| 肉鸭常用植物性饲料原料有效磷评定及可加性研究 |
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| 引用本文： | 陈娴,刘国华,刘宏.肉鸭常用植物性饲料原料有效磷评定及可加性研究[J].动物营养学报,2010,22(4). |
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| 作者姓名： | 陈娴 刘国华 刘宏 |
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| 作者单位： | 中国农业科学院饲料研究所,北京,100081 |
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| 摘 要： | 本文旨在用强饲-排宅法研究肉鸭植物性饲料原料有效磷的可加性.选择体重相近的21日龄樱桃符雄性肉鸭84只,随机分为7组,每组6个重复,每个重复2只鸭.分别强饲70 g玉米、豆粕、棉籽粕、菜籽粕和等比例混合的玉米-豆粕、玉米-豆粕-棉籽粕、玉米-豆粕-棉籽粕-菜籽粕混合饲粮,集粪袋法收集48 h排泄物,测定磷的生物学效价.结果显示,肉鸭对3种组合混合饲粮中,玉米-豆粕-棉籽粕组合的总磷表观利用率、总磷真利用率、表观有效磷和真有效磷的实测值与计算值差异显著(P＜0.05),玉米-豆粕和玉米-豆粕-棉籽粕-菜籽粕2种混合饲粮实测值与计算值差异不显著(P＞0.05).由此得出如下结论;1)饲料原料真有效磷的可加性优于表观有效磷的可加性;2)不同饲料原料可加性优劣因原料组合不同而存在一定的差异.
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| 关 键 词： | 鸭 植物性饲料原料 总磷真利用率 可加性 |
Evaluation and Additivity of Available Phosphorus in Feedstuffs of Plant Origin for Ducks |
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| CHEN Xian,LIU Guohua,LIU Hong.Evaluation and Additivity of Available Phosphorus in Feedstuffs of Plant Origin for Ducks[J].Acta Zoonutrimenta Sinica,2010,22(4). |
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| Authors: | CHEN Xian LIU Guohua LIU Hong |
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| Institution: | CHEN Xian LIU Guohua LIU Hong(Feed Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China) |
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| Abstract: | This study was executed to research the evaluation and additivity of available phosphorus(P)in feedstuffs of plant origin for ducks with emptying-force-feeding method.Eight-four 21-day-old ducks with similar weight and excreta-collecting apparatus were randomly assigned into 7 treatments with 6 replicates in each treatment and 2 ducks in each replicate.The ducks under trial were starved for 72 h.After fasting period,the ducks from different treatments were fed by gavage with 70 g corn,soybean meal,cottonsee... |
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| Keywords: | duck feedstuffs of plant origin true total phosphorus availability additivity |
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