Zare Mahyar, Tran Hung Quang, Prokešová Marketa, Stejskal Vlastimil
Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters, University of South Bohemia in České Budějovice, Husova třída 458/102, 370 05 České Budějovice, Czech Republic.
Animals (Basel). 2021 Sep 19;11(9):2735. doi: 10.3390/ani11092735.
The supplementation of fish diets with phytogenics can increase growth performance and can modulate immune system response. European perch (initial weight 25.0 ± 0.4 g) were fed a diet including 0 (Control), 10 (G10), 20 (G20), and 30 (G30) g kg garlic powder. No significant difference in the growth parameters and somatic indices were observed. Significantly higher fat digestibility was observed in G10 and G30 diets compared to in the control and G20 diets( < 0.05). Significantly greater red blood cell and white blood cell counts were observed with the G10 diet ( < 0.05). Garlic significantly decreased serum cholesterol in all of the experimental groups. Serum albumin was significantly higher in the G10 and G20 diets ( < 0.05). Immediately after the overcrowding stress challenge, the garlic groups showed significantly higher cortisol levels than the control group, while no significant difference was observed in the glucose concentration among groups. At 1 h post-stress, all of the groups that had been fed a garlic-supplemented diet showed lower cortisol levels than the control group, and this trend was maintained at 6 and 24 h post stress ( < 0.05), and glucose level in all garlic groups was significantly lower than control ( < 0.05). Garlic at 10 g kg in feed can improve apparent fat digestibility and selected blood parameters and can enhance resistance against high-density and net handling stress in Eurasian perch.
在鱼类饲料中添加植物源添加剂可以提高生长性能，并调节免疫系统反应。用含0（对照）、10（G10）、20（G20）和30（G30）克/千克大蒜粉的饲料喂养欧洲鲈鱼（初始体重25.0±0.4克）。未观察到生长参数和体指数有显著差异。与对照和G20饲料相比，G10和G30饲料中的脂肪消化率显著更高（P<0.05）。G10饲料组的红细胞和白细胞计数显著更高（P<0.05）。大蒜显著降低了所有实验组的血清胆固醇。G10和G20饲料组的血清白蛋白显著更高（P<0.05）。在过度拥挤应激挑战后立即观察发现，大蒜组的皮质醇水平显著高于对照组，而各组间葡萄糖浓度无显著差异。应激后1小时，所有喂食含大蒜饲料的组的皮质醇水平均低于对照组，且这一趋势在应激后6小时和24小时保持（P<0.05），所有大蒜组的葡萄糖水平均显著低于对照组（P<0.05）。饲料中添加10克/千克大蒜可提高欧洲鲈鱼的表观脂肪消化率和选定的血液参数，并增强其对高密度和网箱处理应激的抵抗力。
