Effects of the moment of egg transfer to the hatcher and broiler breeder age on the incubation yield

V.M. Barbosa J.S.R. Rocha N.C. Baião P.M.M. Mendes M.A. Pompeu L.J.C. Lara D.J.A. Miranda G.B. Carvalho D.M. Cardoso C.E. Cunha N.R.S. Martins R.C. Leite About the authors

We evaluated the effects of the moment of egg transfer to the hatcher and broiler breeder age on the incubation yield. The treatments were defined by Cobb ® broiler breeder age, separating young breeders (33 weeks old) from older breeders (63 weeks old) and the moment of transfer from incubation chamber to the hatcher (at 15, 17 and 19 days). The experimental design was completely randomized split plot. The plots factor was the three times of transfers and the subplots the two breeder ages, with 18 replicates per treatment. A tray of 96 eggs was considered replay, totaling 1728 eggs for each treatment. Eggs from older breeders are heavier, lose more weight during incubation and fertility rate is lower (p<0.05), regardless of the moments of eggs transfer. Regardless of the breeder age, the transfer of eggs from the incubator to the hatcher at 15, 17 or 19 days of incubation does not interfere in embryonic mortality, hatchability and chick weight at hatch. You can adapt the transfer management to the logistic needs of the hatchery or reduce the period of egg incubation in the machine to increase the flow of production with no losses in incubation yield.

incubation; broiler breeders; age; transfer; physical factors

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