Humic Substance Applications in Poultry Nutrition

Summary

Humic substances are heterogeneous assemblies of organic molecules derived from the decomposition of lignin and other plant and microbial residues. They have been incorporated into poultry diets as multifunctional feed additives that can improve nutrient utilisation, modulate gut pH and support microbial balance in the gastrointestinal tract. Their metal-chelating and adsorptive capacities enhance mineral bioavailability and toxin binding, while antioxidant and anti-inflammatory properties contribute to mucosal integrity. The replacement of antibiotic growth promoters with humic fractions addresses consumer concerns over antimicrobial resistance and reduces environmental burdens associated with nitrogen excretion. Beyond improvements in weight gain and feed efficiency, supplementation has been linked to reductions in pathogen load, enhancement of immune markers and improvements in meat quality attributes such as oxidative stability and fatty acid composition. As sustainable intensification gains momentum, humic substances offer a globally relevant strategy to bolster poultry health, production performance and product safety.

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Humic Substance Applications in Poultry Nutrition publication trend

The graph below shows the total number of articles in humic substance applications in poultry nutrition across all publications each year (not limited to Nature Index journals).

Technical terms

Humic substances: Organically derived macromolecular complexes produced during microbial decomposition of plant and animal matter, added to poultry feed to enhance nutrient utilisation and gut health.

Fulvic acid: The low molecular weight, water-soluble fraction of humic substances rich in functional groups, noted for its capacity to modulate gut microbiota and immune responses.

Coccidiostat: A compound employed in poultry production to prevent or control coccidiosis by inhibiting intestinal protozoal parasites.

Feed conversion ratio: A performance metric representing the mass of feed consumed divided by bodyweight gain, used to evaluate growth efficiency in poultry.

References

  1. The Effect of the Supplementation of Humic Substances and Fermented Products in the Feed on the Content of Salinomycin Residues in Poultry Tissues. Foods (2023).
  2. Effects of fulvic acid on growth performance, serum index, gut microbiota, and metabolites of Xianju yellow chicken. Frontiers in Nutrition (2022).
  3. Humic Substances as a Feed Supplement and the Benefits of Produced Chicken Meat. Life (2023).

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