Results 151 to 160 of about 2,243 (197)

Isolation of infective Dictyocaulus larvae from herbage

Veterinary Parasitology, 1975
Abstract A technique is described in which Dictyocaulus larvae are stimulated to activity and isolated free from any debris by migration in agar gel. Microscopical recognition and enumeration was carried out on stained parasitic larvae while the free living species were decolourized. The technique was found suitable for routine use.
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Plasma Enzyme Changes Associated with Experimental Dictyocaulus viviparus Infection in Rabbits

American Journal of Veterinary Research, 1970
SUMMARY The changes in total plasma lactic dehydrogenase (ldh) and its isoenzymes (ldh-1 or heart type and ldh-5 or muscle type) and plasma glutamic oxaloacetic transaminase (got) associated with experimental infection of Dictyocaulus viviparus in rabbits were determined.
S N, Shetty, J A, Himes, G T, Edds
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Comparison of three enzyme immunoassays for diagnosis of Dictyocaulus viviparus infection

Veterinary Parasitology, 1993
Three enzyme-linked immunosorbent assays (ELISA) that detect antibodies against Dictyocaulus viviparus in cattle were compared for sensitivity, specificity and seroconversion after primary infection. These assays were (i) an indirect ELISA with crude somatic antigens from adult D.
de Leeuw, W.A., Cornelissen, J.B.W.J.
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The Eosinophilic Response to Infection with the Cattle LUngworm, Dictyocaulus Viviparus

Journal of Infectious Diseases, 1958
Differential white-cell counts were made on the blood of 17 test cattle and 3 uninfected controls. The controls and 16 of the test cattle were Holsteins; the other one was a Sindhi-Jersey. The test cattle were 2 to 7 months old when initially infected. No animal was reexposed to infection unless its feces were repeatedly found negative for first-stage ...
T B, WEBER, R, RUBIN
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Experimental infections with Dictyocaulus viviparus in vaccinated and unvaccinated red deer

Veterinary Record, 1982
Four of eight red deer calves which had been artificially reared and were lungworm free were vaccinated with bovine lungworm oral vaccine when eight weeks old; the other four were not vaccinated. Three of each category were challenged daily with 500 Dictyocaulus viviparus infective stage larvae per kg liveweight for 17 days when six months old while ...
W, Corrigall, A G, Coutts, C F, Watt, A R, Hunter, R, Munro   +4 more
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Determination of Viability and Infectivity of Dictyocaulus viviparus Larvae after Storage

Research in Veterinary Science, 1970
Infective third stage Dictyocaulus viviparus larvae were tested for viability by direct microscopic examination, ability to exsheath in pepsin HCl solution and ability to infect guinea-pigs, at intervals during storage for 12 weeks at 4°C. The percentage of larvae judged to be alive by visual examination remained high throughout the experiment.
R L, Cornwell, R M, Jones
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Reactivation and shedding of bovine herpesvirus 1 following Dictyocaulus viviparus infection

Journal of Comparative Pathology, 1983
Three groups of 4 bullocks which had recovered from infectious bovine rhinotracheitis (IBR) were infected 5 months later with Dictyocaulus viviparus larvae. Bovine herpesvirus 1 was recovered from days 7 to 21 post-infection from the nasal secretions of the group given 50 larvae per kilogram and on one occasion from those given 1000 larvae per animal ...
P M, Msolla, E M, Allan, I E, Selman, A, Wiseman   +3 more
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Efficacy of levamisole against inhibited Dictyocaulus viviparus infection in cattle

Research in Veterinary Science, 1981
The efficacy of 7·5 nig/kg levamisole administered sub-cutaneously (o cattle was evaluated in two trials in cattle which harboured cither natural or artificial Dictyocaulus viviparus infection. I ungworm burdens were recovered by use of a lung perfusion technique and levamisole was found to be 97·7 and 93·5 per cenl effective against natural and ...
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Efficacy of Fenbendazole Against Adult Dictyocaulus viviparus in Experimentally Infected Calves

American Journal of Veterinary Research, 1977
SUMMARY Fenbendazole, methyl-5 (phenylthio)-2-benzimidazolecarbamate, a new broad-spectrum anthelmintic, was evaluated against the adult Dictyocaulus viviparus, lungworm of cattle, in artificially infected calves. At a dosage of 5 mg/kg of body weight, fenbendazole removed 100% of the worms if given as an oral suspension, and 99.7% of the worms if ...
M B, Saad, R, Rubin
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Dose‐Dependent Pathophysiological Changes in Cattle Experimentally Infected withDictyocaulus viviparus

Journal of Veterinary Medicine, Series B, 1993
SummaryIn two trials five calves were each experimentally infected on three consecutive days with a total number of either 30Dictyocaulus viviparuslarvae per kg body weight (trial A) or 3 larvae/kg body weight (trial B). Five calves served as non‐infected controls.
T, Schnieder, A, Daugschies
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