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Animal Science Database

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Abstract

Maximizing reproductive efficiency depends upon whether a heifer attains puberty before the start of the breeding season, conceives early in the breeding season, calves unassisted, raises the calf to the time it is marketed, and the heifer/cow must conceive to calve early during the subsequent...

Author(s)
Lamb, G. C.; Smith, M. F.; Perry, G. A.; Atkins, J. A.; Risley, M. E.; Busch, D. C.; Patterson, D. J.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Bovine Practitioner, 2010, 44, 1, pp 18-26
Abstract

AKINS, E. L., LTJDWICK, T. M., RICKARD, H. E., RADER, E. R., and ETGEN, W. M. Association of certain type evaluations and type scores of first-lactation Holstein females: 748. ALMQTJIST, J. O., AMANN, R. P., and O'DELL, W. T. Sperm reserves of dairy bulls as determined by depletion trials and...

Citation
Journal of Dairy Science, 1958, 41, pp 701-751
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

Adams, C. R., Becker, D. E., Terrill, S. W., Norton, H. W., and Jensen, A. H. Rate of ovulation and implantation in swine as affected by dietary protein: 1245. Alliston, C. W., and Ulberg, L. C. Early pregnancy loss in sheep at ambient temperatures of 70° and 90° F. : 1316. Anderson, D. E., and...

Citation
Journal of Animal Science, 1960, 19, pp 1216-1339
Abstract

ARNOLD, F. Utilization of proved sires and sons of proved sires: 578-579. At present only about 1 sire out of 8 is alive when proved and worthy of further use. There is little chance of increasing the use of proved sires except through their sons, or through programmes designed to prove bulls at an ...

Citation
Journal of Dairy Science, 1940, 23, pp 473-586

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