营养水平对贵州香猪肉质性状及H-FABP基因表达的影响  

Effects of nutrition levels on meat quality traits and heart fatty acid-binding protein gene expression in Guizhou miniature pigs

作　　者：曹龙凯[1] 郭春华[1] 汤丽琳[2] 施晓丽[2] 赵微[2] 

机构地区：[1]西南民族大学生命与技术学院,四川成都610041 [2]贵州大学动物科学学院,贵州贵阳550000

出　　处：《西南民族大学学报（自然科学版）》2012年第3期378-382,共5页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：黔省专合字(2008)9号

摘　　要：将24头起始重为10kg左右的贵州香猪(公母各半)随机分为4个处理组,以能量和蛋白为试验因子,采用2×2因子设计,研究日粮能量(DE13.3MJ/kg和DE11.8MJ/kg)和蛋白质(17%和14%)水平对贵州香猪肉质性状及H-FABP基因表达的影响.结果表明:营养水平对10～20kg贵州香猪的采食量的影响不显著(P>0.05),低能量或低蛋白水平有降低日增重和饲料报酬的趋势,但差异不显著;降低(能量或蛋白)营养水平提高H-FABP基因的表达量(P<0.01)和肌内脂肪含量,增加肌肉嫩度(P<0.01或P<0.05);H-FABP基因的表达量与肌内脂肪的含量呈正相关(P<0.01).因此,营养水平影响肌内脂肪代谢和H-FABP基因的表达量.Intramuscular fat content is generally associated with sensory quality and acceptability of fresh pork. This study is conducted with the RT-PCR method to determine effects of nutrition levels on heart fatty acid-binding protein （H-FABP） gene expression and fatty metabolism in muscle in Guizhou miniature pig. A total of 24 Guizhou miniature pigs （male and female half） are randomly divided into four treatment groups, using a 2×2 factorial design to study the effects of dietary energy （DE13.3MJ/kg and DE11.8MJ/kg） and protein （17% and 14%） levels on meat quality traits and H-FABP gene expression in Guizhou miniature pig. The results indicate that the feed intake of 10-20kg Guizhou miniature pig among the four groups is not different （P〉0.05）. The low energy or low protein levels decreases daily gain and feed conversion rate, but the difference is not significant. The H-FABP gene expression （P〈0.01）, intramuscular fat content （P〈0.05） and muscle tenderness （P〈0.01） are increased for pigs fed high energy or high protein level. The relationship between H-FABP gene expression and intramuscular fat content is positive（P〈0.01）. It is concluded that H-FABP gene expression and fatty metabolism in muscle are affected by dietary nutritional level.

关 键 词：贵州香猪 营养水平 肉质性状 H-FABP 

分 类 号：S815[农业科学—畜牧学]