动物营养学报2018，Vol.30Issue(6)：2209-2214,6.DOI:10.3969/j.issn.1006-267x.2018.06.024
饲粮蛋氨酸水平对羊驼生产性能、养分表观消化率和血清生化指标的影响
Effects of Dietary Methionine Level on Performance, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Alpacas
摘要
Abstract
This experiment was conducted to study the effects of dietary methionine level on performance, nu-trient apparent digestibility and serum biochemical indexes of alpacas. Nine 26-month-old female alpacas with similar body weight were randomly divided into three groups with 3 replicates in each group and 1 alpaca in each replicate. The methionine levels were set with 0.16％, 0.32％ and 0.64％ in each group. The feeding ex-periment and digestion experiment were conducted with total mixed ration. The pre-experimental period lasted for 7 days, and the experimental period lasted for 60 days. The results showed as follows:1) the average daily feed intake, average daily gain and wool production of body surface area per cm2 of alpacas of group 0.32％and group 0. 64％ were significantly higher than those of group 0. 16％ ( P<0. 05 ) , and group 0. 32％ was slightly higher than those of group 0.64％ ( P>0.05) . 2) The apparent digestibilities of crude protein, neutral detergent fiber, crude fiber and calcium of group 0.32％ was the highest, and significantly higher than those of group 0.16％ ( P<0.05);the acid detergent fiber apparent digestibility of group 0.32％ was significantly higher than that of group 0.64％ ( P<0.05); the methionine apparent digestibility of group 0.32％ and group 0.64％was significantly higher than that of group 0.16％ ( P<0.01) . 3) The activities of alanine transaminase, aspar-tate aminotransferase and alkaline phosphatase in serum of alpacas had no significant difference among all groups ( P>0.05) , as well as the contents of triglyceride, glucose, usea nitrogen and total protein in serum of alpacas (P>0.05). In conclusion, the optimal dietary methionine level of female alpacas is 0.32％ under the condition of this experiment.关键词
羊驼/蛋氨酸/生产性能/养分表观消化率/血清生化指标Key words
alpacas/methionine/performance/nutrient apparent digestibility/serum biochemical indexes分类
农业科技引用本文复制引用
郝薪云,林英庭,刘迎春,宋玉芹,朱风华,王述柏..饲粮蛋氨酸水平对羊驼生产性能、养分表观消化率和血清生化指标的影响[J].动物营养学报,2018,30(6):2209-2214,6.基金项目
公益性行业(农业)科研专项中国羊驼养殖营养需要和饲养标准研发(201303119-02) （农业）
