Anestrus in lactating dairy cows before ovulation synchronization

Authors

J.A. Cartmill
S.E. Zarkouny
Hensley
Jeffrey S. Stevenson

Keywords

Dairy Day, 2000; Kansas Agricultural Experiment Station contribution; no. 01-166-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 861; Dairy; Body condition; Cows; Anestrus

Abstract

The incidence of anestrus in dairy cattle prior to first inseminations carried out after a minimum of 60 days postpartum ranged from 4 to 58% in first-lactation cows and 14 to 50% in older cows. Dairy cows with more days in milk, older than 2 years, and in better body condition (probably reflective of greater postpartum dry matter intakes) were more likely to cycle than thinner cows. Cows that were not cycling before the first week of insemination conceived at lower rates and took longer to become pregnant.; Dairy Day, 2000, Kansas State University, Manhattan, KS, 2000;

Recommended Citation

Cartmill, J.A.; Zarkouny, S.E.; Hensley; and Stevenson, Jeffrey S. (2000) "Anestrus in lactating dairy cows before ovulation synchronization," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 2. https://doi.org/10.4148/2378-5977.3201