Aquaculture

Farmed Shrimp Stocking Density Welfare

Shrimp farming stocking densities significantly affect water quality, disease risk, and individual shrimp welfare, with intensive systems presenting the greatest welfare challenges.

Key Facts

Intensive shrimp ponds can stock 150 animals per square metre or more
High density increases ammonia reduces dissolved oxygen and elevates disease risk
White spot syndrome virus outbreaks at high densities can kill entire cohorts
Lower-density extensive systems have better welfare indicators but lower productivity
Biofloc technology maintains water quality at higher densities through bacterial communities

Welfare Considerations

High stocking densities in intensive shrimp farming create chronic welfare compromise through poor water quality and elevated disease risk. The scale of suffering in disease outbreaks - billions of animals dying from viral infections - creates welfare concerns proportional to scale even under uncertainty about individual sentience. Better water quality management reduces both disease burden and the likelihood of suffering.

What You Can Do

Choose shrimp from certified sustainable sources with documented stocking density limits
Support research into optimal stocking densities for shrimp welfare
Advocate for water quality standards to be included in shrimp welfare certification
Engage with retailers about their shrimp supply chain sustainability and welfare
Support development of disease-resistant shrimp strains that reduce outbreak severity