| [helminthiases in newly established large-capacity breeding stations for cattle]. | invasions of gastrointestinal nematodes proved to be the most frequent helminthiases in new-established large-capacity herds of cattle according to the results of parasitary examinations of cattle in one locality in the tachov district. the nematodes, especially oesophagostomum spp., haemonchus contortus, cooperia spp., trichostrongylus spp., occurred in animals of all age categories. the ostertagia spp., chabertia ovina, nematodirus spp., bunostomum phlebotomum and trishuris spp. participated i ... | 1978 | 97836 |
| survey of helminth infections in maine dairy cattle. | the survey was done to determine the incidence and seasonal prevalence of the gastrointestinal helminths infecting maine dairy cattle. approximately equal groups of calves, heifers, and cows from 13 dairy farms, managerially and geographically representative of dairying in the state, were sampled at regular 2-month intervals over the period of a year. on the basis of fecal egg counts and identification of cultured larvae, the following results were obtained: of the 94 adult cows, 78 heifers, and ... | 1975 | 127538 |
| [endoparasites of calves in large herds]. | the authors present preliminary results of the coprological examination of calves in large-capacity calf-houses. in a new large-capacity calf-house in the benesov district in the central-bohemian region, 200 samples of faeces were examined according to breza (1957) and further examinations were performed regularly in a group of 42 calves from the age of 0.5 to 6 months. the tests revealed 13 species of endoparasites, including eight species of coccidia: eimeria auburnensis, e. alabamensis. e. bo ... | 1977 | 413242 |
| [parasites of the gdr. 3. endoparasites of the hare (lepus europeus)]. | 96 hares from the eastern region of the dresden district were examined for endoparasites and the results compared with those of other authors from gdr and the neighbouring countries. out of the 27 endoparasites which up till now are recorded in the middle european region in gdr are found 6 coccidia-spp.: eimeria leporis, e. robertsoni, e. townsendi, e. semisculpta, e. europaea, e. hungarica and the helminths: fasciola hepatica, dicrocoelium dendriticum, cittotaenia denticulata, andrya rhopalocep ... | 1979 | 507443 |
| chromatin diminution and a chromosomal mechanism of sexual differentiation in strongyloides papillosus. | eggs obtained from feces of rabbits infected with strongyloides papillosus were squashed and the karyotypes were determined. they contained cells with either two long and two medium sized chromosomes (2l2m), or one long, three medium and one short chromosome (l3ms). two types of parasitic female gonad could be distinguished on the basis of oocyte chromosome morphology at prometaphase of the maturation division. all the oocytes in a gonad contained either two upaired long chromosomes and two unpa ... | 1979 | 533664 |
| cryopreservation of the infective larvae of the common nematodes of ruminants. | exsheathed infective larvae (l 3) of 19 species of nematodes were tested for infectivity in either sheep or cattle after they had been frozen in 0,9% nacl solution, stored for a relatively short time in the gas phase of liquid nitrogen and subsequently thawed. in addition, 13 of these species were tested after similar storage for up to 18 months. in sheep, haemonchus contortus, ostertagia circumcincta, trichostrongylus axei, trichostrongylus colubriformis, nematodirus spathiger and oesophagostom ... | 1977 | 566412 |
| cytology, reproduction, and sex determination of strongyloides ransomi and s. papillosus. | parasitic females of strongyloides ransomi and strongyloides papillosus have 4 chromosomes and reproduce exclusively by mitotic (apomictic) parthenogenesis. the free-living generation includes females and males. the females have 2 pairs of chromosomes of unequal size and reproduce by meiotic parthenogenesis following obligatory pseudofertilization (gynogenesis). the males undergo spermatogenesis by the regular meiotic process and have the same chromosomal complement as the females. during propha ... | 1977 | 592051 |
| effect of relative humidity on the free-living stages of strongyloides papillosus (rhabdiasoidea: nematoda). | the eggs and larvae are affected by the changes in the humidity level around them. the eggs do not develop below 87% relative humidity at 30 degrees c and 25 degrees c. at sub-developmental rel. hum. they remain viable for 30 h at 81%, but at 73% rel. hum. level they do not survive beyond 18 h. survival of larvae in 100% rel. hum. is longer at 30 degrees c than at 25 degrees c and 35 degrees c, and also they exhibit a poor resistance to desiccation. | 1978 | 658231 |
| recovery of nematodes from ruminants by migration from gastro-intestinal ingesta and mucosa gelled in agar: preliminary report. | when gastro-intestinal ingesta and mucosa containing larvae or adult haemonchus contortus, ostertagia circumcincta. trichostrongylus colubriformis, strongyloides papillosus, nematodirus spathiger, gaigeria pachyscelis, oesophagostomum columbianum or chabertia ovina were suspended in 0,75--1,00% agar gel and incubated in physiological saline, a mean of 93,6% of the helminths migrated from the agar-ingesta or agar-mucosa into the physiological saline. the lowest suitable concentration of agar was ... | 1978 | 704042 |
| immunodiffusion and electrophoretic analysis of antigens from strongyloides papillosus. | | 1975 | 806333 |
| [immunogenic value of larval somatic antigen of strongyloides papillosus in experimental strongyloidosis in rabbits]. | | 1976 | 983058 |
| efficacy of albendazole against gastrointestinal nematodes of cattle. | forty-five calves with artificial and pasture-acquired nematode infections were medicated with albendazole at dose levels of 0, 2.5, 5.0, or 10 mg/kg of body weight. a dose level of 2.5 mg/kg removed at least 99% of adult trichostrongylus axei, trichostrongylus colubriformis, cooperia oncophora, and bunostomum phlebotomum. burdens of haemonchus contortus, strongyloides papillosus, and ostertagia ostertagi were reduced 79, 88, and 97%, respectively. at a dose level of 5.0 mg/kg, at least 95% of a ... | 1976 | 999077 |
| efficacy of p-toluoyl chloride phenylhydrazone against gastrointestinal helminths in ovines. | a new anthelmintic candidate, p-toluoyl chloride phenlylhydrazone, was administered to lambs in a paste formulation. the efficacy of this drug was determined at dose rates of 20, 30, 40, and 50 mg of active ingredient per kilogram of body weight. helminths expelled by these dosages included haemonchus contortus, ostertagia circumcicta, trichostrongylus colubriformis, t. axei, nematodirus filicollis, cooperia curticei, strongyloides papillosus, oesophagostomum columbianum, bunostomum trigoncephal ... | 1976 | 1263040 |
| helminths of sheep and goats in desert areas of south-west mauritania (trarza). | faecal samples were obtained from sheep and goats before, during and after the rainy season at three locations in south-west mauritania. several animals were also necropsied at the same time. haemonchus contortus was the most prevalent worm. infection by digestive-tract strongyles and strongyloides papillosus was always very light (prevalence less than 20%). sheep were more heavily infected than goats but animals under 1 year of age were not infected by digestive-tract strongyles. it is likely t ... | 1992 | 1295205 |
| sudden death of calves by experimental infection with strongyloides papillosus. ii. clinical observations and analysis of critical moments of the disease recorded on videotape. | four calves experimentally infected with different doses of strongyloides papillosus were examined for changes of body temperature and other clinical parameters. also, the critical moments of death, which were recorded on videotape, were analyzed in detail. the first clinical signs included initial accelerated respiration. in general, body temperature was almost normal; however, one calf showed a slight increase after 2 or 3 days of infection, and two calves a gradual increase 7 days after infec ... | 1992 | 1441181 |
| sudden cardiac death in calves with experimental heavy infection of strongyloides papillosus. | for obtaining the preliminary data on the pathogenesis of sudden death in calves naturally heavily infected with strongyloides papillosus, we monitored 8 holstein calves experimentally infected with the larvae on electrocardiographic and pneumographic changes. six calves died suddenly on days 11 to 17 after infection. sinus tachycardia had been recorded continuously since 1 to 6 days before death. heart rates increased gradually until death. since 1 or 2 days before death, various patterns of ta ... | 1992 | 1477164 |
| gastrointestinal helminths and lungworms of french dairy goats: prevalence and geographical distribution in poitou-charentes. | a study was conducted on 81 dairy-goat farms in western france. faecal samples were collected once and 31 culled goats were necropsied in order to assess their gastrointestinal and respiratory helminth species, their prevalences and the intensities of infection as well as their geographical distribution in six subregions of the surveyed area. fifteen species of helminth were recovered. the most frequent were muellerius capillaris, trichostrongylus colubriformis and teladorsagia circumcincta with ... | 1992 | 1494857 |
| sudden death of calves by experimental infection with strongyloides papillosus. i. parasitological observations. | recently, an unknown disease, 'sudden death', in calves has been found in japanese beef production farms. a previous study conducted by taira and ura indicated that sudden death can be effected in calves by hyperinfection of strongyloides papillosus (spl) and that the disease is possibly caused by spl infection. in the present work, an experimental infection of spl in calves was conducted to confirm the field occurrence. fifteen holstein friesian calves, ranging from 45.5 to 85.6 kg in body weig ... | 1992 | 1496784 |
| gastro-intestinal parasitism of cattle in native pasture grazing system in guadeloupe (french west indies). | gastro-intestinal parasitism of creole cows and calves, limousin x creole cross calves and brahman x creole cross calves was recorded during seasons of calving in a native grazing system in guadeloupe, a wet tropical area. calvings were pooled during the dry season for two herds and during the rainy season for two other herds. for each calving season, calves of one herd were drenched monthly with anthelmintic. a marked periparturient rise in egg excretion was observed in cows. coccidial infectio ... | 1991 | 1763489 |
| epizootiology of helminth parasitism in a beef cow/calf herd in minnesota. | to test the effect of a parasite control program for cattle, 2 groups of similar composition were grazed on separate, but equivalent, improved pastures. cattle in 1 group were treated with fenbendazole at 5.0 mg/kg of body weight at the time they were turned out on pasture in the spring and again at midsummer, when the cattle were moved to a new pasture. the control group was not treated. parasite egg counts were significantly (p less than 0.04) lower in the treated group. trichostrongyle-type e ... | 1991 | 1767995 |
| [methods of isolating pure cultures of invasive intestinal helminth larvae of the genus strongyloides, suborder strongylata]. | a special diagnostic laboratory aid l-star has been made and new methodics has been worked out of isolating pure cultures of invader larvae of strongyloides papillosus and nematodes of ruminant gastrointestinal tract of the strongylata suborder from various substrates. l-star competes successfully with a currently used device and with potential modifications of baermann's method (1917). invader larvae of strongyloids and strongylata are easy to recover in a short time if l-star is used. when the ... | 1991 | 1807035 |
| sudden death in calves associated with strongyloides papillosus infection. | in recent years, a total of 152 calves have died suddenly on three farms in the southern part of japan which used sawdust as litter. calves often died within a few minutes of a violent fall without showing previous clinical signs. on necropsy of these cases, only a slight lesion was observed, although all showed heavy infection with strongyloides papillosus (spl). they appeared to have not only a large number of spl eggs in the faeces, together with many adult spl worms in the intestine, but als ... | 1991 | 1957491 |
| dynamics of faecal egg counts in rabbits experimentally infected with strongyloides papillosus. | an experiment using rabbits was carried out to determine basic data to maintain the calf strain of strongyloides papillosus (spl). rabbits treated with four different numbers of doses of dexamethasone were exposed to 50,000 or about 100,000 infective larvae of spl (himeji strain, 1988). as a result, faecal egg output was valid in individual rabbits, regardless of dexamethasone administration. eggs appeared in the faeces 9 or 10 days after exposure, and increased to as much as 20,000-573,000 eggs ... | 1991 | 1957493 |
| parasites of south african wildlife. vii. helminths of suni, neotragus moschatus, in natal. | the helminths of 4 suni, neotragus moschatus, from the tembe national elephant park, kwazulu, natal, were collected, counted and identified. cooperia hungi, a race of cooperia rotundispiculum, haemonchus vegliai, setaria cornuta, a skrjabinema sp., strongyloides papillosus, trichostrongylus anomalus and trichostrongylus deflexus are new parasite records for suni in africa. megacooperia woodfordi was recovered for the first time from south african antelope. | 1991 | 2052316 |
| the efficacy of ivermectin against strongyloides papillosus in cattle. | the efficacy of ivermectin was evaluated against strongyloides papillosus in four controlled trials in cattle. thirty-four animals were inoculated subcutaneously with s. papillosus 3rd stage larvae 14-24 days before treatment. at 7-14 days after treatment, calves were slaughtered and the number of adult s. papillosus present in the small intestine counted. faecal egg counts were carried out before and after treatment. seventeen control animals received a single subcutaneous injection of vehicle ... | 1990 | 2132447 |
| strongyloides papillosus: prenatal and transmammary infection in ewes. | the absence of larvae in lambs of six infected and controlled ewes immediately killed at birth without suckling may indicate the absence of prenatal infection. the ewes had larvae in their milk immediately prior to lambing and several hours afterwards. the persistence of infection, even after intestinal infection was removed with thiabendazole at 50 mg/kg body weigh, may be due to the pool of inhibited larvae. all the suckling lambs had patent infections within 4 to 5 days. infection of suckling ... | 1990 | 2132791 |
| the significance of the gastrointestinal parasites of asian buffalo in sri lanka. | buffalo aged 3-15 months on institutional farms and in the villages of an irrigation project were monitored for gastrointestinal nematodes by faecal egg counts over two years. apart from treatment for toxocara vitulorum at 10-16 days of age, no anthelmintics were used. half of the strongylid egg counts were zero and 90% were less than 500 epg of faeces on the institutional farms, and 67% were zero and 97% less than 500 epg in the villages. no problems arose during four years without anthelmintic ... | 1990 | 2284708 |
| efficacy of three broad-spectrum anthelmintics against gastrointestinal nematode infections of goats. | groups of 10 goats, harbouring both naturally acquired and experimental infections of gastrointestinal nematodes, were drenched with either levamisole (5 mg kg-1), albendazole (3.8 mg kg-1) or parbendazole (15 mg kg-1), or remained untreated. haemonchus contortus was the numerically dominant infection, with strongyloides papillosus, trichostrongylus colubriformis and oesophagostomum columbianum also present. at 5-6 days post-treatment, goats were killed and necropsied. post-mortem worm counts sh ... | 1989 | 2588471 |
| strongyloides papillosus infestations of lambs in plateau state of nigeria. | the frequent appearance of patent infestations of strongyloides papillosus in lambs under one week is observed, and it is suggested that either the short generation interval or pre-natal infection is the cause. pathogenic effects associated with heavy infestations in young lambs consisted of anorexia, loss of weight, diarrhoea and a moderate anaemia. the lambs were usually very weak, unable to stand and laying prostrate. death usually followed at this stage and three such lambs examined showed s ... | 1989 | 2626576 |
| seasonal prevalence of gastrointestinal nematodes of goats in pernambuco state, brazil. | during each of 36 1-month periods from april 1979 to march 1982, 3-4 goats selected from typical farms were necropsied and examined for gastrointestinal nematodes. the goats were male, 12 months old, born on the farm and raised without any anthelmintic application. at the beginning of each month, from april 1981 to march 1982, three 12-month-old male goats shown to be free of gastrointestinal nematodes after anthelmintic treatment were grazed with a flock of naturally infected goats (tracer goat ... | 1989 | 2728324 |
| parasites of south african wildlife. iv. helminths of kudu, tragelaphus strepsiceros, in the kruger national park. | during ongoing surveys of parasites of wild animals in the kruger national park, a total of 96 kudu. tragelaphus strepsiceros, were culled in the southern part of the park at monthly intervals from april 1981 to march 1983. a single kudu was shot in the same area in november 1983. two more kudu were obtained from pafuri in the northern part of the park during october 1981 and another from near satara in the central part of the park during october 1982. the helminths of all the kudu were collecte ... | 1989 | 2748130 |
| activity of luxabendazole against liver flukes, gastrointestinal roundworms, and lungworms in naturally infected sheep. | the anthelmintic potential of luxabendazole was investigated in sheep harboring mixed naturally acquired helminth infections. results were assessed by comparing worm counts of the treated groups (seven animals each) on days 7-8 posttreatment with those of the nontreated control group, except for protostrongylid lungworms, for which the changes in pre- and posttreatment group mean larval counts/g feces were assessed for intensity effect. a single oral treatment at doses of 10.0 or 12.5 mg/kg body ... | 1988 | 2974592 |
| efficacy of febantel against naturally acquired gastrointestinal nematodes in calves, and recognition of oesophagostomum venulosum in oregon cattle. | the efficacy of febantel (5.0 mg/kg) against naturally acquired infections of gastrointestinal nematodes was evaluated in a controlled test in calves during the winter. twenty steers were allotted to either control or treatment groups of 10 animals each. seven days after treatment, calves were euthanatized and necropsied for recovery of parasites. febantel was highly effective against adults of ostertagia spp (88.6% efficacy based on median), cooperia spp (97.7%), trichostrongylus spp (98.2%), o ... | 1988 | 3223663 |
| metaphylactic deworming program for buffalo calves (bubalis bubalis) in north-east thailand. | one hundred newborn swamp buffalo calves (bubalis bubalis) from three villages in north-east thailand were divided equally into treatment and control groups. treated calves received two doses of a piperazine/thiabendazole mixture (196.6 and 50 mg/kg bodyweight respectively) at three, and again at ten weeks of age. control calves received placebo treatments at the same times. egg excretion rates for the roundworms strongyloides papillosus and toxocara vitulorum were recorded as high as 85% and 58 ... | 1987 | 3432955 |
| evaluation of three formulations of fenbendazole (10% suspension, 0.5% pellets, and 20% premix) against nematode infections in cattle. | anthelmintic efficacies of 3 formulations of fenbendazole were evaluated in cattle naturally parasitized with nematodes: a 10% oral suspension, 0.5% pellets as a top dressing on feed, and a 20% premix. all formulations of fenbendazole were greater than 99% effective in removing adults of haemonchus contortus, ostertagia spp, cooperia spp, and oesophagostomum radiatum. fenbendazole was greater than 96% effective in removing adults of strongyloides papillosus and greater than 85% effective in the ... | 1986 | 3516024 |
| [preliminary observations on the development of strongyloides papillosus (wedl, 1856) in poland]. | | 1986 | 3705586 |
| efficacy of ivermectin against induced gastrointestinal nematode infections in goats. | the efficacy of ivermectin (0.08 per cent w/v oral solution) at different dose levels was evaluated against induced infections of adult haemonchus contortus (21 days old) and trichostrongylus colubriformis (21 days old) and fourth stage larvae of oesophagostomum columbianum (17 days old), ostertagia circumcincta (five days old) and strongyloides papillosus (five days old). twenty-five boergoats (mutton goats) were randomly allocated by bodyweight within each sex to an untreated control group and ... | 1985 | 3840299 |
| the dynamics of strongyloides papillosus primary infections in neonatal and adult rabbits. | | 1974 | 4430947 |
| parthenogenesis in the parasitic and free-living forms of strongyloides papillosus (nematoda, rhabdiasoidea). | | 1973 | 4693091 |
| [effect of experimental strongyloides papillosus infestations on the productivity and metabolism of differently aged sheep. 1. course of infestation and its effect on body-weight]. | | 1971 | 5146653 |
| [effect of experimental strongyloides papillosus infestation on the productivity and metabolism of differently aged sheep. 2. effects on blood cells and seral protein]. | | 1971 | 5146654 |
| [effect of experimental strongyloides papillosus infestations on the productivity and metabolism of differently aged sheep. 3. effect on wool-quality]. | | 1971 | 5146655 |
| [experimental infestation of the calf with strongyloides papillosus]. | | 1971 | 5152944 |
| [resistance of the eggs of strongyloides papillosus to various temperatures]. | | 1971 | 5170400 |
| [strongyloidiasis of the rabbit: trials of active immunization with x-irradiated filariform larvae of strongyloides papillosus]. | | 1969 | 5372769 |
| preliminary observations on the biological effect of uv-rays on the life cycle of strongyloides papillosus. | | 1969 | 5375495 |
| strongyloides papillosus and neoascaris vitulorum naturally acquired mixed infestations of calves in the plateau area of northern nigeria and the treatment given. | | 1970 | 5526757 |
| controlled test of the efficacy of the feed premix formulation of crufomate on the parasites of the gastrointestinal tract and lungs of dairy calves. | activity of the feed premix formulation (m-1839) of crufomate against helminths of the gastrointestinal tract and lungs of cattle was determined in a controlled test. eight calves were treated and 7 were nontreated. the dosage rate of crufomate was 17 mg of active drug/kg of body weight daily for 3 consecutive days. removal activity was high against mature cooperia oncophora (99%) and c punctata (96%) and immature cooperia spp (87%). removal of mature ostertagia ostertagi was 68%. the removal of ... | 1982 | 6213184 |
| anthelmintic efficacy of mebendazole suspension against induced helminth infections in south african sheep and cattle. | critical controlled tests were performed in 157 sheep (8 experiments) and 34 cattle (2 experiments) to evaluate the anthelmintic activity of mebendazole suspension, administered intraruminally via a stomach tube at a dosage rate of 15 mg of mebendazole/kg of body weight, against induced infections of immature and adult stages of commonly encountered nematode parasites in south africa. in the sheep, the controlled efficacy of mebendazole suspension was good to excellent (90.1% to 100%) against al ... | 1984 | 6375485 |
| controlled and clinical evaluations of the anthelmintic activity of a levamisole pour-on formulation against gastrointestinal nematodes in cattle. | beef-type calves (n = 107) with naturally occurring helminth infections were used in a series of 3 controlled experiments to study the anthelmintic activity of a new pour-on formulation of levamisole. in the 1st experiment, the efficacy of a single treatment of levamisole pour-on at a rate of 10 mg/kg of body weight was determined, using a placebo pour-on in a similar volume as a control. in the 2nd experiment, calves were treated with levamisole pour-on at doses 0 (nontreated control), 7.5, 10, ... | 1984 | 6377988 |
| the development of the free-living stages of strongyloides papillosus. i. effect of temperature on the development of the heterogonic and homogonic nematodes in faecal culture. | temperature had a significant effect on the proportion of free-living females and infective larvae of strongyloides papillosus developing from faecal culture. the number of free-living males recovered from cultures incubated at 20 degrees c and 30 degrees c was fairly constant. however, females were most numerous at 30 degrees c and infective larvae at 20 degrees c, with the sum of the two approximately the same at both temperatures. this indicates that infective larvae and females are developin ... | 1983 | 6686378 |
| antiparasitic efficacy of ivermectin in naturally parasitized sheep. | sixteen sheep harboring naturally acquired parasitisms were allocated to 1 of 2 treatment groups: (i) sheep given ivermectin in an oral solution at the dosage rate of 200 micrograms/kg of body weight, and (ii) those given the vehicle at a dosage rate of 0.25 ml/kg. all animals were necropsied at 2 weeks after treatment. parasites and percentages of parasitic reductions, as demonstrated in this trial, were: dictyocaulus filaria (99.4%), oestrus ovis first stage instars (100%), trichuris ovis (98. ... | 1983 | 6689112 |
| [repeated dehelminthization and its effect on the course of the natural infestation, of sheep by roundworms]. | long-continued use of levamizole for the control of gastrointestinal roundworms in sheep kept on pasture showed that the discrepancy in the results obtained in experiments and in the terrain is associated with the physiology of host and parasites. in practical use in the terrain, the preparation had an 85% effect in one case; otherwise the average effect was 61.1% and persisted five to six weeks in all flocks including those in which the animals were treated five times a year. treatment performe ... | 1981 | 6794215 |
| seasonal incidence of helminths in sheep and goats in south mozambique. | the seasonal fluctuations in faecal worm egg counts were studied at monthly intervals for over a year in 20 male sheep and goats on extensive grazing tracts at a farm near maputo, mozambique. larval differentiation from faecal cultures showed that haemonchus contortus and oesophagostomum columbianum were the most prevalent worm species. trichostrongylus colubriformis, cooperia spp., strongyloides papillosus, moniezia spp., paramphistomum spp. and trichuris spp. also occurred. after the onset of ... | 1982 | 6892176 |
| oxfendazole: anthelmintic activity in sheep artificially infected with nematodes. results of trials against nine species including benzimidazole-resistant haemonchus contortus. | in a series of 11 trials, in which 281 lambs were artificially infected with 9 species of nematodes, larval anthelmintic tests were carried out to assess the activity of a dose of 5 mg/kg oxfendazole against all 3 parasitic stages of each species. an efficacy of over 99,4% was obtained against all stages of haemonchus contortus, ostertagia circumcincta, trichostrongylus colubriformis, nematodirus spathiger, gaigeria pachyscelis, chabertia ovina and oesophagostomum columbianum with the exception ... | 1980 | 7005443 |
| the migration of strongyloides papillosus in rabbits following infection by the oral and subcutaneous routes. | for the first 66 hours after the subcutaneous injection of rabbits with the infective larvae of strongyloides papillosus, larvae spread gradually from the injection site to other parts of the body musculature. their number and distribution suggests that they do so by the direct penetration of the tissues as the majority remain close to the site of injection. by 90 hours, however, the appearance of larvae in the lungs, trachea and oesophagus suggests that migration is taking place within the circ ... | 1980 | 7217654 |
| the efficacy of oxfendazole administered as a bolus compared with a drench formulation. | in a flock of 40 ewe lambs of the texel breed the anthelmintic oxfendazole was tested in two different formulations, a 2.265 per cent suspension and a 4 gram bolus containing 151 mg active ingredient. all treatments were based on a dose rate of 5 mg/kg body weight. faecal examinations and larval differentiations were carried out on the day of treatment and two and seven days later. no differences in efficacy were apparent between the two treated groups. oxfendazole in either formulation was 100 ... | 1981 | 7245171 |
| experimental cross-infections with gastrointestinal nematodes of sheep and cattle. | five parasite-free lambs and five parasite-free calves were infected experimentally with 20,000 third stage gastrointestinal nematode larvae cultured from faeces of sheep from five different farms. in the same way five lambs and five calves were infected with larvae cultured from faeces of calves from five different farms. host specificity of the nematodes was determined using the following parameters: infection rate; number, size, and stage of the worms; their distribution within the gastrointe ... | 1981 | 7245840 |
| the epizootiology of nematode parasites of sheep in a high-rainfall area of zimbabwe. | fifty-two untreated lambs from a contaminated flock were slaughtered at regular intervals throughout the year, and their gastro-intestinal tracts were examined for the presence of nematode parasites. haemonchus contortus and oesophagostomum columbianum were found to be of major importance. the incidence of haemonchus rose to a peak and remained at a high level throughout the winter through the fourth larval stages of the parasite predominated at this stage. oesophagostomum columbianum was recove ... | 1981 | 7265099 |
| a re-assessment of the efficacy of febantel (rintal) and fenbendazole (panacur) against strongyloides papillosus in sheep and goats. | an efficacy evaluation using febantel and fenbendazole was carried out against strongyloides papillosus in sheep and goats in the grootfontein area of south west africa/namibia. three groups with five sheep and three goats in each group were artificially infested with this species. when the worms had reached the adult stage one group was treated with febantel, the other group with fenbendazole and the third group left as controls. both anthelmintics were dosed at 5 mg/kg. all animals were sacrif ... | 1980 | 7452659 |
| [the effect of primarily mercury heavy metal emissions on pasture helminthiasis in sheep]. | a group of 30 improved valashka sheep, grazed in submontane pastures 3 and 6 km far from the emission source of mercury-dominated heavy metals (l1 and l2) and in pasture situated out of mercury emission fall-out (k), were investigated for the prevalence and mean intensity of pasture helminth infection. hg concentration in the grass stand was determined by the distance of emission source. the amount of mercury was increasing in the direction from control locality to locality 1, lying 3 km from th ... | 1995 | 7716863 |
| partial characterization of larval antigens of strongyloides papillosus by western blot analysis. | western blotting was used to analyse the antigens in extracts of adult and infective larvae (sil) of strongyloides papillosus with serum of infected rabbits. several proteins in both the extracts reacted with immunoglobulin g in the serum. a protein of about 16 kda in the extract of sil showed an especially strong reaction. no cross-reaction was observed among proteins in the extracts of adult worms of such cattle helminths as fasciola gigantica, homalogaster paloniae, trichuris discolor and set ... | 1994 | 7812315 |
| wasting condition under normal cardiac rhythms in rabbits following strongyloides papillosus infection. | pathogenicity of strongyloides papillosus to rabbits was investigated by monitoring of food intake, body weight and electrocardiogram. no abnormalities were observed in rabbits infected with 10(4) infective larvae (l3)/kg. rabbits given 10(5) l3/kg exhibited anorexia after the establishment of patent infections. four of them died on days 19-33 having lost 32-44% of initial body weight. the other one animal regained appetite and body weight as fecal egg output decreased. cardiac rhythms remained ... | 1994 | 7865572 |
| helminth and arthropod parasites of indigenous goats in the northern transvaal. | helminth and arthropod parasites of 60 female indigenous goats of three age groups on a farm in the northern transvaal were collected, identified and counted. anoplocephalid tapeworms were present in the two younger groups of goats, while larvae of taenia hydatigena were recovered from all three groups. eight species and two genera of nematodes were found in the youngest goats, five species and three genera in the middle group and six species and two genera in the oldest goats. strongyloides pap ... | 1994 | 7898893 |
| comparative efficacy of moxidectin and mebendazole against gastrointestinal nematodes in experimentally infected lambs. | a controlled trial was conducted to determine the anthelmintic efficacies of moxidectin and mebendazole. the compounds were administered orally at doses of 0.2 mg/kg bodyweight and 15.0 mg/kg bodyweight, respectively, to lambs infected experimentally with large numbers of gastrointestinal nematode larvae including a benzimidazole-resistant strain of haemonchus contortus. moxidectin was 100 per cent effective against adult h contortus, ostertagia species, trichostrongylus colubriformis, cooperia ... | 1994 | 7975106 |
| [organ changes in experimental strongyloidosis of rabbits provoked by strongyloides papillosus]. | strongyloidosis was induced by percutaneous injection of rabbits; then organ changes were tested. it has been found that strongyloides papillosus evoked changes in intestine, liver, kidney and lung. no notable changes were found in heart, spleen and suprarenal gland. these changes may be provoked not only directly by the presence of these parasites but also by the products of metabolism of s. papillosus. | 1994 | 7975650 |
| parasitic females of strongyloides papillosus as a pathogenetic stage for sudden cardiac death in infected lambs. | the present study was aimed at elucidating the responsibility of parasitic females for sudden cardiac death following strongyloides papillosus infection in calves. a preliminary experiment demonstrated a percutaneous infection with s. papillosus infective larvae to cause sudden cardiac death in lambs as in calves, indicating lambs could serve as a model to study fatal stronglyloidiasis in calves. parasitic females of s. papillosus were inoculated into the duodenum of lambs. lambs given live worm ... | 1994 | 7999898 |
| seasonal prevalence of gastrointestinal nematodes in communal land goats from the highveld of zimbabwe. | on six occasions during a 1 year period, goats run on communal pastures by small-scale farmers, were purchased, housed indoors for 3 weeks and autopsied for examination of their gastrointestinal nematode burden. all of the 32 goats examined were infected. the four dominant species, haemonchus contortus, trichostrongylus axei, trichostrongylus colubriformis and oesophagostomum columbianum, were present in 88-97% of the animals. three other nematodes, strongyloides papillosus, bunostomum spp. and ... | 1994 | 8171826 |
| activity of doramectin against nematode endoparasites of cattle. | a series of 28 controlled anthelmintic studies, involving 634 cattle, was conducted throughout north america and europe to evaluate the efficacy of doramectin against a broad range of gastrointestinal parasitic nematode species and lungworms in naturally and experimentally infected animals. within each study, one or two groups were treated with doramectin at 200 micrograms kg-1 and another group received no drug treatment. worm burdens were estimated by standardised techniques, and efficacy asse ... | 1993 | 8236735 |
| parasite spectrum and seasonal epidemiology of gastrointestinal nematodes of small ruminants in the gambia. | one hundred and four post mortem examinations of randomly selected sheep (52) and goats (52) were carried out weekly from march 1990 to february 1991. gastrointestinal parasites were identified and counted. a large spectrum of 16 helminth species was found in 101 (97%) infected animals. the nematodes infecting small ruminants were, in order of predominance: trichostrongylus colubriformis (96% of all animals), oesophagostomum columbianum (82%), haemonchus contortus (67%), strongyloides papillosus ... | 1993 | 8249251 |
| sudden death of calves by experimental infection with strongyloides papillosus. iv. electrocardiographic and pneumographic observations at critical moments of the disease. | electrocardiographic and pneumographic observations at critical moments were carried out on five calves that died suddenly following experimental infections with strongyloides papillosus. time which elapsed during these critical moments was calculated from the time of observation of ventricular flutter (vf) to the appearance of accelerated respiration and cessation of respiration. the beginning of accelerated respiration ranged from -19 to 41 s after vf. time (minutes:seconds) of cessation of re ... | 1993 | 8333139 |
| the ecology of animal parasitic nematodes in endemic areas of jos, nigeria. | a survey involving 3418 faecal samples collected from three areas of heavy human and animal activities in jos, nigeria showed that 2354 (68.9%) of the samples harboured various parasitic nematodes of man and animals. altogether, twelve species of parasitic nematodes were encountered. five of these, namely: ascaris lumbricoides, ancylostoma duodenale, necator americanus, trichuris trichiura and strongyloides stercoralis infect man while five others: trichostrongylus probolurus, t. colubriformis, ... | 1993 | 8334456 |
| sudden death of calves by experimental infection with strongyloides papillosus. iii. hematological, biochemical and histological examinations. | nine calves infected percutaneously with graded doses of strongyloides papillosus (spl) were examined for hematological, biochemical and histological changes during the infection. six of the calves infected with the highest larval doses died suddenly and the three calves given lower doses survived. no changes were observed in blood cell counts except for a transient eosinophilia. parameters of the blood coagulation system and blood gas remained normal. a decrease in blood glucose was observed in ... | 1993 | 8493768 |
| efficacy of moxidectin against internal parasites of sheep. | the efficacy of injectable and oral formulations of moxidectin, at a dosage of 0.2 mg kg -1 live mass was evaluated by the non-parametric method (npm) against the most common internal parasites of sheep in 9 trials involving a total of 201 sheep. both formulations obtained an a classification (more than 80% effective in more than 80% of the treated animals) against the third (l3) and fourth (l4) larval and adult stages of haemonchus contortus, teladorsagia circumcineta, trichostrongylus colubrif ... | 1993 | 8496891 |
| helminth parasites and hypobiosis of nematodes in n'dama cattle during the dry season in the gambia. | three series of necropsies of cattle were performed, corresponding to early dry season, approximately 1 month after the last rains (november, n = 6), mid dry season (february, n = 6) and end dry season (april, n = 3). eggs per gram of faeces (epg) were determined just before necropsy. three trematodes (fasciola gigantica, schistosoma spp. and paramphistomatids) and 11 nematodes were identified from cattle, with the prevalence rate varying from 6.7% to 100%. haemonchus contortus was the most abun ... | 1995 | 8644452 |
| coccidial and helminth infections in goats kept indoors in the netherlands. | an investigation was carried out on coccidial and helminth infections in goats kept indoors on five farms in the netherlands. the goats were individually sampled. coccidial oocysts were identified and nematode eggs counted. larval cultures were made and infective larvae identified to the generic or species level. the goats were divided into three groups according to their age: kids, those weaned but not served, and older goats. oocysts were found in 26 out of 27 kids (96.3%), in 52 out of 55 wea ... | 1996 | 8720569 |
| [epidemiology of gastrointestinal nematodes in small ruminants in the plateau areas in togo]. | post-mortem helminthological examinations were performed in togo on small ruminants of the djallonké breed (59 sheep, 60 goats), revealing the presence of eight gastrointestinal nematode species which were, in decreasing prevalence order, trichostrongylus sp. (t. axei and t. colubriformis) (99%), haemonchus contortus (82%), strongyloides papillosus (67%), cooperia curticei (43%), oesophagostomum columbianum (40%), gaigeria pachyscelis (36%) and trichuris ovis (4%). the average worm burden was 1, ... | 1995 | 8734228 |
| a pilot trial on the experimental infection of springbok (antidorcas marsupialis) and eland (taurotragus oryx) with a goat strain of strongyloides papillosus. | | 1996 | 8765065 |
| larval somatic antigens effective in inducing an igg response and protection against strongyloides papillosus infection. | a serum igg response to strongyloides papillosus infection was analysed in rabbits. igg production was induced against 30-200 kda larval somatic antigens and 21-160 kda adult excretory/secretory (es) antigens at 4 weeks postinfection. no immunoreactivity was detected between sera of infected animals and any proteins of larval es and adult somatic antigens. protection against larval challenge infection was investigated in rabbits immunized by primary infection and by intradermal inoculations of l ... | 1996 | 8960219 |
| prevalence and seasonal changes in the gastro-intestinal helminths of nigerian goats. | a total of 120 gastro-intestinal tracts and 960 faecal samples were examined to assess the prevalence and seasonal changes in the gastro-intestinal helminth parasites of red sokoto (maradi) goats slaughtered at ibadan between may 1991 and april 1992. egg types of strongyles, strongyloides, trichuris, skrjabinema, dicrocoelium and moniezia were encountered in 93%, 83%, 44%, 0.9%, 2.3% and 31% of the faecal samples respectively. however, only strongyle, strongyloides and trichuris eggs occurred in ... | 1996 | 8960229 |
| parasites of south african wildlife. xiv. helminths of nyalas (tragelaphus angasii) in the mkuzi game reserve, kwazulu-natal. | the helminthis of 58 nyalas (tragelaphus angasil) culled in the mkuzi game reserve, kwazulu-natal, during march 1991, and six culled during march 1994, were collected, identified and counted. of these, an as yet undescribed camelostrongylus sp., cooperia hungl. an onchocerca sp., strongyloides papillosus and moniezia benedeni are new parasite records. the individual nematode burdens of the antelope examined during march 1991 varied from one to 2327, and the total mean adult gastro-intestinal-nem ... | 1996 | 9173357 |
| [occurrence of helminths in slaughtered sheep in upper bavaria. 2. relationship between fecal egg count and worm burden]. | the relationship between the faecal egg count and the worm burden of the gastrointestinal tract of sheep was examined. close relationships were found in strongyles, trichostrongylidae (other than nematodirus spp.), nematodirus spp., strongyloides papillosus, chabertiidae and trichuris spp.. due to high percentage of false negative diagnosis from faecal examination, this relationship was in nematodirus spp. and trichuris spp. not as close as in the other nematodes. however, the results support th ... | 1997 | 9182515 |
| efficacy of an ivermectin controlled-release capsule against nematode and arthropod endoparasites in sheep. | five controlled trials were conducted in germany or in the united kingdom, using 74 female sheep of merino or dorset horn breeds, to evaluate the efficacy of an ivermectin controlled-release capsule against naturally acquired or induced infections of gastrointestinal nematodes, lungworms and nasal bot larvae and against incoming infections with gastrointestinal and pulmonary nematodes. half of the animals were treated with one ivermectin controlled-release capsule that delivered ivermectin at th ... | 1998 | 9571756 |
| preliminary study of nematode infections of cattle in the six provinces of thailand in the dry season. | fecal nematode egg counts and serum pepsinogen concentrations of cattle were determined in six provinces of the northern (chiangrai and lampang), north-eastern (khonkaen, mahasarakham and nakhonratchasima) and eastern (chonburi) parts of thailand in the dry season. nematode eggs were detected in 82% of animals examined. serum pepsinogen concentrations ranged from 78 to 2,951 (mean 934) mu tyrosine. animals in chonburi province had higher mean values for both egg counts and serum pepsinogen conce ... | 1998 | 9592730 |
| recovery from arrhythmias in lambs infected with strongyloides papillosus following worm elimination. | calves and lambs heavily infected with strongyloides papillosus develop cardiac arrest by ventricular fibrillation which is preceded by continuous sinus tachycardia and prolongation of the pq interval during the patent infection. in the present study, cardiac rhythms following anthelmintic treatment were investigated in lambs infected with s. papillosus to ascertain whether cardiac disorders due to the infection are based on a reversible and curable change. eight lambs were given a lethal dose o ... | 1998 | 9639900 |
| the control of the free-living stages of strongyloides papillosus by the nematophagous fungus, arthrobotrys oligospora. | two laboratory trials were conducted to determine the effect of the addition of spores (conidia) of the nematophagous fungus, arthrobotrys oligospora, on the development of the ruminant parasite, strongyloides papillosus, in cultures of bovine faeces. both studies showed that at a concentration of 2000 conidia/g faeces virtually eliminated infective larvae (> 99% reduction), following 14 days incubation under ideal conditions (25 degrees c and saturated humidity) for free-living development of t ... | 1998 | 9650868 |
| comparison of the trapping ability of arthrobotrys robusta and monacrosporium gephyropagum on infective larvae of strongyloides papillosus. | in an in vitro trial, the trapping ability of arthrobotrys robusta and monacrosporium gephyropagum against strongyloides papillosus infective larvae on corn meal agar plates, was evaluated after seven days of interaction at 25 degrees c. monacrosporium gephyropagum trapped 93.1% of the larvae whereas a. robusta trapped only 32.3%. variability in the capture of s. papillosus infective larvae by both trapping fungi is discussed. | 1998 | 9765371 |
| an abattoir survey of gastrointestinal nematode infections in cattle in the central highlands of kenya. | the gastrointestinal tracts of 672 crossbred cattle were obtained from various abattoirs in kiambu district, kenya from august 1992 to july 1993, and examined for the presence of gastrointestinal nematodes. eight nematode species were found in 583 (86.8%) of the animals. the nematodes were, in order of prevalence: haemonchus placei (67.0%), cooperia pectinata (53.0%), cooperia punctata (41.7%), oesophagostomum radiatum (38.4%), trichostronglyus axei (24.3%), nematodirus helvetianus (19.6%), tric ... | 1998 | 9778778 |
| a case control study of potential enteric pathogens for calves raised in cow-calf herds. | a matched case control study was performed to describe the epidemiological features of potential enteric pathogens for calves reared in 53 cow-calf herds located in western switzerland. a total of 106 diarrhoeic calves and 126 healthy control calves were collected, all calves were less than 4 months old. faecal samples were analysed for presence of infectious agents related to calf diarrhoea including enterotoxigenic e. coli, verotoxin producing e. coli (vtec), campylobacter sp., yersinia sp., s ... | 1998 | 9852767 |
| efficacy of topically administered doramectin against eyeworms, lungworms, and gastrointestinal nematodes of cattle. | to evaluate efficacy of topically administered doramectin against eyeworms, lungworms, and gastrointestinal nematodes of cattle. | 1999 | 10376888 |
| [prevalence and importance of endoparasites in calves raised in swiss cow-calf farms]. | a longitudinal study was performed to establish estimates of prevalence of selected endoparasites in swiss cow-calf operations and to investigate the importance of an infection with endoparasites on diarrhea and weight gain until weaning. three hundred and eighty-six calves raised in 67 larger cow-calf herds were included in the study. faecal samples were collected during the first three months of life and at weaning. parasitological analyses were performed according to standard procedures inclu ... | 1999 | 10481370 |
| experimental studies with stronglyloides papillosus in goats. | unusual clinical and pathological observations in the field in goats and sheep suffering from strongyloides papillosus infection prompted experimental work on this parasite. goats were infected percutaneously with either single or multiple, low or high levels of s. papillosus. young goats up to 12 months of age were found to be the most susceptible. some animals, however, showed substantial resistance to infective doses. clinical signs included transient diarrhoea, misshapen, elongated faecal pe ... | 1999 | 10631709 |
| hypolipemia associated with the wasting condition of rabbits infected with strongyloides papillosus. | rabbits develop a wasting condition in the intestinal stage of strongyloides papillosus infection. serum inflammatory cytokine and lipid profiles were investigated in five rabbits infected with s. papillosus and five uninfected pair-fed controls to ascertain whether the disease is inflammatory cytokine-mediated cachexia. tumor necrosis factor alpha (tnf alpha) was detected in one infected animal at day 7 after infection. interleukin (il)-1 was detected in three infected, and one control, animals ... | 2000 | 10681033 |
| efficacy of an ivermectin controlled-release capsule against some rarer nematode parasites of sheep. | a controlled trial was conducted to evaluate the efficacy of the intraruminal ivermectin controlled-release capsule (crc) (ivomec maximizer cr capsule for sheep, merial ltd.) against induced incoming third-stage larvae and established adult infections with some rarer gastrointestinal nematode parasites of sheep. twenty-one worm-free lambs were allocated by restricted randomisation based on body weight within sex to one of the following treatments: unmedicated control, ivermectin crc given on day ... | 2000 | 10714467 |
| epidemiological studies on gastrointestinal helminths of dromedary (camelus dromedarius) in semi-arid lands of eastern ethiopia. | a total of 752 dromedaries were examined and 75% were found to be harbouring nematode eggs. the mean epg was 1831 and the range was from 100 to 21,200. the prevalence rates in the four-age groups examined were 59.6% (3-7 years), 72.4% (8-12 years), 76.1% (13-17 years) and 83.9% (18-22 years). the prevalence rate for females and males were 77.6 and 64.8%, respectively and for long dry, short rainy, short dry and long rainy seasons were 66, 80, 69 and 82.6%, respectively. the mean epg of faeces wa ... | 2002 | 11900928 |
| effects of recombinant bovine interferon gamma on strongyloides papillosus infection in calves. | the effects of interferon (ifn) gamma on the course of infection with strongyloides papillosus in calves were investigated. calves (n = 7 each) were inoculated with recombinant bovine ifny or control solution daily from day 0 to day 15 following s. papillosus infection. treatment with ifn-gamma induced an increase in faecal egg output in the peak stage of infection. the ifngamma-treated animals harboured more worms, especially more immature worms, in the small intestine than control animals at n ... | 2002 | 12018197 |
| dose confirmation studies of moxidectin 1% non-aqueous injectable and moxidectin 0.5% pour-on formulations against experimentally induced infections of larval and adult stage oesophagostomum radiatum and trichuris discolor in cattle. | separate controlled trials were conducted to evaluate the efficacy of two formulations of moxidectin (1% non-aqueous injectable solution and 0.5% pour-on (cydectin) against larval or adult stages of oesophagostomum radiatum and trichuris discolor infecting cattle. fifty-three strongylate-free dairy breed steer calves were obtained from commercial sources. after a brief acclimation period, calves were randomly divided into two pools to evaluate the efficacy of the moxidectin formulations against ... | 2002 | 12191901 |
| epidemiological studies on gastrointestinal parasitic infections of lambs in the coastal savanna regions of ghana. | the types of gastrointestinal parasites (eimeria and helminths) encountered by 70 lambs and the seasonal pattern of both eimeria and strongylate infections in these lambs in the derived coastal savanna were followed for three years. eimeria oocysts and helminth eggs were detected in the faeces of lambs at the same time, indicating the concurrence of both eimeria and helminth infections. eimeria oocysts were first seen in the lambs 20 days after birth (dab) and the level of oocyst output increase ... | 2003 | 12797410 |
| experimental infection of calves with strongyloides papillosus (nematoda). | | 1954 | 13171504 |
| oxygen requirements of strongyloides papillosus infective larvae. | | 1958 | 13537941 |