Document Type : Original Article
Authors
1
Department of Plant Production, Faculty of Technology and Development, Zagazig University, Egypt
2
Department of Plant Production, Faculty of Technology &Development, Zagazig University, Egypt
3
Plant Protection Research Institute, A.R.C., Dokki, Giza – Egypt.
Abstract
The present investigations were carried out during two spring seasons, 2019-2020 in the silkworm laboratory of Sericulture Department of Plant Protection Research Institute, Sharkia Branch to investigate the effect of fenugreek, pumpkin and sweet almond oils on silk production of mulberry silkworm Bombyx mori L.
The obtained results cleared that all of these plants oils, fenugreek; pumpkin and sweet almond oils composed of many methylated fatty acids fraction which have many effects of fresh cocoon weight, shell cocoon weight, silk ratio, silk filament weight and size, whereas the fenugreek oil consisted of forty-eight compounds (Hexadecanoic acid, methyl ester, 9-Octadecenoic acid (Z)-, methyl ester, 9,12-Octadecadienoic acid (Z,Z)-, methyl ester and Hexadecanoic acid, methyl ester etc…..), pumpkin consisted of seventy-two ( 9,12-Octadecadienoic acid (Z,Z)-, methyl ester, Hexa decanoic acid, methyl ester, Methyl stearate, Dodecanoic acid, methyl ester and Tridecanoic acid, 12-methyl-, methyl ester etc…..)and sweet almond oil consisted of sixteen compounds (Hexadecanoic acid, methyl ester, 9,12-Octadecadienoic acid (Z,Z)-, methyl ester, 9-Octadecenoic acid (Z)-, methyl ester, Methyl stearate and Hexanal dimethyl acetal etc….). Fenugreek, pumpkin and sweet almond oils improved cocoon indices and silk filament characters as a profitable supplementary diet for silk worm Bombyx mori L.
Conclusively, the fenugreek, pumpkin gave the highest mean of silk filament length. Fenugreek, sweet almond and pumpkin oils improved cocoon indices and silk filament characters as a profitable supplementary diet for silk worm Bombyx mori L.
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