Effects of iron from an amino acid complex on the iron status of neonatal and suckling piglets

文献类型： 外文期刊

第一作者： Wei, KQ

作者： Wei, KQ;Xu, ZR;Luo, XG;Zeng, LL;Chen, WR;Timothy, MF

作者机构：

关键词： iron-amino acid complex;ferrous sulfate;hemoglobin;milk iron;sow;piglet

期刊名称：ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES （ 影响因子：2.509； 五年影响因子：2.604 ）

ISSN： 1011-2367

年卷期： 2005 年 18 卷 10 期

页码：

收录情况： SCI

摘要： This experiment was conducted to investigate the effects of iron from an amino acid complex (Availa-Fe(R)) on the iron status of neonatal and suckling piglets. A total of 24 gestating sows (LandracexLarge White) were randomly allocated to three dietary treatments. The control diet contained 80 mg kg(-1) Fe from ferrous sulfate heptahydrate (FeSO(4)center dot 7H(2)O), while the two experimental diets were supplemented with an additional 120 mg kg(-1) Fe from Availa-Fe(R) or FeSO(4)center dot 7H(2)O, respectively. The lactating sows remained the same iron treatments as gestating sows, while neonatal piglets of 24 litters born from the above sows were allotted to another three treatments. Piglets from the sows of the control treatment were fed basal diet with no supplemental Fe as control treatment, but were injected with 100 mg Fe as Fe dextran at birth. Piglets from the sows of Availa-Fe(R) or FeSO(4)center dot 7H(2)O treatments were supplemented with 120 mg kg(-1) iron from Availa-Fe(R) or FeSO(4)center dot 7H(2)O, respectively. The total born alive and weaned, and the average piglets weight at birth and at weaning were not significantly affected by the sow's dietary treatments (p>0.05). Iron from Availa-Fe(R) did not demonstrate a statistically significant improvement in hemoglobin concentration, hematocrit and plasma iron of sows on day 90 and 105 of pregnancy and the milk iron of sows during lactation (p>0.05). Neonatal piglets in the Availa-Fe(R) treatment had a significantly higher hemoglobin concentration (p<0.05) and higher hematocrit and plasma iron (p>0.05) than those in the other two treatments, respectively. The hemoglobin of suckling piglets in the Availa-Fe(R) treatment was higher than that of piglets in FeSO4-7H(2)O treatment on day 28 (p<0.05). The total iron binding capacity of piglets in Availa-Fe(R) treatment was lower than that of piglets in the control and FeSO(4)center dot 7H(2)O treatment on day 14 (p<0.05), but there was not a statistically significant difference among three treatments on day 28 (p>0.05). However, the hemoglobin and hematocrit of suckling piglets injected with Fe were higher than those of piglets in the other two treatments (p<0.05). This study indicated that the addition of 120 mg kg(-1) iron from amino acid complex into the diets improved iron status of neonatal and nursing piglets more effectively than the addition of 120 mg kg(-1) iron from FeSO(4)center dot 7H(2)O, however, this improvement of the organic Fe was not sufficient to replace the Fe injection for prevention of iron-deficiency anemia.

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