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Correlation Studies Between Nutritional Composition of Mulberry Leaves and Economic Characters of Silkworm, Bombyx Mori Feeding Different Mulberry Leaves

M A QAder
BSRTI, Rajshahi

Abstract/ Executive Summary:

Correlation coefficient of the nutritional composition of different mulberry leaves with economic mracters of silkworm, Bombyx mori revealed that majority of the nutrient components of mulberry af except.total mineral content showed significant direct positive relationship with economic laracters of silkworm which varied greatly due to the nutritonal differences of different mulberry aves fed the silkworm, Bombyx mori L.

Keywords: Correlation, Mulberry nutrition, Economic characters, Bombyx mori

Location: Bangladesh Sericulture Research and Training Institute

Start Date:

End Date:

Program Area: Socio-economic and Policy

Commodity: Mulberry

Objectives:

To study the correlation studies between nutritional composition of mulberry leaves and economic parameters of silkworm feeding different mulberry leaves.

Methodology:

Two multivoltine silkworm races namely Urboshi-1 and Nistari tp) and two mulberry varieties viz. BM-2 and BM-3 were selected for this study. The experiment was conducted at the Bangladesh Sericulture Research and Training Institute, Rajshahi in 1995. The third instar silkworm larvae were taken at random and distributed in different groups and were fed with bush, lowcut and tree mulberry leaves throughout the larval period. Each treatment consisted of 100 larvae with three replications. The rearing was conducted thrice synchronised with three commercial rearing seasons practiced in Bangladesh following the methods of Krishnaswami (1978). Ten mature larval weight (LW) were recorded from all treatments before spinning. After cocoon formation, economic characters like cocoon weight (CW), shell weight (SW), length of filament (LF), fibroin (FbJ and sericin (Sr) contents of cocoon shell were measured. Nutrithc value of mulberry leaves were estimated thrice following the methods of AOAC (1980). Simple correlation coefficients were computated according to Steel and Torrie (1960).

Source of Information: Bulletin of Sericulture Research 1999 vol10:53-57 Published by Bangladesh Sericulture Research and Training Institute

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Present investigation suggested that nutrient content of mulberry leaves strongly influence the economic traits of which correlated differently due LO different types of mulberry leaves and that tree mulberry leaf might be exhibited better performance than lowcut and bush leaves in respect of the economic characters of silkworm. Bombux inori L.

Knowledge Management: Journal