Journal article
Associations between milk protein concentration, milk yield, and reproductive performance in dairy cows
JM Morton, MJ Auldist, ML Douglas, KL Macmillan
Journal of Dairy Science | ELSEVIER SCIENCE INC | Published : 2016
Abstract
Milk protein concentration in dairy cows has been positively associated with a range of measures of reproductive performance. It was possible that these associations were due to confounding by milk volume. A retrospective single cohort study was conducted using data collected from 74 dairy herds with seasonal or split calving patterns. Associations between milk protein concentration and reproductive performance in Holstein dairy cows were assessed using random effects logistic regression. The key finding from this study was that the associations between milk protein concentration in early lactation and reproductive performance were not due to confounding by milk yield. Associations between m..
View full abstractGrants
Funding Acknowledgements
We gratefully acknowledge the assistance of the veterinarians who supplied data for this study: Jakob Malmo (Maffra Veterinary Centre, Maffra, Victoria, Australia), Peter Younis and David Colson (The Vet Group, Timboon and Allansford, Victoria, Australia), Steve Jagoe (Warrnambool Veterinary Clinic, Warrnambool, Victoria, Australia), and Neil Leighton (Smithton Veterinary Services, Smithton, Tasmania, Australia), and the Australian Dairy Herd Improvement Scheme (ADHIS, Melbourne, Victoria, Australia) and Paul Koh in particular, who supplied data from the ADHIS database. This study was partly funded by the Department of Economic Development, Jobs, Transport and Resources, Government of Victoria, Victoria, Australia.