Growth Characteristics of Juvenile Abalone, Haliotis discus hannai by Reared Methods in order to High Density Intermediate Culture in Land-based Tank
Si-Woo Lee, Byeong-Hak Kim, Min-Woo Park, Tae-Ik Kim and Maeng-Hyun Son
Southwest Sea Fisheries Research Institute, NFRDI, Yeosu 556-823, Korea

The effect of different intermediated rearing method by expanding the attached floor space in order to highly density culture on the growth characteristics and survival rate of the juvenile abalone, Haliotis discus hannai, were investigated in land-based tanks. The intermediated culture methods was determined thru the shelter counts and layer for 10 month with two replicates : the single layer shelter (SLS), the double layer shelter (DLS), the triple layer shelter (TLS) and the single layer shelter under net cage (SLSNC). In addition, the culture on shallow race way tank had to set up as culture of the ditch raceway tank (CDRT) and the floor race way tank (CFRT). In the growth performance of reared abalone (initial mean shell length 54.18 ± 7.39 mm and weight 1.93 ± 0.14 g) at experimental tanks, that the absolute growth rate (ARG), daily growth rate (DGR) and specific growth rate (SGR) to the shell length and shell breadth was not significant at each experimental tanks except SLSNC. As well as too, weight gain (WG), daily weight gain (DWG) and specific weight gain (SWG) to weight was not significant at each experimental tanks except SLSNC, too. Survival rates of CDRT and CFRT was lower than those of different experimental tanks (P < 0.05). Therefore, these results is showed that high density different intermediated rearing method by expanding the attached floor space for juvenile H. discus hannai was not have difference as growth performance and survival rate both one layer shelter and multi layer shelter. Also, it is considered that shallow race way tank was not useful rearing for the juvenile intermediate culture of H. discus hannai in land based.

  
v31_2_83-92.pdf (991.8K), Down : 95, 2015-07-16 11:46:29

   

사무국 : 충남 아산시 신창면 순천향로 22 자연과학대학 3317호 / Tel: 041-530-3040 / E-mail : malacol@naver.com

편집국 : 강원도 춘천시 강원대학길 1 환경연구소 / Tel: 033-250-7409 / E-mail : sljun@kangwon.ac.kr