Abstract

Fasting, i.e. depriving the animals of food prior to harvesting, has been practised in the production of house crickets (Acheta domesticus). However, the effectiveness of this method in reducing microbial loads is still unclear. In addition, there may be costs of fasting to the organism, which could compromise product quality and animal welfare. Here, we analysed spontaneous behaviour displayed after 0, 24 or 48 hours of fasting. We show that after 48 hours of fasting, shelter use was increased and the duration spent on the exposed area of the floor was decreased. The same trend was seen after 24 hours fasting. Moreover, in both fasting treatments, a strong reduction in grooming was seen. We conclude that, in the absence of a microbial lowering effect of fasting and considering the current finding that fasting induces behavioural responses in crickets, there is currently no scientific support for using fasting in cricket production.

Keywords

insect production; starvation; behaviour

Published in

Journal of insects as food and feed
2022, Volume: 8, number: 1, pages: 5-8
Publisher: WAGENINGEN ACADEMIC PUBLISHERS

SLU Authors

• Vossen, Laura

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

• Roman, Erika

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

• Jansson, Anna

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Animal and Dairy Science


Publication identifier

DOI: https://doi.org/10.3920/JIFF2021.0053

Permanent link to this page (URI)

https://res.slu.se/id/publ/115196