摘要
10 5头“杜长大”仔猪 ,按饲养试验要求分为 5组 ,分别饲以添加 10 0 ,2 0 0 ,30 0 0mg/kg氧化锌 ,10 0 ,2 0 0mg/kg蛋白锌的相同饲粮 ,进行为期 30天的饲养试验后 ,从每组中各选取 6头试验猪进行了屠宰分割 ,测定胴体组成 ,并依解剖位置分离骨骼肌并称重 ,分析测定了背最长肌和肝脏中常量营养成分和核酸含量。结果表明 ,添加不同化学形式锌对仔猪胴体组成、不同骨骼肌的重量 ,心、肾的相对重量均无明显影响 ,但添加 30 0 0mg/kg氧化锌组肝脏相对重量较对照组提高了11 33%。添加 30 0 0mg/kg氧化锌使肝脏中粗蛋白、粗脂肪含量发生了显著变化 ,前者上升了4 0 3% (P <0 .0 5) ,后者下降了 2 5.58% (P <0 .0 1)。添加 30 0 0mg/kg氧化锌使肝脏RNA呈升高趋势 ,RNA/DNA比值上升了 9.2 9% (P <0 .0 1)。
A feeding trial using 105 weanling pigs randomly assigned to five groups receiving the same basal diet,supplemented with 100,200,3 000 mg/kg zinc oxide;100,200 mg/kg zinc proteinate was conducted for 30 d. After the completion of feeding trial,six pigs from each group were randomly picked out to be slaughtered to determine the carcass characteristics. Selected skeletal muscles were dissected from the left carcass and weighted. Contents of nucleic acid and nutrients in LD and liver were determined. Results showed that no significant difference was found with the addition of different chemical forms of zinc,while the relative weight of liver in 3 000 mg/kg zinc oxide group was increased by 11.33%,compared with the control.With the supplementation of 3 000 mg/kg zinc oxide ,CP content in the liver was increased by 4.03%( P <0.05),while EE content was decreased by 25.58%( P <0.01).There is an increase tendency of RNA content in liver ,and RNA/DNA ratio was increased by 9.29%( P <0.01) by adding 3 000 mg/kg zinc oxide.
出处
《浙江农业学报》
CSCD
2001年第4期205-209,共5页
Acta Agriculturae Zhejiangensis
