Collection, processing and preparation of the experimental diet
Dried turmeric (Curcuma longa) rhizomes were purchased from local spices
market of Dinajpur (Bangladesh). The samples were further ground into powder by
machine at Bahadurbazar, Dinajpur, Bangladesh. The obtained powder was packed in
a polythelene bag and preserved in the feed storage room until used for feed
formulation. Loose feed was used throughout the experimental study. The
experimental period was divided into two phases (broiler-starter and broiler-finisher).