【摘要】 本文给出了产蛋率的样条优化回归分析方法,并应用于杭州市蛋鸡试验场法国ISA蛋鸡的产蛋率数据。计算的主要结果表明:该场早期的产蛋高峰期比法国标准早两周左右,而日产蛋率比法国标准早两周左右,而日产蛋率比法国标准低38‰。在衰老阶段,日产蛋率每周下降6.3‰,而法国标准每周下降5.6‰;7月份的夏季炎热天气平均使日产蛋率下降5％。更多还原

【Abstract】 Spline optimization regression analysis methods were applied to get the data of egg laying rate of French ISA layer in Hangzhou Layer Experiment Farm. The main results showed that the periold of egg laying peak was about two weeks earlier than French standard, and the egg laying rate was averagely 38‰ per day lower than French standard; while in the senior period, the egg laying rate fell on an average at the rate of 6.3‰ per week, as against 5.6‰ per week of French standard. The hot summer of July made the egg laying rate drop 5%/day on an average.更多还原