Enzyme

Xylanase

Endo-1,4-beta-Xylanase

Mechanism

Xylanasen spalten Arabinoxylane (Hemicellulose) der Getreide-Zellwaende, senken die Viskositaet des Darminhalts und schliessen Zellinhalte auf - in Gefluegel und Schwein ein etablierter Digestibility-Enhancer mit EFSA-Bewertung (z.B. Endofeed DC, EFSA Journal 2013;11(4):3322). Beim Pferd, einem Dickdarm-Fermentierer mit eigener faserabbauender Mikrobiota, ist der Zusatznutzen umstritten und uneinheitlich: Einzelne Versuche mit fibrolytischen Enzymen (Xylanase/Cellulase) berichten leichte Verbesserungen der Faserverdaulichkeit, andere keinen Effekt - Robinson et al. (2007, J Equine Vet Sci 27(12):535-538) fanden mit Cellulase keine bessere Verdaulichkeit einer rauhfutterreichen Ration. Die reichhaltige mikrobielle Enzymausstattung des Pferdes ueberlagert den Effekt exogener Enzyme weitgehend. Equine Evidenz begrenzt.

Cautions

· Equine Wirksamkeit uneinheitlich/unsicher
· Kein Ersatz fuer gutes Rauhfutter
· Zusatzstoff-Deklaration (VO 1831/2003) beachten

Sources

EFSA Journal 2013;11(4):3322EFSA FEEDAP 2013 - Safety and efficacy of Endofeed DC (endo-1,3(4)-beta-glucanase and endo-1,4-beta-xylanase) for poultry and pigs

DOI 10.1016/j.jevs.2007.10.014Robinson, Nielsen, Morris 2007 - Cellulase Supplementation Does Not Improve the Digestibility of a High-Forage Diet in Horses, J Equine Vet Sci 27(12):535-538

Equiterna Score

58/100

solid

Science4.5/10

Practical experience6/10

Safety7.2/10

Overall score scale

high overall75–100solid55–74limited0–54

How the Equiterna Score is built

The Equiterna Score combines three dimensions into a value of 0-100: science (40%), practical experience (30%) and safety (30%). It is transparently derived from evidence level, attributed sources (PubMed/journals), legal classification and cautions. The FEI doping status is shown separately as a competition-law note and does not enter the score. Commissions and vendor relationships have no influence on the score. In addition, the editorial safety rating caps the result: it limits the safety dimension and the overall tier (orange: at most solid). For entries rated red, no score is calculated at all. The rating never raises anything — a green rating does not lift a calculated value.

An editorial assessment of the evidence and safety situation — not a healing claim and not an individual recommendation. It does not replace veterinary advice.

DosageKeine etablierte Pferde-Dosis; in equinen Versuchen wurden fibrolytische Enzymprodukte in kleinen Mengen (Groessenordnung wenige mL/Tier/Tag) zugesetzt. Rauhfutterqualitaet und Mikrobiom sind die wirksameren Stellhebel.

AMG statusComplementary feed

FEI statusNot listed

SafetyVery safe

Evidenceemerging

Usage note

This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.

“Nothing forced can ever be beautiful.”

Xenophon · On Horsemanship (c. 365 BC)

Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.