【摘要】 为了确定饲喂鹅绒助长剂的鹅适宜首次拔毛时间和上下次拔毛时间间隔,利用对照组与试验组鹅各10只,分别从70日龄和第1次拔毛后的第36 d 开始,直至80日龄和首次拔毛后的第40 d,每隔1 d 观测各鹅颈下1/3、胸腹部和背部的血管毛根数和羽根血肉附着情况.结果表明,观测至80日龄和首次拔毛后第40 d 时,所测处,试验组无可见血管毛和血肉附着的羽根,而对照组却两者均存在.因此,饲喂鹅绒助长剂,进行养鹅拔毛时,适宜的首次拔毛时间是第80日龄,上下次拔毛的时间间隔为40 d.更多还原

【Abstract】 The maturity of feathers in neck,back,breast and abdomen of the geese takenrandomly from each of the treatment and control groups was observed to affirm first pluckingday and the time interval between two pluckings for feeding the feather and down growthpromoter.Based on the comparison of immature feathers and the feather roots with blood andmeat on them between the treatment and control groups,it was affirmed that the firstplucking day and the interval of two pluckings are 80 days of age after birth and 40 days afterfirst plucking,respectitively.更多还原