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Animal Science Database

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Abstract

The study of reproductive physiology in domestic ruminants has progressed from the whole animal to the molecular level in an amazingly short period of time. The volume of information on this subject is enormous; therefore, we have focused on domestic ruminants, with an emphasis on cattle. To date, ...

Author(s)
Smith, M. F.; Geisert, R. D.; Parrish, J. J.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 7, pp 2952-2970
Abstract

No significant breed or seasonal differences were found for length of oestrus and time of ovulation after end of oestrus among Ayrshires, Guernseys, Jerseys and Holsteins.
Duration of oestrus of 17.8 hrs. for 86 cows was significantly longer than the average of 15.3 hrs. for 46 heifers. The cows ...

Author(s)
TRIMBERGER, G. W.
Citation
Research Bulletin. Nebraska Agricultural Experiment Station, 1948, 153, pp 26 pp.
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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