黑龙江林蛙半人工养殖放养技术

实践过程中针对养殖方法、产卵期、孵化期、变态期以及黑龙江林蛙日活动规律进行了对比分析。结论,在每年4月28日至5月12日期间出现产卵高峰;在5～7℃、10～12℃、14～15℃池水温度范围有较高孵化率;采用混合饲料喂养的蝌蚪变态率均在68%以上;黑龙江林蛙每天9～11时和15～17时活动频繁,是最佳喂食时间;冬季经过越冬池越冬后,选择春眠后放养的技术思路,来提高幼蛙成活率,起到冬眠后的缓冲作用。在放养场内散养期间,人工控制饵料投放量,促使黑龙江林蛙主动捕食场内野生昆虫,激发林蛙适应生态环境的潜在习性。

Stocking Technology of Semi-artificial Breeding About Heilongjiang Forest Frog

The process of practice for farming methods,spawning,hatching,metamorphosis and the rana day law were compared and concluded that from April 28 to May 12 the rana had a higher spawning rate;at 5-7℃,10-12℃,14-15℃ temperature range had a higher hatching rate;mixed fed the tadpole had a higher metamorphosis rate in more than 68%;at 9-11 and 15-17 clock the rana had a higher a ctivity rate,so it was the best feeding time;rana lived through the winter in winter pool and stocked after spring sleep,then the survival rate was improved and achieved hibernation of buffer role.Artificial control lure-analyses during the rana kepted time in stocking farm,in order to precipitate rana actively captured wild insects,inspire rana to adapt to the potential of the ecological environment habit.