Effects of Aggression and Social Hierarchy on Egg Production and Some Behaviour Traits in Laying Hens

Content Provider	Semantic Scholar
Author	Iş, Davran Etkisi, Özelliklerine Sava, Turker
Copyright Year	2010
Abstract	Recently, some investigations on increasing of the cannibalism with the aggressive behaviours in laying flocks have been reported by the researchers who are interested in avian genetics. Therefore, in this study, effects of aggression and social hierarchy on the egg production and behavioural activities (food intake, preening, sitting, standing, cage pecking, dustbatching and fearing) were investigated. Moreover, differences between genotypes used were also discussed in terms of those traits. Ten white layers (Lohmann LSL) and ten brown iayers (H & N Brown Nick) ware used. In the beginning of the study, ten dominant and ten recessive birds from each genotype were classified with respect to social hierarchy and in order to establishing of the social order, one dominant and one recessive bird selected from different genotypes were placed in the same cage. Effects of social hierarchy on all parameters were not significant (p>0.05). Egg production of the white layers (15.7±2.81) was lower than the brown layers (25.6±2.81) and differences between the groups were found to be significant (p<0.05). White layers were found to be more aggressive (p<0.05) and fear (p<0.001) than the brown layers. Results also showed that feeding behaviour of recessive bird was significantly affected by the aggressive pecking of dominant birci (R2=0.43; p<0.05).
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://dergiler.ankara.edu.tr/dergiler/15/1325/15286.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article