Resumo:
The use of hydrolyzed meals in feed is increasing due to their potential functionalities resulting from the presence of bioactive peptides, highlighting their antioxidant function. This study aimed to evaluate the inclusion of 10% of hydrolyzed poultry viscera meal (HVM) in an extruded dry diet for adult dogs on the serum and seminal antioxidant capacity of the animals.
Sixteen adult male dogs of reproductive age of 4.19 ± 0.71 years were used, divided into two treatments: 1) extruded dry diet for adult dogs containing 32% viscera meal (VFM) and 2) diet 1 with the inclusion of 10% (HVM) replacing the control diet. To evaluate the effect of diets on serum antioxidant capacity, blood samples were collected on days 0, 60 and 120 of consumption of the experimental diets to determine malondialdehyde (MDA), total antioxidant capacity (TAC) and 2,2-diphenyl-1-picrylhydrazyl (DPPH). For seminal analysis, semen from dogs was collected after 60 and 120 days of consumption of the diets to determine MDA, TAC and superoxide dismutase (SOD). Data were evaluated by two-way ANOVA, using SigmaPlot v.12.0 at 5% probability. In the MDA analysis, a significant reduction in lipid peroxidation was observed in the serum of dogs that received a diet with inclusion of FVH (p=0.005). For semen, no significant effect of diet was observed, but a tendency towards greater TAC in the group that consumed the diet containing FVH (p=0.058). The results demonstrate that the organic antioxidant capacity of the animals improved, evidenced by the reduction of oxidative stress markers in the dogs' bodies during the study period. The consumption of a diet containing FVH promoted an improvement in the serum antioxidant status of dogs, which extended to an improvement in seminal antioxidant capacity, indicating potential to support the health and reproduction of these animals.
