Table 1.

Main features of the populations sampled for the creation of the French Avian Cryobank

Name	Y33	R+	B4/B4	Gauloise dorée
Status	———Closed experimental lines———			Old breed
Owner	———INRA———			Fancy breeders
Selected trait	Growth and muscle development	Residual food intake	Major histocompatibility complex	No selection, open air, no vaccination
Number of generations	18	26	28	Not relevant
Mean inbreeding rate at sampling, %	14	50	76
Mean number of alleles at microsatellite markers	Unknown	2.7	Unknown	3.5
Mean fertility with fresh semen and artificial insemination, %	75	65	50	Not known