Journal of Sericultural and Entomological Science (한국잠사곤충학회지)
- Volume 9
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- Pages.35-38
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- 1969
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- 2234-8174(pISSN)
The effect of feeding amount on the metric Characters of silkworm at each day of 5 th instar
5령일수별급상량의 증감이 가잠실용형질에 미치는 영향
Abstract
This study was carried ont to investigate the effect of feeding amount on the metric characters of silkworm at each day of 5 th instar. The results obtained from the study are summarized as follows: 1. The increased amount of feeding did not affect on the metric characters except the character, number of cocoon per litre, by each day of 5 th instar. 2. The decreased amount of feeding did affect the weight of cocoon, weight of cocoon layer and did not affect the pupation, best cocoon rate, cocoon layer rate and number of cocoon per litre by each day of 5 th instar. Namely, the weight of cocoon or weight of cocoon layer was decreased by 12 to 17 per cent in decreasing amount of feeding through 5 th instar. Weight of cocoon or cocoon layer decreased by 5 per cent in the decreasing amount of feeding at just 7 th day of 5 th instar.
5령일수별급상량의 증감이 가잠 실용형질에 미치는 영향은 다음과 같다. 1 5령 전기간 표준급상량한것보다 5령일수별로 30%증가 급증한것은 실용형질중 1
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