Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.

In cage-free systems, laying hens must lay their eggs in the nests. Selecting layers based on nesting behavior would be a good strategy for improving egg production in these breeding systems. However, little is known about the genetic determinism of nest-related traits. Laying rate in the nests (LRN...

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Autores principales:	Lorry Becot, Nicolas Bedere, Thierry Burlot, Jenna Coton, Pascale Le Roy
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/56718a4de1014ddaad94fa293e8ed93c
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spelling	oai:doaj.org-article:56718a4de1014ddaad94fa293e8ed93c2021-12-02T20:04:00ZNest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.1932-620310.1371/journal.pone.0251037https://doaj.org/article/56718a4de1014ddaad94fa293e8ed93c2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0251037https://doaj.org/toc/1932-6203In cage-free systems, laying hens must lay their eggs in the nests. Selecting layers based on nesting behavior would be a good strategy for improving egg production in these breeding systems. However, little is known about the genetic determinism of nest-related traits. Laying rate in the nests (LRN), clutch number (CN), oviposition traits (OT), and nest acceptance for laying (NAL) of 1,430 Rhode Island Red (RIR) hens and 1,008 White Leghorn (WL) hens were recorded in floor pens provided with individual electronic nests. Heritability and genetic and phenotypic correlations of all traits were estimated over two recording periods-the peak (24-43 weeks of age) and the middle (44-64 weeks of age) of production-by applying the restricted maximum likelihood method to an animal model. The mean oviposition time (MOT) ranged from 2 h 5 min to 3 h and from 3 h 35 min to 3 h 44 min after turning on the lights for RIR and WL hens, respectively. The mean oviposition interval ranged from 24 h 3 min to 24 h 16 min. All heritability and correlation estimates were similar for RIR and WL. Low to moderate heritability coefficients were estimated for LRN (0.04-0.25) and moderate to high heritability coefficients for CN and OT (0.27-0.68). CN and OT were negatively genetically correlated with LRN (-0.92 to -0.39) except during peak production for RIR (-0.30 to +0.43). NAL was weakly to moderately heritable (0.13-0.26). Genetic correlations between NAL and other traits were low to moderate (-0.41 to +0.44). In conclusion, CN and OT are promising selection criteria to improve egg production in cage-free systems. NAL can be also used to reduce the number of eggs laid off-nest in these breeding systems. However, variability in MOT must be maintained to limit competition for the nests.Lorry BecotNicolas BedereThierry BurlotJenna CotonPascale Le RoyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 5, p e0251037 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lorry Becot Nicolas Bedere Thierry Burlot Jenna Coton Pascale Le Roy Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
description	In cage-free systems, laying hens must lay their eggs in the nests. Selecting layers based on nesting behavior would be a good strategy for improving egg production in these breeding systems. However, little is known about the genetic determinism of nest-related traits. Laying rate in the nests (LRN), clutch number (CN), oviposition traits (OT), and nest acceptance for laying (NAL) of 1,430 Rhode Island Red (RIR) hens and 1,008 White Leghorn (WL) hens were recorded in floor pens provided with individual electronic nests. Heritability and genetic and phenotypic correlations of all traits were estimated over two recording periods-the peak (24-43 weeks of age) and the middle (44-64 weeks of age) of production-by applying the restricted maximum likelihood method to an animal model. The mean oviposition time (MOT) ranged from 2 h 5 min to 3 h and from 3 h 35 min to 3 h 44 min after turning on the lights for RIR and WL hens, respectively. The mean oviposition interval ranged from 24 h 3 min to 24 h 16 min. All heritability and correlation estimates were similar for RIR and WL. Low to moderate heritability coefficients were estimated for LRN (0.04-0.25) and moderate to high heritability coefficients for CN and OT (0.27-0.68). CN and OT were negatively genetically correlated with LRN (-0.92 to -0.39) except during peak production for RIR (-0.30 to +0.43). NAL was weakly to moderately heritable (0.13-0.26). Genetic correlations between NAL and other traits were low to moderate (-0.41 to +0.44). In conclusion, CN and OT are promising selection criteria to improve egg production in cage-free systems. NAL can be also used to reduce the number of eggs laid off-nest in these breeding systems. However, variability in MOT must be maintained to limit competition for the nests.
format	article
author	Lorry Becot Nicolas Bedere Thierry Burlot Jenna Coton Pascale Le Roy
author_facet	Lorry Becot Nicolas Bedere Thierry Burlot Jenna Coton Pascale Le Roy
author_sort	Lorry Becot
title	Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
title_short	Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
title_full	Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
title_fullStr	Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
title_full_unstemmed	Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
title_sort	nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/56718a4de1014ddaad94fa293e8ed93c
work_keys_str_mv	AT lorrybecot nestacceptanceclutchandovipositiontraitsarepromisingselectioncriteriatoimproveeggproductionincagefreesystem AT nicolasbedere nestacceptanceclutchandovipositiontraitsarepromisingselectioncriteriatoimproveeggproductionincagefreesystem AT thierryburlot nestacceptanceclutchandovipositiontraitsarepromisingselectioncriteriatoimproveeggproductionincagefreesystem AT jennacoton nestacceptanceclutchandovipositiontraitsarepromisingselectioncriteriatoimproveeggproductionincagefreesystem AT pascaleleroy nestacceptanceclutchandovipositiontraitsarepromisingselectioncriteriatoimproveeggproductionincagefreesystem
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Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system.

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