Physicochemical and biochemical parameters of chicken breast meat influenced by stunning methods

被引：14

作者：

da Silva-Buzanello, Rosana Aparecida ^{[1
,2
]}

Schuch, Alexia Francielli ^{[2
]}

Nunes Nogues, Diego Ricardo ^{[3
]}

de Melo, Priscila Falcao ^{[3
]}

Gasparin, Andre Wilhan ^{[4
]}

Torquato, Alex Sanches ^{[5
]}

Canan, Cristiane ^{[2
]}

Soares, Adriana Lourenco ^{[1
]}

机构：

[1] Univ Estadual Londrina, Dept Ciencia & Tecnol Alimentos, Ctr Ciencias Agr, Rodovia Celso Garcia Cid,Km 6, BR-86057970 Londrina, PR, Brazil

[2] Univ Tecnol Fed Parana, Programa Posgrad Tecnol Alimentos, Ave Brasil 4232,Parque Independencia, BR-85884000 Medianeira, PR, Brazil

[3] Univ Tecnol Fed Parana, Dept Acad Alimentos, Ave Brasil 4232,Parque Independencia, BR-85884000 Medianeira, PR, Brazil

[4] Cooperat Agroind Lar, Slaughter Supervis, BR 277, BR-85887000 Metalandia, PR, Brazil

[5] Univ Tecnol Fed Parana, Dept Acad Quim, Ave Brasil 4232,Parque Independencia, BR-85884000 Medianeira, PR, Brazil

来源：

POULTRY SCIENCE | 2018年 / 97卷 / 11期

关键词：

gas stunning; electronarcosis; fatty acid profile; sarcoplasmic Ca2+; myofibril fragmentation index; POSTMORTEM ELECTRICAL-STIMULATION; PSE PALE; PHOSPHOLIPASE-A2; ACTIVITY; RAPID METHOD; POULTRY PSE; SOFT; QUALITY; COLOR; SLAUGHTER; CARCASS;

D O I：

10.3382/ps/pey281

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

The influence of stunning methods on the physicochemical and biochemical parameters of chicken breast meat, as indicators of bird stress, was investigated. A total of 200 Cobb broiler chickens aged from 42 to 48 d were submitted to gas or electrical stunning and slaughtered according to the standard industry practice. Pectoralis major muscles (24 h postmortem) from broilers stunned by electronarcosis exhibited a higher L and R-value and lower pH(45min) than did those from gas stunning, indicating modification of the glycolytic rate. Protease activity, measured as the myofibril fragmentation index, and the sarcoplasmic Ca2+ concentration were highest in samples from broilers stunned by electronarcosis, suggesting the greatest activity of the calpain system. In the fatty acid profile, a higher ratio of polyunsaturated fatty acids was observed in samples from broilers stunned by electronarcosis. These characteristics are related to phospholipase A(2) activity, which is higher in animal stress conditions. These results indicated that the gas-stunning method produced less bird stress than electrical stunning.

引用

页码：3786 / 3792

页数：7

共 38 条

[1] Post-slaughter changes in ATP metabolites, reducing and phosphorylated sugars in chicken meat [J].