Association between poultry's lesions in the slaughter line and the transect approach on farms
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Data di Pubblicazione:
2012
Citazione:
Association between poultry's lesions in the slaughter line and the transect approach
on farms / T.T. Negrao Watanabe, J. Marchewka, V. Ferrante, I. Estevez. ((Intervento presentato al 1. convegno AWIN conference tenutosi a Oscarsborg nel 2012.
Abstract:
This is a preliminary study with the aim of validating the transect approach for the
assessment of on farm poultry welfare assessment. The objective of the current study is to
develop and validate the method to associate major lesions on poultry carcasses noticed in
the slaughter line and the main features that observed during the transect approach on the
farm. Finding a method for a practical on-farm poultry welfare evaluation could be helpful for
industry to improve their returns, but also will help farmers to better manage the flock by
improving their welfare, and would benefit consumers and animals. The transect
methodology approach was performed in each farm previously. Independent samples of 30-
35 day old birds from three different farms and two rooms within each farm were scored by
two persons at the slaughter line after de-feathering. The slaughterhouse provided live and
carcass weights, condemnation rate, downgrade, and dead on arrival for each flock. At the
slaughter line the evaluation of breast, hock and footpad were performed by tow observers.
Observer one scored breast blisters and irritations, while the observer two was responsible
for hock burns. Both of them graded together foot pad lesions. The first 60 bird samples from
the evaluated flock at the line were not considered, due to the possibility of mixes of birds
from the different flocks or farm. Breasts were evaluated with regard to absence (0) or
presence of blisters and breast irritations on a scale 1 to 2, depending on the severity of the
lesions. Hocks were scored from absence (0) to 4 (severe lesions), according to the Welfare
Quality, 2009 protocol. Afterwards, the right feet of 500 birds were randomly separated from
the totals coming from evaluated flock and were scored according to the Welfare Quality
2009 protocol with regard to the severity of the wounds on the scale from 0 (no lesions
observed) to 4 (the most severe lesions). All these data will be analysed and associated with
other findings that were observed during the novel approach of transects studies.The authors are grateful to GRUPO AN, Tajonar, Navarra, Spain and to the Asociación
Española de Avicultura (AECA-WPSA) for their support and for granting access to facilities. AWIN Project n. 266213 FP7-KBBE-2010-4
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Elenco autori:
T.T. Negrao Watanabe, J. Marchewka, V. Ferrante, I. Estevez
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