누에 品種別 人工飼育의 明暗條件에 관한 硏究 = A Study on the Effects of Light Condition upon the Artificially-Dieted Silkworms

국문 초록 (Abstract)

누에 人工飼育에 필요한 종합적인 기술체계를 수립하기 위하여 原蠶을 全齡을 通하여 品種 및 光線條件을 달리하여 人工飼育한 결과를 要約하면 다음과 같다.
1. 털털이율은 光線의 明暗에는 큰 差異가 없었으나, 品種間에는 顯著한 差異를 보여 中國種의 蠶114, 蠶124는, 42∼56%로 매우 低調하였다.
2. 起蠶率은 暗條件에서 높았으며 日本種인 蠶123에서 83.6%로 가장 낮았고 起蠶重은 明條件에서 무거웠으며 暗條件下에서는 가벼운 傾向이었다.
3. 經過日數는 品種間에는 비슷하였으나 24L에서 1日정도 길었고 化踊比率은 蠶114를 除外한 品種은 全暗區에서 높은 傾向이었다.
4. 全繭層重은 明이 길어질수록 무거운 傾向을 보였고 繭長은 日本種이 中國種에 比하여 0.4∼0.59cm 程度 길었으며, 繭幅은 中國種이 日本種에 比하여 0.46∼0.56cm 넓은 傾向이었다.
5. 繭層比率은 明暗에 따라서는 큰 差異가 없었으며 蠶114區에서 16.08%로 가장 낮았고 正常卵我區는 蠶123, 蠶124, 蠶114, 蠶113順이었으며, 明暗의 差異에 따라 蠶113은 18L6D, 蠶114, 蠶123은 18D6L, 蠶124는 24L에서 높았다.
6. 正常産卵數는 蠶113, 蠶114는 18L6D, 蠶123, 蠶124는 24L에서 많았으며 不受精卵數는 대체로 24L區에서 많은 傾向이었다.

다국어 초록 (Multilingual Abstract)

The purpose of this study is to establish an automatized artificial rearing system for silkworm. Four varieties, Jam 113, 114, 123 and 124, were reared at different light(L) and darkness(D) conditions.
1. The bristling ratio was nearly the same regardless of the light condition, but it was greatly different between the varieties. The Chinese series of Jam 114 and 124 showed very low percentage of vegetation(42∼56%).
2. The rate of newly exuviated larva was higher in the darkness plots than in the light plots. The Japanese series of Jam 123 showed the lowest percentage of vegetation (83.6%). The newly exuviated weight was heavier in the darkness plots.
3. The larba progress term was not different, but became relatively longer by a day in the 24L plot. The puration rate was high in all the darkness plots except Jam 114.
4. The whole cocoon shell weight tended to be heavy, as a light kept being longer. The Japanese Jam was longer by 0.40∼0.59cm than that of the Chinese in the cocoon length. The Chinese Jam was 0.46∼0.56㎝ wider than that of the Japanese in the cocoon width.
5. The cocoon layer ratio was not affected by the light and darkness condition. The Jam 114 showed the lowest percentage(16.08%). Such Jams as 123, 124, 114 and 113 showed a good oviposition in that order. Jam 113 in 18L6D, Jam 114, 123 in 18D6L, Jam 124 in 24L showed high ratio, as the difference between light and darkness.