and h. gallinarum were the most commonly seen parasites. the nematode a. galli occurred concurrently with raillietina spp.200011212938
ecto-, endo- and haemoparasites in free-range chickens in the goromonzi district in zimbabwe.a cross-sectional study determined the prevalence of ecto-, endo- and haemoparasites in free-range chickens from the goromonzi district, zimbabwe. fifty young and 50 adult birds were selected randomly. all chickens harboured ecto- and endoparasites, and 32% were infected with haemoparasites. eight different ectoparasites were identified; the more prevalent ones had the following prevalences (young, %; adult, %): argas persicus (6; 14), cnemidocoptes mutans (6; 32), echidnophaga gallinacea (72; 7 ...200212114010
on the interaction between heterakis gallinarum, ascaridia galli, "blackhead" and the chicken. 196214468131
helminth parasites in the intestinal tract of indigenous poultry in parts of kenya.a study was carried out on 456 indigenous poultry intestinal specimens from various towns in kenya to determine the occurrence and distribution of helminth parasites in the intestinal tract of the birds. of the specimens examined, 414 had parasites whereas the remaining 42 had none, which is an infection rate of 90.78%. the main species of helminths found in the intestines were raillietina sp. (47.53%), heterakis gallinarum (21.33%), ascaridia galli (10.03%), strongyloides avium (9.96%), choanot ...200415214699
means of acquisition of histomonas meleagridis by eggs of heterakis gallinarum. 19734799084
acquired resistance to experimental heterakis gallinarum infections in pheasants: relative immunity conferred by exposure to heterakids of different ages. 19744430821
cecal and hepatic granulomas in chickens associated with heterakis gallinarum infection.heterakis gallinarum infection was detected in the ceca of chickens with cecal and hepatic granulomas found at slaughter. the chickens were diagnostic submissions from four small backyard flocks in saskatchewan. detailed dissection of some cecal granulomas in one flock and pepsin digestion of cecal granulomas in the three other flocks demonstrated the presence of the parasite within granulomas in three of the flocks. a possible causal relationship between heterakis gallinarum and the cecal and h ...19883202777
histomoniasis in leghorn pullets on a florida farm.recurrent outbreaks of histomoniasis in flocks of 4-to-6-week-old white leghorn pullets is reported. in a typical outbreak, 5% of the pullets were stunted and listless with unkempt feathers. mortality ranged from 2 to 3%, and the cull rate was approximately 2%. ceca of affected chickens contained caseous cores. histological examination of the ceca revealed fibrinonecrotic ulcerative granulomatous typhlitis associated with numerous histomonad trophozoites in the cecal wall. the outbreaks of histo ...19911953586
quantitative studies on heterakis gallinarum infections in the common fowl, gallus gallus l.the fertility, mortality, and migration patterns of hetarakis gallinarum were studied in chickens with concomitant parahistomonas wenrichi infections. h. gallinarum females were found to produce approximately 936 ova per day, when 50 days of age, and a total of 34,000 to 86,000 ova in a lifetime. there was no evidence of differential mortality between the sexes, nor of a preference for either the left or the right caecal organ of chickens. both male and female worms are capable of migrating betw ...19751206213
larval development of cecal worm (heterakis gallinarum) in chickens. 196514344004
prevalence of gastrointestinal helminths in different poultry production systems.a cross-sectional prevalence study of gastrointestinal helminths in danish poultry production systems was conducted on 268 adult chickens selected at random from 16 farms in denmark from october 1994 to october 1995. the trachea and the gastrointestinal tract of each bird was examined for the presence of helminths. in the free-range/organic systems the following helminths were found: ascaridia galli (63.8%), heterakis gallinarum (72.5%), capillaria obsignata (53.6%), capillaria anatis (31.9%) an ...199910579399
a cross-sectional study of helminths in rural scavenging poultry in tanzania in relation to season and climate.a cross-sectional study on the prevalence of helminths in rural scavenging poultry on six hundred adult chickens selected randomly from six villages in the morogoro region, tanzania during the wet and the dry seasons, was conducted. the trachea and gastrointestinal tract of each bird were examined for the presence of parasites. all chickens were infected with one or several species of helminths, the average being 4.8 +/- 1.7 helminths per chicken during the wet season and 5.1 +/- 1.8 during the ...19979271471
genetic resistance to heterakis gallinarum in two chicken layer lines following a single dose infection.groups of white leghorn and new hampshire male and female chicks were reared under helminth-free conditions and divided into two groups at an age of 8 weeks. one group was artificially infected with 100 embryonated heterakis gallinarum eggs, while the other group was kept as uninfected control. after 8 weeks all animals were harvested and worm burden was established. maximum of 60 worms per bird randomly selected were measured for length. body weights were recorded at 8 and 16 weeks of age. tota ...200818502584
a survey into the prevalence of poultry helminths in northwest arkansas commercial broiler chickens.a 12-month survey was conducted to determine the prevalence of poultry helminths in northwest arkansas commercial broiler chickens. intestinal tracts from market-ready broilers were collected weekly from two commercial broiler companies; a total of 3542 intestinal tracts were collected for parasite enumeration from 67 company a and 52 company b farms. ascaridia galli was found on 37.3% of company a farms and 3.9% of company b farms, raillietina cesticillus was found on 67.2% of company a farms a ...19948002885
infections with heterakis gallinarum in chickens following recovery from histomoniasis. 19665912228
heterakis gallinarum in the guniea fowl, numida meleagris: survival and comparative potential for transmitting histomonas meleagridis. 19744856050
heterakis gallinarum: radioimmunoassay of antigenic molecules in parasite cuticular extracts. 19873609226
the wild turkey as a host for heterakis gallinarum and histomonas meleagridis.freshly embryonated eggs of heterakis gallinarum gathered from naturally infected domestic turkeys and chickens developed the first 4 weeks essentially as well in young wild turkeys as in domestic poults, but then became progressively retarded and failed in most birds to result in females with fertile eggs. there was no significant difference in the prevalence or progress of infections with histomonas meleagridis in the two kinds of turkeys, both of which differed from chickens only in that the ...19751171270
effect of dimetridazole on transmission of histomonas meleagridis by heterakis gallinarum.the administration of an antihistomonal drug, dimetridazole, at a dose of 0.08% in feed, controlled experimental infections with histomonas meleagridis in chickens. the treated birds developed no lesions and the duration of infection with h. meleagridis was reduced. this drug regimen, however, did not always prevent incorporation of h. meleagridis into eggs of heterakis gallinarium; heterakid eggs pooled from medicated chickens in which h. meleagridis had never been detected transmitted the prot ...1978574246
intestinal protozoa important to poultry.parasites of two groups are important in poultry, the coccidia and the mastiogophora (flagellates) (table 1). most of the coccidia in poultry are in the genus eimeria, but a few species of isospora, cryptosporidium, and sarcosporidia are represented. the eimeria are best known, with seven important species recognized in chickens and several others in turkeys. diagnosis of coccidiosis is by recognition of classic signs and lesions, by gross examination, and can be aided by microscopic examination ...19989706082
efficacy of fenbendazole against helminth parasites of poultry in uganda.fenbendazole 4% (panacur, hoechst) administered in feed was used to treat chickens infected with ascaridia galli, heterakis gallinarum and railletina spp. it was also used to treat syngamus trachea in broiler birds. there was a marked drop in helminth egg counts in the faeces on the second day of treatment and the faeces became negative by the seventh day after the last treatment. post-mortem examination 15 to 21 days later showed that the drug was 100% effective against ascaridia galli and hete ...19826750887
[biocenosis of ascaridia galli, heterakis gallinarum and salmonella gallinarum and its importance in the pathogenesis of chicken typhoid]. 19695392120
an evaluation of ethyl-6-ethoxybenzothiazole-2-carbamate (sch 18099) for anthelmintic activity in domestic animals.ethyl-6-ethoxybenzothiazole-2-carbamate (sch 18099) was evaluated for efficacy against natural helminth infections in ponies, pigs, lambs and chickens. sixteen critical trials were conducted in ponies at dosages of 15 to 150 mg/kg. at 15 mg/kg, efficacy against adult and larval oxyuris equi was 100% and 91% and against small strongyles it was 98%. efficacy levels were 95% against strongylus vulgaris and s. edentatus at the 20 mg/kg dosage. in two trials at 100 mg/kg efficacy against parascaris e ...1977864223
the impact of natural helminth infections and supplementary protein on growth performance of free-range chickens on smallholder farms in el sauce, nicaragua.three on-farm studies were conducted in nicaragua during three consecutive years (1999-2001) to assess the impact of natural helminth infections on growth performance of free-range chickens aged 3-4 months. on all participating farms, half of the chickens were treated regularly with anthelmintics (trifen avicola - a combined formulation of piperazine, phenothiazine and dichlorophen - or albendazole) to express the growth potential of non-infected birds, whereas the other half served as non-treat ...200515907572
prevalence and burden of gastrointestinal helminthes among local chickens, in northern jordan.we conducted a cross-sectional study from december 2004 to february 2005 and from june 2005 to august 2005. the study aimed to determine the prevalence of gastrointestinal and tracheal helminthes among local chickens in northern jordan. a total of 208 male and female local scavenging chickens were selected randomly. we examined the trachea and gastrointestinal tract of each bird for the presence of helminthes. we recovered three nematode and eight cestode species. no trematodes were found. one h ...200818329115
study of gastro-intestinal helminths of scavenging chickens in four rural districts of amhara region, ethiopia.a total of 267 rural scavenging chickens were examined from october 1998 to august 1999 in four woredas (districts) of the amhara region, ethiopia. of these chickens, 243 (91.01%) were found to harbour one to nine different helminth parasites and 24 (8.99%) were free of helminth parasites. a significant difference (p < 0.01) was found between the prevalence rates of helminth parasites in the different agro-ecological zones; the highest prevalence was observed in the lowland areas. this suggests ...200111732422
acquisition and liberation of histomonas wenrichi by heterakis gallinarum. 19685689357
case report--coumaphos, a new anthelmintic for control of capillaria obsignata, heterakis gallinarum, and ascaridia galli in chickens. 19695813244
cross-sectional survey on helminth infections of chickens in the samsun region, turkey.a cross-sectional survey was performed to determine the prevalence and intensity of helminth infections in 185 chickens from nine districts in the samsun region, northern turkey between july 1999 and june 2000. in total, 88% of 83 scavenging chickens and 4% of 52 layers from laying batteries were infected, but none of the 50 broilers harboured helminths in the alimentary tract or trachea. the difference in prevalence was statistically significant among broilers, layers from laying batteries and ...200818605376
[determination of parasite fauna of chicken in the van region].the aim of this study was to determine the parasite fauna of the chicken in van province in 2002 and 2003. the material of the present study included endoparasites and ectoparasites determined by rutine parasitological examinations. direct, flotation and sedimentation techniques for endoparasites were used. the total of endoparasites and ectoparasites were determined as 85% and 76% respectively. the ratios of endoparasites obtained from the chicken were coccidial oocystis 65%, echinostoma spp. 2 ...200919598095
intestinal and haematic parasitism in the birds of the almuñecar (granada, spain) ornithological garden.birds from the almuñecar ornithological garden (granada, spain) were surveyed from june 2006 to may 2007 to establish programmes to prevent, control, and treat intestinal and haematic parasites. a total of 984 faecal samples and 41 samples of blood were collected from psittacidae, cacatuidae, phasianidae, and anatidae. one or more intestinal parasites were identified in 51.6% of the samples. blood parasites were found in 26.8% of the birds examined. the most frequent pathogenic endoparasites wer ...200919682800
occurrence and hat-rapd analysis of gastrointestinal helminths in domestic chickens (gallus gallus domesticus) in phayao province, northern thailand.the present study determined the prevalence and distribution of gastrointestinal helminths in domestic chickens (gallus gallus domesticus) between november 2012 and august 2013. one hundred and twenty domestic chickens were purchased from villages in four districts of phayao province; mae chai, dok khamtai, chun and chiang kham. morphological differences were used to identify the helminth species, and hat-rapd technique was used to differentiate among closely related species. the results reveale ...201728053568
non-starch polysaccharides alter interactions between heterakis gallinarum and histomonas meleagridis.nutrition of the host animal may not only influence interactions between the host and its parasites, but also relations between different parasites species residing on the same host. we investigated effects of insoluble and soluble non-starch polysaccharides (nsp) on establishment and development of heterakis gallinarum in chicken being treated or left untreated against histomonas meleagridis. six groups of one-day-old birds were allocated to three diets, two on each diet. the birds were fed ad ...201021144662
distribution of gastrointestinal helminths in chicken farms in the gharb region--morocco.gastrointestinal tracts of 300 chickens from three villages of the gharb region, morocco, were examined for adult helminths during 2002-2005. helminth species found were: notocotylus gallinarum (prevalence 0.7%), hymenolepis carioca (3.7%), raillietina echinobothrida (5.7%), hymenolepis contaniana (7%), raillietina tretragona (9.3%), raillietina cesticillus (12%), capillaria obsignata (6%), subulura brumpti (15.3%), heterakis gallinarum (10%), cheilospirura hamulosa (2.7%), dispharynx nasuta (5. ...200616541258
dose-titration of fenbendazole in the treatment of poultry nematodiasis.broiler chickens were fed ad libitum diets containing fenbendazole at various concentrations and durations for the removal of adult ascaridia galli, heterakis gallinarum, and capillaria obsignata. all regimens were 100% effective against a. galli. fenbendazole at doses of 80 ppm for 3 days and 48 or 30 ppm for 5 days was 100% effective against h. gallinarum. c. obsignata was not removed completely by any regimen, but greater than or equal to 95% effectiveness was seen in birds given fenbendazole ...19863814008
prevalence and distribution of gastrointestinal helminths and their effects on weight gain in free-range chickens in central zambia.examination of helminths from gastrointestinal tracts of 125 free-range chickens in zambia revealed a 95.2% prevalence rate. the species and their prevalences were: allodapa suctoria (85.6%), tetrameres americana (80.8%), ascaridia galli (28.8%), gonglonema ingluvicola (50.4%), raillietina spp. (81.6%) and heterakis gallinarum (32.8%). no trematodes or syngamus trachea were found. mixed infections accounted for 88.2% as compared to 7.2% of single infections. effects of helminthoses on weight gai ...200717847826
prevalence of parasites of the local scavenging chickens in a selected semi-arid zone of eastern kenya.a study to identify and estimate the prevalence of parasites of local chickens in a semi arid area of kenya was conducted between march 2005 and august 2006. three hundred and sixty (360) local chickens purchased from yathui division of machakos were examined. of those, 93.3% had helminths. nematodes were recovered in 268 (74.4%) chickens whereas 245 (68.1%) had cestodes. tetrameres americana (37.7%), ascaridia galli (33.3%) and heterakis gallinarum (22.8%) were the most important nematode speci ...200818422252
comparative responses of white leghorn and new hampshire chickens to experimental infections with histomonas meleagridis and heterakis gallinarium.experimental infections with histomonas melegridis and heterakis gallinarum were produced in young white leghorn (w.l.) and new hampshire (n.h.) chickens and beltsville small white turkeys (b.s.w.t.). although the histomonads caused liver lesions and high mortality in b.s.w.t., infections in chickens were not fatal and were confined to the ceca. cecal involvement in the w.l. was slightly more severe, but also more transitory, than in the n.h. with regard to length, survival, and reproductive cap ...1976945571
gastrointestinal helminth parasites of local chickens from selected communities in nsukka region of south eastern nigeria.the prevalence of gastrointestinal helminths of local chickens in nsukka region of southeastern nigeria was studied using 125 free range local birds purchased from four communities in nsukka zone namely, obollo-afor, orba, nsukka urban and owerre eze-orba. the birds were sacrificed humanely and their oesophagus, crop, proventriculus, gizzard, small intestine and caecum examined for the presence of gastrointestinal helminths. worms when present were isolated and identified using standard parasito ...201627876952
prevalence of gastro-intestinal parasites of backyard chickens (gallus domesticus) in and around shimoga.the present study was conducted for 1 year from march 2010 to february 2011 to identify gastro-intestinal parasites of backyard chickens and to estimate its prevalence in and around shimoga, a malnad region of karnataka. a total of 250 gastro-intestinal tracts were collected from backyard chickens for the detection of gastrointestinal parasites. among the 250 birds screened, 183 (73.2 %) were found positive for gastrointestinal parasites by gross examination of gastrointestinal tract. out of 183 ...201627605824
cross sectional epidemiological investigation on the prevalence of gastrointestinal helminths in free range chickens in narsingdi district, bangladesh.rural poultry production in bangladesh is mainly based on the free range or backyard poultry production system. this backyard poultry plays a vital tool for poverty alleviation as well as for empowerment of poor women of this country. however, this production system has disadvantage of susceptibility to many diseases including higher burden of parasitic infection. therefore this cross sectional epidemiological investigation was done to determine the prevalence and distribution of gastrointestina ...201627605790
experimental infections with the protozoan parasite histomonas meleagridis: a review.in recent years, a number of studies about histomonas meleagridis, and more specifically about experiments in vivo involving h. meleagridis to investigate the pathogenicity and efficacy of drugs or vaccines, have been published. together with older publications, a considerable amount of information about experimental infections with h. meleagridis exist, which is helpful for planning future animal studies and can reduce the number of birds used in such studies toward better animal welfare. one h ...201323160894
pathobiology of heterakis gallinarum mono-infection and co-infection with histomonas meleagridis in layer chickens.little is known about the induction and modulation of gut-associated immune reactions after nematode infection in the chicken. the objective of the present study was to compare the pathogenesis, induction of immune reactions and electrophysiological changes of the gut after mono-infection with heterakis gallinarum and after dual infection with h. gallinarum and histomonas meleagridis in layer chickens. in two experiments 3-week-old chickens were inoculated with embryonated h. gallinarum eggs, wh ...201121711187
Comparative efficacy of flubendazole and a commercially available herbal wormer against natural infections of Ascaridia galli, Heterakis gallinarum and intestinal Capillaria spp. in chickens.The efficacy of a commercially available flubendazole-based product and a commercially available herbal product were compared against three species of helminth parasites of chickens: Ascaridia galli, Heterakis gallinarum and Capillaria spp. A total of 48 naturally infected chickens were used in the study with 16 birds in each of three treatment groups (untreated control; flubendazole; and a herbal product). One bird from each treatment group was necropsied on Day 0 prior to first treatment to co ...201122024017
prevalence and impact of gastrointestinal helminths on body weight gain in backyard chickens in subtropical and humid zone of jammu, india.necropsy of gastrointestinal tract of 125 free-range chickens from a subtropical and humid zone of northwestern india revealed four nematode spp. (ascaridia galli, heterakis gallinarum, capillaria spp. and cheilospirura hamulosa) and four cestode spp. (raillietina cesticillus, raillietina echinobothrida, raillietina tetragona and amoebotaenia cuneata) the overall prevalence of the helminth parasites was 72.0%. amongst various helminth species encountered in the region, a. galli emerged out as th ...201223543701
blackhead disease (histomoniasis) in poultry: a critical review.after its discovery in 1893 in rhode island, blackhead disease was reported across the continent and soon in many other countries. it decimated the turkey industry in new england and followed production like a faithful shadow. blackhead disease causes high mortality in turkeys, sometimes approaching 100% of a flock. in chickens, the mortality may be 10%-20% with high morbidity, although many outbreaks pass unnoticed. early workers identified histomonas meleagridis, a protozoan related to entamoe ...200516404985
genetic resistance to natural helminth infections in two chicken layer lines.groups of lohmann brown (lb) and lohmann selected leghorn (lsl) hens were reared under helminth-free conditions and kept afterwards together in a free range system. mortality rate, body weight development, laying performance and faecal egg counts (fec) were recorded during a 12 month laying period. at the end of the laying period, 246 lsl and 197 lb hens were necropsied and worms counted following the world association for the advancement of veterinary parasitology (w.a.a.v.p.) guidelines. in ad ...201021185121
prevalence of helminth parasites in free-range chickens from selected rural communities in kwazulu-natal province of south africa.a total of 79 chickens were randomly collected from 4 rural localities and processed to detect the presence of helminth parasites and their prevalences. sixteen helminth species comprising 12 nematode and 4 cestode species were recorded from the 4 localities. syngamus trachea and cyathostoma spp. were the only helminth species recovered from the respiratory tract and the rest of the helminth species were from the gastrointestinal tract. the most prevalent nematode species across the 4 localities ...201021247015
effects of dietary non-starch polysaccharides on establishment and fecundity of heterakis gallinarum in grower layers.it was hypothesized that the establishment and fecundity of histomonas meleagridis free heterakis gallinarum may be affected by dietary non-starch polysaccharides (nsps). one-day-old female layer chicks (n=670) were fed ad libitum for 11wk one of the following diets in a three-times repeated experiment: basal diet (con), basal diet plus pea bran rich in insoluble nsp (i-nsp), basal diet plus chicory root meal as a source of inulin rich soluble nsp (s-nsp). at the end of wk three, each feeding gr ...201021247704
molecular identification and phylogenetic analysis of heterakis gallinae from native chickens in egypt.the genomic dna was extracted from nematode parasites, heterakis gallinae from specific host, native chickens. the polymerase chain reaction (pcr) was applied to make amplification of the dna content that aids in the further studies. the primer was used in the pcr reactions that have the following sequences: forward (5'-gtttccgtaggtgaacctgc-3') and reverse (5'-atatgcttaagttcagcgggt-3'). it gave total amplified fragment markers at 914 bp. the gene sequences obtained from egyptian h. gallinae was ...201323963640
prevalence of parasites and associated risk factors in domestic pigeons (columba livia domestica) and free-range backyard chickens of sistan region, east of iran.this study was carried out on free-range backyard chickens and domestic pigeons (columba livia domestica) from december 2010 to november 2011 to determine the prevalence, intensity and species of internal and external parasites in sistan region, east of iran. of the total of 59 (27 males and 32 females) free-range backyard chickens and 46 (26 males and 20 females) domestic pigeons inspected, 55 (93.22 %) and 39 (84.78 %) were infected respectively. ten species of free-range backyard chickens par ...201224082532
a note on concurrent natural parasitism by dispharynx spiralis and heterakis gallinarum in backyard poultry (gallus domesticus).the nematodes dispharynx spiralis (superfamily-spiruroidea, family-acuariidae) parasitising the proventriculus and heterakis gallinarum (superfamily-subuluroidea, family-heterakidae) found in the caecum of two backyard poultry birds are described. the usual location of d. spiralis is glandular stomach or proventriculus, where their heads may be deeply buried in the proventricular wall. h. gallinarum occurs in the caecum and commonly called as caecal worm of poultry.201627876950
absence of population genetic structure in heterakis gallinarum of chicken from sichuan, inferred from mitochondrial cytochrome c oxidase subunit i gene.population genetics information provides a foundation for understanding the transmission and epidemiology of parasite and, therefore, may be used to assist in the control of parasitosis. however, limited available sequence information in heterakis gallinarum has greatly impeded the study in this area. in this study, we first investigated the genetic variability and genetic structure of h. gallinarum. the 1325 bp fragments of the mitochondrial cox1 gene were amplified in 56 isolates of h. gallina ...201626394200
histomonosis - an existing problem in chicken flocks in poland.histomonosis (histomoniasis, blackhead), beside coccidiosis, belongs to the most important parasitic protozoan diseases in poultry. so far histomonas meleagridis infections with varied mortality rates have been mainly diagnosed in young turkeys. recently an increasing number of cases have been reported in chicken flocks in europe resulting in economic losses. it is thought that this situation is predominantly caused by a complete withdrawal of the effective antihistomonals in the eu. authors lis ...201525976057
in vivo anthelmintic efficacy of aloe ferox, agave sisalana, and gunnera perpensa in village chickens naturally infected with heterakis gallinarum.the study was conducted to determine the anthelmintic efficacy of aloe ferox, agave sisalana, and gunnera perpensa against heterakis gallinarum in village chickens. the chickens naturally infected with h. gallinarum were randomly divided into 14 groups of eight chickens and orally administered distilled water (negative control), mebendazole (positive control), and graded levels (50-, 100-, 200-, and 400-mg/kg doses) of the three plant extracts. at days 0, 7, and 14, the floatation technique was ...201525311442
egg production dynamics and fecundity of heterakis gallinarum residing in different caecal environments of chickens induced by fibre-rich diets.in modern husbandry systems, feed rations for laying hens may contain high levels of dietary fibre, which may only be fermented intestinally. depending on fermentation properties, the type of dietary fibre may influence the intra-caecal environment constituting the predilection site of heterakis gallinarum. we investigated egg production dynamics and fecundity of h. gallinarum residing in different caecal environments induced through different types of dietary fibre. growing layers were fed a st ...201425200385
broad spectrum anthelmintic potential of cassia plants.to study the in vitro anthelmintic efficacy of cassia alata (c. alata), cassia angustifolia (c. angustifolia) and cassia occidentalis (c. occidentalis).201425183125
density related effects on lifetime fecundity of heterakis gallinarum in chickens.density related effects, both inverse density- and density-dependent, contribute to regulating population dynamics of parasites. we investigated whether density related effects are directly controlling lifetime fecundity of heterakis gallinarum.201425034471
seasonal prevalence of gastrointestinal parasites in desi fowl (gallus gallus domesticus) in and around gannavaram, andhra pradesh.a study was carried out to know the prevalence of gastrointestinal parasites in desi fowl in and nearby villages of gannavaram, andhra pradesh for a period of 1 year. screening of 492 samples comprising faecal samples and gastrointestinal tracts from freshly slaughtered desi birds at local poultry shops and samples from post mortem examinations at ntr college of veterinary science, gannavaram revealed 63.21 % of gastrointestinal parasites. faecal samples were examined by floatation technique usi ...201627605762
a description of village chicken production systems and prevalence of gastrointestinal parasites: case studies in limpopo and kwazulu-natal provinces of south africa.the majority of rural households in developing countries own village chickens that are reared under traditional scavenging systems with few inputs and exposure to various parasitic infestations. understanding of the village chicken farming system and its influence on helminth infestation is a prerequisite for optimal prevention and control strategies. this study investigated the village chicken production system and associated gastrointestinal parasites in 87 households from limpopo (n = 39) and ...201627247063
gastrointestinal parasites of free-range chickens.the aim of the study was to determine the prevalence and intensity of parasitic gastrointestinal infections in free-range chickens from the west pomerania province. experimental material for the study was taken from 10 farms. breeds raised in farms participating in the study included miniature chickens called polish lilliputians and green- legged partridge. a total of 104 samples of faeces were examined. the willis-schlaff flotation method was used to assess the prevalence of infection, and mcma ...201425706430
diurnal fluctuations in nematode egg excretion in naturally and in experimentally infected chickens.we investigated whether nematode egg excretion through feces of naturally or experimentally infected chickens follow certain patterns within a day, which may allow determining the most appropriate sampling time for the highest parasite egg concentration. feces samples (n=864) from chickens (n=36) with naturally occurring mixed nematode infections (trials n1, n2) or with an experimental ascaridia galli infection (e) were collected quantitatively every 4h for four consecutive days. number of eggs ...201525700938
genetic variation for worm burdens in laying hens naturally infected with gastro-intestinal nematodes.1. genetic parameters were determined for the worm burden of the most common gastro-intestinal nematodes in two chicken genotypes after being exposed to free-range farming conditions for a laying period. 2. seventeen-week-old hens of 2 brown genotypes, lohmann brown (lb) plus (n = 230) and lb classic (n = 230), were reared for a laying period and subjected to post-mortem parasitological examinations at 79 weeks (lb plus) or 88 weeks (lb classic) of age. 3. there was no significant difference in ...201525486507
establishment of gastro-intestinal helminth infections in free-range chickens: a longitudinal on farm study.the objective of this study was to monitor establishment and development of gastro-intestinal helminth infections in chickens over two production years (py) on a free-range farm in lower saxony, germany. the data were collected between july 2010 and june 2011 (py1) and july 2011 and january 2013 (py2), respectively. during py1, lohmann brown classic (lb classic, n = 450) was tested, while in py2 two different genotypes (230 lb classic, 230 lb plus) were used. the hens were kept in two mobile sta ...201425080825
gastrointestinal helminths are highly prevalent in scavenging chickens of selected districts of eastern shewa zone, ethiopia.a cross-sectional survey on gastrointestinal helminths was conducted on 124 chickens raised under traditional management system in two selected districts namely ada'a and adamitulu of eastern shewa zone, ethiopia. of these chickens, 111 (89.5%) were found to harbor one of the five different helminth parasites and 13 (10.48%) were free of helminths parasites. the study also found that 103 (83.0%) and 72 (58.0%) of the examined chickens were invariably infected by diverse species of cestodes and n ...201224175425
a comprehensive evaluation of an elisa for the diagnosis of the two most common ascarids in chickens using plasma or egg yolks.classical faecal egg counts (fec) provide less reliable diagnostic information for nematode infections in chickens. we developed an elisa based on ascaridia galli antigens and tested two hypotheses, as follows: (i) igy antibodies developed against a. galli will also be useful to identify heterakis gallinarum infections, and (ii) circulating antibodies stored in egg yolks are as good as plasma samples, so a non-invasive diagnosis is possible. the aim of this study, therefore, was to compare the d ...201728420423
diseases of indigenous chickens in bokaa village, kgatleng district, botswana.this study examined flock size and management, level of internal and external parasite burden and seroprevalence of antibodies to poultry pathogens in indigenous chickens in bokaa village, kgatleng district, botswana. the mean flock size was 22.6 +/- 6.85 with a range of 11-34. the mean body weights of cocks and hens were 2.28 +/- 0.56 kg and 1.70 +/- 0.38 kg, respectively. housing and commercial poultry feed were not provided. ascaridia galli, heterakis gallinarum and syngamus trachea were foun ...200617137053
performance in chickens and turkeys of chicken-adapted heterakis gallinarum. 19705444572
precision, repeatability and representative ability of faecal egg counts in heterakis gallinarum infected chickens.this study investigated whether a precise and repeatable quantification of heterakis gallinarum egg excretion, which considerably reflects the actual worm burdens, can be achieved based on collection of the daily total amount of faeces from chickens. three-week-old birds (n=64) were infected with 200 embryonated eggs of h. gallinarum, and placed into individual cages 3wk after infection for 5wk to collect daily faeces (n=2240). the total daily faeces was mixed and a randomly taken sample per bir ...201121802853
the role of preparation technique, culture media and incubation time for embryonation of heterakis gallinarum eggs.the importance of preparation technique, culture media and incubation time in the embryonation of the infective egg stages of the intestinal nematode parasite heterakis gallinarum was studied. mature h. gallinarum worms were isolated from the caeca of infected chickens and separated by sex. in a first experiment intact female worms were kept for the development of their eggs in four different media (0.5% formalin, 2% formalin, 0.1 n sulphuric acid, 0.1% potassium dichromate) and incubated under ...200818265756
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