The Relation of Longevity to Fertility of Bull Semen

1.The analysis of the breeding records kept on ten sires and 306 cows show a highly significant correlation between the longevity and the conception rate of bull semen (+ 0.6964±0.0212).2.Six of eight sires studied showed significant positive correlations between longevity and conception rate; two s...

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Bibliographic Details
Published in:Journal of dairy science 1943-11, Vol.26 (11), p.983-985
Main Authors: Margolin, S., Bartlett, J.W., Lepard, O.L.
Format: Article
Language:English
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Summary:1.The analysis of the breeding records kept on ten sires and 306 cows show a highly significant correlation between the longevity and the conception rate of bull semen (+ 0.6964±0.0212).2.Six of eight sires studied showed significant positive correlations between longevity and conception rate; two showed insignificant negative correlations.3.There was only a slight difference in percentage of conception for fresh semen and one-day semen (63.7 per cent and 61.9 per cent, respectively).
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(43)92798-5