This study aimed to evaluate the effects of essential oil (EO) of Lippia sidoides, Ocimum gratissimum, and Zingiber officinale in the diet of tambaqui (Colossoma macropomum) growth, hematological and immunological parameters. The survival rate was also calculated after challenge with Aeromonas hydrophila. Seven diets containing 32 % crude protein were formulated as follows: control (0 g/kg of EO), 0.625 and 1.25 g/kg of L. sidoides EO; 1.25 and 5.0 g/kg of O. gratissimum EO; 1.25 and 5.0 g/kg of Z. officinale EO, in triplicate. Tambaqui fed diets supplemented with EO of L. sidoides, O. gratissimum, and Z. officinale did not present significant differences in the growth parameters. After 30 and 60 days of feeding, performance and hematological parameters were evaluated. Reductions in total thrombocytes number occurred after 30 days of feeding with 1.25 g/kg and 5.0 g/kg O. gratissimum EO. After 60 days of feeding, fish were challenged with A. hydrophila (1.6 × 10⁸ UFC mL⁻¹) and were observed for 10 days. Fish fed with diets supplemented with L. sidoides EO at 0.625 g/kg and 1.25 g/kg showed a higher nonspecific immune response through the increased respiratory activity of leukocytes after challenge. Additionally, there was a decrease in plasma glucose levels and no alteration of the total protein levels. Moreover, after the challenge, the highest survival rate occurred among fish fed 0.625 g/kg L. sidoides EO, while treatments with O. gratissimum and Z. officinale EO did not affect fish survival. This is the first report of L. sidoides EO in tambaqui diets. More studies are warranted to adjust the concentration and periods of treatment regarding diets supplemented with L. sidoides EO or thymol in treatment of bacterial fish diseases.

这项研究的目的是评估的精油（EO）的影响马鞭草sidoides，丁香罗勒和生姜在坦巴基的饮食（淡水白macropomum）的增长，血液学和免疫学指标。嗜水气单胞菌攻击后还计算了存活率。包含32％粗蛋白的7种日粮的配方如下：对照（0 g / kg EO），0.625和1.25 g / kg的L. sidoides EO；1.25和5.0 g / kg的O. gratissimum EO; 1.25和5.0 g / kg的Z.officinale EO一式三份。塔姆巴基（Tambaqui）喂养的饲料中添加了西多汁乳杆菌（EO ）O. gratissimum和Z. officinale在生长参数上没有显着差异。喂食30天和60天后，评估性能和血液学参数。饲喂1.25 g / kg和5.0 g / kg的O. gratissimum EO喂养30天后，总血小板数量减少。喂食60天后，用亲水曲霉（1.6×10 ⁸ UFC mL ^-1）攻击鱼，并观察10天。鱼类饲料中添加了西多杆菌在激发后，白细胞的呼吸活动增加，EO在0.625 g / kg和1.25 g / kg时显示出更高的非特异性免疫反应。另外，血浆葡萄糖水平降低，总蛋白水平没有改变。此外，挑战后，以0.625 g / kg的L. sidoides EO喂养的鱼中最高的成活率，而用O. gratissimum和Z. officinale EO的处理不影响鱼的生存。这是tambaqui饮食中L. sidoides EO的首次报道。有必要进行更多的研究来调整补充L的饮食的浓度和治疗时间。思多德 EO或百里酚在细菌性鱼类疾病的治疗中。