Vol. 5, Issue 1 (2017)
Growth studies of popular silkworm (Bombyx Mori L) breeds influenced by dietary supplementaion of synthetic and phyto -ascorbate
Author(s): Aabid Khaliq Tantray
Abstract: Three popular silkworm breeds CSR2, CSR4 and PM were fed with three different sources of ascorbate viz., synthetic, crude quantified plant extract and ascorbate purified from plant. Supplementation was carried out with the already identified potential ascorbate doses during large-scale bioassay. Bivoltine breeds (CSR2 and CSR4) were fed with 0.05% ascorbate in crude Amla fruit extract (C) and 0.5% dose of synthetic (S) and purified ascorbate (P) in water. In case of multivoltine breed (Pure Mysore), 0.30% dose of “C”, 3.00% of “S” and “P”were prepared in water. Daily larval and gonadal growth of three popular silkworm breeds CSR2, CSR4 and PM were recorded. In multivoltine breed, PM, no significant change was observed in the given traits with any of the three treatments. However, bivoltine breeds, CSR2 and CSR4, larval weight from 0 day of 5th instar to the 5th day was increased from 4.52 to 4.92 times over their controls (4.26 & 4.47 times). Improvement was more in 5th instar gonad weights than in larval weight. The 5th instar gonad weights were improved to the extent of 10.83 to 15.87% and 14.29 to 15.71% respectively vis-à-vis larval weight which increased only to the tone of 5.92-10.09% in bivoltine breeds (CSR2 and CSR4). There was a proportionate change in the tissue somatic index of gonad of treated and control larvae. The study gives an impression that ascorbate exerts its impact mainly on gonad than whole larval body. Further, in multivoltine silkworm breed, PM, gonad- tissue -somatic index was relatively higher than all the breeds studied. This appears likely that the gonads in the PM breed grow at relatively faster rate than rest of the silkworm breeds used.
Pages: 222-226 | 1053 Views 24 Downloads
How to cite this article:
Aabid Khaliq Tantray. Growth studies of popular silkworm (Bombyx Mori L) breeds influenced by dietary supplementaion of synthetic and phyto -ascorbate. Int J Chem Stud 2017;5(1):222-226.