饲养天蚕温度与幼虫生长发育的研究

采用20℃、25℃和30℃，稚蚕1-3龄期，相对湿度70％，大蚕4～5龄期，相对湿度75％，饲养天蚕幼虫，探讨天蚕幼虫在不同温度下的食叶量、消化量以及消化率，对天蚕幼虫的生长发育速度以及茧质等方面进行试验调查。结果表明：25℃区的各项指标优于30℃区和20℃区。5龄期叶丝转化率，雌、雄平均茧层率25℃区8．0％〉30℃区7．5％〉20区6．7％。可确认适宜的饲养温度：1-3龄的稚蚕为25℃～28℃，湿度70％；4～5龄的大蚕为22℃-24℃，湿度为75％。

Studies on the Temperature of Raising Giant Silkworm and the Larva Development

The growth rate of Giant silkworm larvae and the cocoon qualities were investigated to discuss the amount of eating and digesting leaves and the digestibility on the temperatures at 20℃,25 and 30℃;and the relative humidity at 70% using young Giant silkworm 1~3 instars,and at 75% using grown Giant silkworm 4~5 instars.The results showed that the larvae at 25℃ district were better than at 30℃ and 20℃.The conversion rate of leaf to silk at the age of 5 instars,which is the average rate of the male and female cocoon shell and the highest was 8.0% at 25℃ district,the second was 7.5% at 30℃ and the worst was 6.7% at 20℃.So that the raising temperatures of the young Giant silkworm at the age of 1~3 instars were between 25℃~28℃;the relative humidity of the young Giant silkworm was 70% and the grown Giant silkworm 4~5 instars was 75% were the conclusions.