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Animal Science Database

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Abstract

The objective of this study was to compare 2 strategies for resynchronization of ovulation based on nonpregnant diagnoses using transrectal ultrasonography or a pregnancy-associated glycoprotein (PAG) ELISA. Lactating Holstein cows (n=1,038) were submitted for first postpartum timed artificial ...

Author(s)
Silva, E.; Sterry, R. A.; Kolb, D.; Mathialagan, N.; McGrath, M. F.; Ballam, J. M.; Fricke, P. M.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2009, 92, 8, pp 3643-3650
Abstract

The objectives of this study were to evaluate the effect of reproductive protocols and reproductive tract score on reproductive performance of dairy heifers and economic outcomes of breeding programmes. Holstein heifers (n=534), 13±1 mo of age, were randomly assigned to 1 of 4 reproductive...

Author(s)
Stevenson, J. L.; Rodrigues, J. A.; Braga, F. A.; Bitente, S.; Dalton, J. C.; Santos, J. E. P.; Chebel, R. C.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2008, 91, 9, pp 3424-3438
Abstract

The aim of the present study was to compare a synchronization of time of ovulation protocol for fixed-timed embryo transfer (FTET) with the usual administration of a single dose of prostaglandin associated with detection of estrus. Also, the effect of the presence of CL at the beginning of FTET...

Author(s)
Rodrigues, C. A.; Teixeira, A. A.; Ferreira, R. M.; Ayres, H.; Mancilha, R. F.; Souza, A. H.; Baruselli, P. S.
Publisher
Elsevier B.V, Amsterdam, The Netherlands
Citation
Animal Reproduction Science, 2010, 118, 2/4, pp 110-117
Abstract

The objectives of this study were to evaluate the effects of method of presynchronization and source of supplemental Se on uterine health and reproductive performance of lactating dairy cows. Holstein cows (n=512) were assigned randomly to 2 methods of presynchronization, Presynch (2 PGF2a given 14 ...

Author(s)
Rutigliano, H. M.; Lima, F. S.; Cerri, R. L. A.; Greco, L. F.; Vilela, J. M.; Magalhães, V.; Silvestre, F. T.; Thatcher, W. W.; Santos, J. E. P.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2008, 91, 9, pp 3323-3336
Abstract

Daughter superiorities of 240 Holstein bulls of the American Breeders Service (A.B.S.) and Eastern Artificial Insemination Cooperative (E.A.I.C.) were estimated from records of paternal sisters of the sire, dam's records, and records of daughters of the maternal grandsire. Estimated daughter...

Author(s)
VAN VLECK, L. D.; CARTER, H. W.
Citation
Journal of Dairy Science, 1972, 55, pp 214-217
Abstract

ALLAIRE, F. R. Another approach to the regression of yield on a contemporary yield average: 925-926.
ANDRUS, D. F., and FREEMAN, A. E. Age distribution, life expectancy, and culling practices in Iowa dairy herds: 939-940.
ARAVE, C. W., and LAMB, R. C. Effect of blood antigen, serum and milk protein ...

Citation
Journal of Dairy Science, 1969, 52, pp 879-948
Abstract

ALLAIRE, F. R. Probabilities arising from dairy sire evaluation models: 958-959.
ATKESON, G. W., MEADOWS, C. E., and McGILLIARD, L. D. Weighting components of type in classifying Holsteins: 977.
AULETTA, F. J., and BLACK, D. L. Effect of oxytocin and central nervous system stimulants on the bovine...

Citation
Journal of Dairy Science, 1968, 51, pp 925-990
Abstract

ABEL-AZIZ, A. S., BARR, G. R., and TYLER, W. J. Empirical analysis of models for estimating heritability: 986.
ACKERMAN, R. A., THOMAS, R. O., and BUTCHER, D. F. Effects of length of dry period on production: 976-977.
ALLAIRE, F. R. Selective value of milk yield among dairy cows: 973-974.
AEAVE, C. ...

Citation
Journal of Dairy Science, 1967, 50, pp 936-1017
Abstract

ARAVE, C. W., and LAMB, R. C. Relationship between a dairy cattle production index and genotype at the serum transferrin and four milk protein loci: 666.
ARORA, K. K., and FREEMAN, A. E. Environmental correlation between paternal half-sibs for milk and milk fat production: 655.
BATRA, T. R.,...

Citation
Journal of Dairy Science, 1970, 53, pp 631-688
Abstract

THE data collected during 1947 at the A. I. station at Meldorf, Holstein, were examined. Of 811 cows inseminated 765 (94. 3%) conceived. Conceptions to 1st and 2nd service were 637% and 26. 1 % resp. The av. number of services required per cow was 1. 49. The conception rates obtained with undiluted ...

Author(s)
BONFERT, A.
Citation
Deutsche Tierarztliche Wochenschrift, 1950, 57, pp 139-142

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