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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 25, No. 1, 2004, pp. 43-47
Bioline Code: zr04008
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 25, No. 1, 2004, pp. 43-47

 en Effect of Ration Level on Growth in Juvenile Soft-shelled Turtles, Trionyx sinensis check for this species in other resources
LEI Si-jia YE Shi-zhou

Abstract

The growth trial of a 56-day period was conducted at 30 ° to investigate the effect of ration on growth and feed conversion efficiency in juveniles Trionyx sinensis check for this species in other resources ,which initial body weights ranged from 28.66 to 53.37 g.They were fed commercial soft-shelled turtle diet twice a day at five ration levels (starvation,1%,2%,4% and satiation).ANOVA showed that specific growth rate (SGR) and conversion efficiency (K) were significantly affected by the ration level.SGR increased quadratically with increasing ration,and the relationship between SGR for dry matter (SGRd) and ration level (RL) could be expressed as the follow:SGRd=-0.0832RL2+1.0795RL-1.8779(n=25,r2=0.906,F=105.46).The maximum SGR for wet matter,dry matter,protein and energy appeared when ration levels were 6.97%,6.49%,6.08% and 6.34%,respectively.All Ks at 1% ration group were significantly lower than those at 2% and 4%,and Ks for dry matter and energy were lower than the satiation;Ks for dry matter and energy at 2% were significantly higher than those at the satiation.

Keywords
Juvenile Trionyx sinensis; Ration level; Growth; Conversion efficiency

 
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