摘要
比较酵母铜作为新型铜源添加剂与硫酸铜在大鼠上的饲喂效果。选择血缘相近,体重在60~90g的Wistar健康雌鼠66只,按2因子完全随机设计,分为11个处理,每个处理6个重复,试验期10d。采用酪蛋白、玉米淀粉纯合缺铜饲粮作为基础饲粮,分别以酵母铜和硫酸铜2种不同的铜源添加10、30、60、100、250mg/kg5个水平。结果表明:不同铜源、不同铜水平、不同铜源与不同铜水平互作之间,大鼠的平均日增重(ADG)、平均日采食量(ADFI)差异均不显著(P>0.05);但是酵母铜与硫酸铜相比,ADG和ADFI分别提高了2.5%和3.5%。不同铜源、不同铜水平、不同铜源与不同铜水平交互作用,对大鼠血清铜蓝蛋白、铜锌超氧化物歧化酶(CuZn-SOD)、肝铜含量都存在极显著的影响(P<0.01)。由此可见,不同铜源和水平能够显著影响大鼠对铜的吸收利用,且酵母铜源较硫酸铜源的效果更优。
Sixty-six Wistar female rats weighted 60-90 g were allotted to 11 treats with 6 replications, 1 rats per replicate in a completely randomized design according to two factorial experiment arrangement. 10, 30, 60,100,250 mg/ kg copper either from copper-enriched yeast or copper sulfate were added to the purified basal diet. The trial duration was 10 days after 12-day deletion. The results indicated that there were no significant difference between copper resources and treat level and copper resources x treat level in ADG or ADFI, but ADG and ADFI were increased by 2.5% and 3.5% respectively for copper-yeast treatments and copper sulfate treatments. There were extremely significance on ceruloplasmin, CuZn-SOD, liver-copper between copper resource among copper levels and copper resource x copper level. The results indicated that copper from yeast had higher bioavailability than that from copper sulfate.
出处
《中国畜牧杂志》
CAS
北大核心
2009年第23期26-29,共4页
Chinese Journal of Animal Science
基金
四川省“十一五”科技攻关重大项目(2007Z06-050)
关键词
生长性能
抗氧化酶
酵母铜
大鼠
growth performance
antioxidant enzyme
copper yeast
rats