Minyak Rajas is a natural medicine formulated from various herbal plants containing activeingredients with pharmacological activity. This study aims to determine the effect of Minyak rajas onthe lungs of male free-range chickens. The study used a completely randomized design with fourtreatments, namely control and three doses of Minyak rajas orally. A total of 24 male free-rangechickens weighing 500-600grams were randomly divided into four treatments with six replications.As a control in the P0 group, they were fed a placebo with distilled water instead of Minyak rajas.Minyak Rajas treatment in groups P1, P2 and P3 respectively with doses of 92,3mg/kg, 184,6mg/kgand 369,2mg/kg mixed with feed for six weeks. Data analysis using the Mann-Whitney test showedthat the histopathological features of the lungs found in the form of fatty degeneration, inflammatorycell infiltration, bleeding and necrosis were not significantly different (P>0.05) in all treatments. It canbe concluded that the administration of Minyak Rajas has no effect on changes in thehistopathological picture of the lungs of male free-range chickens. Further research can be done toincrease the dose of giving Minyak Rajas orally to determine the dose limit of giving rajas oil andusing more accurate parameters in identifying damage to an organ.
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