Effect of the covered-rearing with plastic film on the growth and development of grown silkworm
Effects of the plastic film covered rearing with two feedings a day on the growth and development of grown silkworm (4-5 instar) were studied in this paper. Results showed that under conditions of covering with plastic film for 10-20 h per day and decreasing feeding times from 4 times per day to 2 t...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2001-03-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2001.02.0221 |
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| Summary: | Effects of the plastic film covered rearing with two feedings a day on the growth and development of grown silkworm (4-5 instar) were studied in this paper. Results showed that under conditions of covering with plastic film for 10-20 h per day and decreasing feeding times from 4 times per day to 2 times per day in grown silkworm stage, no any negative effects on the duration of 4th instar, body weight, molting regularity, ingestion and digestion of mulberry leaves, leaf-silk conversion rate, yield and quality of cocoon were found except that duration of 5th instar were cutted shord 2 h, and that the someitems shell slightly increased. It was feasible to covering with plastic filmfor 10-20 h per day and decreasing feeding times to two times per day if a proper rearing management was accepted. |
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| ISSN: | 1008-9209 2097-5155 |