| Popis: |
Fertility and hatchability serve as measures of genetic and reproductive fitness of individual bird. These two along with growth performance are important yardsticks in evaluating the economic efficiency of parent stocks. There is no previous study on the evaluation of Goliath and Sussex chickens for hatchability, growth and crossbreeding potentials in Nigeria. The present study was conducted to evaluate fertility, hatchability and early growth performance of Yoruba ecotype, Marshall, Sussex, Goliath and their crossbred chickens in Nigeria. A total of 895 eggs were used to evaluate fertility and hatchability of eggs. 583 chicks were used to evaluate early growth performance in the 10 genetic groups. Mean %Fertility of egg, %Hatchability of egg set and %Hatchability of fertile eggs were 74.44%, 61.50% and 82.09%, respectively. Crossbreeding (reciprocal) between Yoruba ecotype and either Marshall or Goliath chicken gave better fertility and hatchability than the cross between Yoruba ecotype and Sussex chicken. Reciprocal effects on fertility and hatchability and liveability generally favour the use of Yoruba ecotype cocks on exotic hens. Marshall chicks were significantly higher (p |
