The effects of stunning/slaughtering methods (carbon monoxide asphyxia, CO; electroshock, E; asphyxia in the air, A) were studied in rainbow trout kept in freshwater at 12 °C. The fish were analysed for blood parameters, rigor mortis evolution, fillets shape changes over 48 h, and ATP depletion and Adenylate Energy Charge (AEC) in muscle immediately after death. Treatment Awas most stressful giving the lowest pH values during rigor evolution, the highest concentration of lactate (6.31 mM) in plasma and the lowest AEC values in the muscle. None of the three-stunning/slaughtering methods affected perimeter, length and height of the fillets, with exception for the area at 24 h and 48 h post mortem, which was significantly reduced by CO treatment (CO b A b E). Globally, CO and E treatments showed the highest ability in preserving muscle energy immediately after death, whereas treatment E resulted the most suitable method for slaughtering, based on blood and muscle indicators.

Effects of stunning/slaughtering methods in rainbow trout (Oncorhynchus mykiss) from death until rigor mortis resolution / Concollato, Anna; Olsen, Rolf Erik; Vargas, Sheyla Cristina; Bonelli, Antonio; Cullere, Marco; Parisi, Giuliana. - In: AQUACULTURE. - ISSN 0044-8486. - ELETTRONICO. - 464:(2016), pp. 74-79. [10.1016/j.aquaculture.2016.06.009]

Effects of stunning/slaughtering methods in rainbow trout (Oncorhynchus mykiss) from death until rigor mortis resolution

CONCOLLATO, ANNA;BONELLI, ANTONIO;PARISI, GIULIANA
2016

Abstract

The effects of stunning/slaughtering methods (carbon monoxide asphyxia, CO; electroshock, E; asphyxia in the air, A) were studied in rainbow trout kept in freshwater at 12 °C. The fish were analysed for blood parameters, rigor mortis evolution, fillets shape changes over 48 h, and ATP depletion and Adenylate Energy Charge (AEC) in muscle immediately after death. Treatment Awas most stressful giving the lowest pH values during rigor evolution, the highest concentration of lactate (6.31 mM) in plasma and the lowest AEC values in the muscle. None of the three-stunning/slaughtering methods affected perimeter, length and height of the fillets, with exception for the area at 24 h and 48 h post mortem, which was significantly reduced by CO treatment (CO b A b E). Globally, CO and E treatments showed the highest ability in preserving muscle energy immediately after death, whereas treatment E resulted the most suitable method for slaughtering, based on blood and muscle indicators.
464
74
79
Concollato, Anna; Olsen, Rolf Erik; Vargas, Sheyla Cristina; Bonelli, Antonio; Cullere, Marco; Parisi, Giuliana
File in questo prodotto:
File Dimensione Formato  
Fulltext.pdf

Accesso chiuso

Descrizione: Fulltext
Tipologia: Pdf editoriale (Version of record)
Licenza: DRM non definito
Dimensione 751.54 kB
Formato Adobe PDF
751.54 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/1043572
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 13
social impact