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Abstract

This work presents the results of studies on the effects of genetics on the egg production, survival and social behaviour of hens. It was shown that indirect genetic effects accounted for half of the total genetic variance in purebred hens and the majority of the total genetic variance in crossbred ...

Author(s)
Peeters, K.
Publisher
Wageningen University, Wageningen, Netherlands
Citation
Genetics of social interactions in laying hens: improving survival and productivity, 2015, pp 167 pp.
Abstract

Social interactions among individuals are common both in plants and animals. With social interactions, the trait value of an individual may be influenced by the genes of its interacting partners, a phenomenon known as indirect genetic effects (IGE). An IGE is heritable effect of an individual on...

Author(s)
Alemu, S. W.
Publisher
Wageningen University, Wageningen, Netherlands
Citation
Indirect genetic effects in group-housed animals, 2015, pp 228 pp.
Abstract

To gain further insight in risk factors related to feather pecking, this thesis investigated the effects of genetic background and social environment on feather pecking and related behavioural characteristics in laying hens. In several experiments, behaviour, performance and physiology of...

Author(s)
Uitdchaag, K.
Publisher
Wageningen Universiteit (Wageningen University), Wageningen, Netherlands
Citation
Effects of genetic background and social environment on feather pecking and related behavioural characteristics in laying hens, 2008, pp 154 pp.
Abstract

Author(s)
Allen, J.
Citation
Index to Theses, 1980, 28, 1, pp 120
Abstract

The individual and group behaviour of 360 hens in a free-range system was compared with that of flocks in three types of aviary building, each designed for 985, 1816 and 1750 birds. The birds used 55-65% of the available area of the aviaries, compared with 48% of the free-range area. "Sleeping...

Author(s)
Bölter, U.
Publisher
Fachbereich Veterinärmedizin, Justus-Liebig Universität, Giessen, German Federal Republic
Citation
Felduntersuchungen zum Sozialverhalten von Hühnern in der Auslauf- und Volierenhaltung., 1987, pp 131pp.
Abstract

Author(s)
Hermier, D. D.
Publisher
These, Ecole Nationale Veterinaire d'Alfort.,
Citation
Le comportement social des volailles: importance en elevage intensif., 1981, pp 55pp.
Abstract

Author(s)
RICE, C. E.
Citation
Dissertation Abstracts, 1962, 23, pp 1800