Effects of dietary xylanase plus β-glucanase levels on total-tract nutrient and energy digestibility and N balance of growing pigs fed diets containing corn distillers dried grains.

Autor: Dereck, Bryan Francisco Castro, Giacomel, Elias, de Souza, Caroline, de Freitas, Leonardo Willian, Straub, Igor Willian Wrobel, Corassa, Anderson, Ton, Ana Paula Silva, Gois, Franz Dias, Fuentes, Jhunior Abrahan Marcía, Sbardella, Maicon
Zdroj: Tropical Animal Health & Production; Oct2023, Vol. 55 Issue 5, p1-8, 8p
Abstrakt: The addition of corn distillers dried grains (corn-DDG) to pig diets has been limited due to concerns about fiber content. The aim of the present study was to determine the metabolizable energy of corn-DDG (Exp. I) and the dose-response effects of dietary xylanase plus β-glucanase on the nutrient and energy digestibility of growing pigs fed diets containing 25% corn-DDG (Exp. II). Pigs in individual cages were subjected to feeding periods of 5 days for voluntary feed intake quantification followed by 5 days for collection of feces and urine. In Exp. I, 10 castrated male pigs with 61.10 ± 3.25 kg BW distributed in a randomized complete block design experiment with five replications were fed a reference diet or a test diet (75% reference diet plus 25% corn-DDG). In Exp. II, 10 castrated male pigs with 29.69 ± 3.57 kg BW distributed in a Latin square design (two squares with four replicates in time) experiment were fed with 5 dietary xylanase plus β-glucanase levels (0, 50, 100, 200, or 400 mg/kg) added to diets formulated with 25% corn-DDG. The corn-DDG had 26.5% crude protein, 5.94% ether extract, 55.5% neutral detergent fiber (NDF), and 4.248 kcal/kg gross energy. The metabolizable energy of corn-DDG was 3.657 ± 189 kcal/kg. Increasing dietary xylanase plus β-glucanase quadratically influenced (P < 0.05) the NDF digestibility and digestible energy in growing pigs fed diets containing 25% corn-DDGS. Compared to the control, dietary xylanase plus β-glucanase addition increased digestibility and reduced metabolizability of crude protein. The addition of dietary xylanase plus β-glucanase to growing pig diets containing corn-DDG increased NDF digestibility, allowing for additional dietary energy and protein availability. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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