Results 151 to 160 of about 10,897 (188)
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Detection of gastrointestinal nematodes by a coproantigen capture ELISA
Research in Veterinary Science, 1996An assay is described for the quantitative detection of excretory/secretory antigens liberated by the intestinal nematode Heligmosomoides polygyrus and voided in the host's faeces. A rabbit polyclonal antiserum to the antigens detected them in a dose-dependent manner and was sufficiently sensitive to recognise infection in mice carrying a mean worm ...
M J, Johnson, J M, Behnke, G C, Coles
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Controlling gastrointestinal nematodes in cattle by Bacillus species
Veterinary Parasitology, 2017In this study, we tested the in vitro and in vivo larvicidal activity of Bacillus species against gastrointestinal nematodes in cattle, and their viability in the presence of anthelmintics. For in vitro tests, cattle feces naturally infected with trichostrongylides were incubated with spore suspensions of Bacillus circulans (Bcir), B. thuringiensis var.
Natália Berne, Pinto +7 more
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Species of Gastrointestinal Nematodes of Cattle in Northern Ireland
British Veterinary Journal, 1972SUMMARY A survey of the gastrointestinal nematodes parasitizing cattle in Northern Ireland was conducted. Twenty-three species of worm were recovered, and their role in producing parasitic disease is discussed. In addition, several species of worm normally considered to parasitize sheep were isolated and the significance of this is briefly considered.
S M, Taylor, R J, Cawthorne
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Evaluation of Fenbendazole as an Anthelmintic for Gastrointestinal Nematodes of Cattle
American Journal of Veterinary Research, 1978SUMMARY Calves naturally infected with Ostertagia, Haemonchus, Trichostrongylus, and Cooperia were used in a controlled experiment to determine the anthelmintic efficacy of fenbendazole. methyl-5-(phenylthio)-2-benzimidazolecarbamate, and to compare this with the efficacy of levamisole.
T M, Craig, R R, Bell
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Gastrointestinal Nematode Control Programs with an Emphasis on Cattle
Veterinary Clinics of North America: Food Animal Practice, 2006Control strategies for nematode parasites rely on knowledge of the relationships between the parasites and their hosts. Specifically, these programs are based on identifying crucial points of interaction in the environment provided by the host, including genetics and the immune response, and critical periods in the physical environment in which the ...
Bert E, Stromberg, Louis C, Gasbarre
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Immunodiagnosis of gastrointestinal nematode infections
2000Thesis (Ph.D.) -- La Trobe University, 2000.; Submitted to the Dept. of Agricultural Sciences, School Life Sciences, Faculty of Science, Technology and Engineering.
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Doramectin efficacy against gastrointestinal nematodes in pigs
Veterinary Parasitology, 1996Four controlled trials with growing pigs were performed to determine efficacy of doramectin against natural and induced populations of nematodes. In Trial 1 (T1), 20 pigs with natural infections were assigned to one of two like groups on the basis of weight, sex and worm egg counts.
T B, Stewart, M C, Fox, S E, Wiles
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Fecundity of gastrointestinal trichostrongylid nematodes of sheep in the field
American Journal of Veterinary Research, 1991Summary Twenty-two Dorset Rambouillet lambs were moved to contaminated pasture on Apr 1, 1987. At regular intervals thereafter, pairs of lambs were withdrawn and euthanatized. Gastrointestinal parasites in the abomasum, small intestine, cecum, and large intestine were removed and counted.
M J, Coyne, G, Smith, C, Johnstone
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Forecasting the peak of gastrointestinal nematode infection in lambs
Veterinary Record, 1978The pattern of sheep nematode infective larvae on pasture shows a marked midsummer peak arising largely from the ewe peri-parturient egg output. Records of larval pattern over a nine-year period were examined in relation to meteorological data, and a correlation was demonstrated between the time of the summer peak and cumulative rainfall. A "wet score"
R J, Thomas, J R, Starr
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Effect of lactation on the immune response to gastrointestinal nematodes
Veterinary Record, 1976The immune expulsion of gastrointestinal nematodes is impaired during lactation by the inhibition of the lymphocyte mediated component. As a result the population of worms may increase. At the same time, the fecundity of female worms in previously immune hosts may increase to approach that of worms in fully susceptible animals.
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