| does parahistomonas wenrichi affect the fertility of heterakis gallinarum? | | 1979 | 448618 |
| avermectins, new family of potent anthelmintic agents: efficacy of the b1a component. | when given to sheep as a single oral dose at 0.1 mg/kg, the b(1a) component of the avermectins caused a reduction of >95% in the numbers of haemonchus contortus, ostertagia circumcincta (including inhibited l(4) larvae), trichostrongylus axei, trichostrongylus colubriformis, cooperia oncophora, and oesophagostomum columbianum. when given to cattle as a single oral dose at 0.1 mg/kg, avermectin b(1a) was >95% effective in reducing the numbers of haemonchus placei, ostertagia ostertagi (including ... | 1979 | 464563 |
| 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 ... | 1978 | 574246 |
| ultrastructure of intestinal cells of heterakis gallinarum. | ultrastructure of intestinal cells of heterakis gallinarum is described and compared with that of ascaridia galli from ecomorphological point of view. the great analogy in bionomy and ecology of both worms is reflected in the great analogy of ultrastructural construction. a new organoid in the intestinal cells of h. gallinarum, hitherto unknown among nematodes, is also described. it is of a vacuole-like shape running in stripes close under the terminal bar. the paper is also meant to be a supple ... | 1978 | 697114 |
| 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 ... | 1977 | 864223 |
| labial sense organs of the nematode, heterakis gallinarum. | the labial sense organs of heterakis gallinarum (schrank 1788) were examined by scanning and transmission electron microscopy. two large doublet papillae are visible externally on the dorsal lip while a single doublet papilla, a short peglike ventrolateral papilla, and the opening of the amphid are visible on each subventral lip. internal anatomy of these papillae indicates that the doublet papillae are probably pressure receptors while the ventrolateral papillae may be combined mechano- and che ... | 1977 | 864572 |
| 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 ... | 1976 | 945571 |
| [effect of some trace elements on heterakis gallinarum invasion]. | it was found that sodium chloride at the rate of 0.5 per cent in the mixtures lowers by 25 times the survival of the heterakis helminths in birds, prevents the manifestation of verminous typhlitis, alters the ratio between the female and the male worms in favour of the latter, contributes to the increase in body weight and rises the level of the total protein in the blood serum, and changes the protein spectrum raising the level of globulins. positive results at a lower size were established in ... | 1976 | 951930 |
| post-labial sensory structures on the cecal worm, heterakis gallinarum. | sense organs that lie just posterior to the lips on the sides of the body of heterakis gallinarum have been examined by scanning and transmission electron microscopy. the sense organs appear externally as a short peg surrounded by a collarlike elevation of cuticle. each sense organ contains the endings of 2 sensory dendrites; 1 extending to the tip of the peg is probably chemosensitive, while the other ending just within the cuticular cylinder that projects internally from the peg, is probably m ... | 1976 | 957036 |
| 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 ... | 1975 | 1171270 |
| 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 ... | 1975 | 1206213 |
| helminths of guinea fowl (numida meleagris) in bashkir assr. | guinea fowl from different regions of bashkir autonomous soviet socialist republic (bassr) were examined for helminths. of the 547 fowl examined, 451 (82.4%) harboured at least one species of helminth. a total of 56,772 helminths were collected and classified. of this number seven were found to be trematodes, 25 cestodes and 56,740 nematodes. five species of helminths were identified. amongst infected birds, trematodes were present in three (0.7%), cestodes in eight (1.8%) and nematodes in 451 ( ... | 1991 | 1882502 |
| research note: use of fenbendazole for the treatment of turkeys with experimentally induced nematode infections. | turkeys were raised under parasite-free conditions until 25 days of age at which time the birds were administered infective ova of capillaria obsignata, heterakis gallinarum, and ascaridia dissimilis. at 28 days postinfection, four groups of birds were placed on rations medicated with fenbendazole at 15,30,45, or 60 ppm. these rations were given ad libitum for 6 consecutive days. at 31 days postinfection, five additional groups of birds were placed on rations medicated with fenbendazole at 15,30 ... | 1991 | 1924100 |
| 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 ... | 1991 | 1953586 |
| a survey of infectious diseases in wild turkeys (meleagridis gallopavo silvestris) from arkansas. | wild turkeys (meleagridis gallopavo silvestris) trapped as part of a relocation program by the arkansas game and fish commission were tested for selected infectious diseases and parasites. the 45 birds were trapped at four locations in pope, scott, and montgomery counties (arkansas, usa). forty-four blood samples for serology, 27 blood smears and 12 fecal samples were collected. of the serum samples tested, 20 of 44 (45%) were positive for pasteurella multocida by enzyme-linked immunosorbent ass ... | 1990 | 2250323 |
| ivermectin in the treatment of helminthiasis in caged raised adult guinea-fowl (numida meleagris galeata pallas). | the treatment of natural infections of helminthiasis in caged raised guinea-fowls indicates a high efficacy of ivermectin in the elimination of infection due to both juvenile and adult stages of heterakis gallinarum, ascaridia galli, subulura suctoria, raillietina spp. and capillaria caudinflata at dose levels of 0.07 mg/kg and 0.14 mg/kg per adult bird, subcutaneously administered. guinea-fowls treated responded with no observable side effect and remained clean of any helminth infection for ove ... | 1989 | 2626577 |
| a pathologic study of wild turkeys in connecticut. | during the 1984 to 1986 spring hunting seasons in connecticut, viscera from 300 hunter-killed wild turkeys and blood samples from live-trapped wild turkeys were examined in order to establish a health profile on the state's wild turkey population. seven species of endoparasites were recovered from 224 (75%) of 300 birds: metroliasthes lucida, ascaridia dissimilis, heterakis gallinarum, syngamus trachea, capillaria species, trichomonas gallinarum, and eimeria species. the most prevalent parasites ... | 1988 | 3168472 |
| 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 ... | 1988 | 3202777 |
| ivermectin in the control of helminthiasis in guinea fowl numida meleagris galeata pallas. | guinea fowls (numida meleagris galeata pallas) were treated with subcutaneous injection of ivomec at dose rate of 0.14 mg/kg to control and reduce mortalities due to helminthiasis. ten hours after treatment faecal droppings contained both adult and larval stages of ascaridia galli, heterakis gallinarum, subulura suctoria and fragments of raillietina spp. recovery was found 48 hours later. drug efficacy was 100%. | 1988 | 3376414 |
| heterakis gallinarum: radioimmunoassay of antigenic molecules in parasite cuticular extracts. | | 1987 | 3609226 |
| 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 ... | 1986 | 3814008 |
| acquired resistance to experimental heterakis gallinarum infections in pheasants: relative immunity conferred by exposure to heterakids of different ages. | | 1974 | 4430821 |
| the reproductive potential of heterakis gallinarum in various species of galliform birds: implications for survival of h. gallinarum and histomonas meleagridis to recent times. | | 1974 | 4472382 |
| reciprocal responses of eight species of galliform birds and three parasites: heterakis gallinarum, histomonas meleagridis, and parahistomonas wenrichi. | | 1972 | 4672961 |
| two consecutive transfers of heterakis gallinarum: effects on caecal worms and on histomonads. | | 1973 | 4737473 |
| means of acquisition of histomonas meleagridis by eggs of heterakis gallinarum. | | 1973 | 4799084 |
| heterakis gallinarum in the guniea fowl, numida meleagris: survival and comparative potential for transmitting histomonas meleagridis. | | 1974 | 4856050 |
| experimental infections with histomonas meleagridis and heterakis gallinarum in ducks and geese. | | 1974 | 4859326 |
| transfer of ten-day heterakis gallinarum larvae: effect on retention and development of the heterakids, and liberation of histomonas and parahistomonas. | | 1972 | 5065316 |
| the structure and development of the protozoon histomonas meleagridis in the male reproductive tract of its intermediate host, heterakis gallinarum (nematoda). | | 1971 | 5167774 |
| the structure and development of histomonas meleagridis (mastigamoebidae: protozoa) in the female reproductive tract of its intermediate host, heterakis gallinarum (nematoda). | | 1969 | 5361690 |
| [morphological changes of ova of ascaridia galli and heterakis gallinarum induced by ultraviolet rays]. | | 1969 | 5387976 |
| [epizootic significance of research on organophenotes in a lowland population of heterakis gallinarum. i]. | | 1969 | 5387977 |
| [biocenosis of ascaridia galli, heterakis gallinarum and salmonella gallinarum and its importance in the pathogenesis of chicken typhoid]. | | 1969 | 5392120 |
| the structure and development of histomonas meleagridis (mastigamoebidae: protozoa) in the female reproductive tract of its intermediate host, heterakis gallinarum (nematoda). | | 1969 | 5393719 |
| performance in chickens and turkeys of chicken-adapted heterakis gallinarum. | | 1970 | 5444572 |
| isolation of histomonas meleagridis from embryonated eggs of heterakis gallinarum. | | 1970 | 5465364 |
| histomonas meleagridis and h. wenrichi: time of acquisition by heterakis gallinarum. | | 1971 | 5545027 |
| acquisition and liberation of histomonas wenrichi by heterakis gallinarum. | | 1968 | 5689357 |
| case report--coumaphos, a new anthelmintic for control of capillaria obsignata, heterakis gallinarum, and ascaridia galli in chickens. | | 1969 | 5813244 |
| transmission of histomoniasis with male heterakis gallinarum (nematoda). | | 1969 | 5814151 |
| infections with heterakis gallinarum in chickens following recovery from histomoniasis. | | 1966 | 5912228 |
| effects of x-ray dosages on development of heterakis gallinarum. | | 1966 | 5929948 |
| susceptibility of japanese quail (coturnix coturnix japonica) to heterakis gallinarum and histomonas meleagridis. | | 1966 | 5972258 |
| blood and gastrointestinal parasites of eastern wild turkeys from kentucky and tennessee. | fifty-nine gastrointestinal tracts and 52 blood samples were collected from eastern wild turkeys (meleagris gallopavo silvestris vieillot) during the spring turkey hunts of 1979-1980 from two areas in western kentucky and tennessee. eight species of parasites were recovered, and included (combined prevalence): haemoproteus meleagridis levine, 1961 (25%), hymenolepis carioca (magalhaes, 1898) (44%), metroliasthes lucida ransom, 1900 (25%), raillietina georgiensis (reid and nugara, 1961) (15%), r. ... | 1984 | 6492320 |
| parasitic infections of the grey-breasted helmet guinea-fowl (numida meleagris galeata) in nigeria. | the major helminth parasites found in wild, semi-wild and golden sovereign stock guinea fowl were heterakis gallinarum, ascaridia galli, capillaria caudinflata, raillietina tetragona and r. echinobothrida, while eimeria species was the most important gastro-intestinal protozoan parasite. the incidence of the latter was higher in the semi-wild stock than in the wild stock. necropsy of dead guinea-fowl indicated that a. galli, h. gallinarum and eimeria species were indeed responsible for their dea ... | 1983 | 6683038 |
| 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 ... | 1982 | 6750887 |
| [helminths in broiler geese fattened in runs]. | the occurrence of helminths in broiler geese was studied in the rapid-fattening technological system in 1974-1978. the birds were kept on grassy run adjacent to water. helminthological examination was performed in 1065 broilers and the following 16 helminth species were revealed: notocotylus attenuatus (0.3%), apatemon gracilis (1.5%), cotyrulus cornutus (0.1%), hypoderaeum conoideum (0.1%), retinometra longicirrosa (3.2%), drepanidotaenia lanceolata (3.1%), sobolevicanthus fragilis (0.7%), dior ... | 1980 | 6781122 |
| meiosis and some aspects of cytological mechanisms of chromosomal sex determination in nematode species. | meiotic division in toxascaris leonina, baylisascaris transfuga, hexametra sp., toxocara canis, t. cati, heterakis gallinarum and physaloptera clausa of the class nematoda were studied. chromosomal sex determination type in different taxa is described. the xx-xo type of sex determination predominates in the species examined. a y chromosome occurs only in b. transfuga. a correlation between the number and length of sex chromosomes and autosomes in the different taxa was established. | 1995 | 7635621 |
| 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 ... | 1994 | 8002885 |
| a survey of sixty turkey flocks exhibiting hepatic foci taken at time of processing. | fifty turkey flocks including 24 16-week-old male flocks and 26 20-week-old male flocks were sampled at time of processing. hepatic foci were cultured for aerobic and anaerobic bacteria. the majority of these did not have any bacteria recovered from the lesions. of the bacteria that were recovered, most were facultative anaerobes, with escherichia coli and salmonella sp. comprising the most common isolates. all of the birds examined (300 total) for parasites were infected with varying levels of ... | 1996 | 8790901 |
| in vitro anthelmintic activity of root-tuber extract of flemingia vestita, an indigenous plant in shillong, india. | the in vitro activity of root-tuber-peel extract of flemingia vestita, an indigenous plant consumed by the natives in northeast india, was tested against helminth parasites. live parasites (nematode: ascaris suum from pigs, a. lumbricoides from humans, ascaridia galli and heterakis gallinarum from domestic fowl; cestode: raillietina echinobothrida from domestic fowl; trematode: paramphistomum sp. from cattle) were collected in 0.9 % physiological buffered saline (pbs) and maintained at 37 +/- 1 ... | 1997 | 9197399 |
| 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 ... | 1997 | 9271471 |
| 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 ... | 1998 | 9706082 |
| regulation of nematode fecundity in the ring-necked pheasant (phasianus colchicus): not just density dependence. | patterns of nematode fecundity were investigated for infections of the caecal worm heterakis gallinarum in the ring-necked pheasant (phasianus colchicus). worm length was a good predictor of parasite fecundity. after controlling for worm length no other factors, including parasite intensity, were related to worm fecundity. density dependence in worm size was detected in natural infections at parasite intensities above a threshold of 96 worms (worm size decreased with increasing parasite intensit ... | 1999 | 10340333 |
| an outbreak of histomoniasis in turkeys infected with a moderate level of ascaridia dissimilis but no heterakis gallinarum. | histomoniasis was diagnosed in a commercial turkey flock. all morbidity and mortality occurred in one house. birds exhibited lesions characteristic for histomoniasis, and the diagnosis was confirmed by histopathologic examination. affected turkeys were infected with moderate levels of ascaridia dissimilis but not heterakis gallinarum. compression smears of hepatic tissues showed typical histotrophic phase histomonas meleagridis, whereas cecal smears exhibited large numbers of trichomonas gallina ... | 1999 | 10396651 |
| [heterakis infection in numida meleagris (numididae)]. | a case of caecum nematodiasis is described in a guinea fowl (numida melagris) from the municipal zoo, presidencia roque saenz peña (chaco) argentina. nematodes obtained from the caecum were observed in optic microscopy. according to their morphometric characteristics and location in the definitive host, were identified as belonging to the family heterakidae, species heterakis gallinarum, (schrank, 1788) maden, 1949. | 1998 | 10413882 |
| 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 ... | 1999 | 10579399 |
| 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 ... | 2000 | 10821963 |
| intensity of nematode infections in cyclic and non-cyclic rock partridge (alectoris graeca saxatilis) populations. | populations of rock partridge (alectoris graeca saxatilis), in the trentino province of italy, exhibit cyclic fluctuations in abundance associated with relatively dry habitat. one of the hypothesis to explain these cycles is that survival of some free living parasitic stages and rates of infection are greater in these areas leading to higher parasite burden. this hypothesis was examined by investigating the intensity of parasite infection in cyclic and non cyclic rock partridge populations. anal ... | 1999 | 10870561 |
| spring survey of the parasite heterakis gallinarum in wild-living pheasants in britain. | | 2000 | 11014488 |
| 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. | 2000 | 11212938 |
| differential impact of a shared nematode parasite on two gamebird hosts: implications for apparent competition. | if the deleterious effects of non-specific parasites are greater on vulnerable host species than on reservoir host species then exclusion of the vulnerable host through apparent competition is more likely. evidence suggests that such a mechanism occurs in interactions between the ring-necked pheasant (plasianus colchicus), the grey partridge (perdix perdix), and their shared caecal nematode heterakis gallinarum. modelling of the system predicts that the reduced parasite impact on the pheasant co ... | 2001 | 11272650 |
| the role of oxygen availability in the embryonation of heterakis gallinarum eggs. | the importance of oxygen availability in the embryonation of the infective egg stages of the gastrointestinal nematode parasite heterakis gallinarum was studied in the laboratory. unembryonated h. gallinarum eggs were kept under either aerobic conditions by gassing with oxygen, or anaerobic conditions by gassing with the inert gas nitrogen, under a range of constant temperatures. oxygenated eggs embryonated at a rate influenced by temperature. conversely, eggs treated with nitrogen showed no emb ... | 2000 | 11428339 |
| 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 ... | 2001 | 11732422 |
| the effect of an experimental infection of the nematode heterakis gallinarum on hand-reared grey partridges perdix perdix. | we compared 26 hand-reared grey partridges given an experimental infection of the caecal nematode heterakis gallinarum with 26 uninfected ones. under laboratory conditions after 91 days, there were no measurable clinical effects of the infection. we found no effect of treatment on the amount of food eaten or on caecal dropping production. however, treated birds, in particular females, developed slightly lower body mass (around 2%) compared to the controls. at post-mortem examination, we found a ... | 2002 | 12049415 |
| 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 ... | 2002 | 12114010 |
| comparing growth and condition in post release juvenile common pheasants on different diets. | abstract we studied juvenile common pheasants phasianus colchicus in 10 large open-topped release pens in woodlands on a shooting estate in southern england in 1998. in six pens the pheasants were fed a pelleted high-protein feed from 6 to 16 wk of age; in the four other pens they were fed the diet from 6 to 10 wk and then wheat grain only from 10 to 16 wk. natural plant and animal food was also available to the birds in and around the release pens. when a sample of previously tagged, numbered, ... | 2002 | 12211313 |
| stochasticity accelerates nematode egg development. | day-degrees models of nematode development assume that temperature stochasticity has no effect on the development rate of infective stages as long as the mean temperature is held constant. this assumption was tested in this study. unembryonated heterakis gallinarum eggs were subjected to nocturnal and diurnal daily temperature cycles at 12 and 17 c. respectively, and embryonation was compared with eggs subjected to similar stochastic daily cycles, in which random normal variations in the tempera ... | 2002 | 12537129 |
| correlates of helminth community in the red-legged partridge (alectoris rufa l.) in spain. | between 1992 and 1996, 587 wild red-legged partridges (alectoris rufa) from 16 spanish provinces were examined to study the variations of helminth communities in this game species across a broad geographical area. the survey revealed 13 species of helminth parasites. dicrocoelium sp.. rhabdometra nigropunctata, and cheilospirura gruweli were the most common species, whereas raillietina bolivari, choanotaenia infundibulum, tetrameres sp., and capillaria anatis were the most rare. subulura suctori ... | 2003 | 12880240 |
| direct lateral transmission of histomonas meleagridis in turkeys. | the lateral transmission of histomonas meleagridis in turkeys was studied in floor pens without the presence of heterakis gallinarum. battery-reared poults (120) were transferred at 2 wk of age to concrete-floored floor pens with fresh pine shavings litter (40/group). one group received no exposure. in other groups, either 10% or 25% of the birds were inoculated per cloaca with cultured h. meleagridis (200,000/bird) and placed in the pens as seeder birds. inoculated birds died at 10-18 days post ... | 2003 | 12887212 |
| a study on the parasitic helminths of domestic duck(anas platyrhynchos var. domestica linnaeus) in korea. | during february 1982 to septemner 1983, a total of 105 domestic ducks (anas platyrhynchos var. domestica linnaeus) were collected from ichon gun, puasn city, chunchon city, yanggu gun, taejeon city and unknown areas in korea. in the results, six trematode and one nematode species of helminth parasites were obtained and described as follows: amphimerus anatis yamaguti, 1933, echinostoma miyagawai ishii, 1932, echinochasmus japonicus tanabe, 1926, cryptocotyle sp., notocotylus attenuatus (rudolphi ... | 1984 | 12891015 |
| [study of the exogenous development of the ovum of heterakis gallinarum under laboratory conditions]. | | 1965 | 14313540 |
| larval development of cecal worm (heterakis gallinarum) in chickens. | | 1965 | 14344004 |
| on the interaction between heterakis gallinarum, ascaridia galli, "blackhead" and the chicken. | | 1962 | 14468131 |
| nodular typhlitis associated with the nematodes heterakis gallinarum and heterakis isolonche in pheasants: frequency and pathology with evidence of neoplasia. | an investigation related to the frequency and pathology of heterakis gallinarum and pathology of heterakis isolonche in pheasants from rio de janeiro, brazil was conducted by means of clinical examinations, necropsies, and histopathological analysis in 50 ring-necked pheasants from backyard flocks of 11 localities; also, histological sections of caeca of golden pheasants deposited in the helminthological collection of the oswaldo cruz institute (chioc) have been considered in the present study. ... | 2004 | 15049081 |
| 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 ... | 2004 | 15214699 |
| a mathematical model of the population dynamics of heterakis gallinarum in turkeys (meleagridis gallopavo). | heterakis gallinarum is a relatively nonpathogenic organism, but it is important as the transport host for the pathogenic protozoan histomonas meleagridis. a mathematical model was developed to describe the population dynamics of heterakis gallinarum in a turkey flock to study its kinetics in a number of hosts. the model includes quantitative (parasite burden) and qualitative (number of hosts without mature parasite) descriptions of these dynamics. to understand the role of heterakis as a transp ... | 2004 | 15510545 |
| infection of turkeys with histomonas meleagridis by the cloacal drop method. | the infection of turkeys with histomonas meleagridis was attempted in the absence of its normal vector heterakis gallinarum, using several experimental techniques. battery-reared poults were inoculated at 2 wk of age with histomonads cultured in vitro, by several routes, including (a) per os (po), (b) intradoacal (ci), and (c) cloacal drop (cd). feed restriction was also studied as a predisposing factor. intracloacal inoculation (ci) consistently produced severe infections in all experiments. in ... | 2004 | 15666855 |
| 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 ... | 2005 | 15907572 |
| the helminth fauna of the barbary partridge alectoris barbara in tenerife, canary islands. | the helminth fauna of the barbary partridge (alectoris barbara) in tenerife island (canary archipelago) was studied from 2001 to 2002, as there were no records of helminths from this host in the canary islands. seven helminth species were identified: two cestodes choanotaenia infundibulum and lyruterina nigropunctata, and five nematodes aonchotheca caudinflata, baruscapillaria obsignata, eucoleus annulatus, ascaridia galli and heterakis gallinarum. lyruterina nigropunctata, a. galli and e. annul ... | 2005 | 15946395 |
| survey on helminthofauna in pheasants from eastern europe. | in order to assess the parasitological status in imported pheasants, 51 birds (phasianus colchicus) coming from poland and rumania and used in italy in repopulation interventions for hunting purposes were examined. from each animal the trachea, oesophagus, crop and intestine were collected and examined for the presence of nematodes. the examination of the oesophagi and crops of 5 birds revealed the presence of parasites pertaining to the family capillariidae: eucoleus contortus was found in all ... | 2005 | 16252480 |
| blackhead disease in turkeys: direct transmission of histomonas meleagridis from bird to bird in a laboratory model. | the spread of histomonas meleagridis infections through groups of turkeys in the absence of the cecal worm vector (heterakis gallinarum) was studied in a battery cage model. battery-reared poults were exposed at 2 wk of age by commingling with infected birds into cages that had the floor lined with paper. one treatment received no exposure, whereas other birds were commingled with two, three, or four birds/cage (25%, 37.5%, or 50%) inoculated per cloaca with cultured h. meleagridis (200,000/bird ... | 2005 | 16252483 |
| evaluation of dietary natustat for control of histomonas meleagridis in male turkeys on infected litter. | histomoniasis (histomonosis, infectious enterohepatitis, or blackhead) is a disease of turkeys on litter or range caused by the protozoan histomonas meleagridis, a parasite of worms, primarily spread in feces, in heterakis gallinarum (cecal worm) eggs, or in eisenia foetida (earthworms). in this trial, natustat (alltech, inc., nicholasville, ky), a proprietary plant-derived product, was used at 1.925 kg/tonne and compared with nitarsone in male hybrid turkey diets to 42 days of age on histomonad ... | 2005 | 16252499 |
| 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 ... | 2005 | 16404985 |
| 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. ... | 2006 | 16541258 |
| [the helminth and coccidial fauna of pheasants (phasianus colchicus) in view of the specific environmental conditions in pheasantries and in the wild]. | between october 1999 and january 2000 all together 151 male pheasants were examined for endoparasites. 33 one-year-old birds came from two pheasantries, the remaining 118 birds, aged between one and five years, were wildlife animals. the infestation extensy of all pheasants with endoparasites were 96.7%. a mostly low infestation with coccidia of the three species eimeria (e.) phasiani, e. duodenalis and e. tetartooimia were detected in 41% of all birds. e. tetartooimia was found in germany for t ... | 2006 | 17009712 |
| prevalence and pathology of the nematode heterakis gallinarum, the trematode paratanaisia bragai, and the protozoan histomonas meleagridis in the turkey, meleagris gallopavo. | the prevalence of infection and associated pathology induced by two helminth and one protozoan species infecting brazilian turkeys are reported. the intestinal nematode heterakis gallinarum appeared with a prevalence of 70% in the infected birds, without gross lesions when not associated to the protozoan histomonas meleagridis. histological findings in the ceca were represented by the presence of h. gallinarum worms, intense chronic diffuse inflammatory processes with mononuclear and polymorphon ... | 2006 | 17072483 |
| the effect of an indirect anthelmintic treatment on parasites and breeding success of free-living pheasants phasianus colchicus. | in great britain free-living common pheasants phasianus colchicus are often managed at high densities owing to their popularity as a quarry species. they are prone to infection by a range of parasite species including heterakis gallinarum, capillaria spp. and syngamus trachea. in 1995 the efficacy of an indirect anthelmintic technique for controlling parasitic worm burdens of pheasants was determined in a pilot study on a shooting estate in the south of england. between 2000 and 2003 a large-sca ... | 2006 | 17125551 |
| 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 ... | 2006 | 17137053 |
| how effective is pre-release nematode control in farm-reared red-legged partridges alectoris rufa? | game bird farming is associated with high parasite levels that reduce farm productivity, reduce survival after releasing, and may pose a health risk for natural populations. the efficacy of albendazole (orally, 20 mg kg(-1) was evaluated in farmed red-legged partridges naturally infected with the nematodes aonchotheca caudinflata and heterakis gallinarum. in treated birds body condition improved, nematode egg deposition was reduced and the proportion of gravid a. caudinflata females was reduced, ... | 2007 | 17381875 |
| 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 ... | 2007 | 17847826 |
| [intestinal parasites of parrots]. | the aim of this study was to determine a parasitic species composition, prevalence and intensity of infection in selected parrots. | 2007 | 17912808 |
| heterakis gallinarum (schrank, 1788) nec heterakis gallinae (gmelin, 1790). | | 1949 | 18138190 |
| 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 ... | 2008 | 18265756 |
| 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 ... | 2008 | 18329115 |
| 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 ... | 2008 | 18422252 |
| 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 ... | 2008 | 18502584 |
| 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 ... | 2008 | 18605376 |
| do stocking rate and a simple run management practice influence the infection of laying hens with gastrointestinal helminths? | the aim of this experiment conducted at four sites in switzerland was to investigate the transmission and infectivity of the two main helminth parasite species of poultry (ascaridia galli and heterakis gallinarum) in outdoor runs with two different stocking rates. additionally, the influence of a simple management practice (mowing of run) on helminth transmission was studied. three run types were created on each site: runs c served as control (stocking rate 10 m(2)/hen, no management), runs b co ... | 2009 | 19019546 |