夏季高温时蛋白质和赖氨酸水平对泌乳母猪生产性能及粪氮排泄量的影响  

Effect of dietary protein and lysine levels on productive performance and N excretion of lactating sows in summer

作　　者：方桂友[1] 周万胜 邱华玲[1] 董志岩[1] 刘景[1] Fang Guiyou;Zhou Wansheng;Qiu Hualing;Dong Zhiyan;Liu Jing(Institute of Animal Husbandry and Veterinary Medicine,Fujian Agricultural Academy of Science,Fuzhou 3500;Nanping City HuiRi Animal Husbandry Co.LTD.,Nanping Fujian 353013)

机构地区：[1]福建省农业科学院畜牧兽医研究所,福州350013 [2]南平市辉日牧业有限公司,福建南平353013

出　　处：《福建畜牧兽医》2018年第2期3-7,共5页Fujian Journal of Animal Husbandry and Veterinary medicine

基　　金：福建省科技计划项目(2016S0051)资助

摘　　要：试验旨在研究夏季高温时不同蛋白质和赖氨酸水平对泌乳母猪生产性能和粪氮排泄量的影响。试验采用2×3因子设计,蛋白质水平为18%和15.5%,可消化赖氨酸水平为0.93%、0.85%和0.83%,共六个处理,每个处理10个重复,每个重复1头泌乳母猪。试验结果表明:夏季高温时,日粮蛋白质水平降低2.5%,不影响泌乳母猪生产性能、血清皮质醇和游离氨基酸含量,血清尿素氮浓度显著降低(P<0.05),显著减少粪氮排泄量(P<0.05)。与可消化赖氨酸水平0.93%相比,泌乳母猪日粮可消化赖氨水平为0.83%时,能显著提高哺乳仔猪平均日增重(P<0.05),显著减少母猪泌乳期失重(P<0.05),显著减少粪氮排泄量(P<0.05)。The experiment was conducted to investigate the effect of dietary protein and lysine levels on productive performance and N excretion of lactating sows in summer.The experiment was designed with 2×3 factor,the protein level was 18%and 15.5%,the digestible lysine levels were 0.93%,0.85%and 0.83%,respectively.There were 6 treatments and each treatment had 10 replicates with 1 lactating sow per replicate.The results showed that the productive performance,serum cortisol and free amino acid content of lactating sows was not affected negative(P>0.05),but the serum urea nitrogen concentration and fecal nitrogen excretion decreased significantly(P<0.05),while the reduction of dietary CP was 2.5%in summer.Compared with dietary digestible lysine level of 0.93%,when the dietary digestible lysine level in lactating sows was 0.83%,the average daily gain of suckling piglets was increased(P<0.05),the weight loss of sows during lactation was decreased and the excretion of fecal nitrogen was significantly reduced(P<0.05).

关 键 词：低蛋白质 赖氨酸 泌乳母猪 生产性能 氮排泄量 

分 类 号：S828.5[农业科学—畜牧学]