TEST OF GENETIC TYPES FOR LOCAL EGG PRODUCTION IN MOROCCO - F1 (FAYOUMI X LEGHORN) AND ISA TERMINAL CROSS [French]

摘要

A F1 between a line of the Egyptian breed Fayoumi and an experimental Leghorn line was compared at the agricultural and veterinary Hassan-II Institute (Rabat, Morocco) with a commercial cross of a brown-egg layer type (ISA) for egg production in batteries, in a windowed uninsulated house of a classical type in Morocco. The laying percentage until the age of 70 weeks differed little between genetic types. Conversely, the mean egg weight was 10 g, inferior for the experimental cross and the feed efficiency of this cross was inferior to that of the commercial cross. The egg qualities (density percentage of shell, Haugh units) did not differ between the compared crosses, except the percentage of yolk, which was higher for the Fayoumi x Leghorn cross. The adult body weight of hens was similar for the 2 genotypes.