Effecf of different photoperiods and daily number of feeds on some biological and technological aspects of the mulberry silkworm, Bombyx mori L. [electronic resource].

By: Contributor(s): Language: English Summary language: Arabic Description: p.193-207Other title:
  • تأثير الفترة الضوئية وعدد مرات التغذية على بعض الصفات البيولوجية والتكنولوجية لدودة الحرير التوتية.‪‪ [Added title page title]
Uniform titles:
  • Zagazig journal of agricultural research, 2011 v. 38 (1) [electronic resource].
Subject(s): Online resources: In: Zagazig Journal of Agricultural Research 2011.v.38(1)Summary: Fifth instar mulberry silkworm larvae were exposed to 2 regimes of photoperiod, i.e., lSL:9D, 17L:7D compared with 13L:llD (control). Such larvae were offered 4,5 and 6 feeds / day in each photoperiod regime at spring rearing seasons of 2005 and 2006. The effects of such treatments on some biological and technological parameters were studied. The results showed that rearing silkworm larvae during 5th instar under 15L or 17L increased significantly the weight of mature larvae, silk gland, male pupa, fresh male cocoon, cocoon shell and size of silk filament (in denier) during the two investigated seasons.
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Fifth instar mulberry silkworm larvae were exposed to 2 regimes of photoperiod, i.e., lSL:9D, 17L:7D compared with 13L:llD (control). Such larvae were offered 4,5 and 6 feeds / day in each photoperiod regime at spring rearing seasons of 2005 and 2006. The effects of such treatments on some biological and technological parameters were studied. The results showed that rearing silkworm larvae during 5th instar under 15L or 17L increased significantly the weight of mature larvae, silk gland, male pupa, fresh male cocoon, cocoon shell and size of silk filament (in denier) during the two investigated seasons.

Summary in Arabic.

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