Investigation of the effects of using different mixtures of Nettle (Urtica dioica), Pennyroyal (Mentha pulegium) and Zizaphora (Zizaphora tenuior) medicinal plants on performance, carcass quality and blood parameters of broilers

This experiment was conducted to evaluate the effects using different mixtures of Nettle, Pennyroyal and Zizaphora medicinal plants on performance, carcass quality, biochemical and immunity parameters of broilers. This experiment was conducted in a completely randomized design with 240 of Ross-308 strain broiler in 4 treatments and 3 replicates (with 20 bird in each replicate) from 1 to 42 days and included: 1) control group no medicinal plants, 2) 1% Nettle and 0.5% of each others medicinal plants, 3) 1% of Pennyoyal and 0.5% of each others medicinal plants and 4) 1% of Zizaphora and 0.5% of each others medicinal plants. The results showed that using different mixtures of Nettle, Pennyroyal and Zizaphora medicinal plants have significantly effects on performance and carcass traits of broilers (P<0.05). The highest amount of daily weight gain (46.32g), the highest percents of carcass and breast (72.72%) and (33.67%) and the lowest percent of abdominal fat (3.4%) were observed in 3 experimental group. The overall results showed that the using of medicinal plants mixtures like 3 experimental group, has positive effects on performance and carcasses traits of broilers.