RT Journal Article
T1 The effect of intermittent feeding on the pre-slaughter fasting response in rainbow trout
A1 Bermejo Poza, Rubén
A1 Fuente Vázquez, Jesús De La
A1 Pérez Marcos, Concepción
A1 Lauzurica Gómez, María Ascensión Sara
A1 González De Chávarri Echániz, Elisabeth
A1 Díaz Díaz Chirón, María Teresa
A1 Villarroel, Morris
AB Pre-slaughter fasting, usually measured in days, helps to empty the digestive system but less is known about its effect on fish welfare or flesh quality. We evaluated the combined effects of fasting (measured in degree-days, °C d), preceded by intermittent feeding in the last month of production, on the flesh quality rainbow trout (Oncorhynchus mykiss). Trout (n = 240) were fed the same total amount of food either daily (D), once every two days (2D) or once every four days (4D) for one month, and then fasted for 24.3 °C d (2 days) or 102 °C d (9 days). There was a significant interaction between the effects of intermittent feeding and pre-slaughter fasting for most of the parameters measured. Slaughter weight was higher in 2D and 4D trout after two days of fasting, probably since they had more feed in their stomachs. Muscle glycogen and the hepato-somatic index were also higher in 2D trout after 2 days of fasting, suggesting higher energy reserves. There was no interaction between the effects of intermittent feeding and fasting on final muscle pH which was higher after 9 days of fasting, indicating poorer flesh quality. Overall, the results suggest that trout that received a skip-a-day feeding schedule one month before slaughter, adapt better to a two day fast than trout fed daily or once every four days.
PB Elsevier
SN 0044-8486
YR 2015
FD 2015
LK https://hdl.handle.net/20.500.14352/116370
UL https://hdl.handle.net/20.500.14352/116370
LA eng
NO Bermejo-Poza, R., De la Fuente, J., Pérez, C., Lauzurica, S., González, E., Diaz, M. T., & Villarroel, M. (2015). The effect of intermittent feeding on the pre-slaughter fasting response in rainbow trout. Aquaculture, 443, 24-30.
NO Ministerio de Economía, Comercio y Empresa (España)
DS Docta Complutense
RD 12 abr 2025