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Farmed Cricket (Acheta domesticus, Gryllus assimilis, and Gryllodes sigillatus; Orthoptera) Welfare Considerations: Recommendations for Improving Global Practice
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Researchers reviewed welfare considerations for the three most commercially farmed cricket species, highlighting that over 370 billion individuals are slaughtered annually with minimal welfare standards, and providing science-based recommendations to improve housing, handling, and slaughter practices in the global insect food industry.
Orthoptera (crickets and grasshoppers) is currently the most reared group of hemimetabolous insects in the insects as food and feed industry, with over 370 billion individuals slaughtered and/or sold live annually. The most-farmed cricket species is Acheta domesticus, however there is growing interest in farming at least two additional species, Gryllus assimilis and Gryllodes sigillatus. Crickets are largely being explored for use as human protein, and exotic animal or pet feed - as well as, to a lesser extent, livestock and fish feed. Insect welfare is of great interest to consumers who are considering incorporating insect protein into their diets, as well as to many producers. However, no studies have considered the welfare concerns of farmed crickets under current industry conditions. Using an established model for assessing farmed insect welfare, we assess potential welfare concerns for the three most-farmed cricket species, including: interspecific interactions (including parasites and pathogens), abiotic conditions, nutrition and hydration, environmental pollutants, injury and crowding, density, handling-associated stress, genetics and selection, enrichments, transport-related challenges, and stunning, anesthesia, and slaughter methods. From our assessment of these factors, we make recommendations for improving cricket welfare now and as the industry continues to grow; in addition, we identify research directions that will improve our understanding of cricket welfare. We conclude by broadly discussing the importance of addressing the welfare challenges presented by the insects as food and feed industry.
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