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| Effects of Several Terrestrial Plants on Growth of Juvenile Sea Cucumber Apostichopus j aponicus |
| LIU Tianhong,WU Zhihong,SUN Yuanqin,LI Xiao,LI Hongyan,WANG Liyuan,WANG Ying |
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Abstract A feeding trial was carried out to evaluate the effects of dietary on growth of juvenile sea cucum‐ber A postichopus j aponicus .Juvenile sea cucumber weighing 2 .5 g to 3 .5 g was stocked into 70 L plastic tanks for 60 days and fed sea weeds Sargassum thunbergii ,Sargassum pallidum ,Enteromorpha prolif‐ra ,Purslane herb ,Sargassum f usiforme(Harv .) setch ,Ulva lactucal ,Thallus laminariae ,and a com‐mercial feed . The best artificial ingredients of these plants were defined by the body length , specific growth ratios (SGR) ,weight growth(WG) ,apparent protein digestibility (ADC) and food conversation ratio (FCR) after feeding sea cucumber .The results showed that the order of body length of juvenile sea cucumber was expressed as :S .thunbergii > kelp > 200 mesh E .prolif ra> S .pallidum > P .herb >U .lactuca > 400 mesh E .prolifra (without mud ) > S . fusiforme(Harv .) Setch .> 400 mesh E . prolifra,difference of some groups were very significant (P< 0 .01).The better growth‐promoting effects of these plants to sea cucumber were S .thunbergii ,U .lactucaand E .prolif ra ,according to these different promoting indicators like SGR ,WG ,ADC and FCR .These values were significant (P <0 .05) . S .thunbergii had the best apparent protein digestibility ,the worst S .fusiforme(Harv .) Setch .There‐fore ,S .thunbergii ,S .pallidum ,E .prolifra,and U .lactucawere more beneficial to the growth of sea cucumber ,w hich can be used for the preparation of artificial juvenile sea cucumber feed .
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Received: 25 April 2015
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