Paper presents the results of selection on index with constraint (in which body weight at the 28th day would be unproved and feed conversion ratio between 14-21 days - kept constant) after 5 generation in contrast to the effects of selection for body weight alone. The index selection slightly modified the growth pattern. Feed conversion the index line after a few generations tended towards the value obtained in body weight line.

E. Michalska

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 19. Selection and quantitative genetics; growth; reproduction; lactation; fish; fiber; meat., , 103–106, 1994
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