研究论文 RESEARCH PAPER

复合酶制剂对肉羊生长性能、屠宰性能、肉品质以及消化代谢的影响

  • 成思源 ,
  • 马涛 ,
  • 杨东 ,
  • 王文义 ,
  • 柏映国 ,
  • 马友记 ,
  • 刁其玉
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  • 1. 甘肃农业大学动物科学技术学院, 兰州 730070;
    2. 中国农业科学院饲料研究所, 农业农村部饲料生物技术重点实验室, 北京 100081;
    3. 巴彦淖尔市农牧业科学研究所, 巴彦淖尔 015000;
    4. 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193
成思源(1997-),男,陕西铜川人,硕士研究生,从事反刍动物营养与饲料科学研究。E-mail:1191320577@qq.com

收稿日期: 2021-12-30

  网络出版日期: 2022-07-14

基金资助

财政部和农业农村部国家现代农业产业技术体系资助(CARS-38);"科技兴蒙"行动重点专项—区域性多羔肉羊选育及饲草料高效优化利用研究与示范(NMKJXM202110);中央级公益性科研院所基本科研业务费(Y2020YJ13)

Effects of Compound Enzyme Preparation on Growth Performance, Slaughter Performance, Meat Quality, Digestion and Metabolism of Mutton Sheep

  • CHENG Siyuan ,
  • MA Tao ,
  • YANG Dong ,
  • WANG Wenyi ,
  • BAI Yingguo ,
  • MA Youji ,
  • DIAO Qiyu
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  • 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    3. Bayannur Agriculture and Animal Husbandry Research Institute, Bayannur 015000, China;
    4. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2021-12-30

  Online published: 2022-07-14

摘要

本试验旨在研究饲粮中添加不同剂量复合酶制剂对肉羊生长性能、屠宰性能、肉品质和消化代谢的影响。选取体重在(21.0±0.2)kg的寒杂羊公羔72只,随机分为4组,每组3个重复,每个重复6只。4组羔羊分别饲喂在基础饲粮中添加0(对照组)、0.5(M1组)、1.0(M2组)和2.0 kg/t(M3组)复合酶制剂(蛋白酶:脂肪酶:淀粉酶=1:1:1)的试验饲粮。预试期10 d,正试期90 d。每天记录1次采食量,每隔30 d进行1次称重;正试期第70~80天采用全收粪尿法进行消化代谢试验;正试期结束后,每组选取8只羊进行屠宰,测定其屠宰性能、肉品质指标。结果显示:1)各组全期平均日增重、干物质采食量和料重比差异不显著(P>0.05)。2)M3组胴体重显著高于M1组、M2组和对照组(P<0.05),其他屠宰性能指标各组间无显著差异(P>0.05)。3)各组背最长肌肉色、滴水损失以及pH0 h、ΔpH无显著差异(P>0.05);M2组和M3组羊只背最长肌的pH24 h显著高于对照组(P<0.05)。4)各试验组粗脂肪表观消化率显著高于对照组(P<0.05);M2组和M3组的粗蛋白质表观消化率显著高于对照组(P<0.05);代谢能以及中性洗涤纤维、酸性洗涤纤维、钙、磷表观消化率各组间差异不显著(P>0.05)。综上所述,本试验条件下,在肉羊生长育肥饲粮中添加2.0 kg/t的复合酶制剂(蛋白酶:脂肪酶:淀粉酶=1:1:1)可改善肉羊的屠宰性能、肉品质以及养分表观消化率。

本文引用格式

成思源 , 马涛 , 杨东 , 王文义 , 柏映国 , 马友记 , 刁其玉 . 复合酶制剂对肉羊生长性能、屠宰性能、肉品质以及消化代谢的影响[J]. 动物营养学报, 2022 , 34(7) : 4530 -4539 . DOI: 10.3969/j.issn.1006-267x.2022.07.042

Abstract

The purpose of this experiment was to investigate the effect of adding different dosages of compound enzyme preparation in diets on the growth performance, slaughter performance, meat quality digestion and metabolism of mutton sheep. Seventy-two small-tailed Han hybrid male lambs with an average body weight of (21.0±0.2) kg were randomly divided into 4 groups with 3 replicates per group and 6 lambs per replicate. Lambs in the four groups were fed diets supplemented with 0 (control group), 0.5 (M1 group), 1.0 (M2 group) and 2.0 g/t (M3 group) compound enzyme preparation (protease:lipase:amylase=1:1:1). The adaptation period was 10 days, and the formal experiment period was 90 days. Feed intake was recorded every day and lambs were weighed every 30 d. The digestion and metabolism test was carried out by the total fecal and urine collection method on the 70th to 80th of the formal experiment period. At the end of the experiment, 8 lambs from each group were slaughtered to measure the indexes of slaughter performance and meat quality. The results showed as follows:1) the average daily gain, dry matter intake and feed/gain were not significantly different among groups (P>0.05). 2) The carcass weight of lambs in M3 group was significantly higher than that in M1 group, M2 group and control group (P<0.05), while the other slaughter performance indexes were not significantly different among groups (P>0.05). 3) There were no significant differences in meat color, drip loss, pH0 h and ΔpH among groups (P>0.05); pH24 h in M2 group and M3 group was significantly higher than that in the control group (P<0.05). 4) The apparent digestibility of ether extract in test groups was significantly higher than that in the control group (P<0.05), and the apparent digestibility of crude protein in M2 group and M3 group was significantly higher than that in the control group (P<0.05), while the metabolic energy and the apparent digestibility of neutral detergent fiber, acid detergent fiber, calcium and phosphorus was not significantly different among groups (P>0.05). To sum up, under the current conditions of this experiment, adding 2.0 g/t compound enzyme preparation into the growth and fattening diets of mutton sheep can improve the slaughter performance, meat quality and nutrient apparent digestibility of mutton sheep.

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