Survival of laying hens: genetic parameters for direct and associative effects in three purebred layer lines

Poultry Science
Esther D EllenPiter Bijma

Abstract

Mortality due to cannibalism is a major problem in laying hens. Due to prohibition of beak-trimming in the European Union, this problem will increase in the near future. One solution to reduce mortality due to cannibalism is to use genetic selection. Mortality due to cannibalism, however, differs from conventional breeding traits, because it depends on social interactions among individuals. Selection strategies aiming to reduce cannibalism, therefore, should consider both the direct effect of an individual on its own survival and the social effect of the individual on the survival of its group members (the so-called associative effect). Traditional breeding, however, accounts for only the direct effect. Recently, methods have been proposed to estimate variance components and breeding values for both direct and associative effects. This paper presents estimated genetic parameters for direct and associative effects on survival days in 3 purebred laying lines. For the analysis, 16,780 hens with intact beaks were used. When considering only direct effects, heritabilities ranged from 2 through 10%. When considering both direct and associative effects, the total heritable variance, expressed as a proportion of phenotypic variance, ra...Continue Reading

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Citations

Jul 31, 2013·Genetics, Selection, Evolution : GSE·Katrijn PeetersPiter Bijma
Jan 28, 2014·Genetics, Selection, Evolution : GSE·Hanne M NielsenIngrid Olesen
Jun 3, 2014·Genetics, Selection, Evolution : GSE·Tessa BrinkerEsther D Ellen
Jul 16, 2013·The American Naturalist·William C RatcliffR Ford Denison
Dec 15, 2015·Evolution; International Journal of Organic Evolution·Esther D EllenPiter Bijma
Feb 28, 2009·Evolution; International Journal of Organic Evolution·Joel W McGlothlin, Edmund D Brodie III
Jan 13, 2009·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·R J C Cantet, E P Cappa
Sep 1, 2010·Evolutionary Applications·Michael J WadeWilliam Muir
Apr 17, 2010·Evolution; International Journal of Organic Evolution·Joel W McGlothlinEdmund D Brodie
Apr 25, 2014·Evolution; International Journal of Organic Evolution·Jeremy Van Cleve, Erol Akçay
Nov 27, 2015·Genetics, Selection, Evolution : GSE·Edin HamzićBertrand Bed'Hom
Sep 30, 2015·Genetics, Selection, Evolution : GSE·Tessa BrinkerPiter Bijma
Dec 11, 2014·Behavior Genetics·Vanessa GramsJörn Bennewitz
Sep 15, 2016·Genetics, Selection, Evolution : GSE·Setegn W AlemuPiter Bijma
Nov 24, 2016·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·T BrinkerE D Ellen
Oct 19, 2017·Journal of Evolutionary Biology·D N Fisher, A G McAdam
May 9, 2019·Poultry Science·Esther D Ellen, Piter Bijma
Nov 13, 2019·Evolution; International Journal of Organic Evolution·Francesca SantostefanoDenis Réale
Jan 23, 2020·Proceedings. Biological Sciences·Germain MontazeaudSylvain Gandon
Jan 2, 2021·Animals : an Open Access Journal From MDPI·Federica BasileGabriella Guelfi
Jul 28, 2021·Genome Biology·Amelie BaudOliver Stegle
Oct 15, 2021·Evolution; International Journal of Organic Evolution·Thomas M HouslayTim H Clutton-Brock
Mar 24, 2010·Poultry Science·H-W Cheng

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