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U.S. soybean production is forecast at 2.6
billion bushels, down slightly from the U.S. Department of Agriculture’s
estimates last month based on lower yield prospects, especially in areas
that have experienced drought during the summer. The soybean crush was
raised 25 million bushels due to stronger projected domestic soybean
meal disappearance. Soybean exports were reduced 45 million bushels
to 975 million bushels as stronger domestic demand limits exportable
supplies. Soybean ending stocks are projected at 215 million bushels,
which are down 61 percent from 2006/07 levels. USDA estimates that soybean
meal prices will average between $205-$235 during this crop year. Bottom
line is that the U.S. 2007 soybean crop is short; the soybean crush
continues to grow at the expense of reduced soybean exports and soybean
inventories in storage; and the feed formulator will be required to
pay a little more this year for soybean meal. |
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Soybean Meal-Dairy Researchers at the University of Wisconsin conducted an experiment to evaluate the effects of urea, soybean meal, cottonseed meal or canola meal on microbial protein synthesis and nutrient flow into the omasum. The alfalfa silage, corn silage, high-moisture shelled corn and test protein diets contained 16.6% crude protein. Results indicated that microbial nonammonia nitrogen flow was similar among the oilseed protein ingredients and 14% lower than in cows fed urea. The estimated protein escaping rumen digestion was 29% for the solvent soybean meal, 51% for cottonseed meal and 34% for the canola meal. Omasal flow of microbial protein and amino acids was greater on the cows fed the three supplement protein sources compared to cows fed urea. The lower flows of amino acids and microbial protein explains the lower milk yields and altered milk components observed for cows fed a urea diet in a companion lactation study. The authors concluded that these results clearly show that supplementation with true protein was necessary to obtain sufficient microbial protein and rumen-undegraded protein to meet the metabolizable amino acid requirements of high-producing dairy cows. Brito, A.F., G.A. Broderick and S.M. Reynal. 2007. Effect of different protein supplements on omasal nutrient flow and microbial protein synthesis in lactating dairy cows. J. Dairy Sci. 90: 1828-1841. |
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