Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 1
Written by Georgeta DINIȚĂ, Monica Paula MARIN, Minodora TUDORACHE, Ioan CUSTURĂ, Andra Dorina ȘULER
The practicing of mating the individuals with a certain kinship degree leads to ostaining of inbreed lines through which crossing are ostained descendants characterized by performances superior to parental populations average.Using the inbreed lines in the hybridization process has as final result the obtaining of commercial hybrids. This is easily achievedin silkworms, species characterized by a short interval between generations and by high prolificity. Thirty silkworm inbreed lines were studied during six generations and the effect of the inbreeding on some physiological characteristics. The prolificity ranged between 632-494 eggs/layinginside the White Baneasa lines and 748-522 eggs/layingin Baneasa 75 lines. The number of eggs/layingwas lower at I6whit 10.39% in Baneasa 75 lines and 11.41% in White Baneasa lines by comparision with I0. Hatching percentage was affected by inbreeding depression beginning with I3 in both lines groups. This was lower with 6.10-15.66 percentages in White Baneasa lines and 6.80-15.90 percentages in Baneasa 75.
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