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| Impact of Adrenaline or Cortisol Injection on Meat Quality Development of Merino Hoggets |
| Dario G Pighin, Sebastian A Cunzolo, Maria Zimerman, Adriana A Pazos, Ernesto Domingo, Anibal J Pordomingo , Gabriela Grigioni |
1.Institute of Food Technology, National Institute of Agricultural Technology (INTA), De Los Reseros y Las Cabañas, Morón 1708, Argentina
2.Experimental Station - INTA Bariloche, Modesta Victoria 4450, San Carlos de Bariloche Río Negro 8400, Argentina
3.National Council of Scientific and Technological Research - CONICET, Av. Rivadavia 1917, Buenos Aires 1033, Argentina
4.Faculty of Agricultural and Food Sciences, University of Moron, Cabildo 134, Morón 1708, Argentina
5.Experimental Station - INTA Anguil, Ruta Nacional No 5 Km. 580 (6326), La Pampa 6326, Argentina |
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摘要 Increased levels of stress hormones in the muscle could lead to post mortem metabolic/structural modifications that could be reflected on meat quality. The present study investigated the metabolic effect of either adrenaline or cortisol injected into lambs in order to obtain an animal model of acute stress. Results showed that adrenaline or cortisol injection lead to glucose metabolism and muscle temperature increase. Muscle pH immediately post mortem was affected by adrenaline treatment. Water holding capacity (WHC) of fresh muscle, final muscle pH and temperature registered at 24 h post mortem were not affected by injected hormones. Hardness and adhesiveness of LD muscle evaluated 3 d post mortem tended to increase as a result of adrenaline or cortisol injection. Results demonstrated that injected hormones were able to affect the post mortem muscle biochemistry and the pH/T curve independently of final muscle pH.
Abstract Increased levels of stress hormones in the muscle could lead to post mortem metabolic/structural modifications that could be reflected on meat quality. The present study investigated the metabolic effect of either adrenaline or cortisol injected into lambs in order to obtain an animal model of acute stress. Results showed that adrenaline or cortisol injection lead to glucose metabolism and muscle temperature increase. Muscle pH immediately post mortem was affected by adrenaline treatment. Water holding capacity (WHC) of fresh muscle, final muscle pH and temperature registered at 24 h post mortem were not affected by injected hormones. Hardness and adhesiveness of LD muscle evaluated 3 d post mortem tended to increase as a result of adrenaline or cortisol injection. Results demonstrated that injected hormones were able to affect the post mortem muscle biochemistry and the pH/T curve independently of final muscle pH.
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Received: 13 October 2012
Accepted:
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| Fund: Authors express their gratitude to Lic. Ana Sancho (Institute of Food Technology - INTA), for statistical analysis performed and to Mrs. Mónica Pecile (Institute of Food Technology - INTA), for her skillful assistance. |
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Corresponding Authors:
Correspondence Dario G Pighin, Tel: +54-11-46210446, Fax: +54-11-46212012, E-mail: dpighin@cnia.inta.gov.ar
E-mail: dpighin@cnia.inta.gov.ar
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Cite this article:
Dario G Pighin, Sebastian A Cunzolo, Maria Zimerman, Adriana A Pazos, Ernesto Domingo, Anibal J Pordomingo , Gabriela Grigioni.
2013.
Impact of Adrenaline or Cortisol Injection on Meat Quality Development of Merino Hoggets. Journal of Integrative Agriculture, 12(11): 1931-1936.
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