Lack of effect of selenium supplementation on the incidence of weak calves in dairy herds     

D A Rice  C H McMurray  S Kennedy  W A Ellis 《The Veterinary record》1986,119(23):571-573

A double blind controlled trial was carried out on four commercial dairy herds, to investigate the effect of one 50 mg injection of selenium, 10 days before parturition, on the incidence of weak calves. Although the treatment marginally increased the selenium status of treated calves it did not decrease the incidence of the weak calf syndrome.  相似文献   

EFFECTS OF STREAK VIRUS ON THE GROWTH OF COCKSFOOT     

P. L. Catherall  Ellis  Griffiths 《Plant pathology》1961,10(2):72-77

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Lymphocyte alterations in zinc-deficient calves with lethal trait A46     

L E Perryman  D R Leach  W C Davis  W D Mickelsen  S R Heller  H D Ochs  J A Ellis  E Brummerstedt 《Veterinary immunology and immunopathology》1989,21(3-4):239-248

Lymphocyte numbers and activities were evaluated at 2, 4, 8 and 12 weeks of age in two calves with lethal trait A46 (A46), a genetic disorder affecting intestinal zinc absorption. Plasma zinc concentrations declined to subnormal by 3 weeks of age, after which anorexia, diarrhea, alopecia and hyperkeratosis occurred. Lymphocyte response to phytohemagglutinin-P (PHA), concanavalin A (Con A) and pokeweed mitogen (PWM) stimulation was variably reduced. CD4+ T-lymphocytes were subnormal on at least one observation period following onset of zinc deficiency, and relative numbers of B lymphocytes were decreased at 8 weeks. Secondary antibody responses to bacteriophage phi X 174 were significantly reduced. The results demonstrate that calves homozygous for the A46 trait have normal numbers of functional lymphocyte subpopulations at birth, and that the activity of their lymphocytes is altered once the calves become zinc deficient.  相似文献   

Metabolic Flux in Fed and Fasted Crayfish Pasifastacus leniusculus     

Robert W.  Ellis  James  Long 《Journal of the World Aquaculture Society》1994,25(2):326-332

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The humoral immune response of rainbow trout (Salmo gairdneri) immunised by various regimes and preparations of Aeromonas salmonicida antigens     

A E Ellis  K J Stapleton  T S Hastings 《Veterinary immunology and immunopathology》1988,19(2):153-164

Antibody production in rainbow trout to extracellular antigens was investigated. The following antigen preparations and immunisation regimes were used: native extracellular products (ECP) in Freund's complete adjuvant (FCA), intraperitoneally (i.p.) with and without booster; formalinized ECP in FCA, i.p. with and without booster; washed, formalinized A. salmonicida cells in FCA, i.p., with booster; native ECP in saline, i.m., four weekly injections at two different doses, 45 micrograms and 6 micrograms each injection (after the protocol of Shieh, 1985). Using crossed normal rainbow trout serum, i.p., single injection (after the protocol of Sakai, 1985). Using crossed immunoelectrophoresis all antisera contained precipitating antibodies to three to five ECP components except that from fish immunised i.m. with 6 micrograms protein where antibodies were undetectable. In no case were specific antibodies to ECP protease or haemolysin detected. In a rabbit immunised with formalinized ECP in FCA under a similar regime to the rainbow trout, antibodies to at least 15 ECP components, including protease and haemolysin, were detected. The assumption of a specific immune response to the protease, at least in respect of antibody production, in recent reports of protection afforded by vaccines composed of either crude ECP or partially purified protease (Shieh, 1985) or partially purified protease inactivated by normal serum (Sakai, 1985) is not supported by the present findings.  相似文献   

Evidence for sheep as a maintenance host for Leptospira interrogans serovar hardjo     

D V Cousins  T M Ellis  J Parkinson  C H McGlashan 《The Veterinary record》1989,124(5):123-124

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Passage of chromium-mordanted and rare earth-labeled fiber: time of dosing kinetics     

K R Pond  W C Ellis  J H Matis  A G Deswysen 《Journal of animal science》1989,67(4):1020-1028

Coastal bermudagrass hay was labeled with Cr by the Cr-mordant procedure and with 177Lu applied to the same fiber. Neutral detergent fiber prepared from the same Coastal bermudagrass hay was labeled with Yb, 169Yb, Tb and 160Tb by soaking overnight following by thorough washing and drying. Wood chips were similarly labeled with Sm or La, and Solka Floc was labeled with 147Nd and 141Ce. The carriers, labels and times of administration to cattle were: bermudagrass fiber with both Cr and 177Lu, bermudagrass fiber with 169Yb and Solka Floc labeled with 147Nd at 0 h; bermudagrass fiber with Yb, Solka Floc with 141Ce and wood chips with Sm at 24 h; wood chips with La at 48 h; and bermudagrass fiber labeled with 160Tb at the beginning and labeled with Tb at the end of a meal. Fecal collection followed and passage characteristics were determined with a two-compartment, age-dependent model. Markers labeling the different fiber sources had different (P less than .01) passage rates (Solka Floc greater than Coastal bermudagrass greater than wood chips), but there was no difference within fiber source for rare earth passage. There also was no difference between the passage characteristics of Cr-mordant and 177Lu. However, passage rate of particles administered at the beginning of the meal (160Tb) was 42% higher than for particles at the end of the meal (Tb).(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

Isolation of Leptospira interrogans serovar bratislava from sows in Iowa   总被引：3，自引：0，他引：3  

W A Ellis  A B Thiermann 《American journal of veterinary research》1986,47(7):1458-1460

Leptospira interrogans serovar bratislava was recovered from 2 of 10 sows examined from an Iowa slaughterhouse. Isolations were made from the kidney and genital tract of each sow. Serovar bratislava is not included in vaccines because it has not been previously isolated in the United States.  相似文献   

Ovine lupinosis resulting from the ingestion of lupin stubble residues in subsequent seasons     

J G Allen  K P Croker  T M Ellis 《Australian veterinary journal》1983,60(8):251-252

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Cutaneous involvement of malignant lymphoma in a horse   总被引：1，自引：0，他引：1  

B N Gupta  K K Keahey  D J Ellis 《The Cornell veterinarian》1972,62(2):205-215

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