Animal Welfare Hub

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aquaculture

Freshwater Prawn Welfare in Aquaculture

Freshwater prawns (Macrobrachium spp.) are increasingly farmed globally. This guide examines welfare considerations in their production.

Key Facts

Macrobrachium rosenbergii (giant freshwater prawn) is the primary farmed species
They are highly territorial and aggressive, particularly mature males
Aggressive behaviour causes significant injury and mortality welfare concerns
Monoculture and mixed-sex stocking create management welfare challenges
Water quality management is critical for crustacean welfare
As decapod crustaceans, welfare considerations apply following UK sentience recognition

Welfare Considerations and Management

Freshwater prawn welfare management requires addressing the inherently aggressive nature of Macrobrachium species. Size grading reduces differential-size aggression. Appropriate shelter provision reduces territorial interactions. Monoculture of males or use of all-female populations avoids reproductive aggression. Water quality management maintains welfare through adequate oxygen, appropriate pH, and temperature. Precautionary welfare principles support humane handling and slaughter practices.

What You Can Do

Implement size grading to reduce aggression from size differentials
Provide shelter structures to reduce territorial aggressive encounters
Maintain excellent water quality parameters for freshwater prawn welfare
Apply precautionary welfare practices to handling and slaughter given decapod sentience recognition