Four experimental diets were formulated to contain 0, 0.05%, 0.10% and 0.15% composite plant extract, which were mainly extracted from coarse old tea, sweet orange, orange peel, purslane, wild chrysanthemum flower, buckwheat. Triplicate groups each with 20 Trionyx sinensis （initial body weight, 42.47±1.00 g） were fed one of the experimental diets for 30 d. The results showed that, compared with the control group, growth rate and specific growth rate significantly increased in 0.05% addition group （P〈0.05）, and significantly reduced in 0.1...
