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Nutritional Evaluation of Imported Organic Feeds and Locally Produced Agricultural By-products for Organic Ruminant Farming  

Park, Joong-Kook (국립축산과학원)
Kim, Chang-Hyun (한경대학교 동물생명환경과학부)
Publication Information
Korean Journal of Organic Agriculture / v.19, no.4, 2011 , pp. 513-528 More about this Journal
Abstract
This study was conducted to evaluate the nutritional value of locally produced organic agricultural by-products to substitute imported organic feeds for organic ruminant farming. Imported organic feeds (corn grain, soybean meal, soybean seed, oat grain, barley grain, wheat grain, buckwheat, sunflower seed meal) and byproducts (rice bran, grape seed meal, rice straw, soybean hull, soybean curd, rice hull, green kernel rice, and crushed rice grain) were analyzed for chemical composition and NDF, ADF, mineral, and amino acid contents and anti-nutritional factors. Dry matter, NDF and ADF contents in organic feeds were higher than those in conventional feeds. Especially, the 9.65% fat content of organic soybean meal was 6 times higher than the 1.95% fat content of conventional soybean meal. Fat contents of rice bran, grape seed meal, green kernel rice, and crushed rice grain were 25.66, 6.09, 3.57 and 1.59%, respectively. Protein contents of soybean hull and soybean curd were 14.68 and 19.87%, respectively, which are highest among organic by-products. Levels of aflatoxin in all feeds were below the safety level. Therefore, organic rice bran, green kernel rice and crushed rice as energy source, and soybean hull and soybean curd as protein source could partial replace imported feeds for organic ruminant farming.
Keywords
organic feed; by-product; ruminant; nutritional value;
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Times Cited By KSCI : 5  (Citation Analysis)
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