One alpha-hydroxycholecalciferol improves growth performance, tibia quality, and meat color of broilers fed calcium- and phosphorus-deficient diets

Abstract

An experiment was conducted to evaluate the effects of one alpha-hydroxycholecalciferol (1α-OH D 3) on growth performance, tibia quality, and skin and meat color in broilers fed calcium (Ca)- and phosphorus (P)-deficient corn-soybean meal diets. A total of 288 male Ross broilers, at 21 days of age, were randomly assigned to three treatments with eight cages per treatment. Three levels of 1α-OH D 3 (0, 5, and 10 "g/kg) were added to a basal diet (0.50% Ca, 0.13% non-phytate phosphorus (NPP), and 0.35% total phosphorus (tP)) without vitamin D 3. As a result of this study, the addition of 1α-OH D 3 increased body weight gain (p<0.001), feed intake (p = 0.007), feed efficiency (p<0.001), tibia weight (p = 0.002), length (p<0.001), breaking-strength (p = 0.012), ash (p<0.001), Ca (p<0.001), and P content (p = 0.004). Dietary (1α-OH D 3) enhanced breast meat yellowness (p = 0.015) and the length and weight of the small intestine of the broilers. Moreover, (1α-OH D 3) decreased serum Ca concentration (p = 0.074) and breast meat redness (p = 0.010). These results indicate that the (1α-OH D 3) improves growth, tibia quality, and meat color in broilers fed Ca- and P-deficient cornsoybean meal diets.