Moorthy, M.TANUVAS2020-02-272020-02-272009-02http://krishikosh.egranth.ac.in/handle/1/5810143838TNV_PL_Feb2009_9(2)_91-92The most practical program for broilers rearing has been the use of all in all out system. The farm will have only one batch of broilers. Belonging to the same batch at any time. Although more than one brooder house may be with in the enclosure the chicks should be similar age, the oldest being no more than 7 days older than the younger.en-USVeterinary SciencePoultry ScienceArticle