indicators of stress and quality meat in broilers slaughtered by the “halal”
indicadores de estresse e qualidade da carne em frangos abatidos pelo método “halal”

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ID: 249124
2012
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Abstract
This research was aimed to evaluate the stress as well as carcass and meat quality of broilers slaughtered by the “Halal” method. 120 carcasses were evaluated, 60 broilers were slaughtered by the traditional method and 60 broilers by the “Halal” method, with live weight of 3.8 kg and 49 days old. Exsanguination blood samples were collected to measure the levels of creatine phosphokinase, lactic acid and hemogram. After the slaughter each carcass had been evaluated to verify the presence of bruises, contusions, muscle bleeding, and fractures. Initial and final pH, color (CIELAB), drip (PAG) and pressing water loss (PAP) and tenderness (shear force – FC) were measured in “Pectoralis major” muscle. The lactic acid levels were higher and lower in monocytes for the broilers slaughtered using the “Halal” method, indicating higher stress levels, while the percentage of hematocrit was great to the traditional slaughter. Animals slaughtered by the “Halal” method had wing bruises with bigger size and meat with lower pH values the initial and final, higher lightness (L*) and higher redness (a*). It was observed higher frequency of PSE carcass (pale, soft, exsudative) slaughtered by method “Halal”. It is concluded that the “Halal” method of slaughter for chickens, stress increases and the size of the lesions of carcasses and higher frequency of PSE carcasses, reducing the quality of chicken meat.

Este trabalho teve como objetivo avaliar o estresse e a qualidade da carcaça e da carne de frangos abatidos pelo método “Halal”. Foram avaliadas 120 carcaças, 60 frangos abatidos pelo método tradicional e 60 frangos abatidos pelo método “Halal”, com peso médio de 3,8 kg de peso vivo e idade de 49 dias. No momento da sangria foi coletado sangue para análise dos níveis de creatina fosfoquinase, lactato e hemograma. Após o abate foi verificado nas carcaças a presença de hematomas, contusões, hemorragias musculares e fraturas. No músculo peitoral (Pectoralis major) foi mensurado o pH inicial e final, a cor (CIELAB), a perda de água por gotejamento (PAG) e por pressão (PAP) e a maciez (Força de cisalhamento – FC). Os níveis de lactato foram mais elevados e de monócitos mais baixos nos frangos abatidos pelo método “Halal”, indicando maior nível de estresse, embora a porcentagem de hematócrito tenha sido maior para o abate tradicional. Animais abatidos pelo método “Halal” apresentaram lesões de maior tamanho nas asas e carnes com menores valores de pH inicial e final, maior luminosidade (L*) e maior índice de vermelho (a*). Foi observado maior frequência de carcaças PSE (cor pálida, textura mole, exsudativa) nos animais abatidos pelo método “Halal”. Conclui-se que o método de abate Halal para frangos, aumenta o estresse assim como o tamanho das lesões das carcaças e maior frequência de carcaças PSE, diminuindo a qualidade da carne de frango.

Reference Key
bridi2012semina:indicators Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ana Maria Bridi;Nilva Aparecida Nicolao Fonseca;Caio Abércio da Silva;Mara Regina Stipp Balarin;Karina Keller Marques da Costa Flaiban;Camila Costantino;Marina Avena Tarsitano;Thales de Almeida Bitencourt Cardoso
Journal frontiers in neuroendocrinology
Year 2012
DOI
DOI not found
URL
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/10978
Keywords
Agriculture (General) insensibilização elétrica

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