A line (E) of turkeys selected long-term (37 generations) for increased egg production was reciprocally crossed with its randombred control population (RBC1) that served as the base population of the E line to study the influence of long-term selection on the development of nonadditive genetic variation for egg production and body weight traits. Heterosis was significant for BW at 8, 16, and 20...

The review summarizes the production and reproductive performance of indigenous chicken in Ethiopia. Even though total population is high enough (98%) than other exotic crossbreeds, gain from poultry sector still low. Thus, was encountered under free-range systems with low input for sector, which limits profit due to egg production, small size, slow growth rate, late maturity, clutch intensive ...

Egg production rate is a positive economical factor in commercial laying hens. In egg industry, the only source of income is the number and weight of eggs laid in a laying cycle, therefore, researchers have been trying to find approaches to increase the egg number in each laying cycle. In general, a hen lays eggs in clutches with a pause of one or a few days in between the clutches (pause days)...