论文部分内容阅读
美国堪萨斯州立大学M.D.Tokach指出,缬氨酸可能是高蛋白哺乳母猪饲料的一种限制性氨基酸,缬氨酸不足将限制合成赖氨酸的使用效果。养猪营养学家B.J. Kerr发现,缬氨酸系生长猪的第4限制性氨基酸。美国NRC建议,0～5kg幼猪饲料至少应含0.8％缬氨酸.对于50～110kg肥育猪,缬氨酸建议量降至0.4％。妊娠、哺乳母猪的缬氨酸建议量分别为0.32％和0.60％。
M.D.Tokach of Kansas State University pointed out that valine may be a limiting amino acid in feed for high-protein lactation sows, and valine deficiency will limit the use of synthetic lysine. B.J. Kerr, a pig nutritionist, found that valine is the fourth limiting amino acid in growing pigs. The United States NRC recommends that at least 0 to 5 kg of young pig feed should contain at least 0.8% valine, and valine should be reduced to about 0.4% for 50 to 110 kg fattening pigs. The valine recommendations for pregnant and lactating sows were 0.32% and 0.60%, respectively.