The effect of intermittent feeding on the pre-slaughter fasting response in rainbow trout

Bermejo Poza, R. and Fuente, J. de la and Pérez, C. and Lauzurica Santiago, Sara and Gonzalez, Elena and Díaz Riquelme, M.T. and Villarroel Robinson, Morris (2015). The effect of intermittent feeding on the pre-slaughter fasting response in rainbow trout. "Aquaculture" (n. 443); pp. 24-30. ISSN 0044-8486. https://doi.org/10.1016/j.aquaculture.2015.03.007.

Description

Title: The effect of intermittent feeding on the pre-slaughter fasting response in rainbow trout
Author/s:
  • Bermejo Poza, R.
  • Fuente, J. de la
  • Pérez, C.
  • Lauzurica Santiago, Sara
  • Gonzalez, Elena
  • Díaz Riquelme, M.T.
  • Villarroel Robinson, Morris
Item Type: Article
Título de Revista/Publicación: Aquaculture
Date: June 2015
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (8MB) | Preview

Abstract

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.

More information

Item ID: 40962
DC Identifier: http://oa.upm.es/40962/
OAI Identifier: oai:oa.upm.es:40962
DOI: 10.1016/j.aquaculture.2015.03.007
Official URL: http://www.sciencedirect.com/science/article/pii/S0044848615001465
Deposited by: Memoria Investigacion
Deposited on: 07 Jul 2016 15:31
Last Modified: 01 Jun 2017 22:30
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM