This study aims to evaluate the economic impact of poisoning by Brachiaria grass in lambs from birth to weaning (suckling) and from weaning to slaughter (finishing) different levels of energy protein supplementation (EPS). In addition, we estimated the economic efficiency of removing lambs from the pasture as a control measure to minimize the losses caused by Brachiaria grass poisoning. Seventy lambs were used in the suckling phase, distributed in two nutritional treatments (control and creep feeding). Hospitalization expenses were US$ 1580.80 for the control treatment and US$ 256.16 for the creep feeding treatment. In the finishing phase, 48 lambs were distributed in four nutritional treatments, which consisted of increasing levels of EPS (mineral salt, 0.8, 1.6 and 2.4% of LW). The largest difference in total revenue (US$) was observed between 2.4% of BW EPS and mineral salt (− 2300.28) treatments. Hospitalization expenses were similar between nutritional treatments, being higher in the treatment 1.6% of BW EPS (US$ 578.15). The biggest difference in gross income (US$) observed was between 2.4% of BW EPS and mineral salt (− 1439.43) treatments. The Brachiaria grass poisoning caused economic losses to the sheep farming system, due to the death of lambs, reduced weight gain and lower weights at weaning and in the finishing phase. Brachiaria grass poisoning caused economic damage to the production system. There were direct losses, with the death of the lambs without supplementation, in the suckling and finishing phases. The supplementation increases the performance and reduces the mortality. The supplementation in high levels is efficient in reducing the economic impact of poisoning by Brachiaria grass in both periods of suckling and finishing.

本研究旨在评估从出生到断奶（哺乳）以及从断奶到屠宰（完成）不同水平的能量蛋白补充 (EPS) 的羔羊臂状草中毒的经济影响。此外，我们估计了将羔羊从牧场中移除作为控制措施的经济效率，以尽量减少由腕形动物造成的损失草中毒。在哺乳期使用了 70 只羔羊，分布在两种营养处理（对照和教槽喂​​养）中。对照治疗的住院费用为 1580.80 美元，蠕动喂养治疗的住院费用为 256.16 美元。在整理阶段，48 只羔羊被分配到四个营养处理中，其中包括增加 EPS 水平（矿物盐，LW 的 0.8、1.6 和 2.4%）。在 2.4% 的 BW EPS 和矿物盐 (− 2300.28) 处理之间观察到总收入（美元）的最大差异。营养治疗之间的住院费用相似，治疗费用高于 BW EPS 的 1.6%（578.15 美元）。观察到的总收入（美元）的最大差异在 2.4% 的 BW EPS 和矿物盐（- 1439.43）处理之间。腕关节草中毒给养羊系统造成了经济损失，原因是羔羊死亡、体重增加减少以及断奶和育肥阶段体重下降。腕部草中毒对生产系统造成经济损失。在哺乳期和育肥期有直接损失，羔羊在没有补充的情况下死亡。补充提高了性能并降低了死亡率。在哺乳期和育肥期，高水平的补充可有效降低臂状草中毒的经济影响。