不同铁源对断奶仔猪生长性能、免疫功能及铁营养状况的影响

为了比较不同铁源对断奶仔猪生长性能、免疫功能及铁营养状况的影响，选用90头25日龄断奶大白仔猪，随机分为3组，每组3个重复，每个重复10头（公母各半）。各组分别饲喂含硫酸亚铁、富马酸亚铁或甘氨酸亚铁的日粮，日粮中铁添加水平均为150 mg/kg。试验期为28 d。结果表明，各组生长性能指标均无显著差异（P＞0.05）。在试验的第28 d，甘氨酸亚铁组血清IgG含量明显高于无机硫酸亚铁组和富马酸亚铁组（P＜0.01）。在第14 d，甘氨酸亚铁组的红细胞数略高于硫酸亚铁组（P=0.0518），而富马酸亚铁组与硫酸亚铁组差异不显著（P＞0.05）。本试验结果表明，甘氨酸亚铁是一种给断奶仔猪补铁优于硫酸亚铁和富马酸亚铁的安全铁源。

Effect of Iron Sources on the Growth Performance, Immune Function and Iron Status of Weanling Piglets

The purpose of this experiment was to study the effect of different iron sources on the growth performance,immune function and iron status of weanling piglets.Ninety weanling piglets(Large White,25 days of age) were randomly divided into 3 groups for three replicates of 10 piglets each(half male and half female).The piglets were fed with the diets containing 150 mg/kg ferrous sulfate,ferrous fumarate and ferrous glycine,respectively,for 28 d.No significant differences were observed on the growth performance during the trial(P>0.05).The diet with ferrous glycine increased IgG significantly compared with those with ferrous sulfate and ferrous fumarate(P<0.01) on 28 d.The diet with ferrous glycine increased RBC a little compared with that with ferrous sulfate(P=0.0518) on 14 d,while no difference was observed between ferrous fumarate and ferrous sulfate(P>0.05).The results showed that ferrous glycine is a better iron source than ferrous sulfate and ferrous fumarate for weanling piglets.