Some insect-based pet foods may not meet nutritional guidelines and may contain species not listed on the label. Researchers at Ghent University in Belgium evaluated the nutritional adequacy of insect-based dog and cat foods and found potential gaps in quality control and labeling accuracy.
The researchers analyzed 29 insect-based pet food products available in European pet food retail outlets. All the products were marketed as complete and balanced and included 24 for dogs and five for cats. These included foods designated for different life stages: four for growth, 17 for adult maintenance, and three for all life stages for dogs; two for adult cats and three for all life stages. Researchers assessed composition, essential amino acid profiles and minerals, such as calcium, phosphorus, potassium, magnesium, copper, iron, zinc, selenium, mercury and molybdenum.
Results showed that 76 percent of the products tested did not comply with their declared nutritional values, with some falling outside acceptable tolerances. When evaluated against nutritional recommendations, only three products (10 percent) met the standards set by the European Pet Food Industry Federation (FEDIAF), while 17 (59 percent) met guidelines from the National Research Council. Just one product fulfilled both its label declarations and FEDIAF recommendations. Nine products (31 percent) had discrepancies in two or more nutrient categories. Common issues included misreported crude fiber levels and metabolizable energy content. Deficiencies were found in selenium, calcium, phosphorus, and taurine, as well as improper calcium-to-phosphorus ratios, all of which could compromise pet health.
Undeclared species in insect-based pet foods
Pets with allergies to mammal or bird meats may be able to tolerate insect proteins, creating a market for insect-based pet foods as hypoallergenic. To evaluate this, the researchers used genetic sequencing on 20 insect-based products labeled as hypoallergenic to detect the presence of mammal or avian DNA. While 75 percent complied with their stated ingredient claims, five contained DNA from undeclared animals, which could present risks for pets with food sensitivities or allergies.
“Despite the potential benefits of insect-based pet foods, this study underscores the need for further research and stricter quality control to ensure safety and efficacy, ultimately improving pet nutrition and consumers’ trust,” the researchers wrote in the Journal of Insects and Food and Feed.
