肉鸡日粮中25-羟基维生素D_3与维生素D_3生物学效价比较  

Evaluation of bioavailability of 25-hydroxycholecalciferol and cholecalciferol in broiler chickens from 1 to 42 days of age

作　　者：瞿红侠[1] 王建国[1,2] 陈冠华[1,2] 张金龙[1,2] 韩进诚[1] 张进良[1] 席丽[1] 闫永峰[1] 

机构地区：[1]商丘师范学院生命科学学院动物科学系,河南商丘476000 [2]河南农业大学牧医工程学院,河南郑州450002

出　　处：《中国饲料》2015年第20期25-28,32,共5页China Feed

基　　金：国家自然科学基金项目(31101732);河南省创新型科技人才队伍建设工程项目

摘　　要：为比较肉鸡日粮中25-羟基维生素D3（25-OH-D3）与维生素D3相对生物学效价,选用1日龄罗斯308肉鸡母雏300只,随机分为6个处理组,每处理5个重复,每重复10只。设计6种日粮,在含0.50%Ca、0.25%非植酸磷（NPP）,无维生素D3的玉米-豆粕型基础日粮中分别添加3个水平25-OH-D3（2.5、5.0、10.0μg/kg）和3个水平维生素D3（5.0、10.0、20.0μg/kg）。结果显示：（1）以1~42日龄肉鸡体增重评价,25-OH-D3生物学效价是维生素D3的1.78倍;（2）以42日龄肉鸡胫骨强度、重量和灰分重量评价,25-OH-D3生物学效价分别是维生素D3的2.09、1.82和1.73倍;（3）以42日龄肉鸡股骨重量、长度和灰分重量评价,25-OH-D3生物学效价分别是维生素D3的1.80、1.65和1.81倍。综合分析,在1~42日龄肉鸡日粮中,以生长性能和骨骼矿化指标评价,25-OH-D3生物学效价约为维生素D3的1.81倍。The present study was conducted to compare the relative bioavailability（RBV）of 25-hydroxycholecalciferol（25-OH-D3）to cholecalciferol（VD3）for broilers from 1 to 42 days of age.On the day of hatch,300 female Ross 308 broilers were allotted to 6 treatments with 5 repli cates of 10 each.The basal diet contained 0.50% calcium（Ca）,0.25%non-phytate phosphorus（NPP）,and was not supplemented with VD3.VD3 adding level was 5.0,10.0,20.0 μg/kg and 25-OH-D3 adding level was 2.5,5.0,10.0 μg/kg.The results showed that using body weight gain（BWG）as the criteria,the RBV of 25-OH-D3 to VD3was 1.78.Using tibia breaking-strength,weight and ash weight as the criteria,the RBV of 25-OH-D3 to VD3were 2.09,1.82 and 1.73.Using femur weight,length and ash weight as the criteria,the RBV of 25-OH-D3 to VD3were 1.80,1.65 and 1.81.These data indicated that 25-OH-D3 was approximately 1.81 times as active as vitamin D3 for promoting growth performance and bone mineralization in broiler chickens from 1 to 42 days of age.

关 键 词：25-羟基维生素D3 维生素D3 生物学效价 生长性能 骨骼矿化 肉鸡 

分 类 号：S816.7[农业科学—饲料科学]