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. 2022 Nov 28;12(23):3322. doi: 10.3390/ani12233322

Table 3.

A list of studies describing effects of xylanase supplemented individually at different levels in diets for broiler chickens.

Duration, Day of Age Activity % Change * Reference **
1–42 ND 1 Final body weight (2%), ADFI 2 (−2%), tissue protein content (14%), gizzard weight (−8%), duodenum-jejunum weight (−8%), ileal digesta viscosity (ND), ileum lactic acid bacteria (4%) [217]
1–25 0–200 FXU/kg feed ADG 3 (12%), FCR 4 (−9%), excreta moisture (−5%), jejunum arabinose (80%), jejunum xylose (95%), ileum arabinose (88%), ileum xylose (97%), duodenum digesta viscosity (−33%), jejunum digesta viscosity (−49%) [218]
1–22 0–1000 XU/kg feed ADG (14%), ADFI (10%), FCR (−5%), duodenum digesta viscosity (−29%), jejunum digesta viscosity (−23%), ileum digesta viscosity (−39%), jejunum weight (−16%), jejunum length (−16%), jejunum crypt depth (−13%) [113]
1–41 0–2000 U/kg feed ADG (10%), FCR (−6%), in-vitro intrinsic viscosity (−38%) [219]
1–28 0–500 U/kg feed Jejunum digesta viscosity (−85%) [220]
1–18 ND ADG (10%), ADFI (16%), ileum length (−30%), jejunum crypt depth (−19%) [221]
1–21 0–1000 XU/kg feed FCR (−2%), AME 5 (3%) [222]
7–28 0–500 U/kg feed G:F 6 (8–16%), jejunum digesta viscosity (−18%), DM 7 digestibility (27–37%) [223]
1–28 0–2500 GXU/kg feed ADFI (9%), jejunum digesta viscosity (−11%), cecum arabinose concentration (59%) [224]
1–43 0–16,000 U/kg feed FCR (−3%), N 8 digestibility (3%), ileal digestible energy digestibility (3%), threonine digestibility (5%), lysine digestibility (3%) [225]
1–24 0–200 FXU/kg feed ADG (3%), G:F (4%), jejunum digesta viscosity (−21%), DM retention (10%), CP 9 retention (13%), energy retention (9%) [226]
1–42 0–2000 U/kg feed ADG (15%), FCR (−11%), cecum Salmonella prevalence (−62%) [227]
1–35 ND Feed conversion ratio (−3%), starch digestibility (4%), fat digestibility (3%), AME retention (4%) [228]
1–43 0–16,000 BXU/kg feed FCR (−3%) [229]
1–43 0–16,000 XU/kg feed Serum insulin (%), serum peptide YY (61%), cecal VFA 10 (−4%) [230]
1–35 0–250 FXU/kg feed Ileum viscosity (−20%), ileum xylose concentration (−14%), jejunum protein content (28%) [231]
1–32 0–32,000 BXU/kg feed No effects on the evaluated parameters [232]
1–50 0–16,000 BXU/kg feed FCR (−7%), DM digestibility (9%), ileal digestible energy (7%), N digestibility (4%), cecum temperature (4%) [233]
1–43 0–1250 XU/kg feed ADG (7%), FCR (−5%), jejunum viscosity (−49%), cecum acetic acid concentration (35%), fat digestibility (5%), CP digestibility (4%), DM retention 3%), fat retention (6%), P 11 retention (6%), NDF 12 retention (14%), ADF 13 retention (42%), AME (2%) [234]
1–21 0–5500 U/kg feed FCR (−7%) [235]
1–49 0–32,000 BXU/kg feed FCR (−6%), energy digestibility (6%), gizzard weight (16%), cecum propionic acid concentration (22%), cecum caproic acid concentration (24%) [236]
7–21 0–2000 U/kg feed AME (1%), DM retention (2%), fat digestibility (2%) [237]
1–42 0–160,000 BXU/kg feed Gizzard weight (17%), gizzard length (19%) [238]
1–42 0–2000 XU/kg feed FCR (−2%), ileal digestible energy (8%), starch digestibility (1%), N digestibility (5%), GE digestibility (8%), ileum total NSP 14 concentration (−26%) [239]
1–36 0–5625 XU/kg feed ADG (2%), GE 15 digestibility (3%), CP digestibility (4%), DM digestibility (1%), RA 16 of ileal Lactobacillus (12%), cecal Lactobacillus (11%), ileal Escherichia coli (−15%), and cecal Escherichia coli (−11%), duodenum villus height (8%), jejunum villus height (10%), ileum villus height (12%) [240]
1–42 0–16,000 BXU/kg feed FCR (−4%) [241]
1–41 0–24,000 BXU/kg feed Mortality (−54%) [242]
1–42 0–16,000 BXU/kg feed FCR (−3%), duodenum acetic acid concentration (12%) [243]
1–42 0–200 FXU/kg feed FCR (−1%), jejunum digesta viscosity (−40%), ileum digesta viscosity (−58%) [244]
1–29 0–160,000 BXU/kg feed FCR (−8%), copper digestibility (44%) [245]
1–30 0–32,000 BXU/kg feed Ileal frutose (31%), ileal arabinose (29%), ileal galactose (33%) [215]
1–33 0–11,250 XU/kg feed ADG (3%), FCR (−4%), DM digestibility (4%), GE digestibility (4%), ileum digesta viscosity (−12%), duodenum villus height (8%), jejunum villus height (9%) [246]
1–43 0–16,000 BXU/kg feed ADG (5%), final body weight (6%), acetate (27%), total SCFA 17 (24%) [214]

* The described effects were in comparison with treatments without xylanase. Described effects were considered significant with p < 0.05 and tendency with 0.05 ≤ p < 0.10. ** The references were selected from peer-reviewed literature available after 2000. 1 No data. 2 Average daily feed intake. 3 Average daily gain. 4 Feed conversion ratio. 5 Apparent metabolizable energy. 6 Gain to feed ratio. 7 Dry matter. 8 Nitrogen. 9 Crude protein. 10 Volatile fatty acids. 11 Phosphorus. 12 Neutral detergent fiber. 13 Acid detergent fiber. 14 Non-starch polysaccharides. 15 Gross energy. 16 Relative abundance. 17 Short chain fatty acids.