Rearing, bird type and pre-slaughter transport conditions I. Effect on dead on arrival

Villarroel Robinson, Morris Ricardo and Pomares, Fernando and Ibáñez Ruiz, Miguel Ángel and Lage, Almudena and Martínez Guijarro, Paula and Méndez, Jesús and Blas Beorlegui, Juan Carlos de (2018). Rearing, bird type and pre-slaughter transport conditions I. Effect on dead on arrival. "Spanish Journal of Agricultural Research", v. 16 (n. 2); pp. 1-7. ISSN 2171-9292. https://doi.org/10.5424/sjar/2018162-12013.

Description

Title: Rearing, bird type and pre-slaughter transport conditions I. Effect on dead on arrival
Author/s:
  • Villarroel Robinson, Morris Ricardo
  • Pomares, Fernando
  • Ibáñez Ruiz, Miguel Ángel
  • Lage, Almudena
  • Martínez Guijarro, Paula
  • Méndez, Jesús
  • Blas Beorlegui, Juan Carlos de
Item Type: Article
Título de Revista/Publicación: Spanish Journal of Agricultural Research
Date: 2018
ISSN: 2171-9292
Volume: 16
Subjects:
Freetext Keywords: poultry; slaughterhouse; mortality; welfare
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The transport of broilers to slaughter normally results in a small percentage of dead on arrival (DoA) but little is known about the effects of flock thinning or bird weight. A multivariable linear model was used to analyse the incidence of DoA over one year in 1,856 flocks of Ross broilers (9,188 shipments). Each flock was categorized according to broiler type (yellow-skinned females and males, white-skinned females and males and roaster females) and thinning (birds transported after thinning, remaining birds after thinning and non-thinned flocks), in addition to transport distance, waiting time, maximum and minimum daily temperatures, precipitation and maximum wind speed. The overall percentage of DoA was 0.187%. The effect of the daily maximum outside temperature on DoA was quadratic with minimum DoA at 21.5ºC. Arrival time to the slaughterhouse and waiting time increased DoA by 0.0044% and 0.0021% for every 60 min increase, respectively. DoA were higher in males (which were heavier than females), and in the flocks that were previously thinned. An interaction between thinning and bird type was found, so that DoA were higher in previously thinned flocks of male broilers and roaster females. Despite the high incidence of thinning and larger bird weight, the percentage of DoA was comparable to previous studies. This research provides one of the largest detailed analyses of DoA in commercial broiler production in the Iberian Peninsula. The models described allow to quantify how increases in temperature, transport distance, waiting time, bird weight and the practise of thinning can all increase broiler mortality.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentS2013/ABI-2913MEDGANUnspecifiedTecnologías de manejo, nutrición y genética para optimizar la producción de alimentos de origen animal característicos de la dieta mediterránea

More information

Item ID: 54581
DC Identifier: http://oa.upm.es/54581/
OAI Identifier: oai:oa.upm.es:54581
DOI: 10.5424/sjar/2018162-12013
Official URL: http://revistas.inia.es/index.php/sjar/article/view/12013/4016
Deposited by: Memoria Investigacion
Deposited on: 09 Apr 2019 09:11
Last Modified: 09 Apr 2019 09:28
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