An experiment was conducted to evaluate the effectof different fluorine:phosphorus ratios in the diet on performance of broilerchickens. One thousand broiler chickens with one day old were allotted to acompletely randomized experimental design with four treatments with five replicationsof fifty broilers per experimental unit. The treatments was composed by fourphosphorus sources with fluorine: phosphorus ratios of 1:40, 1:60,1:80, 1:100and fed during three experimental phases: 1-21, 22-42 and 43-49days. In each phase, feed intake, weight gain and feed conversion were evaluated.At the end of experiment, two birds per replication were slaughtered and theirtibias and samples of muscle tissue from breast were collec
