Caecal bacterial composition of broiler chickens affected by porang glucomannan

Glucomannan is consisted of D-glucose and D-mannose with β-1.4 linkages. Poultry had no enzyme to digest β linkage so that porang (Amorphophallus onchophyllus) glucomannan could be a prebiotic candidate. The study purposed determine the effect on caecum bacterial composition (similarity, diversity, grouping bacteria) using Terminal Restriction Fragment Length Polymorphisms method performance (body weight gain, feed intake, conversion ratio) broiler chickens. One hundred eighty unsexed day old chicks (DOC) were divided into 6 treat-ments 3 replicates (10 birds each) completely randomized design (CRD). treatments P0 (basal feed), P1 + 0.05% glucomannan), P2 0.1% glu-comannan), P3 0.15% KJ commercial konjac KM (commercial feed). results showed caecal treatment similarity basal feed. Diversity index species number was higher than glucomannan. Gluco-mannan prebiotics Lactobacillus while lowest Clostridium obtained in treatment. inclusion gave negative per-formance broilers.