| vascular permeability increasing action of the saline extract of dictyocaulus filaria--a preliminary report. | the cutaneous hypersensitivity reaction in sheep infected with dictyocaulus filaria was investigated. the saline extract of the worms increased the cutaneous capillary permeability in both the infected and uninfected control animals. similar increase in the permeability was also observed in uninfected healthy rabbits. the results suggest that the vascular permeability increasing action of the worm extract is, partly, due to histamine release. | 1978 | 82536 |
| [dictyocaulus filaria (rudolphi, 1809) infections in rats]. | | 1975 | 124509 |
| the bionomics of the free-living larvae and the transmission of dictyocaulus filaria between lambs in north-east england. | the bionomics of the free-living larvae of dictyocaulus filaria on pasture, and the transmission of infection between lambs, were studied during different seasons of the year in north-east england. the rate of development of first-stage larvae to the third stage took 4-9 days in late spring and summer, 1 1/2-4 weeks in autumn and 5 1/2-7 weeks in winter. the proportion of first-stage larvae developing to the third stage ranged from 10-28% in autumn and winter, and 2-25% in spring and summer. the ... | 1976 | 135016 |
| efficacy of albendazole against haemonchus, nematodirus, dictyocaulus, and monieza of sheep. | albendazole was highly efficacious in the removal of monospecific and mixed infection of haemonchus contortus, nematodirus spathiger, and dictyocaulus filaria from sheep. a dose level of 5 mg/kg removed nearly all gastrointestinal nematodes, and 10 mg/kg removed all lungworms. tapeworms of the genus moniezia were completely removed by a dose level of 10 hg/kg. | 1976 | 136914 |
| the epidemiology of dictyocaulus filaria in north east england. | the seasonal pattern of dictyocaulus filaria infection in four flocks of sheep under field conditions was studied by faecal examination for larvae. the prevalence of infection in lambs was low in spring and summer but increased in late autumn or winter, then fell again to a low level by may. however, most lambs became infected at some time during their first year of life. in ewes the prevalence of infection was generally low, but rose during winter and spring. seasonal pattern and intensity of i ... | 1977 | 140454 |
| [vaccination of lambs against invasion by dictyocaulus filaria larvae]. | | 1977 | 143748 |
| [sheep immunity to dictyocaulus filaria caused by invasion of specific and nonspecific nematoda]. | | 1977 | 145096 |
| studies on the epidemiology of dictyocaulus filaria infection in blackface sheep on a low-ground scottish farm. | the excretion of dictyocaulus filaria larvae in the faeces of blackface sheep on a heavily stocked lowland farm in south east scotland, showed considerable individual, week to week and year to year variation. patent infections were first observed in lambs in may or june but the heaviest and most prevalent infections occurred in the autumn. infection levels were generally low but infections tended to be prolonged and reinfection occurred following anthelmintic treatment until the late autumn or w ... | 1977 | 146903 |
| the relative susceptibility of soay and blackface sheep to natural infection with dictyocaulus filaria. | simultaneous studies by faecal larval counts on a mixed flock of blackface and soay ewes, yearlings and lambs suggested that the soay animals were less able to develop resistance to dictyocaulus filaria. this susceptibility resulted in a greater proportion of the soay ewes developing heavy burdens of these lung worms, and in a greater proportion of the yearlings and ewes excreting d filaria larvae in their faeces. | 1977 | 146904 |
| the efficacy of in-feed medication with fenbendazole against gastrointestinal nematodes of sheep, with particular reference to inhibited larvae. | anthelmintic activity of fenbendazole in a feed formulation was tested against nematode parasites of sheep. dose rates ranging from 1.4 mg per kg for four days to 0.4 mg per kg for 14 days removed 98 to 100 per cent of the total gastrointestinal worm burden, including large numbers of inhibited fourth stage larvae of ostertagia circumcincta. one hundred per cent effectiveness against adult dictyocaulus filaria was also recorded. | 1978 | 149411 |
| the response of suffolk lambs to an escalating experimental infection with dictyocaulus filaria. | infection of suffolk lambs with dictyocaulus filaria larvae beginning at two months of age with one larva per day, six days per week, and doubling every four weeks to reach a final infection rate of 64 larvae per day gave rise to a pattern of larval excretion in the faeces which approximated to that seen in naturally infected suffolk lambs in midlothian in 1974. several of the lambs were still infected with adult d filaria and were excreting larvae in their faeces 28 weeks after the infection be ... | 1978 | 152961 |
| efficacy of oxfendazole against natural infestations of nematodes and cestodes in sheep in egypt. | oxfendazole liquid suspension (systamex; wellcome) was administered orally at the dose of 4.5 mg per kg to 800 indigenous egyptian sheep clinically affected with dictyocaulus filaria, moniezia expansa, haemonchus contortus, ostertagia circumcincta, nematodirus spp, trichostrongylus axei, cooperia curticei, trichuris ovis and oesophagostomum spp. a 100 per cent clearance was recorded for all parasites with the exception of t ovis which were markedly reduced in number. | 1979 | 157586 |
| effect of anthelmintic treatment on the performance of awassi sheep in iraq. | studies are reported on the effect of anthelmintic treatment on the body weight gain and wool growth of ewes with subclinical helminth infections. the parasites involved were fasciola gigantica and ostertagia spp., together with some haemonchus contortus, trichostrongylus spp., and dictyocaulus filaria. in 1 group, 5 sheep, which were treated twice with tetramisole at an interval of 4 weeks to remove gastro-intestinal nematodes and lungworms, showed an increase of 41% in weight gain and 3.2% in ... | 1979 | 552676 |
| 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 |
| [effect of fenbendazole (panacur) in sheep naturally invaded by gastrointestinal and lung nemtaodes]. | the paper presents the results of the clinical tests of fenbendazole (panacur, produced by hoechst, f. r. g.), a new antihelminthic preparation. the tests were performed in sheep naturally invaded by gastrointestinal and lung nematodes. helminthological dissection performed 7 days after the application of 5 mg of fenbendazole per 1 kg of sheep weight proved 100% effectiveness on lungworms (dictyocaulus filaria) and on the following gastrointestinal helminths: ostertagia ostertagi, haemonchus con ... | 1975 | 812246 |
| nematodes parasitizing domestic ruminants in afghanistan. | a total of 12 nematode species were determined in the collection recovered from domestic ruminants in afghanistan. ten of them were found for the first time in this region: trichocephalus globulosus, trichostrongylus probolurus, cooperia bisonis, nematodirus spathiger, n. abnormalis, thelazia rhodesi, bunostomum phlebotomum, haemonchus contortus, dictyocaulus filaria and oesophagostomum radiatum. morphological and metrical characteristics of t. globulosus, t. skrjabini and c. bisonis, based on o ... | 1976 | 1034588 |
| the anthelmintic efficacy of fenbendazole against a mixed nematode infection in sheep. | fenbendazole (methyl-5-(phenylthio)-2-benzimidazole carbamate) at dose rates of 5 mg/kg and above was 100 per cent effective in eliminating a naturally acquired dictyocaulus filaria infection in sheep. the drug was 100 per cent effective in eliminating concurrent infections of adult trichostrongylus axei, haemonchus contortus, haemonchus placei, ostertagia circumcincta, ostertagia ostertagii, cooperia oncophora, cooperia mcmasterii, nematodirus spathiger, neumatodirus filcollis, oesophagostomum ... | 1975 | 1153893 |
| [comparative study of various antigens of d. filaria by disc electrophoresis]. | somatic and functional antigens of dictyocaulus filaria were comparatively studied by means of disk electrophoresis. established were the protein fractions of the different antigens. the preliminary fractionation of the antigens on sephadex g-200 made it possible (at a second concentration and separation through disk electrophoresis) to obtain fewer, but richer and better distinguishable fractions each one of which could be used alone as a specific antigen. the complement-fixation test, the indi ... | 1975 | 1210002 |
| [diffusion of pulmonary nematoda in the steinbock (capra ibex) and the chamois (rupicapra rupicapra) at the gran paradiso national park and the di valdieri reservation]. | the results obtained in a survey on the diffusion of pulmonary nematodes in 13 steinbocks (capra ibex) and 71 chamois (rupicapra rupicapra) of the parco nazionale del gran paradiso, and 49 chamois of the riserva di valdieri, italian western alps, are reported. the following species of nematodes were identified: spiculocaulus austriacus, protostrongylus rufescens, protostrongylus hobmaieri in steinbocks; protostrongylus rupicaprae, protostrongylus hobmaieri, protostrongylus refescens,protostrongy ... | 1975 | 1233401 |
| [development period of dictyocaulus filaria (rudolphi, 1809) in sheep]. | | 1976 | 1266258 |
| causes of lamb morbidity and mortality in the ethiopian highlands. | a study was conducted to investigate causes of lamb morbidity and mortality on farms and on-station at debre berhan during 1989 and 1990. it showed pneumonia (bacterial and/or verminous), starvation-mismothering exposure (sme) complex, gastrointestinal parasites, enteritis, abomasal impaction and physical injuries to be important health constraints on productivity. neonatal mortalities were 51.5% and 46.3% on farms and on-station respectively and occurred owing to management problems such as sme ... | 1992 | 1295202 |
| effect of genetic type, lactation and management on helminth infection of ewes in an intensive grazing system on irrigated pasture. | a survey of helminth infection was conducted in a flock of 290 ewes distributed into romanov (r), merinos d'arles (m) and romanov x merinos (r x m) genetic types, grazing irrigated pasture in the south of france. faecal egg and larval counts were done seven times per year from 1981 to 1984 on homogeneous groups of ewes and then individually once to four times every autumn from 1985 to 1988. helminth fauna was diverse and more abundant during autumn. high levels of strongyle infection occurred in ... | 1992 | 1459785 |
| epidemiology of nematode infections of soay sheep (ovis aries l.) on st kilda. | the epidemiology of nematode infections of soay sheep on the island of st kilda over a period of 2 years (august 1988-august 1990) spanning a host population crash is described. infective larvae (l3) levels on pasture were high (2422 +/- 365 l3/kg d.m. grass in midsummer 1988) when host population density was high, decreasing after the sheep population declined by 70% in early 1989 (601 +/- 14 l3/kg d.m. in midsummer 1989). the availability of infective larvae to sheep increased during the winte ... | 1992 | 1461687 |
| use of sentinel lambs for early monitoring of the south powys hydatidosis control scheme: prevalence of echinococcus granulosus and some other helminths. | sentinel lambs were used to identify young echinococcus granulosus infections in sheep, to provide an early indication of the progress of the south powys hydatidosis control scheme. four sentinel lambs were purchased on each of 60 farms, from inside and outside the control area; they were examined when approximately six, 10 and 15 months of age. gross examination, thin slicing of organs and histological examination of the lesions in the viscera revealed no e granulosus hydatid cysts in lambs bor ... | 1991 | 1833872 |
| effect of bronchodilator and intravascular oxygen releaser on the course of dictyocaulus filaria infection in lambs. | the effect of a bronchodilator (or ciprenaline sulphate) and intravascular oxygen releaser (sodium dihydrogen orthophosphate) on the host in experimental dictyocaulus filaria infection was studied. fifteen male lambs of dorset-muzaffarnagri breed, aged 4-6 months, were divided into four groups of four (infected bronchodilator), four (infected i.v. o2 releaser), four (infected untreated controls) and three (uninfected controls). the administration of i.v. o2 releaser helped in increasing the leng ... | 1990 | 2140475 |
| cryopreservation of some common nematodes of ruminants for up to 11,3 years. | infective larvae of selected batched of the following nematode species from sheep and cattle were examined for survival and infectivity (by injection into either the abomasum, the duodenum, or the jugular vein) after having been stored in liquid nitrogen for 103-136 months: haemonchus contortus, haemonchus placei, ostertagia circumcincta, ostertagia ostertagi, marshallagia marshalli, cooperia spp., trichostrongylus axei, trichostrongylus colubriformis, trichostrongylus falculatus, nematodirus sp ... | 1990 | 2338992 |
| chromosome c-banding techniques in dictyocaulus filaria (rudolphi, 1809) railliet and henry, 1907. | c-banding has been performed on dictyocaulus filaria using both original and modified techniques. the karyotype is reported based on c band observations. the existence of large heterochromatic blocks appears to be the cause of the low chiasmata frequency. | 1990 | 2387973 |
| baermannization of dictyocaulus spp. from faeces of cattle, sheep and donkeys. | faeces were collected per rectum from calves infected with dictyocaulus viviparus (d.v.), from lambs infected with dictyocaulus filaria (d.f.) and donkeys infected with dictyocaulus arnfieldi (d.a.). in one experiment, the influence of storage temperature before baermannization was investigated. recovery rate for d.v. was approximately 80% after 24 h at 4 degrees c or 16 degrees c but only 40% at 20 degrees c. after two days at 20 degrees c the rate had fallen to 20%. recovery rates for d.f. dec ... | 1989 | 2523174 |
| effect of dictyocaulus filaria infection on the osmotic fragility of sheep erythrocytes. | the osmotic fragility of erythrocytes in lambs experimentally infected with dictyocaulus filaria was studied weekly for 71 weeks. in acute infection, the erythrocytic fragility increased from the third week of infection onwards, reached its peak by the eleventh week and declined thereafter. however, in the chronic immune-carrier stage, this increase in the fragility did not return to normal until the end of the experiment. this enhanced fragility showed a positive correlation with the faecal lar ... | 1989 | 2523175 |
| experimental studies on anaemia in sheep infected with dictyocaulus filaria. | the pathogenesis of dictyocaulus filaria induced anaemia was experimentally investigated. nineteen dorset-muzaffarnagri male lambs were divided into two groups of 13 and six. the lambs in the former group received a primary infection dose of 2000 d. filaria infective larvae, whereas animals in the latter group were kept as uninfected controls. the haematological alterations and faecal larval output were monitored weekly until day 220 post-infection. the infection caused an increase in erythrocyt ... | 1989 | 2527210 |
| osmotic fragility of sheep erythrocytes and alterations in their membrane constituents in dictyocaulus filaria infection. | alterations in the sheep erythrocyte membrane constituents during the course of dictyocaulus filaria infection were studied in 4-6 month old nali lambs. during the acute course of infection, plasma cholesterol, membrane cholesterol, cholesterol: phospholipid ratio and acetylcholinesterase activity fell significantly when compared with uninfected controls. the onset of the fall in the values of these parameters was observed 1-2 weeks prior to an increase in the osmotic fragility of erythrocytes. ... | 1989 | 2534532 |
| availability of infective larvae of parasitic nematodes of sheep grazing on kikuyu (pennisetum clandestinum) pastures in the winter rainfall area. | thirteen groups of 4 south african mutton merinos grazed for 4 weeks with the flock on kikuyu pastures and were slaughtered for total and differential worm counts at necropsy. subsequently 12 groups of 8 week tracers grazed on the pastures and were killed for worm counts post mortem. the following were present in most sheep: teladorsagia (syn. ostertagia) circumcincta, trichostrongylus axei, trichostrongylus colubriformis, dictyocaulus filaria and oesophagostomum venulosum. haemonchus contortus, ... | 1989 | 2626260 |
| serum lactate dehydrogenase: clinical significance of alterations in its activity in lambs infected with dictyocaulus filaria. | alterations in the serum lactate dehydrogenase activity of dictyocaulus filaria infected lambs were studied. the significant increase in its activity during patency correlated well with the progress of the disease and lung damage caused by the parasite. the enzyme may be of use in assessing the potency of d filaria vaccine and the chemotherapeutic value of an anthelmintic. its use as a non-invasive method for earlier diagnosis and prognosis of the disease under experimental conditions is suggest ... | 1987 | 2950578 |
| preliminary observations on the effect of dictyocaulus filaria on the blood clotting time of sheep. | the whole blood clotting time progressively increased from the second to the eighth week in lambs receiving a primary infection of dictyocaulus filaria larvae. however, in vaccinated lambs it remained unaffected. levamisole hydrochloride was ineffective when given 4 days after infection but restored the blood clotting time to near normal soon after treatment when it was given 30 days after infection. | 1988 | 2973175 |
| 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 |
| [fecal surveys in pastured sheep and the occurrence of cysticercus tenuicollis in slaughtered sheep]. | out of 4 fenced pastures, 2 stationary flocks and 3 wandering flocks with approx. 2,000 mother sheep, 962 samples of faeces were checked for the occurrence of gastro-intestinal nematodes and lungworms. irrespective of the way the sheep are kept, an infestation incidence of 11.1 to 100% with gastro-intestinal nematodes was found. in one flock even after two treatments 66.7% were still infected; therefore, suspect methods of treatment have to be avoided and a constant change of anthelmintics is ab ... | 1988 | 2977532 |
| epidemiology of ovine helminthiasis in haryana, india. | tracer lambs were used to study the pasture contamination with infective stages of helminth parasites during one annual cycle in a subtropical climate. post-mortem worm counts indicated that low infections with haemonchus contortus occurred throughout the year except in june. however, twenty five or more h. contortus per lamb were recorded in january, april, may and august. trichostrongylus colubriformis infection was detected throughout the year and 150 or more worms per lamb were recorded duri ... | 1988 | 3354055 |
| parasites in sheep grazing on kikuyu (pennisetum clandestinum) pastures in the winter rainfall region. | regular worm counts were done post-mortem on sheep that had grazed on kikuyu pastures at the elsenburg research station near stellenbosch, a winter rainfall region. major species were trichostrongylus colubriformis, trichostrongylus axei, while ostertagia circumcincta was usually present in large numbers. minor species were haemonchus contortus, nematodirus spathiger, dictyocaulus filaria, oesophagostomum venulosum, trichuris spp., chabertia ovina and larvae of the arthropod oestrus ovis. muelle ... | 1987 | 3587925 |
| cytogenetics of dictyocaulus arnfieldi (cobbod, 1884) railliet and henry, 1907. | a cytogenetic study of dictyocaulus arnfieldi was made for the first time. the diploid chromosome number was 2n = 11 for males and 2n = 12 for females; there was an xo/xx sex determinism mechanism. diplotene stage showed bivalents with 3, 2 or 1 chiasmata. the possible differences in the evolution of d. arnfieldi and dictyocaulus filaria are discussed. | 1986 | 3806322 |
| the spermatogenesis of dictyocaulus filaria (nematoda, trichostrongyloidea). | a cytological study was carried out, using male dictyocaulus filaria, that revealed the diploid number of chromosomes was 2n = 11 and the sex determining mechanism was xo. the behaviour of the chromosomes in the different stages of meiosis was also investigated. cross, open ring and rod bivalents were observed in diakinesis. the chromosomes appeared to be acrocentric since they acquired a radial disposition in metaphase-ii. the chiasma frequency was 1 and the nucleolus-organizing region was loca ... | 1985 | 4032152 |
| [vaccination against "dictyocaulus filaria" in sheep with oral administration of 3rd stage larvae irradiated with co60. experimental studies with 45-day-old lambs]. | | 1968 | 4236917 |
| efficacy of levo-tetramisole against experimental dictyocaulus filaria infections in lambs. | | 1969 | 4240948 |
| [microflora of dictyocaulus filaria in dictyocauliasis of sheep]. | | 1970 | 4245868 |
| the strength and duration of immunity to dictyocaulus filaria infection in sheep and goats. | | 1970 | 4251259 |
| [parasitism reservoir of dictyocaulus filaria]. | | 1970 | 4251594 |
| radioactive antibody studies on dictyocaulus filaria infection. | | 1971 | 4252545 |
| [the effect of nilverm on preimaginal forms of dictyocaulus filaria]. | | 1971 | 4261550 |
| a comparison between the efficacy of tetramisole and morantel/diethylcarbamazine in experimentally induced dictyocaulus filaria infection in goats. | | 1972 | 4265257 |
| studies on the cell adherence reaction with dictyocaulus filaria larvae. | | 1973 | 4269750 |
| the anthelmintic activity of levamisole against larval and adult stages of lamb lungworm (dictyocaulus filaria). | | 1973 | 4270337 |
| anthelmintic efficiency of levamisole against lungworm (dictyocaulus filaria) in lambs. | | 1973 | 4271472 |
| studies on the incidence of dictyocaulus filaria in sheep of rimouski region. | | 1973 | 4272256 |
| controlled trials with morantel tartrate plus diethylcarbamazine given to lambs infected experimentally with haemonchus contortus, ostertagia circumcincta, nematodirus battus, trichostrongylus colubriformis and dictyocaulus filaria. | | 1973 | 4272498 |
| studies on dictyocaulus filaria. i. modifications of laboratory procedures. | | 1971 | 4277675 |
| studies on dictyocaulus filaria. ii. migration of the developmental stages in lambs. | | 1971 | 4277676 |
| studies on dictyocaulus filaria. iv. the morphogenesis of the parasitic stages in lambs. | | 1971 | 4277677 |
| studies on dictyocaulus filaria. 3. the migration of the immature stages applied to an anthelmintic test. | | 1971 | 4277678 |
| further studies on the efficacy of irradiated vaccine in the control of dictyocaulus filaria in iraq. | | 1973 | 4279426 |
| seasonal fluctuation and inhibited development of populations of dictyocaulus filaria in ewes and lambs. | the fluctuation of populations of dictyocaulus filaria in sheep was studied under field conditions in which animals are housed during the winter and grazed from late spring to autumn. a comparison was made between residual pasture contamination with overwintered larvae, the fecal larval deposition by ewes from june and both of these factors combined as sources of infection for spring born lambs. ewes and lambs were killed serially over a year and worms were recovered from the lungs and counted. ... | 1974 | 4279764 |
| the efficacy of thiabendazole against immature and adult dictyocaulus filaria in sheep. | | 1972 | 4281446 |
| [development of dictyocaulus filaria larvae]. | | 1972 | 4666215 |
| cross resistance to dictyocaulus viviparus produced by dictyocaulus filaria infections in calves. | | 1967 | 4961871 |
| [susceptibility of ruminants to dictyocaulus viviparus and dictyocaulus filaria (strongyloidea, nematoda)]. | | 1969 | 5351203 |
| the ultrastructure of the intestinal wall of dictyocaulus filaria (nematoda). | | 1970 | 5425521 |
| the ultrastructure of muscle of dictyocaulus filaria and eudorylaimus obtusicaudatus (nematoda). | | 1970 | 5436878 |
| the ultrastructure of microvilli in dictyocaulus filaria and müllerius capillaris from the aspect of their ecology. | | 1969 | 5792262 |
| the effect of dictyocaulus filaria on the resistance of guinea-pigs to dictyocaulus viviparus. | | 1967 | 6030909 |
| immunization with irradiated larvae against dictyocaulus filaria in young lambs. | in the lungworm-endemic areas of kashmir, 6-10 week old lambs of karnah and kashmir merino breeds were vaccinated with two doses of 50 kr gamma-irradiated larvae of dictyocaulus filaria, given a month apart. assessed on the basis of reduced prevalence and significantly lower faecal larval output over an eight-month observation period, vaccinated lambs showed a high degree of resistance to naturally acquired d. filaria infection. the results also show that vaccination against d. filaria provided ... | 1981 | 6211819 |
| inoculation with dictyocaulus filaria larvae for the protection of cattle from dictyocaulus viviparus infection. | | 1982 | 6222213 |
| the efficacy of fenbendazole at a dosage rate of 5 mg/kg against the third and fourth stage larvae of dictyocaulus filaria in sheep. | fenbendazole, dosed to experimentally infested sheep at 5 mg/kg live mass, against immature dictyocaulus filaria, was more than 80% effective in more than 80% of the animals. | 1983 | 6226794 |
| effect of anthelmintic treatment on the development of resistance in sheep vaccinated or experimentally infected with dictyocaulus filaria. | this investigation was undertaken to study the immune response of iraqi sheep vaccinated with dictyocaulus filaria larvae (filiraq) and to determine the effect of tetramisole on the development of resistance to reinfection. the findings confirm the effectiveness of filiraq in conferring protection against experimental infection with d filaria. however, the administration of anthelmintic four weeks after each vaccination interfered with the development of immunity. termination of d filaria infect ... | 1984 | 6232668 |
| use of the enzyme-linked immunosorbent assay in the diagnosis of dictyocaulus filaria infection. | the enzyme-linked immunosorbent assay (elisa) was used to detect and quantify antibodies to whole worm extract antigens of dictyocaulus filaria. the results provided evidence that the test was highly sensitive and could be used as a tool for epidemiological studies. no cross reactions were observed with sera from lambs infected with the hookworm gaigeria pachyscelis. | 1984 | 6239341 |
| [lungworms in sheep in hesse: incidence of dictyocaulus filaria and protostrongylids as well as seasonal dynamics of larval excretion under various management systems]. | | 1984 | 6240259 |
| 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 |
| efficacy of ivermectin against internal parasites of sheep. | ivermectin in an oral formulation was evaluated by the non-parametric method against a wide range of endoparasites of sheep in 15 trials involving a total of 297 sheep. ivermectin at 200 micrograms/kg was more than 80% effective in more than 80% of the treated animals (i.e. class a) against induced infestations of 3rd and 4th stage larvae and adults of chabertia ovina, dictyocaulus filaria, haemonchus contortus (including a benzimidazole-resistant strain), nematodirus spathiger, oesophagostomum ... | 1984 | 6549472 |
| 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 |
| nematoda: aerobic respiratory pathways of adult parasitic species. | aerobic respiratory pathways have been compared in adult parasitic nematodes, including trichostrongylus colubriformis, nippostrongylus brasiliensis, ostertagia ostertagi, cooperia oncophora, haemonchus contortus, oesophagostomum venulosum, chabertia ovina, dictyocaulus filaria, dictyocaulus viviparus, and ascaridia galli. respiration was measured in both whole worm or tissue homogenates and isolated mitochondrial fractions, and delineated into the mammalian type or alternative respiratory pathw ... | 1984 | 6692887 |
| 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 |
| efficacy of ivermectin against naturally acquired and experimentally induced nematode infections in sheep. | the activity of ivermectin against common nematode parasites of sheep was examined in 2 experiments. in the 1st experiment, 14 sheep with naturally acquired infections were assigned to 2 groups of 7 sheep each. sheep in 1 group were treated with 200 micrograms of ivermectin/kg of body weight and the remainder served as nontreated controls. in the 2nd experiment, 15 sheep with experimentally supplemented infections (including a benzimidazole-resistant strain of haemonchus contortus) were assigned ... | 1982 | 7041712 |
| survival and development of larvae of the common nematodes of ruminants after long-term cryopreservation and investigation of different routes of infestation. | exsheathed infective larvae (l3) of 16 species of nematodes were tested for infectivity in either sheep or cattle after they had been frozen and stored in 0,09% nacl solution in the gas phase of liquid nitrogen for periods of up to 59 months. a mean of greater than 90% of the l3 of haemonchus contortus, ostertagia circumcincta, trichostrongylus axei, trichostrongylus colubriformis, nematodirus spathiger, oesophagostomum columbianum and chabertia ovina of sheep and haemonchus placei, ostertagia o ... | 1980 | 7465164 |
| bile enhances the infectivity of third stage larvae of dictyocaulus filaria. | | 1994 | 7501372 |
| differential diagnosis of lung nematode parasites from livestock by electrophoretic techniques. | the protein profile, determined by sds-page, from different geographical strains (slovakia and spain) of dictyocaulus filaria and protostrongylus rufescens parasitizing capra hircus and ovis aries has been assayed. this protein profile has also been comparatively determined in d. viviparus isolated from lungs of bos taurus killed in slovakia, by sds-page. protein profiles of d. viviparus and both strains of d. filaria were very similar while in p. rufescens a quite different protein profile was ... | 1995 | 7622328 |
| the distribution of nematode egg counts and larval counts in grazing sheep and their implications for parasite control. | the frequency distribution of gastrointestinal nematode egg and lungworm larval counts was examined in 101 and 87 naturally infected ewes on two farms. the egg and larval outputs of the two flocks followed the negative binomial pattern of distribution (with k values below unity) at each time of sampling, which suggests highly overdispersed worm burdens. the results of the statistical analysis indicated that a relatively small part of the two flocks was responsible for the excretion of the majori ... | 1994 | 8021097 |
| parasitic bronchitis in goats and the possible use of dictyocaulus filaria vaccine for its control. | parasitic bronchitis is widely prevalent in migratory flocks of small ruminants in the northwest himalayan regions of india. the prevalence data collected from 5554 goats, maintained in 31 villages in different agroclimatic regions of the himalayas, showed that the prevalence of the disease in goats varied from 18.7 to 47.6% with an overall prevalence of 21.8%. interestingly, 27.6% of goats maintained at an altitude of 2700-3900 m above mean sea level in kargil (jammu and kashmir), where the cli ... | 1994 | 8171828 |
| 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 |
| gross and light-microscopic features of ovine pulmonary hydatidosis and verminous pneumonias in morocco. | verminous pneumonias appear to be common in sheep in morocco, therefore, a systematic study was undertaken to classify the pulmonary changes induced by various parasites in morocco. a total of 613 pairs of lungs with parasitic pneumonias were diagnosed in 1152 young and adult sheep either slaughtered at two abattoirs in morocco (487 out of 1152 sheep) or received at necropsy services (126 out of 1152 sheep) over a 15-month period. based on gross and microscopic findings, four types of pulmonary ... | 1995 | 8592907 |
| natural infection by gastrointestinal and bronchopulmonary nematodes in mouflons (ovis musimon) and their response to netobimin treatment. | gastrointestinal and bronchopulmonary nematode infections and the efficacy of netobimin (hapasil) were analyzed by way of fecal examination in 10 female mouflons (ovis musimon), in central spain, february 1993. before treatment all 10 mouflons had trichostrongylus axei, teladorsagia circumcincta and marshallagia spp.; sic had nematodirus spp., two had trichuris sp., one had capillaria sp., seven had bronchopulmonary dictyocaulus filaria and 10 mouflons had protostrongylid lungworms (muellerius c ... | 1996 | 8627934 |
| epidemiological aspects of lungworm infections of goats in morocco. | the results of a survey of lungworm infections in goats in the middle atlas and rabat areas in morocco during 1990-1992 are reported. five species were recorded: dictyocaulus filaria, protostrongylus rufescens, cystocaulus ocreatus, muellerius capillaris and neostrongylus linearis. the parasitological profile of protostrongylid species was represented by muellerius (69-78%), protostrongylus (16-25%) and cystocaulus (5-6%) in the rabat and middle atlas areas. neostrongylus was virtually non-exist ... | 1996 | 8750686 |
| [the interrelation of the phospholipid composition of the lungs in sheep and of the nematode dictyocaulus filaria]. | the effect of nematodes dictyocaulus (d) filaria on phospholipid (pl) composition in the homogenate of sheep lungs has been demonstrated. the comparative analysis has shown no differences in the content and composition of pl in the lungs of healthy sheep and in nematodes. infection of sheep by helminths was found to result in changes in the pl composition of sheep lungs. thus, it is possible to conclude that d. filaria affecting structural and functional systems of the host causes changes in its ... | 1996 | 9148621 |
| the epidemiology of nematode infections in sheep in a cool tropical environment. | the epidemiology of nematode infections in menz sheep was studied in the highlands of ethiopia at the international livestock research institute (ilri), debre berhan research station, using a series of tracer lambs grazing contaminated pasture for either 4, 16, 32 or 48 weeks from july 1992 to june 1994. the basic nematode seasonal infectivity pattern was expressed in terms of relative numbers of third-stage larvae (l3) available on pasture for different months. data from faecal nematode egg cou ... | 1997 | 9195717 |
| 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 |
| helminths and bot fly larvae of wild ungulates on a game ranch in central province, zambia. | helminths and bot fly larvae were collected from 11 wild ungulate species on a game ranch in the central province of zambia. new host-parasite records are: calicophoron sp. from defassa waterbuck kobus ellipsiprymnus defassa and kafue lechwe kobus leche kafuensis; avitellina centripunctata, gaigeria pachyscelis and gedoelstia cristata from tsessebe damaliscus lunatus lunatus; cooperia rotundispiculum from common reedbuck redunca arundinum; dictyocaulus filaria from greater kudu tragelaphus strep ... | 1998 | 9741058 |
| [endoparasitic infections in sheep from the swabian alb]. | the endoparasite fauna of 59 slaughtered sheep (30 lambs, 29 ewes) from the swabian alb, germany, was examined. one species of trematodes, 3 species of cestodes, 29 species of nematodes (23 species of gastro-intestinal and 6 species of lung nematodes), 1 species of arthropodes and 1 species of protozoa were recorded. all animals were infected with dicrocoelium dentriticum as well as gastro-intestinal and lung nematodes, 45.8% with moniezia spp., 15.3% with cysticercus tenuicollis, 55.9% with oes ... | 1998 | 9857565 |
| its2 sequences of dictyocaulus species from cattle, roe deer and moose in sweden: molecular evidence for a new species. | total dna was isolated from adult lungworms of the genus dictyocaulus, collected from cattle, moose (alces alces) and roe deer (capreolus capreolus) in sweden. the second ribosomal internal transcribed spacer was amplified with pcr, and dna sequences were determined from nine individual worms that all came from different hosts in order to avoid analysis of siblings. the sequence data obtained were aligned and compared with similar data derived from german lungworm isolates from cattle and fallow ... | 1999 | 10428637 |
| parenterally administered gastrointestinal nematode infective larvae viable after more than 15 years in liquid nitrogen. | after cryopreservation for 13.3-15.8 years, the viability of the infective larvae (l3) of trichostrongylus axei, t. colubriformis, oesophagostomum columbianum, haemonchus contortus, ostertagia circumcincta, t. falculatus, nematodirus spathiger, chabertia ovina and dictyocaulus filaria was assessed in sheep, by being deposited at their predilection sites. d. filaria was, however, an exception, in that the l3 were injected into the jugular vein. the mean development of all the species was 22.8%, b ... | 2000 | 10714461 |
| phylogeny of the trichostrongylina (nematoda) inferred from 28s rdna sequences. | we produced a molecular phylogeny of species within the order strongylida (bursate nematodes) using the d1 and d2 domains of 28s rdna, with 23 new sequences for each domain. a first analysis using caenorhabditis elegans as an outgroup produced a tree with low resolution in which three taxa (dictyocaulus filaria, dictyocaulus noerneri, and metastrongylus pudendotectus) showed highly divergent sequences. in a second analysis, these three species and c. elegans were removed and an ancylostomatina, ... | 2001 | 11399151 |
| [phospholipid and fatty acid content of the blood of sheep infected with the nematode dictyocaulus filaria]. | the results of analysis of phospholipids (pl) and fatty acid content in the blood of sheep infected with the nematodes dictyocaulus filaria are displayed. a significant increase of lysophosphatidylcholine and arachidonic acid as well as a decrease of docozagexaenic acid in pl of infected sheep have been recorded. that points out to structural and functional disorders of cellular membranes during the infection. these disorder could be used as a metabolic criterion to estimate the relationships wi ... | 2001 | 11871259 |
| efficacy of moxidectin 1% injectable and 0.2% oral drench against natural infection by dictyocaulus filaria in sheep. | two separate trials (i and ii) with 34 and 32 churra ewes, respectively, and distributed into two groups, have been carried out to evaluate the efficacy of two different formulations of moxidectin at a dose rate of 0.2mg/kg body weight (b.w.) against natural infection by dictyocaulus filaria in sheep. trial i was designed to evaluate a 1% moxidectin injectable formulation, whereas in trial ii a 0.2% moxidectin oral drench formulation was used. the efficacy was measured on the basis of the reduct ... | 2002 | 12072217 |
| efficacy of ivermectin delivered via a controlled-release capsule against small lungworms (protostrongylidae) in sheep. | to evaluate the efficacy of an ivermectin controlled-release capsule (crc), which delivers 1.6 mg ivermectin per day intraruminally for 100 days to sheep weighing 40-80 kg (ivomec maximizer cr capsule for adult sheep, merial), against small lungworms two studies with 48 naturally infected adult female merino landrace sheep were conducted. the sheep were allocated by restricted randomization based on bodyweight to untreated controls or received an ivermectin crc. eight sheep per group were necrop ... | 2002 | 12420864 |
| experimental infection of sheep and goats with the nematode lungworm, dictyocaulus filaria. | | 1952 | 12996775 |