Segregation of the black breed from chinchilla rabbits

1. Genic composition of the chinchilla rabbits and their offspring

Abstract

This paper deals with the descriptions of the genic composition of the chinchilla rabbits and their offspring with black, dilute and white coats. In 132 litters with 808 offspring in total which were produced from the crossing of chinchilla rabbits, 694 chinchillas (85.9%), 44 dilute chinchillas (5.4%), 40 black (5.0%), and 30 white rabbits (3.7%) were produced. In reference to the gene symbols given for rabbit coat color by Castle (1930), the genic composition for the dilute, black and white rabbits are represented by the formulae, AA BB c^chc^ch dd EE, aa BB c^ch c^ch DD EE, and ?? ?? cc ?? ??, respectively. In the crossing of the black rabbits there arised four individuals with black coats which are supposed to have the composition of aa c^chc^ch Dd. This suggests a possibility in producing the black rabbit laving aa c^chc^ch DD, a pure black producer.