Evaluation and Response of Farmers on The Application of Biosecurity System for Layer Chicken Farming in Lendah District KulonprogoFrancy Risvansuna, Yus Peisal Nur Hikmat and Gawong SatyaE3S Web Conf., 232 (2021) 01014DOI: https://doi.org/10.1051/e3sconf/202123201014