SUMMARY In order to meet the high demand for eggs, poultry producers are using certain feed strategies, which can increase production, but may indirectly cause metabolic and other stress in the birds. To overcome these issues, natural plant extracts and ingredients, such as turmeric, can be added to the diet. The inclusion of turmeric, which has various beneficial properties, at levels of 0.75% and 1% in the diets can improve feed intake and significantly reduce cholesterol in broilers. Cholesterol in eggs has been shown to decrease by 16, 24 and 25% (P<0.05) when layers were fed 1, 2 and 4% turmeric in feed, respectively. Birds fed a high carbohydrate ration and supplemented with turmeric powder for 30 days prior to sexual maturity had 20% more egg production as compared to a control group. Lactobacillus spp. counts were significantly higher (P<0.01) in chickens fed 1% turmeric supplemented feed compared to unsupplemented birds. Hence, this review includes the effect of feeding turmeric on feed intake, feed conversion ratio, nutrient digestibility, biochemical parameters, egg production, egg qualities, intestinal morphology, gut bacteria and the genetic expression of toll-like receptors.

中文翻译：

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姜黄补充剂对蛋鸡生产、物理和生化参数的作用

总结 为了满足对鸡蛋的高需求，家禽生产者正在使用某些饲料策略，这些策略可以提高产量，但可能会间接引起家禽的代谢和其他压力。为了克服这些问题，可以在饮食中添加天然植物提取物和成分，如姜黄。在日粮中加入具有多种有益特性的姜黄，其含量为 0.75% 和 1%，可以提高采食量并显着降低肉鸡的胆固醇。当蛋鸡在饲料中分别饲喂 1%、2% 和 4% 姜黄时，鸡蛋中的胆固醇降低了 16%、24% 和 25%（P<0.05）。与对照组相比，在性成熟前 30 天喂食高碳水化合物日粮并补充姜黄粉的鸡的产蛋量增加了 20%。乳酸菌属 与未补充姜黄的鸡相比，饲喂 1% 姜黄补充饲料的鸡的计数显着更高（P<0.01）。因此，本综述包括饲喂姜黄对饲料摄入量、饲料转化率、营养消化率、生化参数、产蛋量、鸡蛋质量、肠道形态、肠道细菌和 Toll 样受体基因表达的影响。