The objective of this study was to determine whether supplementation with a blend based on micro-encapsulated carvacrol, thymol, and cinnamaldehyde added to concentrate in growing lamb feed would affect performance or produce antioxidant and immunological responses. In our study, the blend mixed with concentrate was technically defined as a phytogenic. Thirty female animals were randomly distributed in three groups with five repetitions and two animals per repetition, as follows: Control (basal feed), T500 (basal feed supplemented with 500 mg phytogenic/kg of concentrate) and T1000 (basal feed with 1000 mg phytogenic/kg of concentrate). Weights were measured and blood was collected on days 0, 15, 30 and 40 of the study. The T1000 animals had greater weight gain during the experimental period (0 to 40) as well as from day 30–40 of the experiment compared to the Control group. The T500 and T1000 lambs had greater weight gain on the 15^th to 40^th day when compared to Control. T1000 lambs had lower numbers of leukocytes and lymphocytes on days 30 and 40 compared to Control. Cholesterol levels were greater on day 30 in the T500 group than in the Control group. Levels of reactive oxygen species, lipid peroxidation and glutathione S-transferase did not differ between treatments. The activities of glutathione peroxidase (GPx) and glutathione reductase were lower in the T1000 animals than in the Control at day 30; this was different from what was observed on day 40, when GPx showed a significant increase in T1000. We conclude that supplementation with this phytogenic product in lamb feed stimulated antioxidant and anti-inflammatory responses and consequently increased weight gain in lambs. In practical situations, we expect that the inclusion of this additive in the diet of female lambs will produce more healthy and heavier ewes that achieve the reproductive life earlier.

这项研究的目的是确定添加基于微胶囊香芹酚，百里酚和肉桂醛的混合物添加到浓缩羊羔饲料中是否会影响生产性能或产生抗氧化和免疫反应。在我们的研究中，与浓缩物混合的混合物在技术上被定义为具有植物性。将30只雌性动物随机分为三组，每组重复五次，每组重复两次，如下：对照（基础饲料），T500（补充500 mg植物生长素/ kg浓缩物的基础饲料）和T1000（1000植物生长素的基础饲料） / kg精矿）。在研究的第0、15、30和40天测量体重并收集血液。与对照组相比，在实验期间（0至40）以及实验的30至40天，T1000动物的体重增加更大。T500和T1000羔羊的体重增加了15只^TH 40^日与对照组相比 与对照相比，T1000羔羊在第30天和第40天的白细胞和淋巴细胞数量较少。在T500组中，胆固醇水平在第30天高于对照组。治疗之间的活性氧水平，脂质过氧化和谷胱甘肽S-转移酶水平没有差异。在第30天，T1000动物的谷胱甘肽过氧化物酶（GPx）和谷胱甘肽还原酶的活性低于对照组。这与第40天观察到的情况不同，当时GPx显示T1000明显增加。我们得出的结论是，在羔羊饲料中添加这种植物性产物可刺激抗氧化剂和抗炎反应，从而增加羔羊的体重增加。在实际情况下，