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

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.

Cite this article

LI Yinzhu , CHAO Yalin , KOU Qifang , NIU Wenzhi , ZHANG Guijie . Effects of N-Carbamyl Glutamate and Rumen Protected Methionine on Growth Performance, Slaughter Performance and Serum Biochemical Parameters of Tan Lambs[J]. Chinese Journal of Animal Nutrition, 2020 , 32(8) : 3927 -3933 . DOI: 10.3969/j.issn.1006-267x.2020.08.051

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