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Feather-pecking and injurious pecking in organic laying hens in 107 flocks from eight European countries

Published online by Cambridge University Press:  01 January 2023

M Bestman ,
C Verwer ,
C Brenninkmeyer ,
A Willett ,
LK Hinrichsen ,
F Smajlhodzic ,
JLT Heerkens ,
S Gunnarsson  and
V Ferrante
M Bestman*
Affiliation:
Louis Bolk Institute, Hoofdstraat 24, 3972 LA Driebergen, The Netherlands
C Verwer
Affiliation:
Louis Bolk Institute, Hoofdstraat 24, 3972 LA Driebergen, The Netherlands
C Brenninkmeyer
Affiliation:
Farm Animal Behaviour and Husbandry Section, University of Kassel, Nordbahnhofstraße 1a, 37213 Witzenhausen, Germany
A Willett
Affiliation:
ADAS UK Ltd, Battlegate Road, Boxworth, Cambridgeshire CB23 4NN, UK
LK Hinrichsen
Affiliation:
Department of Animal Science, Faculty of Science and Technology, Aarhus University, Blichers Allé 20, PO Box 50, DK-8830 Tjele, Denmark
F Smajlhodzic
Affiliation:
Institute of Animal Husbandry and Animal Welfare, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Vienna, Austria
JLT Heerkens
Affiliation:
Animal Sciences Unit, Institute for Agricultural and Fisheries Research (ILVO), Scheldeweg 68, B-9090 Melle, Belgium
S Gunnarsson
Affiliation:
Department of Animal Environment and Health, Swedish University of Agricultural Sciences (SLU), PO Box 234, S-532 23 Skara, Sweden
V Ferrante
Affiliation:
Università degli Studi di Milano, Department of Environmental Science and Policy, Via Celoria, 10 20133 Milan, Italy
*
* Contact for correspondence and requests for reprints: [email protected]
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Abstract

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Feather-pecking and cannibalism may reduce the potential of organic husbandry to enhance the welfare of laying hens. We report risk factors for these issues based on a large survey of 107 commercial flocks in eight European countries. Information was collected regarding housing, management and flock characteristics (age, genotype). Near the end of lay, 50 hens per flock were assessed for plumage condition and wounds. Potential influencing factors were screened and submitted to a multivariate model. The majority of the flocks (81%) consisted of brown genotypes and were found in six countries. Since white genotypes (19%) were found only in the two Scandinavian countries, a country effect could not be excluded. Therefore, separate models were made for brown and white genotypes. Feather damage in brown hens could be explained by a model containing a lower dietary protein content and no daily access to the free range (30% of the variation explained). For feather damage in white hens, no model could be made. Wounds in brown hens were associated with not having daily access to free range (14% of the variation explained). Wounds in white hens were explained by a model containing not topping-up litter during the laying period (26% of the variation explained). These results suggest that better feeding management, daily access to the free-range area and improved litter management may reduce incidence of plumage damage and associated injurious pecking, hence enhancing the welfare of organic laying hens. Since this was an epidemiological study, further experimental studies are needed to investigate the causal relationships.

Keywords

animal welfareclinical scoringfree rangelayersmanagementpoultry
Type
Articles
Information
Animal Welfare , Volume 26 , Issue 3 , August 2017 , pp. 355 - 363
Copyright
© 2017 Universities Federation for Animal Welfare

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