免疫去势和手术去势方法对猪肉中氨基酸、肌苷酸和脂肪酸含量的影响  

A Comparison of the Effects of Two Different Castration Methods on the Contents of Amino Acids,inosine monophosphate and Fatty Acids in Pork

作　　者：袁亚利[1,2] 李蛟龙[1,2] 张卫辉[1,2] 李超[1,2] 高峰[1,2] 周光宏[2] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095 [2]南京农业大学教育部肉品加工与质量控制重点实验室,江苏南京210095

出　　处：《肉类研究》2011年第6期5-8,共4页Meat Research

摘　　要：为探索公猪异味控制疫苗对猪肉氨基酸、肌苷酸和脂肪酸含量的影响,实验选用400头健康三元(杜洛克×长白×大白)体质量相近的仔公猪,随机分成2组:手术去势组和异普克免疫组(免疫去势组),每组10个重复,每个重复20头。饲养25周龄后,对猪称质量,选用40头猪进行屠宰。取背最长肌测定氨基酸、肌苷酸和脂肪酸含量。结果表明:公猪异味控制疫苗对猪肉必需氨基酸占氨基酸总量的比例和鲜味氨基酸占氨基酸总量的比例没有显著影响(P>0.05),肌苷酸含量显著高于手术去势组(P<0.05),总饱和脂肪酸和单不饱和脂肪酸与手术去势组差异不显著(P>0.05),但总多不饱和脂肪酸显著高于手术去势组(P<0.01)。因此,与手术去势猪相比,公猪异味控制疫苗可使免疫公猪肌肉肌苷酸含量和多不饱和脂肪酸含量显著提高,进而改善肉质。The objective of this study was to explore the effect of GnRF （gonadotropin-releasmg tactor） vaccine on me contents of amino acids, inosine monophosphate （IMP） and fatty acids of pork. A total of 400 healthy male piglets （Large White × Landrace × Duroc, with similar body weight） were randomized into 2 groups with 10 replicates of 20 piglets per group： GnRFtreated （immunocastration） group and surgical castration group. After 25 weeks of feeding, all piglets were weighed, and longissimus muscles were taken to determine the contents of amino acids, IMP and fatty acids. GnRF vaccination had no significant effect on the essential to total amino acids ratio and tasty to total amino acids ratio of pork （P 〉 0.05）. A significantly higher IMP content was observed for GnRF-treated group as compared to surgical castration group. The two groups did not significantly differ in the contents of total saturated fatty acids and total monounsaturated fatty acids （P 〉 0.05）, but GnRF-treated group exhibited a significantly higher total polyunsaturated fatty acid content （P 〈 0.01）. In conclusion, compared to surgical castration, GnRF vaccination can result in a higher increase in the contents of IMP and total polyunsaturated fatty acid in longissimus muscles, thereby improving meat quality.

关 键 词：猪 公猪异味控制疫苗 氨基酸 肌苷酸 脂肪酸 

分 类 号：S828.91[农业科学—畜牧学]