摘要 : An experiment was carried out to assess the effect of standardized feed additives on rearing parameters of mulberry silkworm hybrids CSR₂ x CSR₄ and ND₇ x CSR₂ (Jayalakshmi). The results... 展开 An experiment was carried out to assess the effect of standardized feed additives on rearing parameters of mulberry silkworm hybrids CSR₂ x CSR₄ and ND₇ x CSR₂ (Jayalakshmi). The results revealed that maximum weight of fourth instar (2.380 g, 2.360 g; 2.360 g, 2.330 g) and fifth instar (3.906 g, 3.890 g; 3.670 g, 3.633 g), effective rate of rearing (91.70, 91.57, 94.70, 94.62%), lower percentage disease incidence (6.26, 6.37; 3.60, 3.63), shorter fourth (4.19, 4.22; 4.14, 4.16 days/h), fifth instar larval duration (7.03, 7.05. 7.01, 7.03 days/h) and hence shorter total larval duration (28.05, 28.07, 27.08, 27.11 days/h) were registered in H₁D₁FA₄, H₁D₂FA₄, H₂D₁FA₄ and H₂D₂FA₄, respectively with horse gram+grain amaranthus flour (50:50) feed additive application daily once and alternate day application from fourth instar up to spinning in both hybrids. 收起