The objective of this paper is to analyze a system of diallel crosses among three lines of laying quails, in order to find the most appropriate lines for future crosses, based on economically relevant traits. The data were collected from 972 quails. Twelve birds per cage (experimental unit) were used, and nine replicates per progeny group were studied for 11 months. The following variables were measured: egg weight (EW), daily food intake per quail (DFI), weekly egg production per quail (WEP), laying percentage (LP), food conversion based on egg weight produced (FCW), food conversion based on 30-egg box produced (FCB) and mortality (M). No effect of general combining ability was observed for any trait in any period. All traits showed significant differences among genetic groups in all periods. The 1*2 cross showed the highest EW, and the 1*3 cross showed the best food conversion for egg weight and egg box and the lowest mortality rate. A reciprocal effect was detected only for EW; thus, crossing line 2 sires with line 1 will result in higher EW, an important trait when eggs are sold by weight.

A. A Ramos, A. Piccinin, E. N Martins, F. S Wechsler, H. C Goncalves, J. N Gimenez, C. Mori, C. Andrighetto

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 07.17, 2006
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