Deng Bo, Zhou Xihong, Wu Jie, Long Ciming, Yao Yajun, Peng Hongxing, Wan Dan, Wu Xin
Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Zhejiang, China.
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.
Anim Sci J. 2017 Oct;88(10):1556-1560. doi: 10.1111/asj.12788. Epub 2017 Apr 12.
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.
进行了一项实验，比较硫酸锌（ZS）和碱式硫酸锌（TBZ）作为锌补充剂来源对生长育肥仔猪生长性能、血清锌（Zn）含量以及锌转运蛋白（ZnT1/ZnT2/ZnT5/ZIP4/DMT1）信使核糖核酸（mRNA）表达的影响。总共96头杜洛克×长白×约克夏猪被随机分配到两种处理组，分别饲喂添加了100 mg/kg来自ZS或TBZ的锌的基础日粮，为期28天。饲喂TBZ的猪的料重比低于饲喂ZS的猪（P < 0.05），且饲喂TBZ的猪的平均日增重有增加趋势（0.05≤P≤0.10）。与饲喂ZS的猪相比，饲喂TBZ的猪血清中的铜锌超氧化物歧化酶和锌含量更高（P < 0.05），而粪便中的锌含量更低（P < 0.05）。此外，饲喂TBZ的猪十二指肠或空肠中锌转运蛋白的ZIP4 mRNA表达高于饲喂ZS的猪（P < 0.05）。这些结果表明，TBZ在血清锌积累和肠道锌吸收方面更有效，可能是生长育肥仔猪中ZS的潜在替代品。
