Soares Nayara Mota Miranda, Bastos Taís Silvino, Kaelle Gislaine Cristina Bill, de Souza Renata Bacila Morais Dos Santos, de Oliveira Simone Gisele, Félix Ananda Portella
Department of Animal Science, Federal University of Paraná, R. dos Funcionários, 1540, Curitiba 80035-050, Brazil.
Animals (Basel). 2023 Aug 5;13(15):2527. doi: 10.3390/ani13152527.
Feed additives, such as prebiotics and essential oils, are used in pet foods and can affect digestibility, palatability, and intestinal functionality of dogs. The combined effects of yeast cell wall and oregano essential oil on apparent total tract digestibility (ATTD) and palatability of diet, intestinal fermentation products, and fecal microbiota in dogs were analyzed. Eighteen adult dogs were fed for 20 days with three dry extruded diets for adult dogs: control (without the additive), a diet containing 1.5 kg/ton of yeast cell wall and oregano essential oil (1.5YCO), and a diet containing 3.0 kg/ton of yeast cell wall and oregano essential oil (3.0YCO). The inclusion of both levels of YCO reduced the intake ratio. The addition of 3.0YCO reduced the ATTD of dry matter, compared to the control group ( < 0.05). There were greater putrescine and cadaverine concentrations and lower histamine and ammonia ( < 0.05) in the feces of dogs fed 3.0YCO. In addition, fecal odor of dogs fed YCO was less fetid than the control group ( < 0.05). There was greater fecal bacterial diversity in dogs fed with both dietary concentrations of YCO evaluated ( < 0.05). Dogs fed 1.5YCO and 3.0YCO showed higher relative abundance of and and lower abundance of ( < 0.05) in the feces, in comparison to the control group. Given the modulation of microorganisms considered beneficial and the lower fecal concentrations of histamine, phenols, and ammonia, the YCO blend resulted in indicators of improvement of intestinal functionality in dogs.
益生元、精油等饲料添加剂被用于宠物食品中，并且会影响犬类的消化率、适口性和肠道功能。分析了酵母细胞壁和牛至精油对犬类日粮的表观全肠道消化率（ATTD）、适口性、肠道发酵产物及粪便微生物群的综合影响。18只成年犬被喂食三种成年犬干制膨化日粮20天：对照组（无添加剂）、含有1.5千克/吨酵母细胞壁和牛至精油的日粮（1.5YCO）以及含有3.0千克/吨酵母细胞壁和牛至精油的日粮（3.0YCO）。两种水平的YCO添加均降低了采食率。与对照组相比，添加3.0YCO降低了干物质的ATTD（P<0.05）。采食3.0YCO的犬类粪便中腐胺和尸胺浓度更高，组胺和氨含量更低（P<0.05）。此外，采食YCO的犬类粪便气味比对照组更不恶臭（P<0.05）。在所评估的两种日粮浓度的YCO喂养的犬类中，粪便细菌多样性更高（P<0.05）。与对照组相比，采食1.5YCO和3.0YCO的犬类粪便中[具体菌属]的相对丰度更高，[具体菌属]的丰度更低（P<0.05）。鉴于对有益微生物的调节作用以及粪便中组胺、酚类和氨的浓度较低，YCO混合物可作为犬类肠道功能改善的指标。
