TRUE METABOLIZABLE ENERGY OF GLYCERIN IN ADULT ROOSTERS: PAVING THE WAY FOR SUSTAINABLE POULTRY NUTRITION IN SOUTHEAST ASIA
Keywords:
Glycerin, True Metabolizable Energy, Poultry Nutrition, Adult Roosters, Sustainable FeedAbstract
With rising global demand for sustainable feed alternatives, glycerin, a biodiesel byproduct, holds significant promise as an energy-rich ingredient. This study determined the true metabolizable energy (TME) and nutrient retention of glycerin in adult roosters, assessing its viability as an energy source for poultry diets, particularly in Southeast Asia. A rooster bioassay involving 12 Single Comb White Leghorn roosters, force-fed glycerin or fasted, was used to quantify metabolizable energy and digestibility coefficients. Glycerin, with a gross energy of 6,137 kcal/kg, exhibited high digestibility, particularly for ether extract (95.02%) and carbohydrates (91.37%). The calculated TME was 5,779.42 kcal/kg and TMEn 5,779.15 kcal/kg, indicating comparable energy levels to those of conventional poultry feed ingredients despite its low nitrogen content. These findings affirm glycerin’s potential as a highly digestible, resource-efficient alternative for sustainable feed formulation. Its strategic inclusion can enhance the resilience and cost-effectiveness of poultry production systems in the ASEAN region, contributing to waste valorization and food security. The study provides crucial data to optimize feed formulations and promote environmentally friendly practices.
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