Corn Starch as a Dietary Seaweed Powder Replacer in Juvenile Abalone, Haliotis discus hannai.

Ferreira, Fernando M.; Deysolong, Larry B.; Park, Gunhyun; Yun, Hyeonho; Jang, Inkwon; Kim, Kangwoong; Bai, Sungchul C.

This study was conducted to investigate the use of corn starch ( CS) as a replacer of seaweed powder ( SWP) in the diets of juvenile abalone, Haliotis discus hannai. Six experimental diets were formulated with CS to replace SWP at 0, 20, 40, 60, 80, and 100% (Con, CS20, CS40, CS60, CS80, and CS100, respectively). Abalones averaging 0.44 ± 0.01 g (mean ± SD) were distributed into 18 tanks, and fed one of the six experimental diets in triplicate for 10 wk. After the feeding trial, abalone fed CS100 had a lower weight gain ( WG) and specific growth rate than abalone fed the other diets; however, there was no significant difference among abalone fed Con, CS20, CS40, CS60, and CS80. Abalone fed Con, CS20, and CS40 had a higher feed efficiency and protein efficiency ratio than abalone fed CS100 diet, although there were no significant differences among abalone fed Con, CS20, CS40, CS60, and CS80. Abalone fed CS100 had a lower whole-body crude lipid content than did abalone fed Con. Broken-line analysis for WG indicated that dietary SWP was successfully replaced by CS up to 74.8%. Based on growth performance, CS could replace more than 74.8% but less than 80% of SWP in juvenile abalone diets.

ABALONES; MARINE algae as food; CORN as feed; CORNSTARCH; DIETARY supplements

Journal of the World Aquaculture Society, 2015, Vol 46, Issue 1, p69

0893-8849

Academic Journal

10.1111/jwas.12172