US - Rice is the third most widely grown cereal grain worldwide with over 700 million tons produced per year. Co-products from the processing of rice for human consumption are an abundant feed source for livestock. Research conducted at the University of Illinois is helping producers make the most of these ingredients.
Rice co-products include rice hulls, rice bran, broken rice, and rice mill feed. Rice hulls primarily consist of lignin and ash and have no nutritional value. Rice bran is the outer part of the grain after the hulls have been removed. The bran is removed from brown rice to make polished white rice and makes up 8 to 10 percent of the weight of paddy rice. It can be fed as full fat rice bran (FFRB) or defatted rice bran (DFRB)."Most of the phosphorus in rice co-products is hard for pigs to digest because it's bound to phytate," explained Hans H. Stein, a U of I professor of animal sciences. "About 84 to 88 percent of the phytate is in the bran layer so rice bran is a good source of phosphorus if we can get it into a form that pigs can absorb."
美国——大米是全世界第三大最广泛种植的谷物粮食，每年生产超过7亿吨。大米供人类食用的加工副产品是丰富的牲畜饲料来源。伊利诺斯州大学的研究帮助生产商充分利用这些成分。
大米副产品包括稻壳、米糠、碎米、碾米机饲料。稻壳主要由木质素和碎渣组成，没有营养价值。米糠是稻壳去除后的外层部分。米糠是从糙米到抛光白米的过程中去除的，占水稻重量的8到10%。它可以分为全脂米糠(FFRB)或脱脂米糠(DFRB)。“大部分在水稻副产品中的磷对猪来说是很难消化的，因为肌醇六磷酸，” 动物科学教授汉斯·h·斯坦解释说，“大约84%到88%的肌醇六磷酸是在糠层，所以米糠是一个很好的磷的来源，如果我们可以把它变成一种猪可以吸收的物质。”
(审核编辑: 搜猪网翻译官)
