Rearing performances of Indian Temperate Tasar Silkworm, Antheraea proylei Jolly fed on Quercus serrata (Carruther), Quercus griffithii (Hook & Thomson) and Lithocarpus dealbata (Hook & Thomson) during Autumn crop

摘要

 Studies were conducted to evaluate the rearing performances of Oak tasar silkworm, Antheraea proylei on three different food plants during autumn crop at Regional Tasar Research Station, Central Silk Board, Mantripukhri, Imphal. The rearing performances of A. proylei fed on Quercus serrata (1:24.26) had shown highest cocoon productivity than Quercus griffithii (1:21.33)and Lithocarpus dealbata (1:11.99). Though, the overall better rearing performance in terms of larval duration, cocoon yield , ERR % was observed with Q. serrata fed larvae, however in terms of economic parameters, Q. griffithii fed larvae recorded higher shell weight (1.01) and silk ratio (12.23%) than Q. serrata (0.91 shell wt.; 11.16 SR%). The highest growth rate in terms of length (6.181? 0.07), breadth (1.221 ? 0.003) and weight (7.470 ? 0.11) of the 5th instar larvae was also recorded with larvae fed on Q. griffithii