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| Suitable Feeding Frequency of Juvenile Chinese Giant Salamander |
| YANG Zhenjiang,XIAO Hanbing,TIAN Haifeng,MENG Yan,HU Qiaomu,WANG Fang |
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Abstract Chinese giant salamander (Andrias davidianus) juveniles (18 months old) were reared in 193 cm × 167 cm cement tanks at a rate of 80 individuals per tank and fed in various feeding regimes at water tem‐perature of 19 ± 1 ℃ to evaluate the suitable feeding frequency via grow th performance ,body composition and digestive enzyme activity in an intensive aquaculture .The results showed that there were elevated food intake and digestive enzyme activity in the fasted salamander .The maximal weight gain rate (WGR) and specific growth rate (SGR) and minimal food conversion ratio (FCR) were observed in the salamander fed and fasted alternatively in a 6 day interval ,significantly higher or lower than those in the other groups(P<0.05) .The salamander fed and fasted alternatively in a 2 day interval(S2F2) had high protein content and low fat content ,and there was lower survival rate in the salamander fed and fasted alternatively in a 6 or 8 day interval (S6F6 and S8F8) than that in other groups .When very high survival rate and body nutri‐ents were hoped ,the suitable feeding frequency was of feeding and fasting alternatively in a 2 day interval . If not ,suitable feeding frequency was of feeding and fasting alternatively in a 6 day interval ,which the ju‐venile salamander had relatively high survival rate ,grow th performance and body nutrients .
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Received: 25 October 2015
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