In recent years, the pet population in European households has increased. This increase has led to an increase in the dog and cat food industry, increasing the demand and causing owners to search for healthier and more natural diets. This study investigated the potential use of algae in treats for dogs and cats, looking for nutritional contributions and as a supplement to their diets. Three species of algae were used: Ulva rigida, Palmaria palmata and Fucus vesiculosus, which were selected for their antioxidant, anti-inflammatory and nutritional properties. The results of the analysis of these algae reveal that they can improve the nutritional value of pet snacks, offering potential health benefits for pets, such as increased antioxidant activity and enzyme inhibition. A snack acceptance test was carried out at the “Centro de Recolha Oficial de Animais de Faro” (CROAF) to observe the behaviour and acceptance of dogs and cats to the algae biscuits. This test indicated a positive reception among pets, suggesting that algae snacks could be a viable implementation to pets' diets. This study has contributed to increased research into alternative, more sustainable, natural and beneficial pet food ingredients.
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