【摘要】 对自然孵育条件下3只大紫胸鹦鹉的生长发育情况进行了观察与分析,表明大紫胸鹦鹉的平均出壳重为(13.80±2.79)g,60日龄平均体重为(265.33±39.03)g。体重与日龄的关系为W=8.55+5.61×D(0～50日龄);出壳时嘴峰短于嘴裂,45日龄时嘴峰长度超过嘴裂,60日龄时嘴峰嘴裂的平均长度分别为(27.00±1.00)mm和(24.00±0.87)mm。在育雏过程中,雏鸟的羽色变化明显。更多还原

【Abstract】 Weight and body measurements of three chicks of Psittacula derbiana were taken five days.The average body weight of new hatch chicks is(13.80±2.79)g.The average weight of 60 day old chicks is(265.33±39.03)g.The results indicate the relationship between weight and days is W=8.55+5.61×D(0-50 d).The culmen is shorter than rictus of the new hatch,and the culmen is longer than rictus on the 45 days.The average length of culmen and rictus is(27.00±1.00)mm and(24.00±0.87)mm on the 60 days,respectively.The feather color of these chicks changes distinctly during its growing process.更多还原