title: Energy and phosphorus values of sunflower meal and rice bran for broiler chickens using the regression method.
abstract: The energy and phosphorus values of sunflower meal (SFM) and rice bran (RB) were determined in 2 experiments with Ross 708 broiler chickens from 15 to 22 d of age. In Exp.1, the diets consisted of a corn-soybean meal reference diet (RD) and 4 test diets (TD). The TD consisted of SFM and RB that partly replaced the energy sources in the RD at 100 or 200 g/kg and 75 or 150 g/kg, respectively, such that the equal ratios were maintained for all energy containing ingredients across all experimental diets. In Exp.2, a cornstarch-soybean meal diet was the RD and TD consisting of SFM and RB that partly replaced cornstarch in the RD at 100 or 200 g/kg and 60 or 120 g/kg, respectively. Addition of SFM and RB to the RD in Exp.1 linearly decreased (P < 0.01) the digestibility coefficients of DM, energy, ileal digestible energy (IDE), metabolizability coefficients of DM, nitrogen (N), energy, N correct energy, metabolize energy (ME), and nitrogen-corrected ME. Except for RB, the increased levels of the test ingredients in RD did affect the metabolizability coefficients of N. The IDE values (kcal/kg DM) were 1,953 for SFM and 2,498 for RB; ME values (kcal/kg DM) were 1,893 for SFM and 2,683 for RB; and MEn values (kcal/kg DM) were 1,614 for SFM and 2,476 for RB. In Exp.2, there was a linear relationship between phosphorus (P) intake and ileal P output for diets with increased levels of SFM and RB. In addition, there was a linear relationship between P intake and P digestibility and retention for diets with increased levels of SFM. There were a quadratic effect (P < 0.01) and a tendency of quadratic effect (P = 0.07) for P digestible and total tract P retained, respectively, in the RB diets. The P digestibility and total tract P retention from regression analyses for SFM were 46% and 38%, respectively.
authors.affiliation: Department of Animal Sciences, Purdue University, West Lafayette, IN 47907 Department of Animal Science, Federal University of Minas Gerais, Belo Horizonte, Brazil.
authors.forename: L F P
authors.initials: LF
authors.lastname: Pereira
authors.affiliation: Department of Animal Sciences, Purdue University, West Lafayette, IN 47907 ladeola@purdue.edu.
authors.forename: O
authors.initials: O
authors.lastname: Adeola
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002645:Chickens / Q000502:physiology*; D004032:Diet / Q000662:veterinary*; D004063:Digestion; D002149:Energy Intake; D004734:Energy Metabolism; D006368:Helianthus / Q000737:chemistry*; D007082:Ileum / Q000378:metabolism; D008297:Male; D009753:Nutritive Value; D012275:Oryza / Q000737:chemistry*; D010758:Phosphorus / Q000378:metabolism; D012044:Regression Analysis
chemical_list: D010758:Phosphorus
keywords: broiler chickens; metabolizable energy; phosphorus; regression method