Published 1996 in American journal of veterinary research
To quantify the effect of early-lactation milk and milk fat production on time to conception.
Event-time analysis (survival analysis).
44,450 cows delivering calves between September 1985 and September 1986, from 6,227 Ayrshire dairy herds in 80 Finnish communities.
Primiparous and multiparous cows were… CONTINUE READING