›› 2010, Vol. 37 ›› Issue (1): 22-24.

• 动物营养与饲料科学 • 上一篇    下一篇

不同比例有机锌与无机锌对断奶仔猪生长性能的影响

张纯,邝声耀,唐凌   

  1. (四川省畜牧科学研究院动物营养所, 成都 610066)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-20 发布日期:2010-01-20

The Effect of Different Proportions of Organic Zinc and Inorganic Zinc on Growth Performance of Weaning Pigs

ZHANG Chun,KUANG Sheng-yao, TANG Ling   

  1. (Institute of Animal Nutrition, Sichuan Academy of Animal Sciences, Chengdu 610066, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-20 Published:2010-01-20

摘要: 试验旨在研究不同配合比例的锌氨基酸螯合物(Zn-AAC)与硫酸锌(ZnSO4)对断奶仔猪生长性能的影响。选用45头28日龄断奶三元杂交仔猪,随机分为5组,每组3个重复,每个重复3头仔猪,基础日粮相同,分别接受锌添加量相同(100 mg/kg)但有机锌和无机锌配合比例不同的处理日粮,对照组锌100%由ZnSO4提供,其余4组分别用Zn-AAC取代对照组锌添加量的40%、60%、80%和100%。试验期28 d,包括前期(1~14 d)和后期(15~28 d) 2个阶段。结果表明,与对照组(无机锌100%)相比,有机锌分别取代无机锌的40%、60%、80%和100%,试验前期平均日增重(ADG)分别提高22.0%(P>0.05)、38.5%(P<0.01)、32.6%(P<0.05)、26.2%(P<0.05),平均日采食量(ADFI)分别增加24.6%(P<0.05)、25.3%(P<0.05)、23.5%(P<0.05)、23.8%(P<0.05);试验后期所有含有机锌组的ADFI增加(P>0.05);整个试验期,含有机锌60%组的ADG高于对照组(P<0.01),各组间饲料转换效率(FCR)差异不显著(P>0.05)。因此,断奶仔猪日粮补充常规剂量的锌,有机锌与无机锌比较,能够提高仔猪ADG和ADFI;有机锌与无机锌合用的饲喂效果优于单一使用,其最佳配合比例为60%有机锌加40%无机锌。

关键词: 锌; 生长性能; 断奶仔猪

Abstract: This study explored the effect of different proportions of zinc amino acid chelates(Zn-AAC) and zinc sulphate(ZnSO4) on the growth performance of weaning pigs. Forty five hybrid pigs of 28 days old were selected and randomly allotted to one of five dietary treatments. There were three replicates per treatment and three pigs in each replicate. All animals were fed with the same basic diet supplied 100 mg/kg of zinc but with different proportions of organic zinc (Zn-AAC) and inorganic zinc (ZnSO4). Pigs in the control group were complemented with 100% ZnSO4, and the amount of zinc in diets of group 2, 3, 4 and 5 were substituted with 40%,60%,80% and 100% Zn-AAC,respectively.The 28-day trial included two phases of 1 to 14 d and 15 to 28 d.Data obtained in this study showed: from day 1 to day 14, the ADG of piglets in group 2,3,4 and 5 was increased by 22.0% (P>0.05), 38.5% (P<0.01), 32.6% (P<0.05) and 26.2% (P<0.05), respectively, and ADFI, by 24.6% (P<0.05), 25.3% (P<0.05), 23.5% (P<0.05) and 23.8% (P<0.05), respectively, when compared with the control piglets. From 15 to 28 d, all animals fed with organic zinc displayed higher ADFI than the control group (P>0.05). From 1 to 28 d, piglets fed diets with 60% of organic zinc had statistical improvement in ADG(P<0.01), with no significant change in FCR. In conclusion, the supplementation of organic zinc with normal dosage could increase the ADG, ADFI. The combination of organic and inorganic zinc is superior to either one. The optimal proportion of organic zinc to inorganic zinc is 60∶40.

Key words: zinc; growth performance; weaning pigs

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