Evaluation of Diets with Inclusion of Hydrothermal, Phytase, and Organic Acid Pretreated Canola Meal on Nutrient Digestibility in Swine

Enkhjargal Darambazar, Daalkhaijav Damiran and Denise Beaulieu

Sustainable Agriculture Research, 2021, vol. 9, issue 2, 41

Abstract: The objective of this study was to evaluate the effects of dietary inclusion of hydrothermal, phytase, and organic acid pretreated canola meal (CM) on nutrient digestibility in swine. A basal diet barley, wheat, and CM based, was formulated. Four diets containing 30% hydrothermal pretreated CM with 50% moisture and 40°C, phytase (1000 FTU/kg activity), and either citric acid (CA), malic acid (MA), or lactic acid (LA), and a control containing pretreated CM without phytase or organic acid were fed to 12 ileal-cannulated finisher pigs (initial average BW 105.3 ± 2.7 kg) in a completely randomized design over two periods of 9 days per period. Nutrient composition and phytate content of the diets, ileal digesta, and feces were analyzed and apparent ileal and total tract digestibilities were determined. The inclusion of hydrothermal, phytase, and CA or MA pretreated CM in the diet decreased phytate P (by up to 38.6%) (p < 0.05), consequently increasing available P (by up to 55.6%). Apparent ileal digestibility (AID) was improved for P by 19.9 ‒ 35.1% units and apparent total tract digestibility of DM by 10.3 ‒ 14.8% units, of protein by 6.6 ‒ 12.1% units, and of gross energy by 12 ‒ 17% units across the treatments (p < 0.05), while AID of CP for MA treatment was up by 4.7% units (p < 0.05) relative to the control, indicating improved diet utilization, thus reduced excretion to the environment.

Date: 2021
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