Reducing Feed Costs and Improving Environmental Outcomes through Optimisation of Apparent and True Metabolisable Energy in Poultry Nutrition

Abstract In this case study, the benefits of optimising apparent metabolisable energy (AME) and true metabolisable energy (TME) in poultry nutrition are examined from an economic and environmental perspective. The increasing number of poultry produced worldwide has raised major concerns about its effects on the environment, particularly from greenhouse gas emissions and nutrient runoff from manure. Conventional feed formulation practices usually overlook age-related differences in nutrient utilisation, which leads to inefficient nutrient utilisation and greater excretion of nutrients under specific management situations. This study evaluates the use of age-specific feed formulations and assesses the impact of poultry age on AME and TME values. By adjusting the feed composition to the changing digestive capabilities of poultry birds, farmers are able to enhance the feed conversion ratio, reduce the amount of wasted nutrients and reduce their environmental footprint. The case study discusses economic trade-offs and evidence-based strategies, and recommends practical implementation procedures, such as training, research partnership, and the application of rapid analytical techniques. Information © The Authors 2026