Ohio State University Extension Bulletin

Maximizing Fall and Winter Grazing of Beef Cows and Stocker Cattle

Bulletin 872-98


Methods of Feeding Supplements

Trough Space Changes in trough space per animal can influence competitiveness and variations in supplement consumption (Bowman and Sowell, 1997). Wagnon (1966) observed that with three feet of bunk space per cow, less fighting and dominance/submissive behavior occurred during supplementation than when six feet was allowed per cow. The three feet of bunk space did not allow cows to Fight without backing away from the trough, and therefore fewer animals were pushed away from the supplement. When excessive trough space was allowed, dominant cows were observed to chase others away from one side of the trough and to spend more time fighting.

Feeding on the Ground One of the ways to Feed on the ground is to place the feed under an electric wire. The wire is placed about 12 inches above the ground. Allocate two Feet for each beef cow.

Effect of Supplement Form on Consumption Bowman and Sowell (1997) summarized the percentage of non-feeders for blocks, dry, and liquid supplements. Over the range of animals, environments, and supplement formulations, the percentage of non-feeders averages 14.3% for blocks, 15% for dry supplements, and 23.5% for liquid supplements. The variation in supplement consumption was greater for blocks and liquids than dry supplements. Supplement characteristics such as hardness and nitrogen content may influence variation in consumption.

Nutrient Utilization
Product A Product B
40% Crude Protein
$300/ton
40% Crude Protein
$225/ton
20% CP equivalent from NPN

20 x 50% = 10

Therefore 30% CP
(40% - 10% = 30%)
$300/2000 lbs. = $0.15 $225/2,000 lbs. = $0.1125 $.15/.40 = $.375/lb of CP $.1125/.30 = $.375/lb of CP
* At these prices, both products are of equal value to the beef cow.


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