Growth Performance and Some Serum, Bone and Fecal Parameters of Broilers Fed with Different Levels of Calcium and Phosphorus

Aim of the study was to evaluate the effects of diet non-phytate phosphorus (P) and calcium (Ca) level on growth performance and some blood, bone and faeces parameters of broilers. A total of 480 one-day-old Ross 308 broilers were randomly allocated to 3 dietary treatments with 5 replicates for a 42-d study. Corn-soybean meal based diets were consisted of three different Ca and P concentrations for starter and grower periods. High, medium and low Ca and P levels in starter and grower periods were 1.05-0.49, 0.95-0.44, 0.85-0.41% and 0.87-0.42, 0.78-0.38, 0.69-0.34%, respectively. After the first 21-d feeding period, no differences were observed for feed intake (FI) but body weight (BW) and feed conversion ratio (FCR) were higher (P0.05). Fecal ash, tibia and sternum weight and sternum ash weren’t affected from the Ca and P concentrations but tibia ash were lower (P