Abstract The present study was conducted to investigate the impacts of dietary supplementation of graded levels of herbal mixture powder (HMP) on growth performance, carcass traits, blood indices and meat quality of broilers. The herbal mixture consisted of (300 g [Capsicum annuum] Hot red pepper + 300 g Thymus vulgaris + 300 g Salvia rosmarinus + 150 g Pimpinella anisum + 150 g Mentha spicata + 300 g Nigella sativa + 300 g garlic [Allium sativum]). A total of 360 chicks of Hubbard broiler one-day-old were randomly distributed into six treatment groups. The groups consisted of the basal diet as a control and a powdered mixture of HMP groups at levels of (2.0, 3.0, 4.0, 5.0 and 6.0 g HMP/kg diet). The chicks fed a basal diet plus 5 g HMP/kg diet had the highest (p < .05) values of live body weight (LBW) and body weight gain (BWG) at five weeks of age. Serum total protein, globulin, liver enzymes and kidney parameter values were reduced in groups treated with different levels of HMP compared with the control. At the same time, values of albumin, A/G ratio, IgM and lysozymes were increased in chicks treated with HMP. The quality of stored meat and antioxidative parameters were improved in groups fed HMP. Thus, it is concluded that HMP could be used as a natural additive to the broiler diet to enhance the growth rate and improve blood parameters and meat quality. Also, the oxidative rancidity was less in the meat of treated chicks during the storage period as compared to control. Highlights Phytogenic additives are used to enhance growth and productive performance. Chicks fed 5 g herbal mixture/kg diet had the best growth performance. The quality of stored meat and antioxidative parameters were improved in groups fed the herbal mixture.

中文翻译：

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草本混合物粉的日粮分级水平是否会影响肉鸡的生长、胴体性状、血液指数和肉质？

摘要 本研究旨在研究日粮中添加分级水平的草药混合粉（HMP）对肉鸡生长性能、胴体性状、血液指标和肉质的影响。草药混合物由（300 克[辣椒] 辣椒+ 300 克百里香+ 300 克迷迭香+ 150 克茴香+ 150 克薄荷+ 300 克黑种草+ 300 克大蒜[大蒜]）组成。将 360 只 1 日龄哈伯德肉鸡随机分配到 6 个处理组。这些组由作为对照的基础饮食和水平为（2.0、3.0、4.0、5.0和6.0g HMP/kg饮食）的HMP组的粉末混合物组成。饲喂基础日粮加 5 克 HMP/kg 日粮的雏鸡最高（p < . 05) 五周龄时的活体重 (LBW) 和体重增加 (BWG) 值。与对照组相比，不同水平 HMP 治疗组的血清总蛋白、球蛋白、肝酶和肾脏参数值降低。同时，用HMP处理的小鸡的白蛋白、A/G比、IgM和溶菌酶的值增加。在喂食 HMP 的组中，储存的肉的质量和抗氧化参数得到改善。因此，可以得出结论，HMP 可用作肉鸡日粮的天然添加剂，以提高生长速度并改善血液参数和肉质。此外，与对照相比，在储存期间处理过的小鸡的肉中的氧化酸败较少。亮点 植物源添加剂用于促进生长和生产性能。饲喂 5 g 草药混合物/kg 日粮的小鸡生长性能最好。在喂食草药混合物的组中，储存的肉的质量和抗氧化参数得到改善。