作 者：
杨平;吴德;车炼强;方正锋;林燕;谯仕彦;李勇;曾毅;苏祥
单 位：
中国农业大学国家饲料工程技术研究中心;广西商大科技有限公司;四川农业大学动物营养研究所
关键词：
L-精氨酸;NCG;PRRSV;妊娠母猪;繁殖性能;免疫
摘 要：
本文旨在研究饲粮添加L-精氨酸或N-氨甲酰谷氨酸(N-carbamyl glutamate,NCG)对感染猪繁殖与呼吸综合征病毒(porcine reproductive and respiratory syndrome virus,PRRSV)妊娠母猪繁殖性能及免疫功能的影响。选用3～5胎感染PRRSV的母猪(长白×大约克)60头,随机分为3组,每组20头,单栏饲养。试验猪妊娠第30～90天分别饲喂含1.7%L-丙氨酸(对照组)、1.0%L-精氨酸和0.1%NCG的等氮饲粮,妊娠第91天至分娩饲喂对照组饲粮。妊娠第30、90和110天早上采食后2 h收集母猪血样。试验结果表明:与对照组相比,1%L-精氨酸添加组窝产活仔数提高0.89头(P<0.05),窝活仔重提高1.02 kg(P>0.05),0.1%NCG添加组窝产活仔数提高0.33头(P>0.05);1.0%L-精氨酸添加组和0.1%NCG添加组妊娠第90天母猪血清免疫球蛋白G(IgG)、免疫球蛋白M(IgM)和PRRSV抗体水平显著升高(P<0.05),血浆尿素浓度显著降低(P<0.05);1.0%L-精氨酸添加组妊娠第90天母猪血浆蛋氨酸、精氨酸、鸟氨酸、脯氨酸浓度显著升高(P<0.05),妊娠第110天母猪血清IgG水平显著升高(P<0.05);1.0%L-精氨酸添加组和0.1%NCG添加组母猪繁殖性能无显著差异(P>0.05),但1.0%L-精氨酸添加组妊娠第90天母猪血浆蛋氨酸、精氨酸、鸟氨酸浓度及血清IgG水平显著高于0.1%NCG添加组(P<0.05)。结果提示:饲粮添加L-精氨酸或NCG能改善妊娠母猪繁殖性能,其作用途径可能与饲粮中L-精氨酸或NCG可以提高母猪体内部分氨基酸利用率及免疫力有关。
译 名：
Effects of Dietary L-arginine or N-carbamylglutamate Supplementation on Reproductive Performance and Immune Function of PRRSV-infected Pregnant Sows
作 者：
YANG Ping1 WU De1 CHE Lianqiang1 FANG Zhengfeng1 LIN Yan1 QIAO Shiyan2 LI Yong3 ZENG Yi3 SU Xiang3(1.Key Laboratory for Animal Disease-resistance Nutrition of China Ministry of Education,Institute of Animal Nutrition, Sichuan Agricultural University,Ya'an 625014,China;2.National Feed Engineering Technology Research Center,China Agricultural University,Beijing 100193,China;3.Guangxi Shangda Technology Co.Ltd.,Nanning 530105,China)
关键词：
L-Arg;NCG;PRRSV;pregnant sows;reproductive performance;immune
摘 要：
The study was conducted to investigate the effects of dietary L-arginine(Arg) or N-carbamylglutamate(NCG) supplementation on reproductive performance and immune function of porcine productive and respiratory syndrome virus(PRRSV)-infected pregnant sows.At day 30 of gestation,sixty Yorkshire×Landrace multiparous sows with PRRSV infection were selected and randomly assigned into three groups with 20 pigs in each group.Sows in the control group were fed the diet containing 1.7% alanine,and the others in two experimental groups were fed the diets supplemented with 1.0% L-Arg or 0.1% NCG.Sows were fed the control diet from day 91 to 114 of gestation.Blood samples were collected after the morning feed for 2 h at day 30,90 and 110 of gestation.Compared with the control group,1.0% L-Arg supplementation increased the number of piglets born alive by 0.89(P<0.05),and live litter birth weight of piglets by 1.02 kg(P>0.05);0.1% NCG supplementation increased the number of piglets born alive by 0.33(P>0.05);serum levels of IgM,IgG and PRRSV-Ab from 1.0% L-Arg or 0.1% NCG supplementation groups were significantly higher than those from the control group at day 90 of gestation(P<0.05),and plasma concentration of urea was significantly lower than that from the control group(P<0.05);1.0% L-Arg supplementation increased plasma concentrations of methionine,arginine,ornithine and proline at day 90 of gestation,and serum level of IgG at day 110 of gestation compared to the control group(P<0.05);plasma concentrations of methionine,arginine,ornithine and proline from the 1.0% L-Arg supplementation group were higher than those from the control group at day 90 of gestation(P<0.05).However,all of the measured indices did not differ between the 1.0% L-Arg and 0.1% NCG supplementation groups(P>0.05),but plasma concentrations of methionine,arginine and ornithine from the 1.0% L-Arg supplementation group were significantly higher than those from the 0.1% NCG supplementation group at day 90 of gestation(P<0.05).The results of this study indicate that dietary L-Arg or NCG supplementation can improve the reproductive performance of pregnant sows by improving the utilization of amino acids and immune function.
