The aim of this study was to determine whether curcumin and yucca extract addition in broiler feed improves growth, health, and meat quality, and to measure coccidiostatic and antimicrobial activity so as to enable replacement of conventional performance enhancers. We used 240 birds in four treatments: CN, basal feed with antibiotics and coccidiostatic drugs; CU, feed with 100 mg/kg of curcumin; YE, feed with 250 mg/kg of yucca extract; and CU + YE, feed with the combination of 100 mg curcumin/kg and 250 mg yucca extract/kg. A significant reduction in oocysts was observed in birds supplemented with combined additives (CU + YE) at days 37 compared to other treatments and at 42 days in relation to the CU treatment. At 42 days, the total bacterial counts for the CN and CU treatments were lower than the others. Birds fed the additive had lower numbers of leukocytes, lymphocytes, and heterophils than did those in the CN treatment. The highest levels of antioxidants in meat were observed in the treatments with the additives, together with lower levels of lipid peroxidation compared to the CN. The lowest protein oxidation was observed in the CU + YE treatment in relation to the other treatments. Lower total levels of saturated fatty acids (SFA) were observed in the CU treatment than in the CN. There were lower levels of monounsaturated fatty acids (MUFA) in the meat of birds in the YE treatment in relation to the others. Higher levels of total polyunsaturated fatty acids (PUFA) were observed in birds that consumed curcumin, individually and in combination with yucca extract. Taken together, the data suggest that curcumin and yucca extract are additives that can potentially replace conventional growth promoters; they improved bird health. Changes in the fatty acid profile of meat (increase in the percentage of omegas) are beneficial to the health of the consumer.

这项研究的目的是确定在肉鸡饲料中添加姜黄素和丝兰提取物是否能改善生长，健康和肉质，并测量抗球虫活性和抗菌活性，从而能够替代传统的性能增强剂。我们用240种鸡进行了四种处理：氯化萘，含抗生素和抗球虫药的基础饲料；CU，以100 mg / kg姜黄素喂养; YE，以250 mg / kg丝兰提取物为食；和CU + YE，以100 mg姜黄素/ kg和250 mg丝兰提取物/ kg的组合喂养。与其他处理相比，在第37天和与CU处理有关的第42天，观察到补充了混合添加剂（CU + YE）的家禽的卵囊显着减少。在第42天，CN和CU处理的细菌总数低于其他细菌。喂食该添加剂的禽类的白细胞，淋巴细胞和异嗜性细胞的数量少于CN处理中的禽类。与CN相比，在用添加剂处理的过程中观察到肉类中的抗氧化剂含量最高，同时脂质过氧化水平也较低。与其他处理相比，在CU + YE处理中观察到最低的蛋白质氧化。在CU处理中观察到的饱和脂肪酸（SFA）总量低于在CN中。在YE处理中，禽肉中的单不饱和脂肪酸（MUFA）含量较其他品种低。在食用姜黄素的家禽中，单独或与丝兰提取物合用时，观察到较高的总多不饱和脂肪酸（PUFA）水平。在一起 数据表明姜黄素和丝兰提取物是可以替代常规生长促进剂的添加剂。他们改善了鸟类健康。肉的脂肪酸谱变化（增加的欧米茄百分比）有益于消费者的健康。