不同性别苏尼特羊屠宰性能与肉品质研究

doi:10.16431/j.cnki.1671-7236.2020.10.021

摘要/Abstract

摘要： 本试验旨在研究性别对苏尼特羊屠宰性能和肉品质的影响。从苏尼特左旗改良站种羊场放牧群中选取体况相同、6月龄苏尼特羊24只（公母各半），测定其屠宰性能和肉品质。屠宰试验结果显示，公羊骨重和骨肉比显著高于母羊（P<0.05），母羊净肉重和净肉率则显著高于公羊（P<0.05）。肉质性状测定结果表明，苏尼特母羊的滴水损失显著低于苏尼特公羊（P<0.05），其余指标则差异不显著（P>0.05）。肌肉常规营养成分结果表明，公羊肌内水分含量显著高于母羊（P<0.05），母羊粗脂肪含量则显著高于公羊（P<0.05），其他指标差异不显著（P>0.05）。氨基酸测定结果表明，苏尼特母羊肌肉必需氨基酸比率显著高于公羊（P<0.05），形成肉品香味的前体氨基酸含量在公母羊间无显著差异（P>0.05）。不同部位脂肪酸含量测定结果表明，公羊皮下脂肪中饱和脂肪酸比率显著低于母羊（P<0.05），肌内脂肪和尾脂中饱和脂肪酸比率公母羊差异不显著（P>0.05）；母羊尾脂中单不饱和脂肪酸比率显著高于公羊（P<0.05），皮下脂肪和肌间脂肪中单不饱和脂肪酸比率在公母羊间差异不显著（P>0.05）；公羊肌内脂肪中多不饱和脂肪酸比率显著高于母羊（P<0.05），而在皮下脂肪和尾脂中多不饱和脂肪酸含量在公母羊间差异不显著（P>0.05）。综上所述，性别对6月龄苏尼特羊屠宰性能和肉品质均有一定影响。

关键词: 苏尼特羊; 屠宰性能; 肉品质; 氨基酸; 脂肪酸

Abstract: The purpose of this experiment was to study the effect of gender on the slaughter performance and meat quality of Sunite sheep.Twelve 6-month-old Sunite rams and ewes at the same body condition were selected from the grazing herds of the Sunite Zuoqi Improvement Station Breeding Farm to determine their slaughter performance and meat quality.The slaughter test results showed that the bone quality and bone-meat ratio of the rams were significantly higher than that of the ewes (P<0.05),and the net meat quality and net meat rate of the ewes were significantly higher than that of the rams (P<0.05).The results of meat quality traits showed that the drip loss of ewes were significantly lower than that of rams (P<0.05),and the other indicators were not significantly different (P>0.05).The results of conventional nutrient composition of muscles showed that the intramuscular moisture content of the rams were significantly higher than that of the ewes (P<0.05),and the intramuscular fat content of the ewes were significantly higher than that of the rams (P<0.05),while the other indicators were not significantly different (P>0.05).The results of amino acid determination showed that the essential amino acid ratio in muscle of sunite ewes were significantly higher than that of rams (P<0.05),but there was no significant difference between the rams and ewes that formed the precursor amino acid content of meat flavor (P>0.05).Fatty acid measurement results showed that the saturated fatty acid ratio in the subcutaneous fat of rams was significantly lower than that of ewes (P<0.05).There was no significant difference in the ratio of saturated fatty acids in muscle fat and tail fat (P>0.05);The ratio of monounsaturated fatty acids in ewes tail fat was significantly higher than that of rams (P<0.05).The ratio of monounsaturated fatty acids in subcutaneous fat and intermuscular fat was not significantly different between rams and ewes (P>0.05).The ratio of polyunsaturated fatty acids in intermuscular fat of rams was significantly higher than that of ewes (P<0.05),and there was no significant difference in the content of polyunsaturated fatty acids in subcutaneous fat and tail fat (P>0.05).In summary,it showed that gender had a certain influence on the slaughter performance and meat quality of 6-month-old Sunite sheep.

Key words: Sunite sheep; slaughter performance; meat quality; amino acids; fatty acids

中图分类号:

S826.9

冀祥, 高爱琴, 李卿, 高栋. 不同性别苏尼特羊屠宰性能与肉品质研究[J]. 中国畜牧兽医, 2020, 47(10): 3224-3231.

JI Xiang, GAO Aiqin, LI Qing, GAO Dong. The Effect of Gender on Slaughtering Performance and Meat Quality in Sunite Sheep[J]. China Animal Husbandry and Veterinary Medicine, 2020, 47(10): 3224-3231.

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