Comparative study of the growth of Mauremys mutica,Cuora trifasciata and Chlydre serpentina

The growth of Mauremys mutica , Cuora trifasciata and Chlydre serpentina in one year is studied and compared. Under the condition of natural temperature and artificial feeding in Guangzhou , when Mauremys mutica was reared for 343 days , its average weight increased from 10. 3g to 71. 9g and its growth rate was 4. 37mg·g-1 ·d-1, Cuora trif asciata for 343 days , from 15. 9g to 67. 8g , its growth rate 3. 68mg ·g-1 ·d-1; Chlydre serpentina for 362 days , from 10. 8g to 263. 1g , its growth rate 5. 09 mg·g-1·d -1. Namely , the growth rate , Chlydre serpentina’s > Mauremys mutica’s > Cuora trif asciata’s was found. The relationship among mass , carapace length , carapace width and day old are very significant . The growth rate of turtles decreased in low temperature and the result was Mauremys mutica’s > Cuora trif asciata’s > Chlydre serpentina’s. Under the condition of same feeding, the individual growth rate was different. That was Chlydre serpentina ’s > Mauremys mutica’s > Cuora trif asciata ’s. The effects of feed translating were Chlydre serpentina ’s > Mauremys mutica’s > Cuora trifasciata ’s. The quantity of ration was Cuora trif asciata ’s > Mauremys mutica’s > Chlydre serpentina’s.