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Addition of Protease Enzyme to Dog and Cat Feed and Its Influence on the Digestibility Coefficient, Immune Response, and Metabolic Biomarkers

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Food and Nutrition Sciences 2024年第11期15卷 1043-1054页

作者： Bruno Giorgio de Oliveira Cécere Emanuela Cristina Zatti Anzigliero Angelo Schonorr Thiago Pereira Ribeiro Walter Hugo Cuelho Suarez Daniel Pigatto Monteiro Aleksandro S. Da Silva Multicenter Biochemistry and Molecular Biology Program Santa Catarina State University (UDESC) Lages Brazil Department of Animal Science Santa Catarina State University (UDESC) Chapec Brazil Department of Animal Nutrition TectronTecnologia e Inovao Toledo Paran Brazil

Promoting better protein digestibility through exogenous enzymes in the diet is essential in the nutrition of companion animals, mainly for better performance and maintenance of the animals’ physiological and metabolic systems, promoting health and adequate growth. In addition, it reduces the cost of the diet by possibly reducing protein in the diet, which is the main and most expensive ingredient for dogs and cats. The objective of this study was to verify whether the addition of protease to dog and cat food can improve the protein digestibility of the food, thus facilitating greater absorption of amino acids and influencing metabolic biomarkers and immune response. To this end, two experiments were carried out to evaluate the protease from the fermentation of Aspergillus niger and Bacillus subtilis. Experiment 1 was carried out with ten male, non-castrated beagles divided into two groups of five animals: the control group (without enzyme) and the test group (with 250 g of protease/ton). The animals underwent two 45-day experimental periods, and in the second period, after a 15-day interval, the dogs in the control group became part of the treatment group (crossover model). Adding this enzyme to the dogs’ diet had no adverse effects on the animals’ health besides improving the digestibility of dry matter and crude protein consumed by the dogs. Experiment 2 was carried out with sixteen female cats of no defined breed, non-castrated, divided into four groups with four animals per group, namely: Treatment A (without enzyme), Treatment B (with protease at a dose of 100 g/ton), Treatment C (with protease at a dose of 200 g/ton) and Treatment D (with protease at a dose of 400 g/ton). The cats underwent two 30-day experimental periods, and in the second period, after a 15-day interval, the animals switched between treatments (crossover model) to increase the power of the statistical test. The enzyme consumption did not affect the felines’ metabolism and health but improve

关键词： Canines Diet enzymes exogenous Felines Metabolism

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