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    Determination of the Effect of Age of Broiler Breeders on General Performance, Egg Interior-Exterior Quality and Some Incubation Features
    (ISRES Publishing, 2019) Yildirim, Hakan; Akcimen, Zekeriye
    In this study, the effect of age on the performance of broiler breeders, egg interior-exterior quality and hatching characteristics were determined. The study was conducted on a total of 6900 broiler on Ross 308 genotype. In addition to this, the rate of male-females was 1/10, and 690 cocks were used. Broilers were divided into 3 treatment groups (23-34, 35-49, 50-61 weeks). Under each age treatment 4 replicates and 575 birds with similar live weights were coincidentally placed. The study continued for a total of 39 weeks, starting at 23 weeks of age and up to 61 weeks of age. During the experiment, 1170 eggs were collected on the same day each week for the purpose of determining 30 egg internal-external quality characteristics. In the study, the effect of age on egg yield, feed consumption, feed convertion ratio, live weight, egg weight, shell thickness, shell weight, shape index, yolk index, white index, Haugh unit, fertilization rate, infertil egg ratio, hatchability of fertil egg, embryo deaths, hatching efficiency, number of double yolked egg, number of thin shelled egg, number of nonhatching egg was significant (P <0.05), while the effect on shell breaking resistance and number of dirty eggs was not significant (P> 0.05). According to the findings of the study, age was found to be an effective factor on performance, egg quality and hatching characteristics. © 2019 Published by ISRES.