Stevenson, J.S.; Cartmill, J.A.; Zarkouny, S.E.; Hensley
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2000)
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 ...