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

郝薪云, 林英庭, 刘迎春, 宋玉芹, 朱风华, 王述柏

doi:10.3969/j.issn.1006-267x.2018.06.024

动物营养学报 >

2018 , Vol. 30 >Issue 6: 2209 - 2214

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.06.024

反刍与草食动物营养 Ruminant and herbivore nutrition

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

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1. 青岛农业大学动物科技学院, 青岛 266109;
2. 青岛市畜牧兽医研究所, 青岛 266000

郝薪云(1991-),男,山东青岛人,硕士研究生,从事动物营养与饲料科学研究。E-mail:549636705@qq.com

收稿日期: 2017-12-01

网络出版日期: 2018-06-20

基金资助

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）

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Effects of Dietary Methionine Level on Performance, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Alpacas

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1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
2. Institute of Animal Husbandry and Veterinary, Qingdao 266000, China

Received date: 2017-12-01

Online published: 2018-06-20

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摘要

本试验旨在研究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。选用体重相近的26月龄母羊驼9只，随机分为3个组，每组3个重复，每个重复1只。各组饲粮蛋氨酸水平分别为0.16%、0.32%、0.64%，采用全混合日粮进行饲养试验和代谢试验。预试期7 d，正试期60 d。结果表明：1）0.32%组和0.64%组羊驼平均日采食量、平均日增重、单位体表面积产毛量显著高于0.16%组（P<0.05），0.32%组略高于0.64%组（P>0.05）。2）粗蛋白质、中性洗涤纤维、粗纤维和钙表观消化率均以0.32%组最高，与0.16%组差异显著（P<0.05）；0.32%组酸性洗涤纤维表观消化率显著高于0.64%组（P<0.05）；0.32%组和0.64%组蛋氨酸表观消化率极显著高于0.16%组（P<0.01）。3）各组间羊驼血清谷丙转氨酶、谷草转氨酶、碱性磷酸酶活性及甘油三酯、葡萄糖、尿素氮和总蛋白含量均无显著差异（P>0.05）。由此可见，在本试验条件下，母羊驼饲粮适宜蛋氨酸水平为0.32%。

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

本文引用格式

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 . DOI: 10.3969/j.issn.1006-267x.2018.06.024

Abstract

This experiment was conducted to study the effects of dietary methionine level on performance, nutrient 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 experiment 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, aspartate 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.

Key words： alpacas; methionine; performance; nutrient apparent digestibility; serum biochemical indexes

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