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。
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（P0.05）,and live litter birth weight of piglets by 1.02 kg（P0.05）;0.1% NCG supplementation increased the number of piglets born alive by 0.33（P0.05）;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（P0.05）,and plasma concentration of urea was significantly lower than that from the control group（P0.05）;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（P0.05）;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（P0.05）.However,all of the measured indices did not differ between the 1.0% L-Arg and 0.1% NCG supplementation groups（P0.05）,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（P0.05）.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.
出处
《动物营养学报》
CAS
CSCD
北大核心
2011年第8期1351-1360,共10页
CHINESE JOURNAL OF ANIMAL NUTRITION
