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饲粮中添加不同水平L-精氨酸对妊娠母猪繁殖性能及血液生化指标的影响

DOI: 10.3969/j.issn.1006-267x.2012.10.022

Keywords: L-精氨酸,妊娠母猪,繁殖性能,一氧化氮相关指标

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Abstract:

本研究探讨饲粮中添加不同水平L-精氨酸(L-Arg)对母猪繁殖性能及血浆一氧化氮相关指标的影响。试验选择36头2胎次母猪(长白×大约克),随机分为4组,每组9头母猪。各组饲粮分别在基础饲粮中添加0L-Arg+1.70%L-丙氨酸(L-Ala)(0L-Arg组)、0.4%L-Arg+1.02%L-Ala(0.4%L-Arg组)、0.7%L-Arg+0.51%L-Ala(0.7%L-Arg组)和1.0%L-Arg+0L-Ala(1.0%L-Arg组),各组添加L-Ala以满足等氮平衡需要。试验期从母猪配种当天到分娩。结果表明:1.0%L-Arg组比0L-Arg组显著提高了窝产活仔数和初生窝重(P<0.05),随着饲粮中L-Arg水平的提高,窝产仔总数和初生个体重有上升趋势(P>0.05);母猪妊娠第30、60和90天,1.0%L-Arg组血浆中Arg、鸟氨酸含量均显著或极显著高于0.7%、0.4%、0L-Arg组(P<0.05或P<0.01);母猪妊娠第90天,各组间的血浆脯氨酸含量均有极显著差异(P<0.01),但第30、60天差异均不显著(P>0.05);母猪妊娠第30、60、90天,1.0%L-Arg组血浆一氧化氮含量和第90天血浆总一氧化氮合酶(TNOS)、诱导型一氧化氮合酶(iNOS)活性均显著或极显著高于0.7%、0.4%、0L-Arg组(P<0.05或P<0.01)。经回归分析,母猪的窝产仔总数、窝产活仔数、初生窝重、血浆中各氨基酸、一氧化氮含量及TNOS和iNOS的活性与饲粮L-Arg水平均有显著或极显著的线性关系(P<0.05或P<0.01)。结果提示,饲粮中L-Arg水平变化对母猪妊娠后期血液生化指标影响明显,饲粮中添加1.0%L-Arg对提高母猪繁殖性能效果最佳。

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