Relative bioavailability of supplemental inorganic zinc sources for chicks

• Published in: Journal of animal science Vol. 75; no. 12; pp. 3195 - 3205
• Main Authors: Sandoval, M, Henry, P.R, Ammerman, C.B, Miles, R.D, Littell, R.C
• Format: Journal Article
• Language: English
• Published: Savoy, IL Am Soc Animal Sci 01-12-1997; American Society of Animal Science; Oxford University Press
• Subjects: Animal productions; Animals; BIOAVAILABILITY; BIODISPONIBILIDAD; BIODISPONIBILITE; Biological and medical sciences; Biological Availability; Bone and Bones - chemistry; CARBONATE; CARBONATES; CARBONATOS; Chickens - metabolism; Chickens - physiology; CHICKS; CINC; DIET; Diet - veterinary; DIETA; Dietary Supplements; DOSAGE; DOSIFICACION; Eating - physiology; Feeds; Fundamental and applied biological sciences. Psychology; Glycine max - standards; Kidney - chemistry; Linear Models; Liver - chemistry; MINERAL NUTRIENTS; NUTRIENTES MINERALES; OXIDES; OXIDOS; OXYDE; Pancreas - chemistry; POLLITO; Poultry; POUSSIN; Random Allocation; REGIME ALIMENTAIRE; SUBSTANCE NUTRITIVE MINERALE; SULFATE DE ZINC; SULFATO DE CINC; Terrestrial animal productions; Vertebrates; Zea mays - standards; ZINC; Zinc - administration & dosage; Zinc - analysis; Zinc - pharmacokinetics; ZINC SULPHATE; Vertebrata; Farming animal; Meat animals; Animal feeding; Chicken; Bioavailability; Aves; Zinc; Food supplement
• ISSN: 0021-8812; 1525-3163; 0021-8812
• DOI: 10.2527/1997.75123195x

Three experiments were conducted to investigate the relative bioavailability of reagent-grade (RG) and feed grade (FG) Zn sources for 1-d-old broiler chicks. In Exp. 1, 13 treatments included a basal corn-soybean meal diet (63 ppm Zn) or the basal diet supplemented with 400, 800, or 1,200 ppm Zn from RG sulfate, basic carbonate, oxide, or metal and fed for 20 d. Using multiple regression slope ratios with Zn sulfate set at 100%, bioavailability estimates were 78, 77, and 46% for carbonate, oxide, and metal, respectively. In Exp. 2, chicks were allotted randomly to 16 treatments that included a basal corn-soybean meal diet (75 ppm Zn) or basal diet supplemented with 300, 600, or 900 ppm Zn as either RG sulfate, FG sulfate-A, FG sulfate-B, FG oxide-A, or FG oxide-B and fed for 21 d. Multiple linear regression slope ratios gave relative estimates of 99, 81, 78, and 54% for sulfate-A, sulfate-B, oxide-A, and oxide-B sources, respectively, with RG sulfate set at 100%. In Exp. 3, chicks were fed a basal corn-soybean meal diet (35 ppm Zn) or the basal diet supplemented with 40, 80, or 120 ppm Zn from RG Zn sulfate, FG sulfate, or FG oxide and fed for 20 d. Multiple regression slope ratios with RG sulfate set at 100% gave relative bioavailability estimates of 94 and 74% for the FG sulfate and oxide, respectively. Bioavailability estimates were similar when Zn was supplemented to diets at high or low concentrations