Stunning of pigs with different gas mixtures: Behavioural and physiological reactions - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Meat Science Année : 2021

Stunning of pigs with different gas mixtures: Behavioural and physiological reactions

Résumé

The present study used thirty-one pigs to investigate induction of unconsciousness and behavioural reactions in different gas mixtures: 80% CO2/air, 90 s; 40% CO2/30% O2/air, 180 s; 70% N2O/30% CO2, 90 s. All pigs lost consciousness. All presented respiratory difficulties and most pigs involuntary muscle contractions, often before loss of standing posture. Between mixtures, average latencies of certain behaviours and delays between behaviours differed. Following immersion, blood pH was lower than normal. The low pH induced by the CO2/O2/air mixture was physiologically associated with hyperoxemia. Relationships between blood gases, different behavioural and heart rate responses are discussed. In conclusion, all mixtures caused discomfort due to respiratory difficulties and the addition of O2 or N2O to the CO2 mixture did not present an advantage.

Domaines

Biologie animale
Fichier non déposé

Dates et versions

hal-03124802 , version 1 (29-01-2021)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Claudia Terlouw, Véronique Deiss, Thierry Astruc. Stunning of pigs with different gas mixtures: Behavioural and physiological reactions. Meat Science, 2021, 175, pp.108452. ⟨10.1016/j.meatsci.2021.108452⟩. ⟨hal-03124802⟩

Collections

INRAE UMRH PHASE
31 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More