REQUIMTE, LAQV, ICBAS, School of Medicine and Biomedical Sciences, University of Porto, 4050-313 Porto, Portugal.
SORGAL, Sociedade de Óleos e Rações S.A., 3880-728 S. João Ovar, Portugal.
J Anim Sci. 2024 Jan 3;102. doi: 10.1093/jas/skae280.
To be more sustainable, the pet food industry could increase the inclusion of animal byproducts from the human food chain and fish hydrolysates have been reported to benefit dogs' health. However, there is limited research on the impact of alternative marine hydrolysates in dog food. The current study evaluated the effects of including shrimp hydrolysate as a replacement for wheat gluten (experimental diet) in an extruded complete diet (control diet) on diet palatability, intake, digestibility, fecal characteristics and metabolites, oral volatile sulfur compounds (VSC), and coat quality in dogs. The palatability of diets was assessed in a 2-bowl test, conducted with 12 healthy adult Beagle dogs. No differences were observed in the first approach, first taste, or intake ratio. A randomized block design lasting 12 wk was performed with 12 dogs distributed into 6 blocks, according to sex and body weight; one dog from each block was randomly allocated to each diet. Fecal characteristics and metabolites were measured in weeks 0, 4, 8, and 12, VSC and coat quality in weeks 4, 8, and 12, and apparent total tract digestibility (ATTD) of nutrients and energy in week 12. The inclusion of shrimp hydrolysate did not affect intake, but increased fecal output (dry matter, DM, basis, P < 0.05). Fecal butyrate concentration was lower (P < 0.05) in dogs fed the experimental diet. The inclusion of shrimp hydrolysate did not affect ATTD of nutrients and energy, and VSC. Both diets promoted high coat quality. The experimental diet decreased gloss and general evaluation scores in week 4 (P < 0.05), but improved scale scores in weeks 4 and 12 (P < 0.05). Overall, the findings indicate the potential of including shrimp hydrolysate in diets for dogs, fostering a more sustainable industry.
为了实现更高的可持续性，宠物食品行业可以增加来自人类食物链的动物副产品的使用，并且已经有研究报道称鱼水解物有益于犬类健康。然而，关于替代海洋水解物在犬粮中的影响的研究还很有限。本研究评估了用虾水解物替代小麦面筋（实验日粮）在膨化全价日粮（对照日粮）中的效果，该研究在 12 只健康成年比格犬中进行了适口性、采食量、消化率、粪便特性和代谢物、口腔挥发性硫化合物（VSC）以及被毛质量的评估。采用 2 碗测试法进行了日粮适口性评估，共 12 只健康成年比格犬参与了该测试。在第一次接近、第一次品尝或采食量比例方面，两组日粮均无差异。采用随机分组设计，持续 12 周，12 只犬分为 6 组，根据性别和体重分组；每组中的一只犬被随机分配到一种日粮。在第 0、4、8 和 12 周测量粪便特性和代谢物，在第 4、8 和 12 周测量 VSC 和被毛质量，在第 12 周测量营养物质和能量的表观全肠道消化率（ATTD）。虾水解物的添加没有影响采食量，但增加了粪便产量（干物质基础，P<0.05）。喂养实验日粮的犬粪便中丁酸浓度较低（P<0.05）。虾水解物的添加不影响营养物质和能量以及 VSC 的 ATTD。两种日粮均能保持犬被毛质量高。实验日粮在第 4 周降低了光泽和整体评价得分（P<0.05），但在第 4 和 12 周提高了鳞片评分（P<0.05）。总的来说，这些发现表明在犬粮中添加虾水解物具有潜力，可以促进更可持续的行业发展。
