摘要
Two nitrogen balance trials after partial deletion of dietary amino acids(AA) were conducted to investigate the ideal balance patterns of dietary digestible lysine(Lys),sulphur containing amino acid(SAA),threonine(Thr)and tryptophan(trp)for the growing(35 60kg)and finishing (60 90kg) pigs.Eighteen Yorkshire × Landrace crossbred castrates were employed for the trials.Six isoenergetic diets based on corn,soybean meal and corn gluten meal were prepared for each trial.They were basal diet(BD)with 16 1% and 14 9% crude protein(CP)for each stage,25% low CP diet(s) supplemented with all the four (positive control,PC)or with three of the four AAs to have an equal digestible AA content,except the examined one which was 25% lower than that in BD.The result showed that the ideal amino acid pattem expressed on digestible basis was Lys 100,SAA 49,Thr 72,Trp 19 for growing stage and Lys 100,SAA 34,Thr 64,Trp 23 for finishing stage of pigs.
Two nitrogen balance trials after partial deletion of dietary amino acids(AA) were conducted to investigate the ideal balance patterns of dietary digestible lysine(Lys),sulphur containing amino acid(SAA),threonine(Thr)and tryptophan(trp)for the growing(35 60kg)and finishing (60 90kg) pigs.Eighteen Yorkshire × Landrace crossbred castrates were employed for the trials.Six isoenergetic diets based on corn,soybean meal and corn gluten meal were prepared for each trial.They were basal diet(BD)with 16 1% and 14 9% crude protein(CP)for each stage,25% low CP diet(s) supplemented with all the four (positive control,PC)or with three of the four AAs to have an equal digestible AA content,except the examined one which was 25% lower than that in BD.The result showed that the ideal amino acid pattem expressed on digestible basis was Lys 100,SAA 49,Thr 72,Trp 19 for growing stage and Lys 100,SAA 34,Thr 64,Trp 23 for finishing stage of pigs.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
2001年第3期202-205,共4页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
基金
国家"九五"科技攻关专题!"猪预混料配方技术研究"的部分内容
