›› 2010, Vol. 37 ›› Issue (12): 11-14.

• 动物营养与饲料科学 • 上一篇    下一篇

AA肉仔鸡氨基酸维持模式的确立

杨志刚,蔡辉益,刘国华,李勇,常文环,张姝   

  1. (中国农业科学院饲料研究所,北京 100081)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-12-20 发布日期:2010-12-20
  • 通讯作者: 蔡辉益

The Amino Acid Pattern for Maintenance Requirements of Broilers

YANG Zhi-gang, CAI Hui-yi, LIU Guo-hua , LI Yong, CHANG Wen-huan ,ZHANG Shu   

  1. (Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-12-20 Published:2010-12-20
  • Contact: CAI Hui-y

摘要: 分别选取体重均匀、健康一致的2与6周龄AA肉仔鸡各72只,随机分成2个处理,每处理6个重复,每重复6只鸡(公母各半),分别饲喂无氮与低氮日粮。以无氮日粮测定内源性氨基酸排泄量,以低氮日粮测定羽毛、皮屑等脱落造成的氨基酸排泄量。结果发现,除了甘氨酸、胱氨酸外其他15种氨基酸的维持需要量(mg/g BW2/3·d)在2与6周龄间差异显著(P<0.05)。氨基酸模式的差异说明0~3周龄肉仔鸡与成年肉仔鸡的氨基酸需要量模式是不同的。因此,2、6周龄的氨基酸维持模式可分别作为0~3、4~8周龄肉仔鸡的氨基酸维持模式。

关键词: 无氮日粮; 低氮日粮; 维持需要; 氨基酸

Abstract: A total of seventy-two of 2-week-old,6-week-old AA broilers were randomly arranged into two treatments with 6 replicates of 6 broilers(3:male,3:female), fed diets with nitrogen free diet and low nitrogen diet,separately.Endogenesis amino acid excretion was determined by nitrogen free diet.Amino acid excretion from feather loss, scurf loss et al was determined by low nitrogen diet.The results indicated that the requirements of fifteen amino acids except Gly,Cys for maintenance were significantly different between 14 and 42-day-old(P<0.05).Amino acid pattern was different between broilers of 0 to 3-week-old and adult broilers.In conclusion,the amino acid patterns of 2-week-old and 6-week-old broilers for maintenance could be regarded as that of 0 to 3-week-old and 4 to 8-week-old broilers,respectively.

Key words: nitrogen free diet; low nitrogen diet; maintenance requirement; amino acid

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