Vol. 5, Issue 5 (2020)
Effects of supplementary nutrients of amla and lime fruit extract on growth of silkworm Bombyx mori L
Author(s): Sayyad NR
Abstract: Sericulture depends on rearing of silkworm on mulberry leaves. For this reason, Silk production has direct relationship with larval growth. One of the alternative ways of improvement of larval growth and cocoon production is enrichment of mulberry leaves with supplementary nutrients. In order to investigate the effects of supplementary nutrients on silkworm, Bombyx mori, an experiment was conducted with multi-vitamins treatments. Leaves enriched with amla and lime fruit juice (1, 2 and 3%) were fed once a day to 5th instar silkworm larva. The supplementation of the leaves was done by spraying the treatments on them. These treatments resulted in a significant increase in biological and economical parameters such as larval weight, female and male cocoon weight, Oral supplementation of vitamin C (ascorbic acid) rich botanical extract to V instar silkworm Bombyx mori L. resulted in a significant increase in growth. Amla and lime fruit are the highest source of vitamin C (ascorbic acid). The supplementation of amla juice and lime juice different concentration had the positive impact on larval growth. The supplementation of amla juice at 2% and lime juice at 3% had the positive impact on larval growth that resulted in increased larval length (7.44 and 6.95 cm) and larval weight (42.21 and 39.33g). Vitamin C in the form of supplementation of amla juice at 2% and lime juice at 3% yielded significant gain in economic parameters like cocoon weight (16.72 and 16.67 g), pupal weight (14.74 and 14.88 g), shell weight (3.88 and 3.83 g) and shell ratio (23.21 and 22.98 %). The study showed that From above finding it can be said that maximum 2% amla fruit juice (T2) and 3% lime fruit juice (T6) after treatment significant increase in biological and economical parameters. So it can be said that positive impact on larval growth due to amla and lime fruit juice.