不同磷源对育肥猪生长性能、血清指标、骨骼钙和磷代谢以及肠道微生物的影响  

Effects of Different Phosphorus Sources on Growth Performance,Serum Indices,Bone Calcium and Phosphorus Metabolism and Intestinal Microbes of Finishing Pigs

作　　者：刘景[1] 陈炳钿[1] 何姝颖 邱华玲[1] 缪伏荣[1] 董志岩[1] 李忠荣[1] 方桂友[1] 叶鼎承[1] 陈卓 陈鑫珠[1,4] LIU Jing;CHEN Bingdian;HE Shuying;QIU Hualing;MIAO Furong;DONG Zhiyan;LI Zhongrong;FANG Guiyou;YE Dingcheng;CHEN Zhuo;CHEN Xinzhu(Animal Husbandry and Veterinary Medicine Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350013,China;Sinochem Yunlong Co.,Ltd.,Chengdu 655204,China;School of Business Administration,Fujian College of Commerce,Fuzhou 350016,China;Postdoctoral Workstation of Fujian Xinminke Biology Science and Technology Development Co.,Ltd.,Fuzhou 350008,China)

机构地区：[1]福建省农业科学院畜牧兽医研究所,福州350013 [2]中化云龙有限公司,成都655204 [3]福建商学院工商管理学院,福州350016 [4]福建省新闽科生物科技开发有限公司博士后工作站,福州350008

出　　处：《动物营养学报》2022年第1期104-114,共11页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：省属公益类科研院所(2019R1026-14);省属公益类科研院所(2019R1026-1);“5511”协同创新工程项目(XTCXGC2021012)。

摘　　要：本试验旨在研究不同磷源对育肥猪生长性能、血清指标、骨骼钙和磷代谢以及肠道微生物的影响。试验选用640头健康的、遗传背景一致、初始体重为(63.10±2.32)kg的“杜×长×大”三元杂交猪,随机分为5个组,每组8个重复,每个重复16头(公母各占1/2)。对照组饲喂基础饲粮,磷源为磷酸氢钙(DCP);试验1组磷源为磷酸一二钙(MDCP),其中MDCP提供的磷水平为对照组DCP提供磷水平的80%;试验2组磷源为MDCP,其中MDCP提供的磷水平为对照组DCP提供磷水平的60%;试验3组磷源为磷酸二氢钙(MCP),其中MCP提供的磷水平为对照组DCP提供磷水平的80%;试验4组磷源为MCP,其中MCP提供的磷水平为对照组DCP提供磷水平的60%。试验期共90 d,其中预试期10 d、正试期80 d。结果显示:1)与对照组相比,试验1组和试验4组育肥猪终末体重显著提高(P<0.05),试验1组平均日增重和试验2组磷表观消化率显著提高(P<0.05)。2)与对照组相比,各试验组育肥猪肌肉、肝脏和血清胰岛素样生长因子-Ⅰ(IGF-Ⅰ)含量均显著提高(P<0.05),肌肉和血清生长激素(GH)含量均显著提高(P<0.05),其中试验3组和试验4组肌肉IGF-Ⅰ和GH含量显著高于试验1组和试验2组(P<0.05);试验2组肌肉IGF-Ⅰ相对表达量显著提高(P<0.05),试验3组肝脏IGF-Ⅰ相对表达量显著降低(P<0.05),试验4组肌肉GH相对表达量显著高于试验3组(P<0.05)。3)不同磷源对育肥猪各段肠道的微生物种类和数量均有一定的影响,其中空肠和回肠的微生物多样性增加,特别是空肠新增菌属较多,而盲肠微生物较稳定。由此可见,饲粮选用MDCP或MCP替代DCP来补充磷源,并以80%或60%为替代比例,在一定程度上能够提高育肥猪的生长性能,增加肠道微生物的多样性,是替代DCP的良好磷源。This experiment was conducted to study the effects of different phosphorus sources on growth performance,serum indices,bone calcium and phosphorus metabolism and intestinal microbes of finishing pigs.A total of 640 healthy“Duroc×Landrace×Yorkshire”crossbred pigs with the same genetic background and initial body weight of(63.10±2.32)kg were randomly divided into 5 groups with 8 replicates per group and 16 pigs(half male and half female)per replicate.The control group was fed a basal diet,and the phosphorus source was calcium hydrogen phosphate(DCP);the phosphorus source in experimental group 1 was mono-dicalcium phosphate(MDCP),and the level of phosphorus provided by MDCP was 80%of that provided by DCP in the control group;the phosphorus source in experimental group 2 was MDCP,and the level of phosphorus provided by MDCP was 60%of that provided by DCP in the control group;the phosphorus source in experimental group 3 was monocalcium phosphate(MCP),and the level of phosphorus provided by MCP was 80%of that provided by DCP in the control group;the phosphorus source in experimental group 4 was MCP,and the level of phosphorus provided by MCP was 60%of that provided by DCP in the control group.The experiment lasted for 90 days,including a pre-experiment period of 10 days and a formal experiment period of 80 days.The results showed as follows:1)compared with the control group,the final body weight of finishing pigs in experimental groups 1 and 4 was significantly increased(P<0.05),the average daily gain in experimental group 1 and the apparent phosphorus digestibility in experimental group 2 were significantly increased(P<0.05).2)Compared with the control group,the insulin-like growth factor-Ⅰ(IGF-Ⅰ)content in muscle,liver and serum of finishing pigs in experimental groups was significantly increased(P<0.05),and the growth hormone(GH)content in muscle and serum was also significantly increased(P<0.05).And the contents of IGF-Ⅰand GH in muscle in experimental groups 3 and 4 were significantly higher than tho

关 键 词：磷酸二氢钙 磷酸一二钙 育肥猪 生长性能 血清指标 钙磷代谢 肠道微生物 

分 类 号：S828[农业科学—畜牧学]