Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J. P. Picanso"'
Autor:
Mark Thurmond, J. P. Picanso
Publikováno v:
Preventive Veterinary Medicine. 16:31-38
This paper presents a method for assessing the potential bias associated with culling that could confound a relationship between maternal age at conception and fetal survival in dairy cows. A nominal variable (PREGSTAT) was created to distinguish bet
Publikováno v:
American Journal of Epidemiology. 133:164-176
A prospective study was undertaken on a California dairy from 1984 to 1987 to examine factors associated with contact transmission of bovine leukemia virus in cows. Two approaches were used to model the probability of infection. First, the expected n
Publikováno v:
Journal of Veterinary Diagnostic Investigation. 2:274-282
A prospective serologic investigation was undertaken on 3 California dairies (herds 1,3, and 4, as previously designated in a report on abortion surveillance) to determine if fetal loss was associated with infectious disease agents in cows. The diagn
Publikováno v:
Preventive Veterinary Medicine. 9:45-58
One hundred and sixty-one calves that had received colostrum from bovine leukemia virus (BLV)-infected cows were followed to evaluate factors associated with the decay of colostral antibodies to BLV. Three survival parametric models (Weibull, log-nor
Autor:
Mark Thurmond, J. P. Picanso
Publikováno v:
Preventive Veterinary Medicine. 8:41-53
A computer-based on-farm surveillance system of dairy cow abortion was presented as a means of improving diagnosis and knowledge of bovine abortion. Abortion was defined as fetal death between 42 and 260 days of gestation. Three measures of abortion
Autor:
M L, Anderson, C W, Palmer, M C, Thurmond, J P, Picanso, P C, Blanchard, R E, Breitmeyer, A W, Layton, M, McAllister, B, Daft, H, Kinde
Publikováno v:
Journal of the American Veterinary Medical Association. 207(9)
To estimate the minimum rate of abortion attributable to infection with Neospora sp in selected California dairy herds.Prospective study.Twenty-six dairy herds containing 19,708 cows were studied. Fourteen herds had a history of abortions attributabl
Publikováno v:
Journal of reproduction and fertility. 102(1)
The purpose of this study was to investigate the effect of the status of dietary zinc and serum zinc and copper concentrations on the risk of fetal loss in 570 cows. Three herds received no supplements (herds 1, 3, 4), while cows in herd 2 received s
Publikováno v:
Journal of the American Veterinary Medical Association. 205(3)
Milk samples were collected from all lactating cows on 60 dairies (mean number of cows/dairy, 584; range, 66 to 2,834) randomly selected from 701 California dairies enrolled in the Dairy Herd Improvement Association program. Samples were tested, by m
Publikováno v:
Journal of the American Veterinary Medical Association. 203(11)
A prospective clinical trial was conducted on 2 large dairies in the San Joaquin Valley of California to determine whether a single intrauterine infusion with procaine penicillin G or oxytetracycline reduced the calving-to-conception interval in cows
Autor:
M C, Thurmond, J P, Picanso
Publikováno v:
Journal of the American Veterinary Medical Association. 203(3)
A prospective observational study was performed to determine whether palpation per rectum of cows in the first 6 weeks of gestation to diagnose pregnancy contributed to fetal attrition. Pregnancy diagnoses were made by private practitioners as part o