Nutritional and Functional Roles of Phytase and Xylanase Enhancing the Intestinal Health and Growth of Nursery Pigs and Broiler Chickens

Abstract

This review paper discussed the nutritional and functional roles of phytase and xylanase enhancing the intestinal and growth of nursery pigs and broiler chickens. There are different feed enzymes that are currently supplemented to feeds for nursery pigs and broiler chickens. Phytase and xylanase have been extensively studied showing consistent results especially related to enhancement of nutrient digestibility and growth performance of nursery pigs and broiler chickens. Findings from recent studies raise the hypothesis that phytase and xylanase could play functional roles beyond increasing nutrient digestibility, but also enhancing the intestinal health and positively modulating the intestinal microbiota of nursery pigs and broiler chickens. In conclusion, the supplementation of phytase and xylanase for nursery pigs and broiler chickens reaffirmed the benefits related to enhancement of nutrient digestibility and growth performance, whilst also playing functional roles benefiting the intestinal microbiota and reducing the intestinal oxidative damages. As a result, it could contribute to a reduction in the feed costs by allowing the use of a wider range of feedstuffs without compromising the optimal performance of the animals, as well as the environmental concerns associated with a poor hydrolysis of antinutritional factors present in the diets for swine and poultry.

Efficacy of a bacterial 6-phytase supplemented beyond traditional dose levels on jejunal mucosa-associated microbiota, ileal nutrient digestibility, bone parameters, and intestinal health, and growth performance of nursery pigs

“…Generally, 3-phytases (EC 3.1.3.8) are characterized by initiating the dephosphorylation at the third carbon atom of the inositol ring, whereas the 6-phytases (EC 3.1.3.26) can initiate at the sixth carbon atom, which may result in increased dephosphorylation of the inositol ring ( Cosgrove and Irving, 1980 ). Although 6-phytases may have higher efficacy dephosphorylating phytic acid and improving growth performance compared to 3-phytases ( Moita et al, 2022a ), there is no single phytase that can fully dephosphorylate it ( Adeola and Cowieson, 2011 ).…”

Effects of β-mannanase supplementation on intestinal health and growth of nursery pigs

“…Digesta viscosity is critical in nutrient absorption and overall intestinal health of nursery pigs ( Moita and Kim, 2022 ). High viscosity can impair nutrient absorption, negatively impacting growth performance and intestinal health ( Chen et al., 2020 ; Duarte and Kim, 2021 ; Moita et al., 2022 ).…”

Investigation of the nutritional and functional roles of a combinational use of xylanase and β-glucanase on intestinal health and growth of nursery pigs

“…A power test was conducted to determine the number of replications needed for this study. To determine the statistical significance of expected mean difference of 7% to 8% at P < 0.05, considering 5% coefficient of variation based on previous studies with pigs of similar genetic background and under similar research environment [ 13 , 47 ], and with a desired power of test (1 – beta) set at 95%, the power analysis indicated an 80% power. Based on this analysis, the minimum number of replications each treatment was determined to be 8 [ 48 ].…”