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Impact of Adrenaline or Cortisol Injection on Meat Quality Development of Merino Hoggets

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...

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Main Authors: Pighin, Darío Gabriel, Cunzolo, Sebastián Abel, Zimerman, Maria, Pazos, Adriana Alejandra, Domingo Mendizabal, Ernesto, Pordomingo, Anibal, Grigioni, Gabriela Maria
Format: info:ar-repo/semantics/artículo
Language:Inglés
Published: 2018
Subjects:
Carne
Calidad de la Carne
Epinefrina
Hidrocortisona
Cordero
Meat
Meat Quality
Epinephrine
Hydrocortisone
Lambs
Adrenalina
Cortisol
Raza Merino
Online Access:https://www.sciencedirect.com/science/article/pii/S2095311913606309
http://hdl.handle.net/20.500.12123/2402
https://doi.org/10.1016/S2095-3119(13)60630-9
Summary: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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