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Abstract

61 Holstein cows were divided into 2 groups. Group A were inseminated if oestrus was observed before 60 days post partum. Group B were inseminated only after 60 days post partum. Only 57% of the cows in group A were inseminated before 60 days post partum. Compared with group B, cows inseminated...

Author(s)
Mutsvangwa, T.; Hamudikuwanda, H.
Citation
Zimbabwe Journal of Agricultural Research, 1994, 32, 1, pp 99-102
Abstract

BEARDEN, H. J. The effect of some winter management practices and herd size on the 60- to 90-day nonreturns in artificial breeding: 638. BECKER, R. B., and ARNOLD, P. T. D. Tenure of dairy bulls in artificial service: 622. BIALY, G., and SMITH, V. R. Rapid rates for freezing bull semen: 622. BOYD., ...

Citation
Journal of Dairy Science, 1957, 40, pp 597-638
Abstract

ACKERMAN, R. A., and HYATT, G. (Jr. ). Prepartum II. Some effects on production of cows and growth of calves: 503. ALBRECTSEN, R. Production results of three generations of artificial breeding and of the use of analysed sires: 513-514. ALMQUIST, J. O., and THACKER, D. L. The fertility of bovine...

Citation
Journal of Dairy Science, 1951, 34, pp 475-514
Abstract

ANDEBSON, W. R., and FLIPSB, R. J. Origin and fatty acid composition of the glycerides in the semen of dairy bulls: 619.
ABAVE, C. W., and LABEN, R. C. Study of genetic progress in California dairy herds: 629.
BAKEB, F. N. Vital staining before Feulgen-DNA determinations on bovine spermatozoa: 636. ...

Citation
Journal of Dairy Science, 1963, 46, pp 591-650
Abstract

ALFORD, J. A. The occurrence of penicillin and spreptomycin-resistant microorganisms in diluted bull semen: 579. ASCHBACHER, P. W., SMITH, V. R., and STONE, W. H. A study of the optimum time for insemination: 576. BECKER, R. B., and ARNOLD, P. T. D. Tenure and turnover of desirable dairy bulls in ...

Citation
Journal of Dairy Science, 1953, 36, pp 559-607
Abstract

ANDERSON, W. R., and FLIPSE, R. J. Production of carnosine by bovine spermatozoa: 938. BECKER, R. B., and ARNOLD, P. T. D. Preliminary life-expectancy estimates for desirable bulls in artificial insemination: 939. BEROUSEK, E. R., WHATLEY, J. A. (Jr. ), MORRISON, R. D., MUSGRAVE, S. D., and HARVEY, ...

Citation
Journal of Dairy Science, 1959, 42, pp 894-944
Abstract

ALEXANDER, M. H. A study of the inheritance of persistency in milk production: 375.ALEXANDER, M. H. Length of gestation in the five major breeds of dairy cattle: 377-378.ALMQUIST, J. O., and PRINCE, P. W. The effect of a combination of penicillin, streptomycin and sulfanilamide upon the fertility...

Citation
Journal of Dairy Science, 1950, 33, pp 375-412
Abstract

BIALY, G., and HESS, E. A. The influence of added lipoprotein on the freezing of bovine spermatozoa: 623. BRAKEL, W. J. An evaluation of the American Jersey Cattle Club star bull program: 617. BRANTON, C., GRIFFITH, W. S., PATRICK, T. E., JOHNSTON, J. E., and D'ARENSBOURG, G. F. Seasonal trends in...

Citation
Journal of Dairy Science, 1955, 38, pp 587-628

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