Differences in oviposition and egg quality of various genotypes of laying hens

Eva Tůmová, Jana Vlčková and Darina Chodová
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Jana Vlčková: Czech University of Life Sciences Prague, Prague, Czech Republic
Darina Chodová: Czech University of Life Sciences Prague, Prague, Czech Republic

Czech Journal of Animal Science, 2017, vol. 62, issue 9, 377-383

Abstract: The differences in egg production traits in six laying hen genotypes (brown-egg hens Bovans Brown, Bovans Sperwer, ISA Sussex; white-egg hen Dekalb White; laying hens with tinted shells Moravia Barred and Moravia BSL) and the interactions of genotype and oviposition on egg quality were evaluated. The genotype affected the laying rate (P ≤ 0.003), mean sequence length (P ≤ 0.001), and time of oviposition (P ≤ 0.001). The brown-egg genotypes laid eggs approximately 1 h earlier than the white-egg genotypes and approximately 2 h earlier than the tinted-egg genotypes. Egg shell strength was the lowest in tinted-egg genotypes (P ≤ 0.001) and declined with the time of oviposition (P ≤ 0.002). Egg shell percentage (P ≤ 0.011) and thickness (P ≤ 0.011) were affected by the interaction of genotype and oviposition. None of the effects affected egg weight; however, the proportion of egg components was significantly influenced by the interaction of genotype and oviposition. The study confirmed that the differences in the egg production and egg quality of various genotypes are associated with the laying pattern.

Keywords: layers; genotype; sequence; time of collection; egg quality (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:62:y:2017:i:9:id:22-2017-cjas

DOI: 10.17221/22/2017-CJAS

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