Efecto de los grados día de ayuno y del hacinamiento previos al sacrificio sobre el contenido estomacal y respuesta de estrés en trucha arcoíris (Oncorhynchus Mykiss)
- R. Bermejo Poza 1
- J. de la Fuente 2
- C. Pérez 2
- S. Lauzurica 2
- E. Gonzalez de Chavarri 2
- M.T. Diaz 2
- F. Torrent 2
- M. Villaroel 2
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1
Universidad Complutense de Madrid
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2
Universidad Politécnica de Madrid
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- Javier Álvarez Rodríguez
- Begoña Panea Doblado
- Jorge Hugo Calvo Lacosta
- Mireia Blanco Alibés
- José Alfonso Abecia Martínez
- Daniel Villalba Mata
- María Ángeles Latorre Górriz
Editorial: Asociación Interprofesional para el Desarrollo Agrario
ISBN: 978-84-606-7969-1
Año de publicación: 2015
Volumen: 2
Páginas: 588-590
Congreso: Jornadas sobre producción animal (16. 2015. Zaragoza)
Tipo: Aportación congreso
Resumen
In aquaculture, pre-slaughter handling includes fasting to ensure emptying of the digestive system and crowding and capturing fish from tanks or cages before slaughter. To analyse the effect of both of these potential stressors, 144 rainbow trout, Oncorhynchus mykiss (Walbaum) were fasted for 7 days (158.2 °C days) and crowded in their raceways for 20 min, and later compared to controls (neither fasted nor crowded). The stomach content, coefficient of condition, liver somatic index, plasma cortisol, lactate and triglycerides were lower in fasted trout. Conversely, crowding stress increased plasma cortisol, lactate and glucose, suggesting a decrease in their welfare level. Fasting up to 150 °C days did not seem to have a negative effect on stress but crowding was stressful and its effect on stress but crowding was stressful and its effects were independent of fasting status.