EFFECT OF HIBISCUS SABDARIFFA ON REARING PERFORMANCE OF SILKWORM , BOMBYX MORI L.

Document Type : Research articles.

Author

Plant Protection Department, Faculty of Agriculture, El Fayoum University, Egypt.

Abstract

Effect of Hibiscus sabdariffa as food additives on rearing
performance of silkworm,
Bombyx mori L. was studied. Dried flowers
of
H. sabdariffa were crushed and soaked in distilled water to prepare
different concentrations (20, 40, 60, 80 and 100 mg/ml.). The obtained
results showed that, the concentration 60 mg/ml. of
H. sabdariffa
occupied the first category. Where effective rate of rearing recorded
84.00% compared to 76.00% in control
, total haemolymph protein
mg/ml. recorded 70.54mg/ml. compared to 64.52mg/ml. in control and
number of eggs / female recorded 284.00 compared to 262.00 in
control. Cocoon indices were 1.165 g, 0.229 g and 19.66% for cocoon,
cocoon shell weights and cocoon shell ratio comparing to 1.067 g,
0.169 g and 17.71% for the control, respectively.


Main Subjects