动物营养学报 >

2021 , Vol. 33 >Issue 6: 3380 - 3388

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.06.039

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

不同精粗比饲粮对贵州白山羊肌肉营养组成的影响

  • 卢盛勇 ,
  • 陈胜昌 ,
  • 李景上 ,
  • 李海霞 ,
  • 蔡运策 ,
  • 陈祥 ,
  • 洪磊
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  • 1. 贵州大学动物科学学院动物营养与饲料研究所, 贵阳 550025;
    2. 贵州大学高原山地动物遗传育种与繁殖教育部重点实验室, 贵阳 550025
卢盛勇(1994-),男,贵州安顺人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:3239245713@qq.com

收稿日期: 2020-11-26

  网络出版日期: 2021-06-10

基金资助

贵州省科技重大专项资助项目（黔科合重大专项字[2016]3002号）

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Effects of Diets with Different Concentrate to Roughage Ratios on Muscle Nutritional Composition of Guizhou White Goats

  • LU Shengyong ,
  • CHEN Shengchang ,
  • LI Jingshang ,
  • LI Haixia ,
  • CAI Yunce ,
  • CHEN Xiang ,
  • HONG Lei
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  • 1. Animal Nutrition and Feed Research Institute, College of Animal Science, Guizhou University, Guiyang 550025, China;
    2. Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, China

Received date: 2020-11-26

  Online published: 2021-06-10

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摘要

本试验旨在探索不同精粗比饲粮对贵州白山羊背最长肌中常规营养成分、氨基酸、脂肪酸等营养成分含量的影响。试验选择体况健康、体重[（15.96±2.94）kg]相近的育肥阶段白山羊36只，采用单因素随机区组设计，随机分为4组，每组9个重复，每个重复1只羊，分别饲喂精粗比为30：70、40：60、50：50、60：40的饲粮，预试期7 d，正试期60 d。正式期结束后屠宰，每只羊采集背最长肌500 g进行相关指标测定。结果显示：50：50组和60：40组水分含量显著高于30：70组和40：60组（P<0.05），60：40组粗脂肪含量显著高于30：70组（P<0.05），30：70组粗蛋白质含量显著高于50：50组和60：40组（P<0.05）。50：50组精氨酸含量显著低于60：40组（P<0.05），60：40组必需氨基酸、鲜味氨基酸和总氨基酸含量最高，30：70组甜味氨基酸/总氨基酸最高。40：60组棕榈酸含量显著低于其他组（P<0.05），30：70组和40：60组硬脂酸含量显著高于50：50组和60：40组（P<0.05），30：70组棕榈油酸含量显著低于50：50组和60：40组（P<0.05），30：70组和40：60组油酸含量显著低于60：40组（P<0.05），30：70组二十碳烯酸含量显著低于60：40组（P<0.05），30：70组反亚油酸、亚油酸和二十碳三烯酸含量显著低于其他组（P<0.05），30：70组和40：60组α-亚麻酸含量显著低于50：50组和60：40组（P<0.05），60：40组二十碳二烯酸含量显著低于其他组（P<0.05），30：70组饱和脂肪酸含量最高，60：40组单不饱和脂肪酸、不饱和脂肪酸和总脂肪酸含量最高。综上可知，饲粮精粗比为60：40时贵州白山羊肌肉粗脂肪含量高，氨基酸和脂肪酸含量丰富，肌肉的多汁性、风味及品质好，营养价值高。

关键词： 贵州白山羊; 精粗比; 氨基酸; 脂肪酸

本文引用格式

卢盛勇 , 陈胜昌 , 李景上 , 李海霞 , 蔡运策 , 陈祥 , 洪磊 . 不同精粗比饲粮对贵州白山羊肌肉营养组成的影响[J]. 动物营养学报, 2021 , 33(6) : 3380 -3388 . DOI: 10.3969/j.issn.1006-267x.2021.06.039

Abstract

The aim of this experiment was to explore the effects of diets with different concentrate to roughage ratios on the contents of nutrients such as routine nutrients, amino acids and fatty acids in the longissimus dorsi of Guizhou white goats. Thirty-six healthy fattening goats with similar body weight[(15.96±2.94) kg] were randomly divided into 4 groups with 9 replicates in each group and 1 goat in each replicate. They were fed diets with concentrate to roughage ratio of 30:70, 40:60, 50:50 and 60:40, respectively. The pre feeding period was 7 days and the formal period was 60 days. All goats were slaughtered after formal period, and 500 g longissimus dorsi was sampled from each goat to determine the relative indexes. The results showed that the moisture content of 50:50 and 60:40 groups was significantly higher than that of 30:70 and 40:60 groups (P<0.05), the ether extract content of 60:40 group was significantly higher than that of 30:70 group (P<0.05), and the crude protein content of 30:70 group was significantly higher than that of 50:50 and 60:40 groups (P<0.05). The arginine content of 50:50 group was significantly lower than that of 60:40 group (P<0.05), the contents of essential amino acids, delicious amino acids and total amino acids were the highest of 60:40 group, and the sweet amino acids/total amino acids was the highest of 30:70 group. The palmitic acid content of 40:60 group was significantly lower than that in each groups (P<0.05), the stearic acid content of 30:70 and 40:60 groups was significantly higher than that of 50:50 and 60:40 groups (P<0.05), the palmitoleic acid content of 30:70 group was significantly lower than that of 50:50 and 60:40 groups (P<0.05), the oleic acid content of 30:70 and 40:60 groups was significantly lower than that of 60:40 group (P<0.05), the eicosaccharide dilute acid content of 30:70 group was significantly lower than that of 60:40 group (P<0.05), the linolelaidic acid, linoleic acid and eicosatrienoic acid contents of 30:70 group was significantly lower than those of other groups (P<0.05), the α-linolenic acid content of 30:70 and 40:60 groups was significantly lower than that of 50:50 and 60:40 groups (P<0.05), the eicosarboxylic acid content of 60:40 was significantly lower than that of other groups (P<0.05), the saturated fatty acids content was the highest of 30:70 group, and the contents of monounsaturated fatty acids, unsaturated fatty acids and total fatty acids were the highest of 60:40 group. Base on the above results, when dietary concentrate to roughage ratio is 60:40, the content of ether extract in muscle of Guizhou white goats is high, the contents of amino acids and fatty acids are rich, the meat is juicy and flavor, the meat quality is good, and the nutritional value is high.

Key words： Guizhou white goats; concentrate to roughage ratio; amino acids; fatty acids

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