Dr. Jim Drackley is Professor of Animal Sciences at the University of Illinois at Urbana Champaign. Jim grew up on a small dairy farm in Minnesota and received his Ph.D. in nutritional Physiology from Iowa State University. Since joining the faculty of the University of Illinois in 1989, his research program has focused on improving
In July 2020, several of our members connected for a ‘Calf Rearing Conflab’. NZARN members a full copy of the presentation is available below if you are logged in. Non-members looking for more information are encouraged to use our ‘contact a nutritionist’ form and ‘member directory’ to find a member who can help them answer their questions. If you
Nutrition and management of pre-weaned calves matters! Studies show early life health and nutrition are associated with improved reproductive performance later in life.
Nutrition and management of pre-weaned calves matters! Studies show early life health and nutrition are associated with improved lactation performance later in life.
The early life nutrition of calves has a direct impact on performance later in life. Calves need to be grown to reach 50% of their mature bodyweight in the first 12 months and 85% of their mature bodyweight at 24months of age. Colostrum is important in the first few hours with the key points being
Major factors affecting milk yield are the ability to supply the mammary gland with nutrients and the gland to produce milk. Achieving body size targets at first calving is critical: Loss of 300 kg of milk (1st lact) per -50kg body weight (BW) at calving, loss of 720 kg of milk (3 lact) per -50kg
Effects of dietary betaine on growth performance and lactation in ruminants. F.R. Dunshea University of Melbourne NZARN members a full copy of the presentation is available below if you are logged in. Non-members looking for more information are encouraged to use our ‘contact a nutritionist’ form and ‘member directory’ to find a member who can help them answer their
Holstein-Friesian calves selected for divergence in residual feed intake during growth exhibited significant but reduced residual feed intake divergence in their first lactation. Authors: K.A. Macdonald, J.E. Pryce, R.J. Spelman, S.R. Davis, W.J. Wales, G.C. Waghorn, Y.J. Williams, L. C. Marett, B. J. Hayes Published: Journal of Dairy Science 2014 97:1427-1435 NZARN members a full
Need help with your farming business?
Copyright © 2018 New Zealand Association of Ruminant Nutritionists | Privacy Policy
Powered by Revolve Media
