Scaly-leg in chickens, also known as knemidokoptiasis, is caused by infection with Knemidokoptes spp. Chickens in backyard systems developed scaly skin lesions on their legs. This farm is not an industrialized farm for producing meat or eggs. A skin smear microscopic test identified the Knemidokoptes spp. mites, revealing both larvae and adults in the same chicken. Ivermectin was applied to control the knemidokoptiasis through oral and topical administration. However, there were no clinical effects observed after the application of ivermectin. Knemidokoptiasis worsens the quality of life in chickens. Effective control methods could be established in further studies.

• Kyeng yeon Eo(Department of Animal Health and Welfare, Semyung University, Jecheon-si, Chungcheongbuk-do 27136, Korea)
• Hwan goo Kang(Department of Animal Health and Welfare, Semyung University, Jecheon-si, Chungcheongbuk-do 27136, Korea)
• Mi rim Kwon(Department of Animal Health and Welfare, Semyung University, Jecheon-si, Chungcheongbuk-do 27136, Korea)
• Jinjoo Kim(Department of Animal Health and Welfare, Semyung University, Jecheon-si, Chungcheongbuk-do 27136, Korea)
• Jihoon Seok(ECOFARM, Jincheon-gun, Chungcheongbuk-do 27846, Korea)
• HyoungJoon Moon(Department of Animal Health and Welfare, Semyung University, Jecheon-si, Chungcheongbuk-do 27136, Korea) Corresponding author