Best F1 crossbreedings and hybrid reproducers as maternal lines for commercial rabbit production
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Abstract
b) (crossbreeding) breeding parameters according to Dickerson, and c) racial effects and breeding parameters of the numerical and ponderable productivities of pure and crossed genotypes. The best F1 crossings were NS, CS, CCH, SCH, SN and CHN. Breeding parameters demonstrated the superiority of maternal effects on Semi-giant and New Zealand, and direct effects on California and Chinchilla. Heterosis was high for pre-weaning traits (12-20 %). The evidence of the best crossings, estimation of breeding parameters of crossbreeding that ratifies the policy of racial use and pre-weaning productivities of each breed and crossing, as well as the
proposal of a methodology for the integral evaluation of crossings
constitute contributions to knowledge and characterize the genetic
and heterotic potential of our breeds, their racial utilization and the
selection of the best crossbreeds for commercial production. All these elements constitute the essential bases for the decision making in the Programa Nacional de Mejoramiento Genético of the rabbit.
Key words: rabbits, crossbreeding, productivity, breeding parameters
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