Vembuvizhivendan, TamilamKandasamy, ThangavelTANUVAS2020-03-132020-03-132017-10http://krishikosh.egranth.ac.in/handle/1/5810145379TNV_SIJVS_2017_5(2)16-23The house fly is considered the major pest species associated with poultry manure especially in caged layer operations. Namakkal area is the chief poultry belt of Tamil Nadu. Intensity of house fly population in narrow caged layer houses and high rise caged layer houses was monitored from June 2007 to May 2008 by baited jug trap method. In poultry farms, the intensity of house fly population was low to moderate from June to August but increased during the months of October and November in narrow caged layer houses while high rise caged layer houses witnessed a very high level of fly population during the months of September and October. The fly population was found to be low throughout the winter season. After that, a steady rise in the fly intensity was noticed from March to May’08. A marked variation in the fly population was observed between narrow caged layer houses and high rise caged layer houses.enVeterinary ScienceArticle