Reducing stress during welfare inspection - Validation of a non-intrusive version of the laywel plumage scoring system for laying hensReportar como inadecuado




Reducing stress during welfare inspection - Validation of a non-intrusive version of the laywel plumage scoring system for laying hens - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

* Corresponding author 1 ITT - Institute of Animal Welfare and Animal Husbandry 2 Fachbereich Genetik und Biometrie 3 Biochemistry, Department of Biomedical Sciences 4 Animal Nutrition and Management

Abstract : 1. The objectives of the present study were to validate a reduced, non-intrusive version RLS of the LayWel plumage scoring system in domestic laying hens with reference to the complete, intrusive scoring CLS and to investigate the effect of these two scoring methods on corticosterone metabolite concentrations. 2. A total of 312 medium heavy laying hens from 4 commercial hybrids kept in 24 floor pens were scored by two experienced teams. Another 150 hens from 2 hybrids kept in 6 pens were used for estimating scoring treatment effects on corticosterone metabolites in droppings. 3. Plumage scores were in general higher using the RLS method compared to the CLS method. The agreement between teams for plumage scores CLS were on a high total score to an excellent single body part except breast and cloaca level. 4. Birds subjected to CLS tended to have a higher level of corticosterone metabolites in droppings two hours after scoring compared to birds in the control treatment not scored. Birds subjected to RLS had an intermediate level. 5. It was concluded that a reduced version of the LayWel scoring system is a valid and reliable scoring method tending to induce less stress to the subjects than the original procedure.

Mots-clés : Life Sciences





Autor: Joergen Kjaer - Henrike Glawatz - Britta Scholz - Sophie Rettenbacher - Ragnar Tauson -

Fuente: https://hal.archives-ouvertes.fr/



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