270 Effects of Different Watering Options on Standardized Ileal Digestibility of Amino Acids and net Energy in Diets fed to Growing Pigs

Abstract Two experiments were conducted to test the hypothesis that different watering options affect standardized ileal digestibility (SID) of amino acids (AA), apparent total tract (ATTD) dry matter (DM) and gross energy (GE), concentration net (NE) by growing pigs. A corn-soybean meal-based diet was used in both experiments. There 3 treatments: 1) feeder plus a water nipple located outside feeder, 2) wet-dry with inside 3) combined system also an nipple. In Exp. 1, pigs (n = 6; initial weight 27.53 kg) equipped T-cannula distal ileum allotted treatments using replicated × Latin square design 6 three 7-d periods. All fed N-free for additional period determine basal endogenous losses AA. Chromic oxide added all diets digesta collected according standard procedures. 2, 24 (initial 50.23 chambers (i.e., 4 per chamber) 15-d Oxygen consumption CO2 CH4 productions measured during fasting states fecal urine samples collected. experiments, allowed ad libitum access feed water. Results indicated there no differences among SID AA, intake, heat production, ATTD DM GE, or NE diet. conclusion, did not DM, GE meal