Calcium and phosphorus requirements of finishing meat quailABSTRACT -Three experiments were carried out to estimate the calcium and phosphorus requirements of meat quail.In the first experiment (1-14 days of age), 1,250 meat quails were placed in a 5 × 5 factorial arrangement (calcium levels = 0.65, 0.76, 0.87, 0.98 and 1.09% × phosphorus levels = 0.12, 0.22, 0.32, 0.42 and 0.52%), totaling 25 treatments, with two replications of 25 birds per experimental unit. The different calcium levels did not affect bird performance. Body weight, weight gain and optic density were influenced in a quadratic form by phosphorus levels and the phosphorus requirement was estimated at 0.41%. The levels of 0.65% calcium and 0.41% phosphorus in diet were enough to meet the requirement of initial phase meat quail. In the second experiment (15-35 days of age), 1,500 meat quails were placed in a 5 × 5 factorial arrangement (calcium levels = 0.61, 0.71, 0.81, 0.91 and 1.01% × phosphorus levels = 0.29, 0.34, 0.39, 0.44 and 0.49%), totaling 25 treatments, with two replications of 30 birds per experimental unit. Differences were not observed of the calcium and phosphorus levels on bird performance. Optic density was influenced in a quadratic form by phosphorus levels and the phosphorus requirement was estimated at 0.41%. In the third experiment, to assess the calcium and phosphorus balance (28-35 days of age), a linear effect was observed on the calcium intake and excretion with the increase in the calcium levels in the diets. The levels of 0.61% calcium and 0.41% phosphorus in the diet were enough to meet the requirement of finishing meat quail. The calcium levels did not affect bird performance at 1-14 and 15-35 days of age, showing, respectively, 0.65 and 0.61% calcium levels were enough to meet the of meat quail requirement. The estimate of 0.41% phosphorus promoted performance of finishing meat quail.

RESUMOand 2,408 kcal/kg, respectively. The coefficients of HMSS with low tannin were of 60.42; 59.95; 5.11; 39.58% and 2578 kcal/kg, respectively, as-fed basis (65.28% DM). In the performance assay, eight hundred and forty chicks were assigned to a completely randomized experimental design, with seven treatments, four replications and thirty chicks per experimental unit. Treatments consisted of a corn-soybean meal -based diet and six with 33, 66 and 100% HMSS with high or low content replaced by dry corn. Increasing HMSS levels with high tannin contents in diets caused a linear decrease on weight, weight gain, feed intake at 21 and 40 days old, but this effect was not observed for HMSS of low tannin content. Forty-day-old broilers fed diets with HMSS of high tannin content in 66 and 100% replacement levels showed lower weight and lower weigh gain. However, broilers fed HMSS with low tannin content did not differ from control. Linear decrease on the chicken leg color of was observed when HMSS was included in the diets. Performance results demonstrated that HMSS with high tannin content may replace um 33% of corn and with low tannin HMSS up to 100% of corn in diets of broilers, with no effect on performance and with lower cost per kilogram of produced broiler.