Effects of 5 Types of Feed on the Growth and Nutrient Composi-tion of Juvenile Sea Cucumber Holothuria scabra
In order to explore the nutritional matching between different feeds,optimize the compound feed of tropical sea cucumber and improve the artificial breeding technology of Holothuria scabra,this study ana-lyzed the effects of five feeds on the growth and nutrient composition of juvenile H.scabra.In this experi-ment,shrimp feed,Spirulina powder,Sargassum powder,compound feed and fermented feed(fermented by compound feed,Sargassum powder,Clostridium butyrate,Rhodotorula benthica and Spirulina powder in a certain proportion)were used to feed juvenile sea cucumbers[body weight(1.06+0.20)g],respectively.The breeding cycle was 40 d.Finally,the body weight,specific growth rate(SGR)and body wall nutrient composition of juvenile sea cucumbers were determined.The results showed that at 40 d,the body weight and SGR of the juveniles in the compound feed group was the highest,followed by the fermented feed group,which were significantly higher than those in the other feed groups(P＜0.05).The crude protein content of body wall of the juveniles in shrimp feed group and compound feed group was significantly higher than that in Sargassum powder group and Spirulina powder group(P＜0.05).There was no significant difference a-mong the fermented feed group and the other groups(P＞0.05).The moisture content of juvenile sea cu-cumber in compound feed group,fermented feed group and shrimp feed group was significantly higher than that in Spirulina powder group,Sargassum powder group and the moisture content of juvenile sea cucumber at the beginning of the experiment(P＜0.05).The ash content of juvenile sea cucumber in the Sargassum powder group was significantly higher than that in the shrimp group,the compound feed group and the ash content of juvenile sea cucumber at the beginning of the experiment(P＜0.05).The energy value of juveniles in the shrimp feed group was significantly higher than that in the other groups(P＜0.05),and the energy value of juveniles in the Sargassum powder group and Spirulina powder group was significantly lower than that in the other groups(P＜0.05).There was no significant difference in the contents of Total Amino Acids(TAA),Essential Amino Acids(EAA),Semi-Essential Amino Acids(SEAA)and Flavor Amino Acids(FAA)among the compound feed group,the fermented feed group and the shrimp feed group(P＞0.05),which were significantly higher than those in the Sargassum group and the Spirulina group(P＜0.05).In summary,the growth effect of juvenile H.scabra fed with compound feed and fermented feed is the best,which can provide data support for the breeding management of juvenile H.scabra and its feed development.
万方数据
维普
