The Effect of Different Bone and Analytical Methods on the Assessment of Bone Mineralization to Dietary Phosphorus, Phytase, and Vitamin D in Finishing Pigs

Eight hundred eighty-two pigs (initially 73.2 ± 0.7 lb) were used to evaluate the effects of different bones and analytical methods on assessment bone mineralization response dietary P vitamin D in growing-finishing pigs. Pens (20 per pen) randomized 1 5 treatments a completely design with 9 pens treatment. Treatments formulated have varying levels P, phytase, potentially provide wide differences characteristics. After feeding diets for 112 d, nine treatment euthanized bone, blood, urine analysis. There no significant final BW, ADG, ADFI, F/G (P > 0.10), or ash (bone × interaction, 0.10) regardless ashing method. The density mineral content was dependent upon (density = 0.053; 0.078). metacarpals, fibulas, 2nd rib 0.05). For 10th density, fed industry had increased < 0.05) compared NRC deficient extra 25(OH)D3 (HyD) intermediate. Pigs from HyD D, monocalcium In summary, responses varied depending bone. difference between procedures more apparent than diets. Differences most ribs.