What mineral supplementation do I need and when do I need it?
Beef producers might know they should supplement their herds with mineral, but trying to wade through all the choices at the livestock supply store can be overwhelming. Commercial suppliers seem to make claims and offer something different, but with tubs and bags of every colour and price available, how to you know which one is right for your herd? What minerals do your cattle actually need and how is it best delivered?
In general, beef cattle producers should be supplementing mineral to their herds whether they are grazing or being fed a winter ration.
Megan Van Schaik, a Beef Cattle Specialist with the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) says there are some key things producers want to look at. In general, producers should be supplementing mineral to their herds whether they are grazing or being fed a winter ration.
Van Schaik says there are a host of variables that impact mineral nutrition and deficiencies in beef herds. “They present in many different ways and alarm bells usually go off when we see reproductive issues,” she says, but adds that mineral status can be linked to general health problems and even calf abnormalities. Mineral deficiencies can also cause less obvious production losses that can be easily avoided with proper supplementation. Continue reading →
This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the October 2017 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
Averages are useful statistics, but sometimes averages can be misleading. As the University of Saskatchewan’s late Iain Christison said, “the average human has one breast and one testicle”. Canada’s rainfall may be close to average this year – but much of the country is experiencing severe drought, and most of the rest is soaked. Either way, low yields, unharvestable or spoiled forage mean that winter feed supplies will be below average in many places, and nutritional value likely won’t be average, either.
For instance, drought-stricken pastures and forage crops have lower levels of carotene, which cattle need to produce vitamin A. A recent paper from Cheryl Waldner and Fabienne Uehlinger of the Western College of Veterinary Medicine (Can. J. Anim. Sci. 97:65-82) looked at 150 beef cow-calf herds in Alberta and Saskatchewan. Calves born the spring following a drought had a much higher risk of vitamin A deficiency, and calves with severe vitamin A deficiency were nearly three times more likely to die than those with higher levels. Continue reading →