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Abstract

Date were obtained on 5422 cows in the Louisiana Artificial Breeding Associations. There was no significant difference in the conception rate of cows inseminated in the first 4 six-hour periods after oestrus; the mean daily decline in the fertility of semen was 3.27%. The breeding efficiency of...

Author(s)
Patrick, T. E.
Publisher
Univ. Missouri, Columbia, USA
Citation
A study of some factors affecting efficiency of reproduction in dairy cattle serviced by artificial insemination., 1952, Publ. 4279, pp 90 pp.
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