两种杂交组合猪肉品质比较  

Comparison of Pork Quality Between Two Hybrid Combinations

作　　者：李贞明 余苗 马现永 容庭 孟繁明 李宝红 张洁 李剑豪 LI Zhenming;YU Miao;MA Xianyong;RONG Ting;MENG Fanming;LI Baohong;ZHANG Jie;LI Jianhao(Institute of Animal Science/Guangdong Academy of Agricultural Sciences/State Key Laboratory of Livestock and Poultry Breeding/Key Laboratory of Animal Nutrition and Feed Science in South China,Ministry of Agriculture and Rural Affairs/Guangdong Public Laboratory of Animal Breeding and Nutrition,Guangzhou 510640,China;Qingyuan Longfa Pig Breeding Co.,Ltd,Yingde 511500,China)

机构地区：[1]广东省农业科学院动物科学研究所/畜禽育种国家重点实验室/农业农村部华南动物营养与饲料重点实验室/广东省畜禽育种与营养研究重点实验室,广东广州510640 [2]清远市龙发种猪有限公司,广东英德511500

出　　处：《广东农业科学》2020年第5期80-86,共7页Guangdong Agricultural Sciences

基　　金：广州市科技计划重点项目(201707020007);广东省畜禽育种与营养研究重点实验室开放运行项目(2017B030314044);广东省现代农业产业技术体系创新团队项目(2017LM1080);清远市创新创业科研团队项目(2018002);英德市科技计划项目(JHXM2019024)。

摘　　要：【目的】比较杜洛克公猪与藏香母猪的二元杂交组合猪(简称杜藏猪,DZ)和杜耳母猪(杜洛克公猪与小耳花母猪的后代)与藏香公猪的三元杂交组合猪(简称藏杜耳猪,ZDE)的肉品质差异。【方法】于10月龄,禁食12 h后,分别挑选8头(公母各半)进行屠宰取样,测定其胴体品质和肉质性状以及肌肉中肌内脂肪、肌苷酸、脂肪酸和氨基酸的含量。【结果】(1)DZ猪和ZDE猪的胴体品质无显著差异。(2)与ZDE猪相比,DZ猪肌肉的pH45 min值显著提高了4.19%;而L*24 h值和剪切力分别显著降低了6.26%和17.61%。(3)与ZDE猪相比,DZ猪肌肉中肌内脂肪和肌苷酸的含量分别显著提高了121.59%和40.88%。(4)与ZDE猪相比,DZ猪肌肉中亚麻酸和二十碳二烯酸含量分别显著降低了21.05%和33.33%;而二十碳烯酸显著提高了33.71%。(5)与ZDE猪相比,DZ猪肌肉中蛋氨酸、苏氨酸、谷氨酸、丝氨酸和酪氨酸的含量分别显著提高了58.71%、45.94%、176.94%、36.87%和48.02%,且DZ猪肌肉中总氨基酸、总必需氨基酸和总非必需氨基酸的含量分别显著提高了22.65%、16.78%和24.51%。【结论】杜洛克公猪与藏香母猪的二元杂交组合猪具有更优的肉品质和营养价值。【Objective】Two-way crossbred pigs(DZ)of Duroc boars and Tibetan sowsand three-way crossbred pigs(ZDE)of Du'er sows(offspring of Duroc boars and small-ear spotted sows)and Tibetan boarswere used to compare the difference of meat quality.【Method】At the age of 10 months,after fasting for 12 hours,8 heads(4 males and 4 females)were selected for slaughtering and sampling,and the carcass quality and meat quality traits as well as intramuscular fat,inosinic acid,fatty acid and amino acid contents were measured.【Result】The results showed that:(1)there was no significant difference in carcass quality between DZ and ZDE.(2)Compared with ZDE,the pH45min value of muscle in DZ increased by 4.19%(P<0.05),while the L*24h value and shear force decreased by 6.26%and 17.61%,respectively(P<0.05).(3)Compared with ZDE,the contents of intramuscular fat and inosinic acid in muscle of DZ increased by 121.59%and 40.88%,respectively(P<0.05).(4)Compared with ZDE,linolenic acid and eicosadienoic acid in muscle of DZ decreased by 21.05%and 33.33%,respectively(P<0.05),while eicosenoic acid increased by 33.71%(P<0.05).(5)Compared with ZDE,the contents of methionine,threonine,glutamic acid,serine and tyrosine in muscle of DZ increased by 58.71%,45.94%,176.94%,36.87%and 48.02%,respectively(P<0.05),and the contents of total amino acids,total essential amino acids and total non-essential amino acids in muscle of DZ increased by 22.65%,16.78%and 24.51%,respectively(P<0.05).【Conclusion】It can be concluded that the crossbred pigs of Duroc boars and Tibetan sows have better meat quality and nutritional value.

关 键 词：藏香猪 杜洛克猪 小耳花猪 二元杂交猪 三元杂交猪 肉品质 

分 类 号：S828.8[农业科学—畜牧学]