| salmonellae in the african great cane rat (thryonomys swinderianus). | because of its large size, the african great cane rat (thryonomys swinderianus) is valued for food and has become a popular meat in western africa. a survey was conducted to determine the occurrence of salmonellae in cane rats. ten strains of salmonella sp. were isolated from eight of 25 (32%) cane rats. salmonella ajiobo was isolated from the spleen and intestines of three cane rats; s. agama was obtained from the spleen, liver and intestines of three animals; and s. poona was isolated from the ... | 1990 | 2304192 |
| vaccination of grasscutters with a multicomponent clostridial vaccine. | grasscutter serum antibodies against clostridium perfringens beta-toxin were titrated in an enzyme immunoassay. the procedure that is currently used for vaccinating domesticated grasscutters is discussed. | 1995 | 8578917 |
| is enterotoxaemia in grasscutters (thryonomys swinderianus) caused by c. perfringens toxovars? | in 1985, in a colony of domesticated grasscutters in cotonou/benin (west africa), an endemic disease that caused severe losses of up to 50 percent of the population was found. the animals regularly showed a necrotic small intestine and strongly reddened and granulated (like a raspberry) peyer's plaques of the whole small intestine protruding into the intestinal lumen; the latter has never been described in other necrotic enteriditis caused by c. perfringens. in further investigations (schrägle a ... | 1995 | 8592913 |
| comparative studies of 'bile salts'. application to a problem of rodent bile salts of the cutting-grass. thryonomys swinderianus. | | 1959 | 13851968 |
| some heavy metals accumulate more in the flesh of thryonomis swinderianus (lem), grasscutter, than in beef of bos species, cow. | | 1993 | 8495058 |
| gastro-intestinal helminths of the cane rat thryonomys swinderianus in cameroon. | | 1994 | 7900222 |
| [topography of lymph nodes in the grasscutter (thryonomys swinderianus, temminck 1827)]. | | 1995 | 7645748 |
| an electron microscopic study of the chorioallantoic placenta and the subplacenta of the cane rat (thryonomys swinderianus temminck). | the ultrastructure of the cane rate chorio-allantoic placenta has been studied. in its thinnest regions the interhaemal membrane is composed of a single layer of syncytiotrophoblast, a common basal lamina, and the fetal capillary endothelium. hence this is a haemomonochorial placenta. the cytotrophoblastic cells show many mitotic figures but they are never seen directly bounding the maternal blood spaces. the syncytiotrophoblast of the spongy zone is rich in dilated cisterns of granular endoplas ... | 1984 | 6522355 |
| prevalence of toxoplasma gondii among west african rodent, thryonomys swinderianus from the niger delta. | the prevalence of toxoplasma gondii among west african rodent, thryonomys swinderianus, was assessed by the sabin-feldman dye-test. all of the 104 animals examined in the study were seropositive for toxoplasma dye-test antibody. this indicates that there exists among these rodents a considerable reservoir of toxoplasma from which infection can be transmitted to man and other animal species in that area. | 1986 | 3722813 |
| [practical aspects in grass-cutter breeding (thryonomys swinderianus). iii. coprophagia behavior]. | | 1986 | 3589074 |
| influence of habitat and seasonal variation on wild mammal diversity and distribution with special reference to the trypanosoma brucei gambiense host-reservoir in bipindi (cameroon). | to evaluate the role of wildlife in the resurgence and perenisation of human african trypanosomiasis (hat), we investigated the influence of habitat and seasonal variations on the diversity and spatial distribution of wild mammals, with special reference to those recognised as potential host-reservoirs of trypanosoma brucei gambiense in bipindi (southwestern cameroon). to achieve this, we carried out transect surveys in four habitat types over two years. a total of 31 mammal species were recorde ... | 2009 | 19732737 |
| [practical aspects of grass-cutter breeding (thryonomys swinderianus). ii. heat detection]. | | 1986 | 3589073 |
| gonadal and extragonadal sperm reserves of the domesticated adult african greater cane rat (thryonomys swinderianus). | gonadal and extragonadal sperm reserves were determined in twenty sexually matured domesticated african greater cane rats. mean (+/-sd) sperm numbers in testes and epididymides were 150.40+/-12.93x10(9) and 259.33+/-13.68x10(9), respectively. the mean epididymal distribution of spermatozoa was found as follows: 67.53+/-12.43x10(9) in caput, 89.10+/-13.20x10(9) in corpus, and 102.70 +/-13.71x10(9) in cauda. this study provides baseline data essential for effective selection of male cane rats for ... | 2010 | 20668506 |
| [practical aspects in grass-cutter breeding (thryonomys swinderianus). i. mating procedures and length of gestation]. | | 1986 | 3589072 |
| patterns of parturition and mortality in weaned greater cane rats (thryonomys swinderianus, temminck). | the patterns of parturition and mortality were studied in a colony of weaned captive greater cane rats, thryonomys swinderianus, temminck, from january to december 2000 at the grasscutter domestication centre, pokoase research station, animal research institute, ghana. the most important finding from the study was that it is practical to wean greater cane rats at 4 weeks of age with proper post-weaning management. mortality ranged between 0 and 3.9% with an average of 1.4% for animals weaned at ... | 2003 | 14620587 |
| the ductuli efferentes testis of the greater cane rat ( thryonomys swinderianus). | the structure of the efferent ducts of animals is known to vary from one species to another, it even varies between segments of the ducts in the same species. in the grasscutter or greater cane rat ( thryonomys swinderianus), there are three segments of the efferent duct, based on their content of non-ciliated or principal cell types. type i non-ciliated cell is present exclusively in the long proximal part of the duct, and exhibits a well-developed subapical endocytic apparatus as well as numer ... | 2003 | 12684763 |
| detection of mycobacterium ulcerans dna in the environment, ivory coast. | ivory coast is a west african country with the highest reported cases of buruli ulcer, a disabling subcutaneous infection due to mycobacterium ulcerans. however, the prevalence of environmental m. ulcerans is poorly known in this country. | 2016 | 26982581 |
| determination of the ovulatory mechanism of the grasscutter (thryonomys swinderianus). | the ovulatory mechanism of the grasscutter was determined in two phases. phase one was the histological examination of ovaries of sexually mature grasscutters in various reproductive conditions (non-mated, mated, pregnant) for corpora lutea (an indicator of ovulation). the second phase was an evaluation of the reproductive performance (female's acceptance to mate, ability to conceive and deliver) of sexually mature grasscutters in oestrus (open vagina, sealed vagina) and anoestrus (closed vagina ... | 2002 | 11988376 |
| efficacy of sex determination in the greater cane rat, thryonomys swinderianus, temminck. | the efficacy of the two most common techniques used for determining the sex of the greater cane rat, thryonomys swinderianus, temminck, was tested using 10 young and 8 adult animals with two technicians at the animal research institute's grasscutter domestication centre, pokoase, ghana. the techniques compared were the use of the head shape and/or head size and the use of the ano-genital distance. the use of the ano-genital distance for sex determination was validated in a colony of greater cane ... | 2002 | 11887419 |
| spontaneous neoplasms in captive african cane rats (thryonomys swinderianus temminck, 1827). | despite the increasing importance of cane rat (thryonomys swinderianus) farming in africa, diseases of these animals in captivity are not well known. a survey of a colony in gabon averaging 235 cane rats over a period of 36 months allowed the observation of several suspected tumors and the confirmation of three cases of neoplasms. within a period of 8 months, a chondroma in an adult female, a hemangiosarcoma in a subadult male, and a chondrosarcoma in an elderly female were diagnosed. this incid ... | 2001 | 11572565 |
| postmortem findings in captive cane rats (thryonomys swinderianus) in gabon. | the causes of morbidity and mortality in a population of cane rats (thryonomys swinderianus) on an experimental farm in gabon were monitored for 21 months; 94 of 546 animals (17.2 per cent) died and were examined postmortem, and complementary laboratory examinations were carried out on 23 of the cases together with samples from 13 other animals kept elsewhere in similar conditions. twenty-six (28 per cent) of the deaths occurred in preweaned kits, 40 (42 per cent) in subadults and 28 (30 per cen ... | 2001 | 11394798 |
| spermatogenesis in the grasscutter, thryonomis swinderianus (rodentia). | spermatogenesis in the grasscutter, thryonomis swinderianus, is characterized by remarkable diversification of the endoplasmic reticulum. in spermatocytes, besides the usual form with flat cisternae and vesicles, this membrane system forms unusually wide cisternae and vacuoles containing moderately electron dense material near the golgi apparatus and the cell membrane. in spermatids a whorl of smooth cisternae enclosing aggregates of granular electron dense material appears as another specializa ... | 2000 | 11297381 |
| molecular evidence of an african phiomorpha-south american caviomorpha clade and support for hystricognathi based on the complete mitochondrial genome of the cane rat (thryonomys swinderianus). | the complete mitochondrial genome of an african cane rat, thryonomys swinderianus (rodentia, hystricognathi), was included in a phylogenetic analysis along with 4 rodents, 14 additional eutherians, and 3 noneutherian outgroups. monophyly of the suborder hystricognathi, represented by the cane rat and the south american guinea pig, cavia porcellus, was strongly supported by maximum-parsimony, neighbor-joining, and maximum-likelihood methods. the molecular-based estimate of the divergence time of ... | 2001 | 11161749 |
| reproduction and mortality in a colony of captive greater cane rats, thryonomys swinderianus, temminck. | the reproductive performance and mortalities in a colony of captive greater cane rats, thryonomys swinderianus, were monitored from 1992 to 1998 at the grasscutter domestication centre, achimota, ghana. the animals were kept in cages and exposed to constant lighting from a 100 w electric light bulb during the night. the diet consisted mainly of freshly cut panicum maximum (guinea grass) fed ad libitum, with occasional supplements of cassava and cane sugar. the results indicate that the mean litt ... | 2000 | 10717939 |
| the efficacy of the vaginal plug formation after mating for pregnancy diagnosis, and embyonic resorption in utero in the greater cane rat (thryonomys swinderianus, temminck). | the efficacy of the detection of vaginal plug formation after mating for pregnancy diagnosis, and the degree of embryonic resorption were studied in 67 wild greater cane rats (thryonomys swinderianus) at esiam in the ekumfi district, ghana, over a period of 3 months. vaginal plug formation was first observed on day 59 of gestation, and could be used for pregnancy diagnosis on or after that date. however, the vaginal orifice subsequently opened a couple of times prior to day 105 of gestation and ... | 2000 | 10717938 |
| smallholder farming of the greater cane rat, thryonomys swinderianus, temminck, in southern ghana: a baseline survey of management practices. | baseline management practices and productivity of captive greater cane rats were studied between february and july 1992 using questionnaires with 33 practising and former farmers in 16 villages in three regions in southern ghana. the colony sizes were relatively small, ranging between 1 and 96, with nearly a 100% farmer drop-out rate. the mean litter size of the greater cane rats in this study was 4.8+/-0.13, with the young being weaned at 8.8 weeks old. although nearly all the farmers interview ... | 1999 | 10504102 |
| the influence of fibre in the diet on growth rates and the digestibility of nutrients in the greater cane rat (thryonomys swinderianus). | the greater cane rat thryonomys swinderianus is a coprophagous rodent in which fermentation occurs in the large caecum. the extent to which a 45% increase in the fibre component of the diet influenced growth rates of cane rats and the digestibility of nutrients and energy was investigated in two feeding trials. higher fibre levels in the diet reduced the digestibility of dry matter, protein and fat, while animals digested fibre components (neutral-detergent fibre, acid detergent fibre, hemicellu ... | 1999 | 10425732 |
| light and electron microscopic study of perineal gland in the grasscutter (thryonomys swinderianus, temminck 1827). | the thin and ultrathin structure of the perineal gland of the grasscutter was studied using routine histological, histochemical and electron microscopic techniques. the perineal glands were identified in the zona cutanea of the anal canal of males more than 4 months old. these glands are organized on a lobular model made up of sebaceous cells and isolated by connective parietal cells. the paler in colour the sebaceous cells, the more lipid vacuoles they contain. pas-negative and sudan iii-positi ... | 1998 | 9505439 |
| evolution of grass-cutter (thryonomys swinderianus) inflammation markers: comparison with rabbit (oryctolagus cuniculus) and rat (rattus norvegicus). | an inflammatory reaction was induced in grass-cutters (thryonomys swinderianus) by injecting turpentine. the changes in the plasma haptoglobin, fibrinogen, alpha 2 macroglobulin and immunoglobulin g was followed for 23 days by immunonephelometry. the results were compared to rat and rabbit. they showed that (a) the inflammatory reaction is delayed in the grass-cutter compared to rats and rabbits; (b) the concentration of haptoglobin increases less than in rat and rabbit; (c) the fibrinogen conce ... | 1997 | 9505435 |
| tranquillization of cane rats (thryonomys swinderianus) with a depot neuroleptic (pipothiazine palmitate). | stress-induced self-trauma is a major cause of mortality among captive cane rats (thryonomys swinderianus). six subadult female cane rats were injected with a long-acting neuroleptic drug (pipothiazine palmitate 25 mg/kg), and an equal number were injected with isotonic saline. their behaviour and reactions to stimuli were recorded daily. after 5 weeks, treated animals continued to display significantly less stress-related behaviour than the control group. in addition, two abbreviated studies we ... | 1997 | 9185091 |
| sensory quality ratings, consumption pattern and preference for some selected meat types in nigeria. | sensory quality attributes, consumption pattern and preference for some selected nigerian meat types (beef, goat meat, mutton, grasscutter (thryonomys swinderianus raptorum), african giant rat (cricetomys gambianus--water house) were investigated. sensory quality scores were carried out using a panel of thirty carefully screened consumers, based on a 9-point hedonic scale: while consumer consumption pattern and preference were assessed through a field survey of 120 randomly selected respondents ... | 1996 | 8833178 |
| anatomical, histological and functional specificities of the digestive tract in the male grasscutter (thryonomys swinderianus, temminck 1827). | using standard methods, the study of topographic and descriptive anatomy, and histology, has led to the specification of some special features and their relationship to the function of the grasscutter digestive tract. these details include the development of dorsal excrescence on the tongue, lack of a true pylorus, and advanced disappearance of brünner glands in the last third of the duodenum submucosa. more interesting is the size of the caecum, which fills 60% of the abdominal cavity, and the ... | 1996 | 8644928 |
| on the use of the perineal stain as an index of sexual maturity and breeding condition in the male greater cane rat, thryonomys swinderianus, temminck. | the efficacy of the perineal stain as an index for sexual maturity and breeding condition in the male greater cane rat, thryonomys swinderianus, temminck, was investigated in 34 animals collected from hunters' kills in the ekumfi district of ghana, between april and june 1989. the results indicated that, although the presence of the perineal stain was conclusive proof of sexual maturity in an individual, it was not efficacious as an index for sexual maturity for biological work in these animals ... | 2003 | 14620588 |
| karyological analysis of african cane rat. thryonomys swinderianus (temm.). | | 1972 | 4649376 |
| choline acetyltransferase immunoreactive cortical interneurons do not occur in all rodents: a study of the phylogenetic occurrence of this neural characteristic. | the present study was designed to provide results aimed at testing whether the interneurons with choline acetyltransferase immunoreactivity (chat), probably representing gaba interneurons, found in the cerebral cortex of the rat represent a common feature of the order rodentia. initially we verified the presence of chat immunoreactive bipolar cell bodies, axons and terminal-like fibres in pigmented (long-evans) and non-pigmented (sprague-dawley) strains of rattus norvegicus, confirming that the ... | 2006 | 17049807 |
| distribution and morphology of putative catecholaminergic and serotonergic neurons in the brain of the greater canerat, thryonomys swinderianus. | the distribution, morphology and nuclear subdivisions of the putative catecholaminergic and serotonergic systems within the brain of the greater canerat (sometimes spelt cane rat) were identified following immunohistochemistry for tyrosine hydroxylase and serotonin. the aim of the present study was to investigate possible differences in the complement of nuclear subdivisions of these systems when comparing those of the greater canerat with reports of these systems in other rodents. the greater c ... | 2008 | 17884333 |
| chromosomal phylogeny and evolution of the african mole-rats (bathyergidae). | the subterranean african mole-rats (family bathyergidae) show considerable variation in their diploid numbers, but there is limited understanding of the events that shaped the extant karyotypes. here we investigate chromosomal evolution in specimens representative of six genera and an outgroup species, the cane rat thryonomys swinderianus, using flow-sorted painting probes isolated from the naked mole-rat, heterocephalus glaber (2n = 60). a chromosomal phylogeny based on the cladistic analysis o ... | 2008 | 18293105 |
| hematological and plasma biochemistry of the adult wild african grasscutter (thryonomys swinderianus). | hematological and plasma biochemical values of wild grasscutters were evaluated to determine their potential to transmit zoonotic pathogens. three 5-ml blood samples were collected from each of 1000 grasscutters caught in the wild for hematology, biochemical, and parasitological tests. hematological and biochemical values were compared with those from captive-reared grasscutters. there are significantly (p < 0.05) higher lymphocyte, eosinophil, and basophil values for wild grasscutters compared ... | 2008 | 19120259 |
| embryonic resorption, litter size and sex ratio in the grasscutter, thryonomys swinderianus. | this study was conducted using 210 whole uteri collected from hunters' kills from july 2006 to march 2007 at esiam and sokode in the ekumfi and ho districts respectively; and data on 148 dams from eight farms in the greater accra region of ghana from january to december 2007. the objective of the study was to investigate the effects of embryonic resorption, litter size and parity on sex ratio in the grasscutter. embryonic resorption rate, which occurred at all stages of pregnancy, ranged between ... | 2010 | 19804949 |
| the structure of the penis with the associated baculum in the male greater cane rat (thryonomys swinderianus). | in this study, the structures of penises of eight sexually mature male greater cane rats were examined at both macroscopic and histological levels. each animal was sacrificed after anaesthesia with ether and then dissected open with the penis exposed from its root. the penises were first grossly examined, measured, and then prepared for histological examination. from this study it was observed that the body size has no allometry with penile size, but the testicular weight correlated with os peni ... | 2011 | 21866532 |
| toxic (pb, cd, hg) and essential (fe, cu, zn, mn) metal content of liver tissue of some domestic and bush animals in ghana. | accumulation of toxic metals in liver, a rich natural source of essential elements, can present health risks to regular consumers of liver. a total of 35 fresh liver samples of cow, sheep, goat, pig, grass-cutter (thryonomys swinderianus), giant rat (cricetomys gambianus), red deer (cervus elaphus), chicken and antelope (antilocapra americana) were obtained from three different markets in accra and kumasi, ghana. samples were analyzed using atomic absorption spectrometry and an automatic mercury ... | 2008 | 24784805 |
| prevalence and renal pathology of pathogenic <i>leptospira</i> spp. in wildlife in abeokuta, ogun state, nigeria. | there is paucity of information on the prevalence of leptospirosis in wildlife in nigeria. this study investigated the prevalence and renal pathology of leptospirosis in wild animals in southwest nigeria. one hundred and five kidney samples were examined from 10 different wildlife species (antelope) greater cane rat (gcr), hare, african giant rat (agr), tree hyrax, civet cat, monitor lizard, python, bushbuck and partridge) using a combination of ellinghausen mccullough johnson harris (emjh) medi ... | 2017 | 28397515 |
| pyramidal cells in v1 of african rodents are bigger, more branched and more spiny than those in primates. | pyramidal cells are characterized by markedly different sized dendritic trees, branching patterns, and spine density across the cortical mantle. moreover, pyramidal cells have been shown to differ in structure among homologous cortical areas in different species; however, most of these studies have been conducted in primates. whilst pyramidal cells have been quantified in a few cortical areas in some other species there are, as yet, no uniform comparative data on pyramidal cell structure in a ho ... | 2014 | 24574977 |
| relationship between age and brainstem allometry in the african grasscutter (<i>thryonomys swinderianus</i> temminck, 1827). | allometric values of brainstem structures were evaluated in african grasscutters thryonomys swinderianus (n = 27). brain samples were extracted from 9 animals each of 3 days (neonates), 72 days (juveniles) and 450 days of age (adults). the midbrain, pons and medulla oblongata were separated from each brain sample and dimensions and weights obtained. the weights of the midbrain in the neonate, juvenile and adult african grasscutters were 0.33 g ± 0.01 g, 0.47 g ± 0.01 g and 0.93 g ± 0.02 g, respe ... | 2017 | 28697613 |
| a study of scientific publications on the greater cane rat (thryonomys swinderianus, temminck 1827). | the greater cane rat (gcr), reputed to be african's second largest rodent, is a precocial hystricomorph with an uncommon phenotype and life history. scientific and socio-economic interests in the gcr have led to heightened research efforts targeted towards a better understanding of its biology and exploration of its economic and translational usefulness. | 2020 | 32318658 |
| poisonous substances used to capture and kill the greater cane rat (thryonomys swinderianus). | the greater cane rat, as it is commonly known, is often called grasscutter (in ghana, nigeria and other regions of west africa). even though is highly patronized as a delicacy by a majority of ghanaians (akrantie-twi language) mostly in the rural areas, the persistent reports on people being poisoned as a result of eating food prepared with grasscutter which has been captured/killed by the use of poison are deterring people from consuming the grasscutter meat despite its high protein content. th ... | 2020 | 32233079 |
| genome-wide dna markers to support genetic management for domestication and commercial production in a large rodent, the ghanaian grasscutter (thryonomys swinderianus). | domestication and commercial production of the grasscutter, thryonomys swinderianus, a large rodent, represents an important opportunity to secure sustainable animal protein for local communities in west africa. to support production, dna markers are required for population diversity assessment, pedigree analysis and marker-assisted selection. this study reports the application of double-digest rad sequencing to simultaneously discover and genotype snp markers in 24 wild and recently domesticate ... | 2017 | 27436241 |
| description of the male, redescription of the female and 16s rdna sequence of ixodes aulacodi (ixodidae). | ixodes (afrixodes) aulacodiarthur, 1956 is a poorly known species that has been recorded predominantly in the wet countries of western and central africa, mainly associated to the greater cane rat thryonomys swinderianus (temmink). we herein redescribe the female, describe the male (ascribed to the species from specimens found in copula) and provide the 16s rdna sequence. we also provide complete illustrations of the adults based on specimens found on greater cane rats in ivory coast. ixodes aul ... | 2016 | 26803353 |
| the effect of male proximity on vaginal patency, estrous cycle length and feed intake of female grasscutters. | this study was conducted to investigate the influence of male proximity on vaginal patency, estrous cycle length and feed intake of nulliparous and pluriparous grasscutter (thryonomys swinderianus) does. twelve non-pregnant and non-lactating adult female (six nulliparous and six pluriparous) grasscutters and six proven male grasscutters were used for the study in a 2 × 2 factorial design. the factors were the type of contact between the sexes (no visual contact v. visual contact) and parity (nul ... | 2016 | 26676245 |
| fiber composition of the grasscutter (thryonomys swinderianus, temminck 1827) thigh muscle: an enzyme-histochemical study. | the aim of this study was to describe de fiber composition in the thigh muscles of grass cutter (thryonomys swinderianus, temminck 1827). ten 4 to 6-month-old (3 to 4 kg) male grasscutter were used in this study. eleven skeletal muscles of the thigh [m. biceps femoris (bf), m. rectus femoris (rf), m. vastus lateralis (vl), m. vastus medialis (vm), m. tensor fasciae latae (tfl), m. semitendinosus (st), m. semimembranosus (sm), m. semimembranosus accessorius (sma), m. sartorius (srt), m. pectineus ... | 2015 | 26167391 |
| long-term spatio-temporal changes in a west african bushmeat trade system. | landscapes in many developing countries consist of a heterogeneous matrix of mixed agriculture and forest. many of the generalist species in this matrix are increasingly traded in the bushmeat markets of west and central africa. however, to date there has been little quantification of how the spatial configuration of the landscape influences the urban bushmeat trade over time. as anthropogenic landscapes become the face of rural west africa, understanding the dynamics of these systems has import ... | 2015 | 26104770 |
| the coagulating gland in the male greater cane rat (thryonomys swinderianus): morphological and immunohistochemical features. | this study reveals the structure, ultrastructure and immunoexpression of oestrogen alpha and beta receptors (erα and erβ) in the coagulating glands of the greater cane rat. gland samples from 15 adult male cane rats were processed for histological and ultrastructural studies while immunohistochemistry was also carried out. coagulating gland in the cane rat is a paired, triangularly shaped, transparent gland weighing about 1 ± 0.48 g. histologically, each secretory acinus is composed of folded mu ... | 2015 | 25792392 |
| anatomical and immunohistochemical characteristics of the prostate gland in the greater cane rat (thryonomys swinderianus). | this study examined the morphology and immunohistochemical features of the prostate gland in 15 captive-reared male greater cane rat of known reproductive and medical history. samples of the glands were taken after gross examination and routinely prepared for both histological and ultrastructural analysis. immunohistochemistry was also carried out on paraffin-embedded sections of the glands using rabbit polyclonal antibodies against oestrogen receptors (erα and erβ) and mouse monoclonal antibody ... | 2015 | 24895059 |
| gross, histological and ultrastructural features of the bulbourethral gland in the greater cane rat (thryonomys swinderianus). | the present study examines the structure and ultrastructure of the bulbourethral glands in 10 sexually matured male greater cane rats raised in captivity. following anaesthesia, the rats were perfusion-fixed transcardially and the bulbourethral glands dissected out. upon morphologic and morphometric analysis, the cowper's glands were observed to have an average volume of 0.24±0.08 ml, a diameter of 6.3±0.6 mm and weighs 0.199±0.06 g. the paired, gourd-shaped tubuloalveolar glands were surrounded ... | 2015 | 24660943 |
| predicting the energy and protein requirements of the pregnant grasscutter (thryonomys swinderianus, temminck) using the changes in weight and composition of the foetus and associated tissues of pregnancy. | eighteen (18) gravid uteri collected from hunters' kills during february and march 2008 were used to investigate growth and accretion of energy and protein in the gravid uterus during pregnancy in the grasscutter. each gravid uterus was separated into foetal, placental, empty uterus and foetal fluids (amniotic and allantoic fluids combined) components. individual tissues were weighed and analyzed for dry matter (dm), ash, crude protein (cp) and crude fat. regression equations were fitted to the ... | 2013 | 23315191 |
| comparative analysis of fecal microbiota in grasscutter (thryonomys swinderianus) and other herbivorous livestock in ghana. | the grasscutter (also known as the greater cane rat; thryonomys swinderianus) is a large rodent native to west africa that is currently under domestication process for meat production. however, little is known about the physiology of this species. in the present study, aiming to provide information about gut microbiota of the grasscutter and better understand its physiology, we investigated the intestinal microbiota of grasscutters and compared it with that of other livestock (cattle, goat, rabb ... | 2020 | 32075341 |
| bacterial and protozoan pathogens/symbionts in ticks infecting wild grasscutters (thryonomys swinderianus) in ghana. | ticks and tick-borne pathogens constitute a great threat to livestock production and are a potential health hazard to humans. grasscutters (thryonomys swinderianus) are widely hunted for meat in ghana and many other west and central african countries. however, tick-borne zoonotic risks posed by wild grasscutters have not been assessed. the objective of this study was to investigate bacterial and protozoan pathogens in ticks infecting wild grasscutters. a total of 81 ticks were collected from thr ... | 2020 | 32035054 |
| the morphology and morphometry of the epididymis in the greater cane rat (thryonomys swinderianus temmincks). | the structure and morphometry of the epididymis in the greater cane rat were studied in this work. in assessing the morphology and characterising the morphometric values, a total of 15 adult male greater cane rats, bred and raised in captivity, were used. all the animals had brownish perineal staining, which was taken as index of sexual maturity in male cane rats, and they were maintained on elephant grass stems with water given ad libitum. from this work, the epididymis of the greater cane rat ... | 2010 | 21120812 |
| Metabolic fecal nitrogen and digestibility estimates in the grasscutter (Thryonomys swinderianus). | The metabolic fecal nitrogen and digestibility estimates in the grasscutter were determined using 12 captive-bred adult animals fed with four experimental diets differing primarily in crude protein content using nitrogen balance trial approach. Grasscutters required 343.5 mg N kg(-0.75) d(-1) of nitrogen to meet maintenance requirements, which were met on diets containing 7.4% crude protein. The true digestibility of nitrogen was moderate (52%) but within the range for eutherians. Dry matter int ... | 2011 | 21947862 |
| developmental horizons in the pre-natal development of the greater cane rat (thryonomys swinderianus). | the greater cane rat (gcr, thyronomys swinderianus) is a precocial rodent predominantly found within africa. economic and scientific interests have led to several research efforts towards the domestication and better understanding of the biology and development of this rodent. despite these efforts, information on the pre-natal development of this rodent is currently lacking. this study characterises distinct developmental milestones including skin pigmentation, emergence and distributions of ha ... | 2019 | 31314146 |
| comparative morphometric analysis of the gastrointestinal tract of the captive greater cane rat (thryonomys swinderianus) and african giant pouched rat (cricetomys gambianus). | the greater cane rats (thryonomys swinderianus) and african giant pouched rats (cricetomys gambianus) are among the largest rodents in africa, undergoing domestications for meat and research purposes. the aim of this study was to explore whether there are any quantitative anatomical gastrointestinal adaptations associated with their omnivorous or herbivorous diets. in the african giant rat, the mean gastrointestinal tract length and colon width of the males were significantly higher than their f ... | 2015 | 26738259 |
| relationship between body mass index (bmi) and testicular and hormonal parameters of sexually active male greater cane rats (thryonomys swinderianus). | the current upsurge in intensive farming practices of greater cane rat has not only lead to higher growth rate but is accompanied by increased fat deposition especially in the males. this study attempts to characterize one of the most commonly used fat estimation parameter, the body mass index (bmi) as well as evaluates its relationship with testicular and hormonal parameters in seventy-two sexually active male cane rats over a period of one year. six animals, kidded and raised in a farm, with k ... | 2020 | 32368277 |
| macro-anatomical and morphometric studies of the hindlimb of grasscutter (thryonomys swinderianus, temminck-1827). | the hindlimb of the grasscutter (thryonomys swinderianus, temminck-1827) was studied using 12 adult (≥6 months) rats of either sex with the mean weights of 1.42 ± 0.20 kg and 0.82 ± 0.13 kg for buck (n = 6) and doe (n = 6), respectively (p < .05). characteristics of the bones were studied by gross observation after their preparation. measurements of different segments of the hindlimb were also taken, giving a total average length of 31.80 cm. correlation coefficients between length of bone and w ... | 2017 | 29139158 |
| effects of strain, sex, and season on body weight development of cane rat (thryonomys swinderianus) in the humid tropics. | the effects of strain (g), sex (h), and season (s) on live weight development of cane rats (thryonomys swinderianus) reared in captive system were investigated during the dry (35.95 °c) and wet seasons (25.81 °c) from february to august of a tropical environment. the field experiment took place at the university of ibadan. seventy-nine cane rats spreading among three genotypes (bamidele, frin, and lawole) of different age and body weight groups were randomly distributed into cages using randomiz ... | 2018 | 28933037 |
| health risk assessment for human exposure to trace metals via bushmeat in ghana. | consumption and trade in bushmeat are entrenched in sub-saharan africa amid growing land degradation and environmental pollution that raise safety concerns, yet sustainability of bushmeat extraction and zoonoses considerations have been the focus of bushmeat research. here, we evaluated the health risk of trace metals in the skeletal muscle, bone, liver, and skin of the black duiker (cephalophus niger), brush-tailed porcupine (atherurus africanus), bushbuck (tragelaphus scriptus), cane rat (thry ... | 2020 | 31673953 |
| ultrastructural studies of acrosomal formation in the testis of male greater cane rat (thryonomys swinderianus). | in furthering the understanding of the process of spermatogenesis in the greater cane rat, this study describes the ultrastructural spermiogenic transformation and acrosomal formation in the testes of this hystricomorphic rodent that is currently undergoing domestication in parts of west africa. | 2020 | 31008052 |
| regional skin histomorphology in adult greater cane rats (thryonomys swinderianus): a pilot study. | the greater cane rat (thryonomys swinderianus) demonstrated numerous dermal architectural peculiarities hitherto unreported. this investigation assessed and evaluated certain histologic features of skin samples from the fore and hind limbs, the neck, head, proximal to the ear and oro-nasal regions for follicular evaluations and micro anatomic assessments in the adult species. twenty wild taken animals of equal gender distribution were used for histologic assessments of structural elements and hi ... | 2018 | 30564599 |
| aflatoxicosis in african greater cane rats (thryonomys swinderianus). | aflatoxicosis is a widespread problem in captive animals fed on stored food and has been reported in various animals both domestic and wild. this report documents the clinicopathologic, microbial diagnostic findings and therapeutic regime for a study on the presentation, management, and outcome of aflatoxicosis in greater cane rats. | 2018 | 30147272 |
| ultrastructure of the parotid salivary gland in the greater cane rats (thryonomys swinderianus). | the parotid glands of adult male african greater cane rat (thryonomys swinderianus) were examined by light microscopy (semi-thin sections) and transmission electron microscopy. histologically, it consisted of acinar cells with vacuoles which corresponded to large oval electron-dense granules, intercalated, striated ducts, and myoepithelial cells which contacted the cells and intercalated ducts (ids). the cytoplasmic organizations of acinar cells represented the features of serous secreting cells ... | 2020 | 30023263 |
| a protocol for culturing environmental strains of the buruli ulcer agent, mycobacterium ulcerans. | contaminations and fastidiousness of m. ulcerans may have both hamper isolation of strains from environmental sources. we aimed to optimize decontamination and culture of environmental samples to circumvent both limitations. three strains of m. ulcerans cultured onto middlebrook 7h10 at 30 °c for 20 days yielded a significantly higher number of colonies in micro-aerophilic atmosphere compared to ambient atmosphere, 5% co2 and anaerobic atmosphere. in a second step, we observed that m. ulcerans g ... | 2018 | 29712992 |
| time of feeding and predictability of dry matter and water intake of grasscutters fed on grass and supplements containing varying levels of dietary fiber. | the study evaluated the feeding behavior of growing male grasscutters (thryonomys swinderianus) fed freshly cut panicum maximum, supplemented with pelletized concentrates containing varying levels of dietary fiber. in a two-stage 4 × 4 latin square arrangement, the relationships between water and dry matter intakes as influenced by dietary characteristics were investigated by offering supplements either at 09:00 h (morning) during the first stage or at 17:00 h (evening) during the second. each t ... | 2018 | 29574553 |
| immunolocalization and distribution pattern of estrogen (erα and erβ) and progesterone (pr) receptors along the excurrent duct of male greater cane rat (thryonomys swinderianus). | the excurrent duct, which plays vital roles in the reproductive biology of all male mammals, shows some structural variations among different species. some hormones such as testosterone, estrogen and progesterone, through their different receptors, have been known to be involved in the normal functioning of the excurrent duct. here we evaluated the presence, localization and patterns of distribution of three hormone receptors, estrogen alpha (erα), estrogen beta (erβ) receptors and progesterone ... | 2017 | 29485640 |
| consumer perceptions and reported wild and domestic meat and fish consumption behavior during the ebola epidemic in guinea, west africa. | the handling, capturing, butchering, and transportation of wildmeat can increase the risk of zoonoses, including the ebola virus disease (evd). guinea, west africa, experienced a catastrophic outbreak of evd between 2013 and 2016. this study aimed to understand local people's sources of information concerning evd, their perceptions of potential wildlife carriers of evd and their meat and fish consumption behavior during this period. a semi-structured questionnaire was administered to 332 partici ... | 2020 | 32566394 |
| disseminated mycobacterium ulcerans infection in wild grasscutters (thryonomys swinderianus), côte d'ivoire. | buruli ulcer is an infectious disease provoking chronic, disabling skin ulcers in mammals and humans. buruli ulcer is caused by mycobacterium ulcerans, an environmental mycobacterium synthesizing a toxin called mycolactone responsible for the pathogenicity. the reservoirs and the modes of transmission of m. ulcerans remain elusive, limiting the prophylaxis capabilities in rural areas in endemic countries. in australia, several studies have demonstrated the probable role of possums as reservoirs. ... | 2019 | 31333157 |
| comparative topographic analyses on the foramen magnums of two hystricomorphs: the crested porcupine (hystrix cristata) and greater cane rat (thryonomys swinderianus). implications for typology, phylogeny and evolution in rodents. | this investigation aims to assess species comparison of foramen magnums in two hystricomorphs and endeavours an inter-species categorisation of individual shape outline. | 2020 | 31322723 |
| molecular detection of pathogenic leptospira in grasscutters (thryonomys swinderianus) from côte d'ivoire. | the geographical and climatic conditions, hot and humid in côte d'ivoire, are favorable to the prolonged survival of leptospira in the environment. in this country, cases of human leptospirosis are underestimated and the wild reservoirs unknown. in this study, 16s rdna pcr-sequencing and variable number of tandem repeats typing investigations were performed in kidneys collected from 60 grasscutters (thryonomys swinderianus) around the city of yamoussoukro, including 10 bred grasscutters and 50 b ... | 2020 | 32614679 |
| tracing mycobacterium ulcerans along an alimentary chain in côte d'ivoire: a one health perspective. | mycobacterium ulcerans is an environmental mycobacterium responsible for an opportunistic, noncontagious tropical infection named buruli ulcer that necrotizes the skin and the subcutaneous tissues. m. ulcerans is thought to penetrate through breached skin after contact with contaminated wetland environments, yet the exact biotopes where m. ulcerans occurs remain elusive, hence obscuring the epidemiological chain of transmission of this opportunistic pathogen. | 2020 | 32463813 |
| [ticks of cattle (bos taurus and bos indicus) and grasscutters (thryonomys swinderianus) in savannas district of côte-d'ivoire]. | during dry season of 2014, some ticks were collected on cattle (bos taurus and bos indicus) and grasscutters (thryonomys swinderianus) in sugar complex areas of savanna district of côte-d'ivoire. two localities were concerned; sucaf 1 in ferkessédougou and sucaf 2 in komborodougou. the main objective was to inventory tick species that parasite cattle and grasscutters in this region, then, to identify the shared species between these two groups of animals. to this end, ticks were collected from 7 ... | 2020 | 32881445 |