In this study, it was aimed to investigate the effect of feeding broilers with lichen supplemented feed on performance parameters and organ weight. 120 male Ross 308 animals (chicks) were used in the study. Chicks were randomly divided into 3 groups with 4 replications. There were 10 chicks in each subgroup. The control group (Group C) was formed with the group fed with additive-free feed. Lichen 1 group (Group L1) included the chicks fed with lichen added at the rate of 0.1% to their feed, while lichen 2 group (Group L2) included the ones fed with lichen added at the rate of 0.05% to their feed. In the 7-14 day period of the study, the highest body weight gain (BWG) and feed intake (Fİ) were in group L2 while the lowest feed conversion rate (FCR) was in the control group. When the whole study was evaluated, the highest Fİ and body weight (BW) were in group L2 while the lowest FCR was determined in the control group. Group L2 had the lowest mortality rate in the study. The hottest and coldest carcass and neck, thigh, chest and heart weights in the study were observed in Group L2. Consequently, it was found that lichens can be used as antimicrobial feed additive to broiler rations at certain rates.
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