动物营养学报2012，Vol.24Issue(5)：804-814,11.DOI:10.3969/j.issn.1006-267x.2012.05.003
二次回归正交旋转组合设计优化1～21日龄肉仔鸡胆碱和蛋氨酸需要量
Optimizing Requirements of Choline and Methionine Using Quadratic Regression Orthogonal Rotation Combination Design for Broilers Aged 1 to 21 Days
摘要
Abstract
A research on choline and methionine requirements for broilers aged 1 to 21 days was carried out. A total of 480 one-day-old broilers were divided into 12 groups (4 replicates per group and each replicate had 10 broilers) in random. Groups 1- 8 were experiment groups, and Groups 9-12 were center groups. A diet with low levels of choline and methionine was used as a basal diet in this experiment. To study the influence of different choline and methionine levels on growth performance and slaughter performance, a two-factor combinational design of quadratic regression orthogonal rotation was used. The experiment lasted for 21 d. The results showed that a certain level of choline and methionine could improve average daily gain (ADG) , feed/gain (F/G) , dressing percentage and abdominal fat percentage of broilers aged 1 to 21 days. The response surface graphs showed that when methionine levels were 0. 50% - 0. 70% , the ADG was decreased with the reduction of choline levels. When methionine levels were 0. 42%- 0. 50% and choline levels were 1 300 -1 738 mg/kg, the F/G was minimum. When methionine levels were 0. 50% - 0. 70% , the dressing percentage was decreased with the increasing of methionine levels; when methionine levels were 0. 36% - 0. 50% , the dressing percentage was improved with the addition of choline. Abdominal fat percentage was decreased with the rise of choline levels; when choline levels were 1 300 - 1 920 mg/kg, abdominal fat percentage was decreased with the reducing of methionine levels. It can be concluded that the requirements of choline and methionine for optimal growth performance are 1 434 -1 631 mg/kg and 0. 47% , respectively. The requirements of choline and methionine for optimal slaughter performance are 1 984 mg/kg and 0. 49 % , respectively.关键词
胆碱/蛋氨酸/肉仔鸡/二次回归正交旋转组合设计/响应面Key words
choline/ methionine/ broiler/ quadratic regression orthogonal rotation combination design/ response surface分类
农业科技引用本文复制引用
王斯佳,蔡辉益,刘国华,闫海洁,廖瑞波,邓会玲,汤建平..二次回归正交旋转组合设计优化1～21日龄肉仔鸡胆碱和蛋氨酸需要量[J].动物营养学报,2012,24(5):804-814,11.基金项目
国家肉鸡产业技术体系建设专项(nycyts-42-G4-03) （nycyts-42-G4-03）
