RUMINANT AND HERBIVORE NUTRITION AND FEED

Effects of Diets with Different Proportions of Thymus quinquecostatus on Growth Performance, Slaughter Performance and Meat Quality of Tan Sheep

  • MA Xiaoming ,
  • WU Jianping ,
  • LI Jucai ,
  • LANG Xia ,
  • DING Wei ,
  • SUN Wenyang ,
  • WANG Xiuqin
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  • 1. College of Animal Science and Technology Gansu Agricultural University, Lanzhou 730070, China;
    2. Institute of Animal Science, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China;
    3. Gansu Academy of Agricultural Sciences, Lanzhou 730000, China

Received date: 2021-04-08

  Online published: 2021-11-10

Supported by

 

Abstract

This experiment was conducted to investigate the effects of diets with different proportions of Thymus quinquecostatus on growth performance, slaughter performance and meat quality of Tan sheep. Forty-five Tan lambs with the body weight of (22.0±3.0) kg were randomly divided into 3 groups with 15 sheep (8 male lambs and 7 female lambs) in each group according to a single factor experimental design. Sheep in the control group were fed a basal diet, the others in the test groups 1 and 2 were fed the basal diet supplemented with 5% and 10% Thymus quinquecostatus, respectively. The pre-test lasted for 10 days, and the trial period lasted for 42 days. The results showed as follows:1) there were no significant differences in growth performance and slaughter performance of Tan sheep among 3 groups (P>0.05). 2) The water-holding capacity of longissimus dorsi muscle of Tan sheep in test group 2 was extremely significantly higher than that in control group (P<0.01), and the cooked meat rate was significantly higher than that in control group (P<0.05). 3) The contents of most amino acids in longissimus dorsi muscle of Tan sheep in test group 1 was significantly or extremely significantly higher than those in control group (P<0.05 or P<0.01). 4) The contents of C8:0 and C16:0 in longissimus dorsi muscle of Tan sheep in test group 1 was significantly lower than that of control group (P<0.05), and the ratio of n-6 polyunsaturated fatty acids (PUFA) to n-3 PUFA in test group 1 was more rational than control group. In summary, diets supplemented with 10% Thymus quinquecostatus can improve the meat quality of Tan sheep, and diets with 5% Thymus quinquecostatus can improve the meat nutritional value and flavor of Tan sheep.

Cite this article

MA Xiaoming , WU Jianping , LI Jucai , LANG Xia , DING Wei , SUN Wenyang , WANG Xiuqin . Effects of Diets with Different Proportions of Thymus quinquecostatus on Growth Performance, Slaughter Performance and Meat Quality of Tan Sheep[J]. Chinese Journal of Animal Nutrition, 2021 , 33(11) : 6223 -6232 . DOI: 10.3969/j.issn.1006-267x.2021.11.023

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