动物营养学报 >

2021 , Vol. 33 >Issue 9: 5098 - 5107

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.09.030

反刍与草食动物营养与饲料 RUMINANT AND HERBIVORE NUTRITION AND FEED

过瘤胃半胱胺对舍饲滩羊生长性能、养分表观消化率、肉品质及血清抗氧化指标的影响

  • 李荫柱 ,
  • 钟锐 ,
  • 李海海 ,
  • 方洲 ,
  • 徐小春 ,
  • 寇启芳 ,
  • 张桂杰
展开
  • 1. 宁夏大学动物科学系, 银川 750021;
    2. 宁夏草牧业工程技术研究中心, 银川 750021;
    3. 北方民族大学生物科学与工程学院, 银川 750021;
    4. 吴忠市红寺堡区天源良种羊繁育养殖有限公司, 吴忠 751900
李荫柱(1994-),男,陕西榆林人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:Pillar_Lyz@163.com

收稿日期: 2021-02-21

  网络出版日期: 2021-09-18

基金资助

国家自然科学基金项目（31960672）；教育部霍英东青年教师基金（161106）；农牧交错带牛羊牧繁农育关键技术集成示范项目（16200158-08）；宁夏高等学校一流学科建设（草学学科）资助项目（NXYLXK2017A01）

收起

Effects of Rumen Protected Cysteamine on Growth Performance, Nutrient Apparent Digestibility, Meat Quality and Serum Antioxidant Indexes of Captivity Tan Sheep

  • LI Yinzhu ,
  • ZHONG Rui ,
  • LI Haihai ,
  • FANG Zhou ,
  • XU Xiaochun ,
  • KOU Qifang ,
  • ZHANG Guijie
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  • 1. Departments of Animal Science, Ningxia University, Yinchuan 750021, China;
    2. Ningxia Grassland and Animal Husbandry Engineering Technology Research Center, Yinchuan 750021, China;
    3. College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China;
    4. Hongsipu District Tianyuan Well-bred Sheep Breeding Co., Ltd., Wuzhong 751900, China

Received date: 2021-02-21

  Online published: 2021-09-18

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摘要

本试验旨在研究过瘤胃半胱胺（RP-CS）对舍饲滩羊生长性能、养分表观消化率、肉品质及血清抗氧化指标的影响。选择3月龄、体重[（21.61±0.80）kg]相近、健康的去势滩羊48只，随机分为4组，每组3个重复（圈），每个重复4只羊。对照组饲喂基础饲粮，试验组分别在基础饲粮中添加0.02%（0.02%组）、0.04%（0.04%组）和0.06%的RP-CS（0.06%组）。预试期7 d，正试期134 d。结果表明：1）与对照组相比，试验组的平均日采食量和料重比显著降低（P<0.05），0.04%组的平均日增重显著升高（P<0.05）。2）与对照组相比，0.02%组和0.04%组的干物质和粗蛋白质表观消化率显著升高（P<0.05），0.04%组和0.06%组的有机物表观消化率显著升高（P<0.05）。3）与对照组相比，试验组的背最长肌系水力、宰后45 min肉色红度值和宰后24 h pH均显著升高（P<0.05），0.04%组、0.06%组的背最长肌蒸煮损失和剪切力显著降低（P<0.05）。4）与对照组相比，试验组的血清谷胱甘肽过氧化酶活性显著升高（P<0.05），血清丙二醛含量显降低（P<0.05）；0.04%组和0.06%组的血清总抗氧化能力和总超氧化物歧化酶活性显著升高（P<0.05）。由此可见，舍饲滩羊饲粮中添加0.02%、0.04%和0.06%的RP-CS能够不同程度增加养分表观消化率，改善肉品质，增强抗氧化功能；且添加0.04%的RP-CS可显著提高生长性能。本试验中，建议舍饲滩羊饲粮中RP-CS添加量以0.04%为宜。

关键词： 过瘤胃半胱胺; 舍饲滩羊; 生长性能; 养分表观消化率; 肉品质; 血清抗氧化指标

本文引用格式

李荫柱 , 钟锐 , 李海海 , 方洲 , 徐小春 , 寇启芳 , 张桂杰 . 过瘤胃半胱胺对舍饲滩羊生长性能、养分表观消化率、肉品质及血清抗氧化指标的影响[J]. 动物营养学报, 2021 , 33(9) : 5098 -5107 . DOI: 10.3969/j.issn.1006-267x.2021.09.030

Abstract

The objective of the present experiment was to determine the effects of rumen protected cysteamine (RP-CS) on growth performance, nutrient apparent digestibility, meat quality and serum antioxidant indexes of captivity Tan sheep. Forty-eight 3-month-old healthy castrated Tan sheep with the similar body weight of (21.61±0.80) kg were randomly divided into 4 groups with 3 replicates (pens) in each group and 4 lambs in each replicate. Sheep in the control group were fed a basal diet, and the others in experimental groups were fed basal diets supplemented 0.02% (0.02% group), 0.04% (0.04% group) and 0.06% RP-CS (0.06% group), respectively. The pre-experimental period lasted for 7 days, and the experimental period lasted for 134 days. The results showed as follows:1) compared with the control group, the average daily feed intake and feed to gain ratio of experimental groups were significantly decreased (P<0.05), and the average daily gain of 0.04% group was significantly increased (P<0.05). 2) Compared with the control group, the dry matter apparent digestibility and crude protein apparent digestibility of 0.02% group and 0.04% group were significantly increased (P<0.05), and the organic matter apparent digestibility of 0.04% group and 0.06% group was significantly increased (P<0.05). 3) Compared with the control group, the water-holding capacity, meat color redness value at 45 min after slaughter and pH at 24 h after slaughter in longissimus dorsi of experimental groups were significantly increased (P<0.05), and the cooking loss and shear force in longissimus dorsi of 0.04% group and 0.06% group were significantly decreased (P<0.05). 4) Compared with the control group, the serum glutathione peroxidase activity of experimental groups was significantly increased (P<0.05), and the serum malondialdehyde content was significantly decreased (P<0.05); the serum total antioxidant capacity and total superoxide dismutase activity of 0.04% group and 0.06% group were significantly increased (P<0.05). In conclusion, the addition of 0.02%, 0.04% and 0.06% RP-CS in the diet can increase the nutrient apparent digestibility in different degrees, improve the meat quality, enhance the antioxidant function of captivity Tan sheep. In addition, the addition of 0.04% RP-CS in the diet can improve the growth performance. In this experiment, it is suggested that the optimum RP-CS addition is 0.04% in the diet of captivity Tan sheep.

Key words： rumen protected cysteamine; captivity Tan sheep; growth performance; nutrient apparent digestibility; meat quality; serum antioxidant indexes

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