The Research of Optimum Dietary Methionine Level For Xuefeng Black-Bone Chickens During the Early Growth Period

作者：Yuanzhi Yao · 年份：2005 · 研究领域：Biochemical effects in animals、Animal Nutrition and Physiology

For local chickens especial Xuefeng black-bone chickens nutritional research pad blank,a total of 500 Xuefeng black-bone chickens (1 day-old) were used to investigated the methionine requirement.Meeting the other nu- trients requirement other than methionine,the diets (meal-corn) supplemented with different level of methionine (0. 00%,0.06%,0.12%,0.18%,0.24%)were assigned to feed the treetment birds.Mensurate performance traits and serum urea nitrogen and serum methionine and serum aspartic acid and serum glutamic acid,the main results were as follow. The diets supplemented with different level of methionine had significant effect on accumulative growth and relative growth ratio and daily gain and feed efficiency and serum urea nitrogen and serum methionine and serum aspartic acid and serum glutamic acid.Under ME:12.32MJ/kg and CP:21.00%,it is suggested that optimum methionine level in Xue- feng black-bone chickens is 0.48% for the early growth period.