| 日粮维生素A水平对肉鸡生长性能及营养物质消化率的影响 |
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| 引用本文： | 郭晓宇,闫素梅,史彬林,王石莹,解新霞.日粮维生素A水平对肉鸡生长性能及营养物质消化率的影响[J].饲料工业,2010,31(4). |
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| 作者姓名： | 郭晓宇 闫素梅 史彬林 王石莹 解新霞 |
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| 作者单位： | 内蒙古农业大学动物科学与医学学院,010018,内蒙古呼和浩特市昭乌达路306号 |
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| 基金项目： | 国家自然科学基金资助项目(30460096) |
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| 摘 要： | 试验采用单因子完全随机试验设计,以玉米和豆粕为主要原料配制基础日粮,将450只1日龄雌雄各半的健康艾维茵肉鸡,随机分为5个处理组,每个处理组设6个重复,每重复组15只鸡,试验期42d。维生素A的5个添加水平分别为3000、6000、15000、30000和60000IU/kg。在整个试验期内,与3000、6000IU/kg维生素A组相比,30000、60000IU/kg维生素A组的肉鸡生长速度与饲料转化效率有趋于显著的下降趋势(P0.10),15000IU/kg维生素A组生长速度也有降低的趋势。随日粮维生素A水平的增加,肉鸡对日粮粗蛋白质与钙的消化率呈一次线性降低趋势(P0.10),其中,日粮维生素A水平为3000～6000IU/kg时消化率较高,维生素A水平为30000～60000IU/kg时较低。日粮维生素A水平为15000IU/kg时,提示肉鸡维生素A临界过量;日粮维生素A水平达到30000IU/kg以上时,提示肉鸡维生素A过量。
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| 关 键 词： | 维生素A 肉鸡 生长性能 营养物质消化率 |
Effect of vitamin A level on growth performance and digestibility of nutrients for broilers |
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| Guo Xiaoyu,Yan Sumei,Shi Binlin,Wang Shiying,Xie Xinxia.Effect of vitamin A level on growth performance and digestibility of nutrients for broilers[J].Feed Industry,2010,31(4). |
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| Authors: | Guo Xiaoyu Yan Sumei Shi Binlin Wang Shiying Xie Xinxia |
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| Abstract: | A total of four hundred and fifty 1-d-old Arbor Acre half male and half female broilers with similar body weight were randomly allotted into five treatments with six replicates in every treatment and fifteen chickens each replicate.The trial lasted for forty-two days.Broilers were fed five levels of dietary vitamin A(3 000,6 000,15 000,30 000,60 000 IU/kg) in a single factorial arrangement.The results showed that growth rates and feed conversion efficiency had a significant tendency to be decreased along wi... |
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| Keywords: | vitamin A broiler chicken growth performance digestibility of nutrients |
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