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EFFECT OF DIFFERENT CARBOHYDRATE SOURCES IN THE DIETS ON PERFORMANCE OF JUVEINILE ABALONE (Haliotis discus)  

Ki Wook Lee*, Hee Sung Kim, Dong Gyu Choi, and Sung Hwoan ChoDivision of Marine BioScience, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 606-791, Korea
E-mail: lkdoubleu@naver.com

A 16-week feeding trial was conducted to determine effect of different dietary carbohydrate sources in the diets on performance of juvenile abalone (Haliotis discus). One thousand six hundred and eighty juvenile abalone was distributed into 24, 70 L plastic rectangular containers. Seven experimental diets containing the different sources of carbohydrate sources (dextrin, glucose, starch, cellulose, maltose, sucrose and wheat flour) were prepared in triplicate. In addition, Undaria was prepared to compare effect of the experimental diets on performance of abalone.

Survival of abalone was not significantly different the experimental diets (Table 1). However, weight gain and specific growth rate (SGR) of abalone fed the diet containing cellulose were higher than those of abalone fed the all other diets. Weight gain and SGR of abalone fed the experimental diets containing the different sources of carbohydrate was higher than those of abalone fed the Undaria. Shell length, shell width and soft body weight of abalone fed the diet containing cellulose were higher than those of abalone fed the all other diets. Crude protein content of the soft body of abalone fed the diet containing maltose was higher than those of abalone fed the all other diets. The lowest crude protein content was obtained in abalone fed the Undaria. Crude lipid content of the soft body of abalone fed the experimental diets containing the different sources of carbohydrate was higher than that of abalone fed the Undaria. In conclusion, dietary inclusion of cellulose was effective to produce the best weight gain of abalone. The all experimental diets containing the various sources of carbohydrate produced the better weight gain of abalone than Undaria.




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