| The growth of Tubificidae was investigated from juvenile to adult stage for 16 weeks by cultivating Tubificidae with activated sludge as substrate in batch tests at two different temperatures (20℃ and 25℃), monitoring changes of body length and wet weight of Tubificidae. Results showed that the growth of Tubificidae well fit the Logistic curve. Temperature of 25℃ was more suitable for worm growth than of 20℃, with the growth rates of wet weight and body length of 0.047?0 mg·(ind·d)-1 and 0.193?6 mm·(ind·d)-1, respectively, at 25℃. Meanwhile, the relationship between body length and wet weight of Tubificidae at 25℃ was determined as W=0.008 L2.028 (R2=0.868 5), which was well in accordance with the common regulation concluded in previous studies. Compared with other substrates, Tubificidae showed little difference on growth when fed with activated sludge. |
