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饲粮添加L-精氨酸或N-氨甲酰谷氨酸对感染PRRSV妊娠母猪繁殖性能及免疫功能的影响

DOI: 10.3969/j.issn.1006-267x.2011.08.014

Keywords: L-精氨酸,NCG,PRRSV,妊娠母猪,繁殖性能,免疫

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Abstract:

本文旨在研究饲粮添加L-精氨酸或N-氨甲酰谷氨酸(N-carbamylglutamate,NCG)对感染猪繁殖与呼吸综合征病毒(porcinereproductiveandrespiratorysyndromevirus,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2h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1.02kg(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。

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