The purpose of this study was to investigate the effects of diet type (normal or low Ca and P diets) and 25(OH)D3 supplementation (with or with not 2000 IU/kg 25(OH)D3 ) during late gestation on the serum biochemistry and reproductive performance of aged sows and newborn piglets. A total of 40 sows, which are at their 7th parity, were divided into four groups: control group (standard diet), low Ca group, 25(OH)D3 group and low Ca plus 25(OH)D3 group respectively (10 in each group). The blood of sows on day 100 and 114 of gestation and newborn piglets was collected for serum biochemical analyses. Results showed that the reproductive performance of sows was not influenced by diet type or 25(OH)D3 supplementation (p > 0.05). And the addition of 25(OH)D3 to diet low Ca group caused that the content of serum TG in sows on day 100 of gestation was not different from that of the control group (p > 0.05). The addition of 25(OH)D3 significantly decreases the content of serum TG in sows on day 114 of gestation (p < 0.05). The addition of 25(OH)D3 significantly increased the content of serum UREA and CREA in newborn piglets (p < 0.05). Overall, feeding 2000 IU/kg 25(OH)D3 to aged sows at late gestation had no effects on reproductive performance, but partly contributed to keeping serum TG balance in sows and may indicate increased pressure on kidneys in newborn piglets.

中文翻译：

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妊娠后期补充25（OH）D3对高龄母猪和新生仔猪血清生化和生殖性能的影响。

这项研究的目的是调查妊娠后期饮食类型（正常或低钙和低钙饮食）和补充25（OH）D3（有或没有2000 IU / kg 25（OH）D3）对血清的影响母猪和新生仔猪的生化和生殖性能。第7胎的40头母猪分为4组：对照组（标准日粮），低钙组，25（OH）D3组和低钙加25（OH）D3组（10只）。每组）。在妊娠的第100天和第114天收集母猪的血，并进行新生仔猪的血清生化分析。结果表明，母猪的生殖性能不受日粮类型或添加25（OH）D3的影响（p> 0.05）。在低钙饮食组中添加25（OH）D3导致妊娠第100天母猪血清TG含量与对照组无差异（p> 0.05）。妊娠第114天添加25（OH）D3会显着降低母猪血清TG含量（p <0.05）。添加25（OH）D3可以显着增加新生仔猪的血清UREA和CREA含量（p <0.05）。总体而言，在妊娠后期向成年母猪饲喂2000 IU / kg 25（OH）D3对繁殖性能没有影响，但在一定程度上有助于保持母猪的血清TG平衡，并可能表明新生仔猪对肾脏的压力增加。添加25（OH）D3可以显着增加新生仔猪的血清UREA和CREA含量（p <0.05）。总体而言，在妊娠后期向成年母猪饲喂2000 IU / kg 25（OH）D3对繁殖性能没有影响，但在一定程度上有助于保持母猪的血清TG平衡，并可能表明新生仔猪对肾脏的压力增加。添加25（OH）D3可以显着增加新生仔猪的血清UREA和CREA含量（p <0.05）。总体而言，在妊娠后期向成年母猪饲喂2000 IU / kg 25（OH）D3对繁殖性能没有影响，但在一定程度上有助于保持母猪的血清TG平衡，并可能表明新生仔猪对肾脏的压力增加。