Vol. 9, Issue 10, Part A (2025)

An experiment was conducted using 180 day-old Cobb broiler chicks to study the effect of modified lignin on growth performance. The chicks were randomly divided into six treatment groups with three replicates of ten birds each for 42 days. Treatment groups included a control diet (T₁) as per BIS (2007) ^[4], a reformulated diet with 2% reduction in metabolizable energy and crude protein of control diet (T₂), and experimental diets T₃ and T₄ supplemented with 0.2% modified lignin in both control and reformulated diets, respectively and similarly, the treatments T₅ and T₆ supplemented with 0.3% modified lignin in both control and reformulated diets, respectively. The results showed that birds supplemented with 0.2 and 0.3% modified lignin in both control and reformulated diets showed significantly improved body weight, feed intake and better feed conversion ratio compared to both the control and reformulated diets fed groups and no significant difference was noticed in survivability among all the groups. It was concluded that supplementing modified lignin improved growth performance in broilers.