饲粮中添加包被半胱胺和包被甜菜碱对苏姜猪脂质代谢和脂肪沉积的影响  

Effects of Dietary Supplementation with Coated Cysteamine and Coated Betaine on Lipid Metabolism and Fat Deposition in Sujiang Pigs

作　　者：倪黎纲[1] 徐盼[1] 张亚琴 张伟 张君胜[1] 朱淑斌[1] 高慧珍 赵旭庭[1] NI Ligang;XU Pan;ZHANG Yaqin;ZHANG Wei;ZHANG Junsheng;ZHU Shubin;GAO Huizhen;ZHAO Xuting(College of Animal Science and Technology,Jiangsu Agri-Animal Husbandry Vocational College,Taizhou 225300,China;Jiangsu Jiangquhai Pig Seed Co.,Ltd.,Taizhou 225300,China)

机构地区：[1]江苏农牧科技职业学院动物科技学院,泰州225300 [2]江苏姜曲海猪种业有限公司,泰州225300

出　　处：《动物营养学报》2025年第3期1550-1559,共10页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：江苏现代农业(生猪)产业技术体系项目(JATS[2023]352);江苏省种业振兴揭榜挂帅项目(JBGS[2021]028);泰州市311高层次人才培养专项(TZRC2023136)。

摘　　要：本试验旨在研究饲粮中添加包被半胱胺(CCS)和包被甜菜碱(CBet)对育肥期苏姜猪脂质代谢和脂肪沉积的影响。选取54头同批次苏姜猪,体重为(60.0±3.0)kg,随机分为3组(每组3个重复,每个重复6头):对照组饲喂基础饲粮,CCS组在基础饲粮中添加200 mg/kg的CCS,CBet组在基础饲粮中添加1250 mg/kg的CBet。预试期为7 d,正试期为50 d。结果表明:1)与对照组相比,CCS组和CBet组的背膘厚和板油重显著降低(P<0.05),瘦肉率显著提高(P<0.05);血清中总蛋白(TP)含量显著提高(P<0.05),甘油三酯(TG)和总胆固醇(TC)含量显著降低(P<0.05),胰岛素(INS)含量显著或极显著降低(P<0.01或P<0.05);背膘和肝脏组织中乙酰辅酶A羧化酶(ACC)及脂肪酸合成酶(FASN)的mRNA相对表达量显著下调(P<0.05),过氧化物酶体增殖物激活受体α(PPARα)的mRNA相对表达量显著上调(P<0.05)。2)与对照组相比,CBet组的肌内脂肪(IMF)含量显著提高(P<0.05),背膘组织中脂肪酸转运蛋白1(FATP1)的mRNA相对表达量显著上调(P<0.05),背膘组织中甘油三酯脂酶(ATGL)的mRNA表达量显著下调(P<0.05)。由此可见,饲粮中添加CCS或CBet均能通过改变激素分泌和脂质代谢相关基因的表达来提高苏姜猪体内的脂质代谢能力,降低脂肪合成和沉积;另外,饲粮中添加CBet还能提高苏姜猪的IMF含量,改善猪肉品质。This experiment was conducted to investigate the effects of dietary supplementation with coated cysteamine(CCS)and coated betaine(CBet)on lipid metabolism and fat deposition in Sujiang pigs during the fattening period.Fifty-four Sujiang pigs from the same batch,each weighing(60.0±3.0)kg,were randomly assigned to 3 groups with 3 replicates per group and 6 pigs per replicate.Pigs in control group were fed a basal diet,pigs in CCS group were fed the basal diet supplemented with 200 mg/kg CCS,and pigs in CBet group were fed the basal diet supplemented with 1250 mg/kg CBet.The pre-trial period lasted for 7 days and the formal experimental period lasted for 50 days.The results showed as follows:1)compared with the control group,both the CCS and CBet groups had significantly reduced backfat thickness and leaf-fat weight(P<0.05),and had a significantly increased lean meat rate(P<0.05);serum total protein(TP)content was also significantly increased(P<0.05),while the contents of triglyceride(TG)and total cholesterol(TC)were significantly reduced(P<0.05),and the content of insulin(INS)was significantly or extremely significantly reduced(P<0.01 or P<0.05);additionally,the mRNA relative expression levels of acetyl-CoA carboxylase(ACC)and fatty acid synthase(FASN)in backfat and liver tissues were significantly down-regulated(P<0.05),while the mRNA relative expression levels of peroxisome proliferator-activated receptor α(PPARα)was significantly up-regulated(P<0.05).2)Compared with the control group,the intramuscular fat(IMF)content of the CBet group was significantly increased(P<0.05),and the mRNA relative expression level of fatty acid transporter 1(FATP1)in backfat tissue was also significantly up-regulated(P<0.05),while the mRNA relative expression level of triglyceride lipase(ATGL)in backfat tissue was significantly decreased(P<0.05).In conclusion,adding either CCS or CBet to the diet can improve lipid metabolism capacity of Sujiang pigs,and reduce fat synthesis and deposition by altering hormone secretion and the expre

关 键 词：包被半胱胺 包被甜菜碱 苏姜猪 脂质代谢 脂肪沉积 

分 类 号：S828[农业科学—畜牧学]