“…The black pepper powder was added at the rate of 0, 5, 7.5, and 10 g/kg in broiler diet and noted significant (p<0.05) difference in body weight (1855, 1990, 2025, and 2144 g/bird), body weight gain (1810, 1945, 1980, and 2099 g/bird), increased feed consumption (3620, 3793, 3841, and 4030 g/bird), and positive significant (p<0.05) effect on feed conversion ratio (2.00, 1.95, 1.94, and 1.92) at 42 days of age [ 9 ]. Some researchers were found no difference in feed intake in broiler fed with black pepper for a period of 5-week [ 10 , 11 ].…”