动物营养学报2019，Vol.31Issue(10)：4852-4858,7.DOI:10.3969／j.issn.1006⁃267x.2019.10.051
不同锌源和水平对断奶仔猪生长性能及血清、粪中锌含量的影响
Effects of Different Zinc Sources and Levels on Growth Performance and Content of Zinc in Serum and Feces of Weaned Piglets
摘要
Abstract
The purpose of this experiment was to study the effects of different zinc sources and levels on growth performance and content of zinc in serum and feces of weaned piglets. Two new types of zinc oxide were the inclusion molecular zinc oxide which made by inclusion technology and the zinc oxide which coated with stearic acid. A total of 250 twenty?four?day?old " Duroc×Langdrance×Large White" weaned piglets with body weight of (6.74±0.35) kg were randomly divided into 5 groups: control group ( basic diet+2 250 mg／kg normal oxidation zinc, as zinc count, the same as below) , inclusion molecular zinc oxide 300 group ( basic di?et+300 mg／kg inclusion molecular zinc oxide ) , inclusion molecular zinc oxide 600 group ( basic diet+600 mg／kg inclusion molecular zinc oxide) , coated zinc oxide 300 group ( basic diet+300 mg／kg coated zinc oxide) and coated zinc oxide 600 group ( basic diet+600 mg／kg coated zinc oxide) , and each group contained 5 replicates and each replicated contained 10 pigs ( half male and half female). The pre?experimental period lasted for 3 days, and the experimental period lasted for 14 days. The results showed as follows: 1) compared with the control group, the final body weight, average daily feed intake, average daily gain, feed conversion ratio and diarrhea rate of experimental groups had no significant differences ( P＞0.05 ). Compared with the coated zinc oxide groups, the average daily gain of inclusion molecular zinc oxide group was significantly in?creased ( P＜0.05) , and the average daily feed intake showed an increasing trend (0.05＜P＜0.10). 2) Com?pared with the control group, the serum zinc contents of experimental groups were decreased by 62.01%, 39.94%, 56.17% and 48.70%, respectively; the faecal zinc contents were 0.25 fold, 0.41 fold, 0.31 fold and 0.32 fold of the control group, and there were all significant difference ( P＜0.05). In conclusion, 300 or 600 mg／kg inclusion molecule zinc oxide and coated zinc oxide both can achieve the same effects as high dose ( 2 250 mg／kg) zinc oxide on growth performance, and the fecal zinc emission reduced significantly.[ Chinese Journal of Animal Nutrition, 2019, 31(10) :4852?4858]关键词
锌源/水平/断奶仔猪/生长性能/微量元素Key words
zinc source/level/weaned piglets/growth performance/trace elements分类
农业科技引用本文复制引用
陈雅湘,陈思佳,穆蕊,方热军..不同锌源和水平对断奶仔猪生长性能及血清、粪中锌含量的影响[J].动物营养学报,2019,31(10):4852-4858,7.基金项目
国家重点研发计划"畜禽养殖绿色安全饲料饲养新技术研发"(2018YFD0500600) "畜禽微量元素理想模式研究与应用"子课题 （2018YFD0500600）
