L actulose is a semi-synthetic disaccharide, chemically known as 4-O-β-D- galactopyranosyl-D-fructofuranose derived from lactose. As a prebiotic, lactulose is indigestible by human enzymes but is fermented by beneficial colonic bacteria, particularly Bifidobacteria and Lactobacilli, which are crucial for gut health. Upon ingestion, lactulose reaches the colon intact, bypassing digestion in the upper gastrointestinal tract. There, colonic bacteria metabolise it into monomers, resulting in the production of short-chain fatty acids (SCFAs), hydrogen, and methane. This metabolic process contributes to several beneficial effects which include: • Selective stimulation of beneficial bacteria: Lactulose selectively enhances the growth and activity of beneficial bacteria, particularly Bifidobacteria and Lactobacilli, in the colon. • Reduction of ammonia production: By lowering intestinal pH and inhibiting urease-producing bacteria, lactulose reduces ammonia production in the intestine. • Improved gut health: Lactulose promotes a healthy gut microbiota composition, which is essential for proper digestion, nutrient absorption, and immune function. Due to its prebiotic properties, lactulose is used in various food applications, including POULTRY In this article, discover lactulose's dual role as a prebiotic and its transformative impact on laying hen productivity, offering a sustainable alternative in poultry farming. A recent study evaluated the use of lactulose as a prebiotic in laying hens. May/June 2024 | www.africanfarming.net 9 Image Credit: Adobe Stock Lactulose: Productivity enhancer extraordinaire