title: Effect of xylanase on apparent ileal and total tract digestibility of nutrients and energy of rye in young pigs.
abstract: A digestibility experiment was carried out on weanling piglets to study the effect of an enzyme complex with predominant xylanase activity on apparent ileal (AID) and apparent total tract digestibility of nutrients and energy. The enzyme was supplemented at four levels (0, 50, 100 and 200 mg/kg) to a diet containing 96% rye. There were significant effects of the added enzyme on AID of dry matter, organic matter and crude fibre, and on apparent total tract digestibility of dry matter, organic matter and energy. However, the improvements in the digestibility were rather small. Except for galactose, there was a significant response in AID of all non-starch polysaccharide constituents to enzyme supplementation, the greatest effect being found at 100 mg/kg. The improvement in AID of arabinose + xylose (685%) was much higher than that of the remaining sugars (110%). AID of galactose was negative in all dietary treatments, presumably due to its high concentration in endogenous secretions. There was a significant response in AID of the sum of essential and total amino acids to the increased level of the enzyme. It is concluded that the enzyme complex is efficient in degrading dietary fibre components, thus improving the digestibility of organic matter, amino acids and energy.
authors.affiliation: a Research Institute of Animal Production, Slovak Agricultural Research Centre , Nitra , Slovakia.
authors.forename: Soňa
authors.initials: S
authors.lastname: Nitrayová
authors.affiliation: a Research Institute of Animal Production, Slovak Agricultural Research Centre , Nitra , Slovakia.
authors.forename: Jaroslav
authors.initials: J
authors.lastname: Heger
authors.affiliation: a Research Institute of Animal Production, Slovak Agricultural Research Centre , Nitra , Slovakia.
authors.forename: Peter
authors.initials: P
authors.lastname: Patráš
authors.affiliation: b Institut für Agrar- und Ernährungswissenschaften, Martin-Luther-Universität Halle-Wittenberg , Germany.
authors.forename: Holger
authors.initials: H
authors.lastname: Kluge
authors.affiliation: c DSM Nutritional Products, Animal Nutrition and Health R&D , Basel , Switzerland.
authors.forename: Jiří
authors.initials: J
authors.lastname: Brož
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena / Q000187:drug effects; D000818:Animals; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements / Q000032:analysis; D004305:Dose-Response Relationship, Drug; D043364:Endo-1,4-beta Xylanases / Q000008:administration & dosage / Q000494:pharmacology*; D004734:Energy Metabolism; D005260:Female; D041981:Gastrointestinal Tract / Q000187:drug effects / Q000502:physiology*; D007082:Ileum / Q000187:drug effects / Q000502:physiology; D012434:Secale / Q000737:chemistry; D034421:Sus scrofa / Q000502:physiology*
chemical_list: D043364:Endo-1,4-beta Xylanases
keywords: digestibility; non-starch polysaccharides; piglets; rye; xylanase