Effects of Different Iron Sources and Levels on Iron Nutritional Status and Antioxidant Properties of Pregnant Sows

DONG Donghua; ZHANG Guiguo; YANG Weiren; LIU Faxiao; ZHANG Liang

doi:10.3969/j.issn.1006-267x.2014.05.008

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 5: 1180 - 1188

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.05.008

Swine Nutrition

Effects of Different Iron Sources and Levels on Iron Nutritional Status and Antioxidant Properties of Pregnant Sows

DONG Donghua ,
ZHANG Guiguo ,
YANG Weiren ,
LIU Faxiao ,
ZHANG Liang

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College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China

Received date: 2013-11-11

Online published: 2014-05-05

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Abstract

This experiment was conducted to study the effects of different iron sources and levels on blood physiological and biochemical parameters, colostrous and placental iron content, serum antioxidant properties of pregnant sows. Forty-five pregnancy sows (Landrace×Yorkshire) with similar parity (3 to 4 fetal) at 28 days prior to farrowing were randomly divided into 9 groups with 5 replicates per group. The control group was fed a basal diet, and the experimental groups were fed the basal diet supplemented (calculated as iron)with 50, 80, 110 and 140 mg/kg glycine iron (Fe-Gly) or ferrous sulfate (FeSO₄·H₂O) for 28 day, respectively. The results showed as follows: 1) Fe-Gly or FeSO₄·H₂O supplemented diet significantly increased red blood cell (RBC) count and hemoglobin (HGB) content (P<0.05) of sow. The HGB content of Fe-Gly group tended to be increased compared with FeSO₄·H₂O group (P=0.098). 2) Fe-Gly or FeSO₄·H₂O supplemented diet significantly improved the contents of serum ferritin (FE) and serum iron (SI) of sows, however, significantly decreased total iron binding capacity (TIBC) (P<0.05), and the effect of Fe-Gly was better than that of FeSO₄·H₂O. 3)Fe-Gly or FeSO₄·H₂O supplemented diet significantly improved colostrous iron content(P<0.05). Fe-Gly supplemented diet increased the colostrous iron and placental iron content compared with the FeSO₄·H₂O group (P<0.05). 4) Fe-Gly or FeSO₄·H₂O supplemented diet significantly improved serum total antioxidant capacity (T-AOC), glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) activities (P<0.05),the malondialdehyde (MDA) content in serum was significantly decreased (P<0.05). At the same level, the effect of Fe-Gly was better than that of FeSO₄·H₂O. In conclusion, different iron sources and levels have significant influence on iron nutritional status and serum antioxidant properties of sows in the present study, and the effect of that of Fe-Gly was better than FeSO₄·H₂O. According to the HGB content of sows, and taking other indicators into consideration, the suitable levels (calculated as iron) of Fe-Gly and FeSO₄·H₂O in diet of sows are 80 and 110 mg/kg, respectively.

Key words： glycine iron; ferrous nutrition; pregnant sow; iron status; serum antioxidant properties

Cite this article

DONG Donghua , ZHANG Guiguo , YANG Weiren , LIU Faxiao , ZHANG Liang . Effects of Different Iron Sources and Levels on Iron Nutritional Status and Antioxidant Properties of Pregnant Sows[J]. Chinese Journal of Animal Nutrition, 2014 , 26(5) : 1180 -1188 . DOI: 10.3969/j.issn.1006-267x.2014.05.008

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