Effects of dietary supplementation with tribasic zinc sulfate or zinc sulfate on growth performance,zinc content and expression of zinc transporters in young pigs |
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| Authors: | Jie Wu Ciming Long Yajun Yao Hongxing Peng Dan Wan Xin Wu |
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| Affiliation: | 1. Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, China;2. Key Laboratory of Agro‐ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center of Healthy Livestock, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South‐Central, Ministry of Agriculture, Hunan, China;3. Changsha Xingjia Biotech Co., Ltd, Hunan, China |
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| Abstract: | An experiment was conducted to compare the effects of zinc sulfate (ZS) and tribasic zinc sulfate (TBZ) as sources of supplemental zinc on growth performance, serum zinc (Zn) content and messenger RNA (mRNA) expression of Zn transporters (ZnT1/ZnT2/ZnT5/ZIP4/DMT1) of young growing pigs. A total of 96 Duroc × Landrace × Yorkshire pigs were randomly allotted to two treatments and were fed a basal diet supplemented with 100 mg/kg Zn from either ZS or TBZ for 28 days. Feed : gain ratio in pigs fed TBZ were lower (P < 0.05) than pigs fed ZS, and average daily weight gain tended to increase (0.05 ≤ P ≤ 0.10) in pigs fed TBZ. Compared with pigs fed ZS, pigs fed TBZ had a higher CuZn‐superoxide dismutase and Zn content in serum (P < 0.05) while they had a lower Zn content in feces (P < 0.05). In addition, ZIP4 mRNA expression of zinc transporter in either duodenum or jejunum of pigs fed TBZ were higher (P < 0.05) than pigs fed ZS. These results indicate that TBZ is more effective in serum Zn accumulation and intestinal Zn absorption, and might be a potential substitute for ZS in young growing pigs. |
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| Keywords: | growth performance pigs tribasic zinc sulfate zinc sulfate |
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