Protected Fatty Acids in Pig Nutrition

Practical Guide for Farmers, Nutritionists and Vets

(Based on Jackman et al., 2020 and supporting literature)

Our C4A product presents the protected fatty acids as a liquid for dilution in the drinking water at 600ml per 1000 litres. In C4A, the method used to protect the fatty acids is unique in that it uses glycerol to combine with four fatty acids to make fat molecules, which are the emulsified to creat a water-mixable liquid for easy and quick use.

1. What Protected Fatty Acids Are

Protected fatty acids (usually medium‑chain fatty acids — C6, C8, C10, C12 — and their monoglycerides) are natural lipid molecules delivered in a coated or encapsulated form ( the C4A product we supply protects the fatty acids by combining with glycerol, to make a fat) so they:

survive the stomach
avoid early absorption
reach the small intestine
act directly on pathogens and gut tissue

They are not antibiotics, but they have strong antimicrobial and immune‑modulating effects.

2. Why They Matter in Pig Production

Modern pig systems face four major pressures:

Reduced access to antibiotics
Weaning stress and gut instability
Enteric pathogens (E. coli, Clostridium, Salmonella)
Feed‑borne viral risks (PEDv, PRRSv, ASFv)

Protected fatty acids directly target these issues.

3. What Protected Fatty Acids Do in Pigs

A. Improve Growth & Feed Efficiency

Across multiple trials:

Better ADG
Improved FCR
Lower mortality
Better nutrient digestibility (protein, fibre)
More stable feed intake during weaning

Effects are strongest in the first 4–6 weeks post‑weaning.

B. Strengthen Gut Health

Protected fatty acids:

Increase villus height
Improve tight‑junction integrity
Reduce gut inflammation
Support beneficial bacteria (Lactobacillus)
Reduce harmful bacteria (E. coli, Clostridium perfringens)

This stabilises the gut during the critical weaning transition.

C. Reduce Pathogen Load

Antibacterial activity
MCFAs and monoglycerides inhibit:

E. coli
Streptococcus suis
Clostridium perfringens
Salmonella spp.
Listeria monocytogenes

Monoglycerides (especially monolaurin) are often more potent than the free fatty acids.

Antiviral activity
They disrupt the lipid envelope of viruses such as:

PEDv
PRRSv
ASFv
Influenza viruses

This is why they are now used in feed pathogen mitigation programmes.

D. Reduce Antibiotic Use

Field studies show:

Lower need for post‑weaning antibiotic treatments
Reduced daily doses per animal year
Comparable performance to in‑feed antibiotics in challenge models

They are not a replacement for therapeutic antibiotics, but they reduce reliance.

4. Protected Fatty Acids in Feed Pathogen Mitigation

This is one of the most important findings in the paper you have open.

Key evidence:

A 2% MCFA blend (C6:C8:C10) prevented PEDv infection from contaminated feed.
Performance was equal to formaldehyde‑based mitigants.
MCFAs remained stable and active for 40 days in stored feed.
They reduced Salmonella by >99% in rendered protein meals.

This makes protected fatty acids a dual‑purpose tool:
gut health + feed hygiene.

5. Why Encapsulation Matters

Unprotected MCFAs are absorbed too early.
Encapsulation:

masks odour
improves palatability
slows release
increases delivery to the small intestine
enhances antimicrobial contact time
protects the actives during pelleting

Different coatings (fat, lecithin, starch, alginate, calcium soaps) change where and how they release.

The C4A product we supply protects the fatty acids by combining with glycerol, to make a fat molecule. This is available as a liquid emulsion that easily mixes with drinking later at 0.6%, or 600ml per 1000 litres of water.

6. Where They Fit in a Pig System

Weaners

The strongest evidence base.
Benefits include:

reduced diarrhoea
improved gut morphology
better growth
lower mortality

Growers/Finishers

improved ADG
improved immune markers (IgG, lymphocytes)
reduced inflammatory cytokines
stable performance under challenge

Sows

improved microbiota
reduced pathogen shedding
improved piglet immunity
lower antibiotic use on farrow‑to‑finish farms

)

7. Practical Takeaways for Farmers

Protected fatty acids are one of the best‑supported non‑antibiotic tools for weaning pigs.
They improve gut health, performance, and resilience.
They reduce pathogen load in both pigs and feed.
They complement — not replace — acids, probiotics, zinc alternatives, and vaccination.
Encapsulation is essential for consistency and efficacy.

References cited - These are the key studies that support the statements about protected fatty acids (MCFAs and monoglycerides) in pigs:

Growth performance & gut health

Cera et al. (1989) — early MCFA work showing improved FCR and nutrient utilisation.
Marounek et al. (2002) — 0.5% caprylic acid improved growth in Cryptosporidium-challenged pigs.
Hanczakowska et al. (2011, 2013) — MCFA blends improved ADG, FCR, digestibility, and reduced Clostridium.
Gebhardt et al. (2020) — dose‑dependent improvements in ADG, ADFI, and FCR with MCFA blends.
Cochrane et al. (2018) — MCFA blends performed similarly to chlortetracycline in E. coli challenge models.
Zhang et al. (2019) — finishing pigs showed improved ADG and immune markers with MCFA supplementation.

Antimicrobial & antiviral activity

Kabara et al. (1970s) — foundational structure–function work on MCFA antimicrobial activity.
Schlievert et al. — monolaurin (GML) disrupting Gram‑positive bacteria.
Thormar et al. — fatty acids disrupting enveloped viruses.
Ren et al. — MCFA mixtures reducing inflammatory responses in E. coli‑challenged pigs.
López‑Colom et al. (2020) — lauric‑rich MCFA salts reducing Salmonella and coliforms in piglets.

Feed pathogen mitigation

Dee et al. (2018) — 2% MCFA blend prevented PEDv infection from contaminated feed; equal to formaldehyde.
Cochrane et al. (2019, 2020) — MCFA blends reduced Salmonella by >99% in rendered meals; individual MCFAs tested.
Gebhardt et al. (2020) — MCFA blends remained active for 40 days in stored feed.

Encapsulation & delivery

Boyen et al. — coated caprylic acid reduced Salmonella shedding; uncoated did not.
Han et al. — microencapsulated eucalyptus‑MCFA blend improved growth and digestibility.
Omonijo et al. — alginate/starch microparticles for MCFA delivery.
Giorgi et al. — laurate calcium soap improved FCR and reduced mortality.