›› 2016, Vol. 43 ›› Issue (1): 108-113.doi: 10.16431/j.cnki.1671-7236.2016.01.016

• 动物营养与饲料科学 • 上一篇    下一篇

日粮粗蛋白质水平对苏博美利奴羊生长性能、消化代谢及血清生化指标的影响

王春昕1, 赵云辉1, 赵卓1, 朱景良2, 翟博1, 赵凤江1, 张明新1   

  1. 1. 吉林省农业科学院, 公主岭 136100;
    2. 吉林省查干花种畜场, 松原 138000
  • 收稿日期:2015-07-15 出版日期:2016-01-20 发布日期:2016-01-23
  • 通讯作者: 张明新 E-mail:zmxin@163.com
  • 作者简介:王春昕(1981-),女,吉林农安人,博士生,副研究员,研究方向:动物遗传育种与繁殖科学,E-mail:Tracywang@cau.edu.cn
  • 基金资助:
    国家科技支撑计划超细毛羊新品种选育与关键技术研究(2011BAD28B05-1-5);国家绒毛用羊产业技术体系圈舍设计与环境控制岗位科学家(CARS-40-16)

Effects of Dietary Crude Protein Levels on Growth Performance, Digestion and Metabolism, and Serum Biochemical Indexes of Super Merino Lamb

WANG Chun-xin1, ZHAO Yun-hui1, ZHAO Zhuo1, ZHU Jing-liang2, ZHAI Bo1, ZHAO Feng-jiang1, ZHANG Ming-xin1   

  1. 1. Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China;
    2. Jilin Province Chaganhua Breeding Farm, Songyuan 138000, China
  • Received:2015-07-15 Online:2016-01-20 Published:2016-01-23

摘要: 试验旨在研究不同粗蛋白质水平日粮对断奶初期苏博美利奴羊生长性能、消化代谢及血清生化指标的影响。按照日粮粗蛋白质水平将64只苏博美利奴羊断奶羔羊随机分为4组,粗蛋白质水平分别为13.25%(Ⅰ组)、14.33%(Ⅱ组)、15.53%(Ⅲ组)、16.60%(Ⅳ组)。进行为期60 d的饲养试验,试验前期30 d,试验后期30 d。第30和60天称重后,在每个重复随机抽取1只羊进行血液样品采集。饲养试验结束后从每个试验组中随机选取3只苏博美利奴羊进行为期15 d的消化代谢试验。结果表明,4个试验组平均日增重和平均日采食量在试验前期和试验全期均存在显著差异(P<0.05),Ⅲ组的平均日增重和平均日采食量在整个试验期均高于其他3组。各组养分表观消化率及消化能代谢率均不存在显著差异(P>0.05)。在血清生化指标的检测中,试验前期各试验组不存在显著差异(P>0.05);试验后期丙酮酸激酶和肌酸激酶组间差异显著(P<0.05)。丙酮酸激酶随着日粮粗蛋白质水平的提高呈现出上升趋势,Ⅰ组肌酸激酶高于其他各组。在苏博美利奴羊断奶初期的日粮中,15.53%粗蛋白质水平的日粮配方使羔羊平均日增重显著提高,养分表观消化率、消化能代谢率均高于其他各组。到试验结束时,血清丙酮酸激酶和肌酸激酶受日粮粗蛋白质水平影响显著。

关键词: 蛋白质水平; 苏博美利奴羊; 生长; 代谢; 生化指标

Abstract: The experiment aimed to find out the effects of dietary crude protein levels on growth performance, digestion and metabolism and serum biochemical indexes of Super Merino lamb after weaning.According to the dietary crude protein level, 64 Super Merino weaned lambs were divided into four groups, which the crude protein levels were 13.25%(group Ⅰ), 14.33%(group Ⅱ), 15.53%(group Ⅲ) and 16.60%(group Ⅳ), respectively.The experiment lasted for 60 days, 30 days for the early stage and 30 days for the later stage;And on the 30th and 60th day, blood samples were collected from one head sheep chosen from each replication, and at the end of the feeding test, 3 lambs were randomly selected from each experiment group for a 15 days digestion and metabolism experiment.The results showed that ADFI and ADG in the early and total trial period were significant differences(P<0.05), ADFI and ADG of group Ⅲ were higher than others.The apparent digestibility of nutrients and ME/DE were not significantly changed(P>0.05).In the detection of serum biochemical indexes, there was no significant difference in the earlier stage(P>0.05);At the end of the test, PK and CK showed significant difference between groups(P<0.05).PK presented a rising trend as the protein level improved, CK of group Ⅰ was higher than other groups.In Super Merino lamb early weaning diet, 15.53% protein level in the diet could significantly improve ADG, the apparent digestibility of nutrients, metabolic energy digestibility.At the end of the test, PK and CK were affected by dietary crude protein level significantly.

Key words: protein level; Super Merino lamb; growth; metabolism; biochemical index

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