Effect of mulberry leaf dipping in various nutritional ingredients on life cycle and economic traits of silkworm
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Date
2014-05-31
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Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Abstract
The experiment was conducted on effect of mulberry leaf
dipping in various nutritional ingredients on silkworm at Department of
Agricultural Entomology, College of Agriculture, Latur. The experiment
was conducted during January - February 2014 using CSRi double hybrid
silkworm. The laboratory experiment was conducted in randomized block
design with three replications.
The significantly shortest larval duration (28.76 days),
highest moth emergence (95.66 per cent ), highest fecundity (577.33
eggs) and highest egg hatching percentage (96.16 per cent) were noticed
in treatment T3 i.e. mulberry leaves dipped in 0.2 % N + 0.1% P + 0.3 %
K + 0.2 % ascorbic acid (Vit. C).
The significantly highest weight of ten matured larvae
(48.61 g),lowest disease incidence (1.34 per cent), highest effective rate
of rearing (ERR)(98.66 per cent), single cocoon weight (1.98 g), single
shell weight (0.39 g), cocoon yield per 10000 larvae brushed (18.50 kg),
cocoon filament length (976.33 m) and cocoon filament weight (0.250 g)
were recorded in silkworm larval fed mulberry leaves dipped in 0.2 % N
+ 0.1% P + 0.3 % K + 0.2 % ascorbic acid (Vit. C).
The significantly lowest pupal duration (11.75 days) were
recorded in silkworm larvae fed with mulberry leaves dipped in 0.2 % N
+ 0.1 %P + 0.3 %K.
The significantly highest denier value (2.386) recorded in
silkworm larvae fed with mulberry leaves dipped in 0.2 % N + 0.1 % P +
0.3 % K + 0.15 % Manganese (Mn) + 0.1% Calcium (Ca). The highest
cocoon- shell ratio (20.95 per cent) recorded in silkworm larvae fed
mulberry leaves dipped in 0.2 % N + 0.1 % P + 0.3 % K + 0.15 %
Manganese (Mn).
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