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Quality Evaluation of Domestic and Foreign Extruded Pellets and Moist Pellet Based on Biochemical Analyses for Juvenile Olive Flounder, Parazichthys Olivaceus  

최세민 (부경대학교 양식학과/사료영양연구소)
한경민 (부경대학교 양식학과/사료영양연구)
왕소길 (부경대학교 양식학과/사료영양연구)
이승형 (부경대학교 양식학과/사료영양연구)
배승철 (부경대학교 양식학과/사료영양연구소)
Publication Information
Journal of Aquaculture / v.17, no.2, 2004 , pp. 144-150 More about this Journal
Abstract
This experiment was conducted to evaluate the parameters such as nutrient requirements, POY, AnV, Totox, VBN, total plate count, dietary fatty acids and amino acids composition, that are not included in the registered standard composition items required by the Ministry of Agriculture and Forestry, of a moist pellet (MP), three domestic extruded pellets (DEP-1, DEP-2, DEP-3), and two foreign extruded pellets (FEP-1, FEP-2) that are utilized by domestic flounder farms at present. The crude protein was added in excess of the dietary protein requirement in 6 kinds of feeds. When considering the proper PH ratio, it is obvious that protein was added in excess, especially in MP and FEP-2. Crude fat was also added in excess, especially in FEP-1. MP contained a higher dietary phosphorus content than formulated feeds, surpassing the dietary phosphorus requirement and greatly increasing the possibility for causing water pollution. The oxidation of fatty acid and decomposition of protein in MP were higher than in formulated feeds, and may also cause problems on fish farms. Also, it is difficult to store and manage MP, Among the fatty acids, EPA and DHA contents in MP were higher than those in formulated feeds. It is necessary to conduct further studies of EPA and DHA contents in formulated feeds. Lysine content in MP and FEP-2 could meet the dietary lysine requirement of flounder, however, the possibility of insufficient lysine content in the other formulated feeds was high and we considered that extra supplementation was necessary. Therefore, it is necessary to set up quality control standards according to fish species and sizes while considering the specific character of aquatic formulated feeds to restore the confidence of feed companies and aquaculturists to these feeds. This may be an opportunity to make an earlier change from MP to formulated feeds.
Keywords
Flounder; Moist pellet; Formulated feeds; Quality; Biochemical analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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