摘要
本试验旨在研究不同锌源与水平对冬毛期母貂体重、养分消化率及氮代谢的影响。选择84只母貂作为试验动物,随机分为7组,每组12只,日粮中分别添加蛋氨酸螯合锌0mg/kg(A组)、15mg/kg(B组)、30mg/kg(C组)、45mg/kg(D组)、60mg/kg(E组)、75mg/kg(F组)和硫酸锌60mg/kg(G组)。结果表明,E组与G组母貂的体重、养分消化率和氮平衡没有显著差异(P>0.05),但B组脂肪消化率显著高于G组;E组母貂的体重(160d)和平均日增重最高,显著高于D组(P<0.05);D组母貂蛋白质消化率最高,与C组差异显著(P<0.05);B组母貂脂肪消化率显著地高于其他各水平组(P<0.05)。由此得出:冬毛期母貂日粮中添加蛋氨酸锌能促进水貂体重增加和养分利用。
This study was conducted to evaluate the effects of different sources and levels of zinc on body weight ,nutrient digestibility and nitro-gen balance of female mink in furring period .Eighty four female minks were randomly allocated into 7 groups ,each with 12 replicates .The diets were supplemented with zinc methionine at levels of 0mg/kg（group A） ,15mg/kg（group B） ,30mg/kg（group C） ,45mg/kg（group D） ,60mg/kg （group E） ,75mg/kg（group F） and with Zinc sulfate at the level of 60mg/kg（group G） ,respectively .The results showed that ,there were no significant difference between group E and group G on body weight ,nutrient digestibility and nitrogen balance of female mink （ P〉0.05 ） ,but fat digestibility was significantly higher than that of group G .Body weight（160d） and average daily gain of group E were the highest ,significant-ly higher than that of group D （ P〈0.05 ） .Protein digestibility of group D was the highest ,markedly higher than that of group C （ P〈0.05 ） .Fat digestibility of group B was evidently higher （ P〈0.05 ） than those of other groups having different Zinc levels （ P〈0.05 ） .In conclusion ,body weight and digestibility could be improved by using zinc methionine in diet for female minks in furring period .
出处
《特产研究》
2013年第3期13-17,共5页
Special Wild Economic Animal and Plant Research
基金
公益性行业(农业)科研专项(200903014)
关键词
冬毛期
母貂
锌
体重
消化代谢
furring period
female mink
zinc
body weight
digestibility and metabolism
