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氮氨甲酰谷氨酸和过瘤胃蛋氨酸对舍饲滩羔羊生长性能、屠宰性能及血清生化指标的影响

  • 李荫柱 ,
  • 晁雅琳 ,
  • 寇启芳 ,
  • 牛文智 ,
  • 张桂杰
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  • 1. 宁夏大学动物科学系, 银川 750021;
    2. 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:1439179355@qq.com

收稿日期: 2020-02-14

  网络出版日期: 2020-08-13

基金资助

国家自然科学基金项目(31702134);教育部霍英东青年教师基金项目(161106);宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01)

Effects of N-Carbamyl Glutamate and Rumen Protected Methionine on Growth Performance, Slaughter Performance and Serum Biochemical Parameters of Tan Lambs

  • LI Yinzhu ,
  • CHAO Yalin ,
  • KOU Qifang ,
  • NIU Wenzhi ,
  • ZHANG Guijie
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  • 1. Departments of Animal Science, Ningxia University, Yinchuan 750021, China;
    2. Hongsipu District Tianyuan Well-Bred Sheep Breeding Co., Ltd., Wuzhong 751900, China

Received date: 2020-02-14

  Online published: 2020-08-13

摘要

本试验旨在研究氮氨甲酰谷氨酸(NCG)与过瘤胃蛋氨酸(RP-Met)对舍饲滩羔羊生长性能、屠宰性能及血清生化指标的影响。试验选取遗传背景一致、体重为(22.36±1.10)kg的健康去势滩羔羊60只,随机分成4组,每组3个重复(栏),每个重复5只羊。对照组(CK组)饲喂基础饲粮,试验组分别在基础饲粮中添加0.10% NCG(NCG组)、0.06% RP-Met(RP-Met组)和0.10% NCG+0.06% RP-Met(NRM组)。试验期100 d。结果表明:与对照组相比,试验组滩羔羊平均日增重、胴体重和屠宰率均显著提高(P<0.05),而料重比显著降低(P<0.05);与NCG组和RP-Met组相比,NRM组平均日增重显著提高(P<0.05),骨重/胴体重、血清尿素氮和总胆固醇含量显著降低(P<0.05)。综上所述,饲粮中0.10% NCG+0.06% RP-Met组合能够明显改善舍饲滩羔羊生长性能、屠宰性能及血清生化指标,组合效果优于0.10% NCG或0.06% RP-Met单独添加。

本文引用格式

李荫柱 , 晁雅琳 , 寇启芳 , 牛文智 , 张桂杰 . 氮氨甲酰谷氨酸和过瘤胃蛋氨酸对舍饲滩羔羊生长性能、屠宰性能及血清生化指标的影响[J]. 动物营养学报, 2020 , 32(8) : 3927 -3933 . DOI: 10.3969/j.issn.1006-267x.2020.08.051

Abstract

The objective of the present experiment was to determine the effects of N-carbamyl glutamate (NCG) and rumen protected methionine (RP-Met) on growth performance, slaughter performance and serum biochemical parameters of Tan lambs. Sixty healthy castrated Tan lambs with the same genetic background and similar body weight of (22.36±1.10) kg were randomly assigned into 4 groups (3 replicates per group, and 5 lambs per replicate). The control group received a basal diet, and the other groups received diets supplemented with 0.10% NCG, 0.06% RP-Met, 0.10%NCG and 0.06% RP-Met in the basal diet, respectively. The experiment lasted for 100 days. The results showed that compared with the control group, the average daily gain, carcass weight and slaughter rate of Tan lambs were significantly improved in the experimental groups (P<0.05); compared with NCG and RP-Met groups, the average daily gain in NRM group was significantly increased (P<0.05), and the bone weight to carcass weight ratio, serum urea nitrogen and total cholesterol contents were significantly reduced (P<0.05). In conclusion, the combination of 0.10% NCG and 0.06% RP-Met in diets can significantly improve the growth, slaughter performance and serum biochemical parameters of Tan lambs, and the effect is better than that of 0.10% NCG or 0.06% RP-Met supplementation alone.

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