摘要
采用氨基酸部分扣除法研究了人工诱导免疫应激条件下仔猪可消化赖氨酸(DLys)、蛋氨酸(DMet)、色氨酸(DTrp)、苏氨酸(DThr)之间的平衡比例。结果表明:仔猪处于正常和免疫应激条件下的理想氨基酸模式存在差异,应激条件下,以可消化氨基酸为基础的这4种氨基酸的平衡比例为DLys 100、DMet 27、DTrp 29、DThr 59;正常条件下为DLys 100、DMet 30、DTrp 21、DThr 61。
Two nitrogen balance experiments were conducted to determine the optimum balance pattern among the four amino acids （lysine,methionine,tryptophan and threonine） in the diet on digestible basis for piglets （10kg） challenged with lipopolysaccharide or with saline as control. The method of amino acid deletion was adopted. All pigs were of a single genetic background and geographical site of origin. In each group fifteen Landrance × Rongchang castrated piglets were allotted randomly to one of five groups of dietary amino acid regimens. Positive control group was supplemented with four amino acids. One of the four amino acids was deleted by about 25% in the respective treatment groups. After the nitrogen-balance experiments,the slaughter technique was introduced to determine the ideal amino acid digestibility of the positive control by using chromium oxide（3g/kg） as the indicator. The results showed that the ideal amino acid pattern of Lys ： Met ： Thr ： Trp on the digestible basis was 100 t 27： 29： 59 for 10-kg pigs under immunologic stress, and 100 ：30： 21： 61 for piglets under normal condition.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
2006年第1期34-37,共4页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
基金
国家自然科学基金项目(39870606)
四川省自然基金预研项目(2000-C04)
关键词
氨基酸模式
免疫应激
仔猪
脂多糖(LPS)
ideal amino acids pattern
immunologic stress
piglets
lipopolysaccharide
