| 摘要: |
| 给4组共40只肉仔鸡分别强饲无氮饲粮(NFD)、NFD+ 32 g·kg-1酶解酪蛋白(EHC),及以豆粕为惟一氮源的粗蛋白质量浓度为50和200 g·kg-1的饲粮,于强饲后5min, 4, 24, 36及48 h,采集静脉血液,观测去蛋白血浆中诸氨基酸(PFAA)的变化规律。结果表明,PFAA浓度与采食饲粮氨基酸含量及食后时间呈复杂的函数关系。PFAA浓度仅可大致估计饲料氨基酸的有效性。 |
| 关键词: 肉仔鸡,饲粮,血浆氨基酸 |
| DOI： |
| 分类号:S831.5,S852.2 |
| 基金项目:国家自然科学基金资助项目（39970550） |
|
| Change regularity of plasma free amino acid content in broiler chicken |
|
|
| Abstract: |
| Four groups of total 40 broiler chickens were force-fed nitrogen-free diet
(NFD),NFD+ 32 g·kg-1 enezymatically hydrolyzed caesin (EHC) diet, and two other
diets with crude protein contents of 5% and 20% in which soybean meal (sol. )was the
sole nitrogen source, respectively.At 5 minutes, 4 hours, 24 hours, 36 hours and 48 hours
after force-feeding, venous blood samples (1. 5mL each time per chicken)were taken to
exam the contents of plasma free amino acids (PFAA).The results showed that the relationships between the PFAA contents and dietary amino acid contents, or between the
PFAA contents and the time after feeding were complex and different for each amino
acid, and PFAA contents could roughly estimate the availability of feed amino acid. |
| Key words: broiler chicken,dietary amino acids,plasma free amino acids |
