Mannan-oligosaccharides (MOS)

Ingredient record found in evidence.pet/ product ingredient information. Source products linked; evidence review pending.

Ingredient Directory / Ingredient record

Ingredient record

Mannan-oligosaccharides (MOS)

“Mannan-oligosaccharides (MOS)” appears in the ingredient information of at least one indexed pet food. Preparation, inclusion amount and the rest of the formulation can differ between products.

Functional ingredientsNamed ingredientDog FishEvidence review pending

How to read this entry

We classify this term as named ingredient in the functional ingredients category. The linked products supply the observation; they do not by themselves establish the ingredient’s nutritional effect.

Check the declared form and amount, and whether any claim concerns this ingredient alone or a tested complete product.

Evidence status

This is an ingredient index entry linked to product information. We have not completed an ingredient-specific research appraisal for this entry. A term’s presence in a product does not demonstrate a health outcome, nutritional adequacy or the effect of that product.

Source and review

Product ingredient sections checked 24 September 2026. The linked product records show the wording and available source context. Manufacturer formulations and labels may change; verify the current pack and the intended market.

Research on this ingredient

Dog

FOS and MOS in dogs: digestion, microbes and immune markers

One study with 1 reviewed arm or dose connection(s).

Arm mos-supplement

FOS and MOS in dogs: digestion, microbes and immune markers

Direct · dog. Four adult female dogs with ileal cannulas; 14-day periods.

Tested form: MOS supplied at 1 g per feeding, twice daily. Dose: 1 g per feeding, twice daily (Oral feeding supplement). Duration: 14-day periods. Comparator: The same kibble without these supplements.

Measured finding: MOS changed some immune and microbial measures; several reported effects were only trends. Combined FOS/MOS increased ileal IgA versus control.

Limitations: Very small, surgically instrumented population; short periods and multiple surrogate outcomes. Related papers may share experiments.

Abstract reviewed · Checked 25 September 2026 · Evidence.pet study summary · Primary source

Products listing or mentioning this ingredient

91 products linked through reviewed ingredient occurrences from manufacturer declarations or partial editorial summaries. Whole-label verification may remain pending. An ingredient’s presence alone does not establish a nutritional outcome.

  • 80% Chicken and Salmon for Puppies 80% Chicken and Salmon for Puppies - 80% Chicken and Salmon for Puppies; United Kingdom; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • AATU Salmon Dry Puppy Food AATU Salmon Dry Puppy Food - Salmon Dry Puppy Food (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Adult Chicken & Rice Arden Grange Adult Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Adult Grain Free Fresh Chicken & Potato Dry Cat Food Arden Grange Adult Grain Free Fresh Chicken & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Adult Lamb & Rice Arden Grange Adult Lamb & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Adult Salmon & Rice Arden Grange Adult Salmon & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Kitten Grain Free Fresh Chicken & Potato Dry Cat Food Arden Grange Kitten Grain Free Fresh Chicken & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Large Breed Adult Chicken & Rice Arden Grange Large Breed Adult Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Large Breed Puppy/Junior Chicken & Rice Arden Grange Large Breed Puppy/Junior Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Light Adult Chicken & Rice Arden Grange Light Adult Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Senior Chicken & Rice Arden Grange Senior Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Sensitive Adult Ocean White Fish & Potato Arden Grange Sensitive Adult Ocean White Fish & Potato, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Sensitive Grain Free Ocean White Fish & Potato Dry Cat Food Arden Grange Sensitive Grain Free Ocean White Fish & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Sensitive Large Breed Adult Ocean White Fish & Potato Arden Grange Sensitive Large Breed Adult Ocean White Fish & Potato, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Arden Grange Sensitive Puppy/Junior Ocean White Fish & Potato Arden Grange Sensitive Puppy/Junior Ocean White Fish & Potato, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Angus Beef with Sweet Potato and Carrot Grain Free Working Dog 13.5kg Baileys Pet Foods Angus Beef with Sweet Potato and Carrot Grain Free Working Dog 13.5kg - Angus Beef with Sweet Potato and Carrot Grain Free Working Dog 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Chicken Sweet Potato and Herbs Grain Free 13.5kg Baileys Pet Foods Chicken Sweet Potato and Herbs Grain Free 13.5kg - Chicken Sweet Potato and Herbs Grain Free 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Duck, Sweet Potato and Orange Grain Free 13.5kg Baileys Pet Foods Duck, Sweet Potato and Orange Grain Free 13.5kg - Duck, Sweet Potato and Orange Grain Free 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Haddock, Sweet Potato and Parsley Grain Free 13.5kg Baileys Pet Foods Haddock, Sweet Potato and Parsley Grain Free 13.5kg - Haddock, Sweet Potato and Parsley Grain Free 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Lamb, Sweet Potato and Mint Grain Free 13.5kg Baileys Pet Foods Lamb, Sweet Potato and Mint Grain Free 13.5kg - Lamb, Sweet Potato and Mint Grain Free 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Puppy Chicken with Sweet Potato, Carrots and Peas Grain Free 13.5kg Baileys Pet Foods Puppy Chicken with Sweet Potato, Carrots and Peas Grain Free 13.5kg - Puppy Chicken with Sweet Potato, Carrots and Peas Grain Free 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Baileys Pet Foods Tuna, Salmon, Sweet Potato and Broccoli Grain Free 13.5kg Baileys Pet Foods Tuna, Salmon, Sweet Potato and Broccoli Grain Free 13.5kg - Tuna, Salmon, Sweet Potato and Broccoli Grain Free 13.5kg; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Butcher’s Tripe Mix Butcher’s Tripe Mix - Tripe Mix; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Butternut Box Daily Digest Butternut Box Daily Digest - Daily Digest (UK); UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Calm & Relaxed Complete Wet Dog Food Calm & Relaxed Complete Wet Dog Food - Calm & Relaxed Complete Wet Dog Food; United Kingdom; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Cobbydog Duck & Sweet Potato (Grain Free) Cobbydog Duck & Sweet Potato (Grain Free) - Duck & Sweet Potato (Grain Free); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Cobbydog Grain Free Salmon & Sweet Potato Cobbydog Grain Free Salmon & Sweet Potato - Grain Free Salmon & Sweet Potato; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Duck Confit Premium Dinner for Dogs Duck Confit Premium Dinner for Dogs - Duck Confit Premium Dinner for Dogs; United Kingdom; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Eden Country Cuisine Cat Wet Food Eden Country Cuisine Cat Wet Food - Eden Country Cuisine Cat Wet Food (UK); UK; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Eden Gourmet Duck & Herring Eden Gourmet Duck & Herring - Gourmet Duck & Herring (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Eden Original Cuisine Cat Wet Food Eden Original Cuisine Cat Wet Food - Eden Original Cuisine Cat Wet Food (UK); UK; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Eden Turkey & Herring Cuisine Cat Wet Food Eden Turkey & Herring Cuisine Cat Wet Food - Eden Turkey & Herring Cuisine Cat Wet Food (UK); UK; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Eden Wet Food for Sporting & Working Dogs: Country Cuisine Eden Wet Food for Sporting & Working Dogs: Country Cuisine - Eden Wet Food for Sporting & Working Dogs: Country Cuisine (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Eden Wet Food for Sporting & Working Dogs: Turkey and Herring Eden Wet Food for Sporting & Working Dogs: Turkey and Herring - Eden Wet Food for Sporting & Working Dogs: Turkey and Herring (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Essential Foods OUR FINEST BEGINNING SMALL BREED WORKING, 10KG Essential Foods OUR FINEST BEGINNING SMALL BREED WORKING, 10KG - OUR FINEST BEGINNING SMALL BREED WORKING, 10KG (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Essential Foods OUR FINEST BEGINNING SMALL BREED, 10KG Essential Foods OUR FINEST BEGINNING SMALL BREED, 10KG - OUR FINEST BEGINNING SMALL BREED, 10KG (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Essential Foods OUR FINEST HIGHLAND LIVING, 10KG Essential Foods OUR FINEST HIGHLAND LIVING, 10KG - OUR FINEST HIGHLAND LIVING, 10KG (UK); UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Adult Rich in Beef with Pumpkin EUKANUBA Adult Rich in Beef with Pumpkin - Adult Rich in Beef with Pumpkin; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Adult Rich in Lamb with Potatoes EUKANUBA Adult Rich in Lamb with Potatoes - Adult Rich in Lamb with Potatoes; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Adult Rich in Trout with Sweet Potatoes EUKANUBA Adult Rich in Trout with Sweet Potatoes - Adult Rich in Trout with Sweet Potatoes; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Adult Rich in Turkey with Carrots EUKANUBA Adult Rich in Turkey with Carrots - Adult Rich in Turkey with Carrots; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Puppy Rich in Beef with Pumpkin EUKANUBA Puppy Rich in Beef with Pumpkin - Puppy Rich in Beef with Pumpkin; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Puppy Rich in Lamb with Potatoes EUKANUBA Puppy Rich in Lamb with Potatoes - Puppy Rich in Lamb with Potatoes; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • EUKANUBA Puppy Rich in Turkey with Carrots EUKANUBA Puppy Rich in Turkey with Carrots - Puppy Rich in Turkey with Carrots; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Forthglade Cold Pressed Chicken Dry Dog Food Forthglade Cold Pressed Chicken Dry Dog Food, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Forthglade Cold Pressed Duck Dry Dog Food Forthglade Cold Pressed Duck Dry Dog Food, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Forthglade Cold Pressed Salmon Dry Dog Food Forthglade Cold Pressed Salmon Dry Dog Food, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Forthglade Cold Pressed Turkey Dry Dog Food Forthglade Cold Pressed Turkey Dry Dog Food, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Gelert Pet Nutrition Maintenance Lamb & Rice Gelert Pet Nutrition Maintenance Lamb & Rice - Maintenance Lamb & Rice; UK; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
  • Health & Digestion Complete Wet Dog Food Health & Digestion Complete Wet Dog Food - Health & Digestion Complete Wet Dog Food; United Kingdom; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
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