INFLUENCE OF FORTIFICATION OF MULBERRY LEAF WITH PLANT EXTRACTS ON PERFORMANCE OF Bombyx mori L.
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Date
2007-10-08
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE
Abstract
An experiment was conducted to study the influence of fortification of
mulberry leaf with plant extract on performance of Bombyx mori.L. The silkworm
(PMxCSR2) reared on mulberry leaves sprayed with aqueous extract of Cucumis
sativus at 6 per cent concentration recorded significantly maximum food consumption
(80.02 to 123.57), food digestion (48.72 to 56.44), consumption index (0.98 to 0.467),
growth rate (0.401 to 0.316), efficiency of converstion of ingested food (40.56 to
29.12), efficiency of conversation of digested food (67.32 to 66.61), approximate
digestibility (61.31 to 46.55) during fifth instar larvae. Similarly sikworms reared on
mulberry leaves sprayed with plant extracts exhibited significant differences with
respect to economic traits and disease incidence. However, larval weight (2.94g),
ERR (97.28 %), cocoon weight (1.79g), shell weight (0.312g), pupal weight (1.48g),
shell ratio (17.70%), silk productivity (4.58cg/day), filament length (983.86m) and
filament weight (0.252g) were significantly maximum in C. sativus, besides reducing
the larval duration (6.89 days) and disease incidence (2.59%) compared to other
treatments. The order of plant extract which induced favourable effects on growth and
development, food consumption indices and economic triats in mulberry silkworms
(PMXCSR2) is Cucumis sativus > Emhlica officinalis > Citrus lemon (Linn.)
Burm.f >Ocimum sanctum L.+ Curcuma longa L.> Allium sativum L.+ Curcuma
longa L> Cicer arietinum L.
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