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Regulation of estrous cycles in dairy cattle: a review


Theriogenology 38(2): 255-267
Regulation of estrous cycles in dairy cattle: a review
Artificial insemination has allowed rapid genetic progress in dairy cattle through the use of semen from genetically superior sires. Detection of estrus and proper timing of insemination remain as major problems limiting reproductive efficiency in dairy herds. Numerous programs for regulating estrous cycles have been examined in this review. While several programs appear promising, results remain variable and the need for accurate detection of estrus has not been eliminated. Nulliparous heifers seem to respond more consistently than lactating cows. Further research is required to develop a successful program that will consistently produce a precise synchrony of estrus and ovulation with normal fertility and be cost effective.

Accession: 002477065

PMID: 16727134

DOI: 10.1016/0093-691x(92)90234-i

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