Effects of Xylanase in high-co-product diets on nutrient digestibility in finishing pigs (2012)

Abstract

A total of 36 pigs (PIC 337 Ã-1050; initially 185 lb BW) were used in a 14-d study to evaluate the effects of xylanase (Porzyme 9302; Danisco Animal Nutrition, St. Louis, MO) in growing-finishing diets varying in dietary fiber on nutrient digestibility. Pigs were randomly allotted to 1 of 6 dietary treatments in a 2 Ã-3 factorial. Main effects were increasing dried distillers grains with solubles (DDGS; 35, 42.5, and 50%) with or without xylanase (0 or 4,000 units xylanase per kilogram of diet. The 6 treatment diets were corn-soybean mealâ€"based with 15% added wheat middlings (midds), with 6 replications per treatment. All diets were fed in meal form. Multiple enzyme Ã-DDGS interactive effects (P < 0.05) were observed for digestibility of various nutrients. The majority of these interactions resulted from differences in response to increasing DDGS with and without xylanase. In diets with xylanase, apparent digestibility generally decreased as DDGS increased. In diets without xylanase, apparent digestibility decreased as DDGS increased from 35 to 42.5% but increased in diets containing 50% DDGS. Overall, despite the interactions, increasing DDGS regardless of enzyme inclusion lowered (quadratic, P < 0.01) apparent fecal digestibility of DM, GE, ADF, NDF, and zinc as well as fecal digestibility (linear, P < 0.02) of fat, Ca, and P. Despite the interactions, adding dietary xylanase did not improve digestibility in corn-soybean mealâ€"based diets containing fibrous co-products. SummaryA total of 36 pigs (PIC 337 × 1050; initially 185 lb BW) were used in a 14-d study to evaluate the effects of xylanase (Porzyme 9302; Danisco Animal Nutrition, St. Louis, MO) in growing-finishing diets varying in dietary fiber on nutrient digestibility. Pigs were randomly allotted to 1 of 6 dietary treatments in a 2 × 3 factorial. Main effects were increasing dried distillers grains with solubles (DDGS; 35, 42.5, and 50%) with or without xylanase (0 or 4,000 units xylanase per kilogram of diet. The 6 treatment diets were corn-soybean meal-based with 15% added wheat middlings (midds), with 6 replications per treatment. All diets were fed in meal form. Multiple enzyme × DDGS interactive effects (P < 0.05) were observed for digestibility of various nutrients. The majority of these interactions resulted from differences in response to increasing DDGS with and without xylanase. In diets with xylanase, apparent digestibility generally decreased as DDGS increased. In diets without xylanase, apparent digestibility decreased as DDGS increased from 35 to 42.5% but increased in diets containing 50% DDGS. Overall, despite the interactions, increasing DDGS regardless of enzyme inclusion lowered (quadratic, P < 0.01) apparent fecal digestibility of DM, GE, ADF, NDF, and zinc as well as fecal digestibility (linear, P < 0.02) of fat, Ca, and P. Despite the interactions, adding dietary xylanase did not improve digestibility in corn-soybean meal-based diets containing fibrous co-products.

Nutrient digestibility of multi-enzyme supplemented low-energy and AA diets for grower pigs1

“…However, the effects of adding NSP-degrading enzymes to corn DDGS-based diets for pigs have been inconsistent; most studies did not report increased energy and nutrient digestibilities in pigs fed corn DDGSbased diets due to supplemental NSP-degrading enzymes. For instance, addition of xylanase (Asmus et al, 2012;Ndou et al, 2015;Jang et al, 2016;Moran et al, 2016) or a product that contained xylanase, β-glucanase, and cellulase activities (Rho et al, 2017(Rho et al, , 2018 to corn-soybean meal (SBM)corn DDGS-based diets for pigs did not affect apparent total tract digestibility (ATTD) of GE.…”

Growth performance, gastrointestinal and digestibility responses in growing pigs when fed corn–soybean meal-based diets with corn DDGS treated with fiber degrading enzymes with or without liquid fermentation1

“…DDGS-based diets supplemented with fiber-degrading enzymes (Widyaratne et al, 2009;Asmus et al, 2012;Kerr and Shurson, 2013). Moreover, we recently reported that feeding growing pigs corn DDGS steeped with a combination of commercial fiber degrading enzymes for 24 h did not improve ileal or total digestibility of nutrients, fiber and energy relative to control corn DDGS steeped with no enzymes (Rho et al, 2018).…”

Efficacy of feed enzymes in pig and poultry diets containing distillers dried grains with solubles: a review

“…() found a positive effect of xylanase addition on apparent faecal ADF digestibility in growing–finishing pigs fed a diet containing 15% or 30% cDDGS; however, the enzyme did not improve body weight gain (BWG), FI, feed conversion ratio (FCR), carcass quality or the digestibility of other nutrients. Results of a study with finishing pigs indicated that increasing levels of DDGS in the diet (35–50%) reduced the apparent faecal digestibility of DM, fat, GE, ADF, NDF, Zn, Ca and P (Asmus et al., ). Xylanase addition did not, however, increase the availability of nutrients (Asmus et al., ).…”

“…Results of a study with finishing pigs indicated that increasing levels of DDGS in the diet (35–50%) reduced the apparent faecal digestibility of DM, fat, GE, ADF, NDF, Zn, Ca and P (Asmus et al., ). Xylanase addition did not, however, increase the availability of nutrients (Asmus et al., ). An experiment by Yoon et al.…”