Selection for uniformity in Alexandria local chickens: 2-Correlated response for productive and reproductive traits [electronic resouce].

Includes references.

Four lines of Alexandria strain were used: selected egg line (EL). selected meat line (ML) and their controls (CEL&CML). The present study was performed for propose of increasing uniformity in Alexandria chickens. Eight weeks body weight and also age of sexual maturity were estimated in all populations. In the meat line selection was done for increasing uniformity for eight weeks body weight so the female chicks which in range (x' ± S.D.) and the male chicks which in range (x' ± 0.5SD.), where were chosen as parents for the next generation and all chicks above or lower than these ranges were discarded. While in the egg line selection was done for increasing uniformity for age of sexual maturity so the layers which in range (x ±S.D.), where were chosen as dams the next generation and all layers above or lower than this range were discarded Males which will be the sirs were taken at random. The males and females of each control line were taken at random from their population.

Summary in Arabic.

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