Effects of Rumen-Bypass Methionine on Growth Performance, Slaughter Performance and Meat Quality of Stabling Tan Sheep

ZHOU Yuxiang, WANG Meng, LI Zuoming

doi:10.3969/j.issn.1006-267x.2018.12.024

2018 , Vol. 30 >Issue 12: 4964 - 4970

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.12.024

Molecular Nutrition

Effects of Rumen-Bypass Methionine on Growth Performance, Slaughter Performance and Meat Quality of Stabling Tan Sheep

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1. College of Agriculture, Ningxia University, Yinchuan 750021, China;
2. Ningxia Luning Small Tail Hai Sheep Farm, Yinchuan 750200, China

Received date: 2018-06-03

Online published: 2018-12-19

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Abstract

This experiment was conducted to study the effects of adding rumen-bypass methionine into diets on growth performance, slaughter performance and meat quality of stabling Tan sheep, and aimed to develop additive for providing scientific and reliable theoretical basis for production of high-grade mutton. Twenty Tan sheep, which had a good condition and a similar age and body weight, were randomly divided into five groups, and each group had four sheep. Each of sheep was raised in a single cage. The ratios of concentrate to roughage in the diets of sheep in five groups were all 3:7, and the roughage was constituted by 40% buckwheat hay straw (treated by cellulase) and 60% corn silage. The diets of trail Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ groups were added 0 (control group), 1.5, 3.0, 4.5 and 6.0 g/d rumen-bypass methionine into a basal diet for each sheep, respectively. Pretrial period was 10 d, and trial period was 60 d. The measured indexes included growth performance, slaughter performance, physicochemical indexes of mutton and edible quality indexes of mutton. The results showed as follows: compared with the control group, diet added 4.5 g/(d·sheep) rumen-bypass methionine was benefit to improve the daily gain (P>0.05), and could significantly decrease the feed/gain (P<0.05); diet added 6.0 g/(d·sheep) rumen-bypass methionine could significantly increase the carcass fat weight (P<0.05), and significantly decrease the drip loss of mutton (P<0.05); diet added 6.0 g/(d·sheep) rumen-bypass methionine 4.5 g/(d·sheep) rumen-bypass methionine decreased the shear force of mutton (P>0.05). It is concluded that the addition of 4.5 to 6.0 g/d for each sheep can increase daily gain, decrease feed/gain and improve meat quality of stabling Tan sheep.

Key words： Tan sheep; rumen-bypass methionine; growth performance; slaughter performance; meat quality

Cite this article

ZHOU Yuxiang, WANG Meng, LI Zuoming . Effects of Rumen-Bypass Methionine on Growth Performance, Slaughter Performance and Meat Quality of Stabling Tan Sheep[J]. Chinese Journal of Animal Nutrition, 2018 , 30(12) : 4964 -4970 . DOI: 10.3969/j.issn.1006-267x.2018.12.024

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