| PUBLISHED BY SOYBEAN GROWERS FOR THE FEED INDUSTRY | OCTOBER 2007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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