Abstract
Testing 4 mulberry silkworm (Bombyx mori L.) breeds in order to rend more efficient their breeding was the aim of our study. The analyze of the correlation between intake – egests and biological indices of the larvae in IVth and Vth ages, was also performed. The results based on the comparative study concerning the rhythm of increasing larvae length and weight show the variation of this trait from one age of the larvae stage to another. The larvae length positively or negatively influences the larvae weight (larvae length and weight record the same sense of variation). No positive correlation between consumption coefficient, digestibility, length and weight was recorded. Our results represent the starting point for the analyze of the consumption traits – biological indices of the larvae and biological indices of the crude and dry cocoon.
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