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Journal of Taiwan Fisheries Research
Effect of Lipid in Diet on the Growth Rate and Fatty Acid Composition of Body Oil of Black Porgy, Acanthopagrus schlegeli
- Date：1994-12-01
- Volume：2
- No：2
- Page：79-87
- Auther：Yeh, H. L., C. Y. Lin., C. H. Hsueh and W. C. Wang
To investigate the effects of lipid on the growth of black porgy (Acanthopagrus schlegeli), five types of lipid were added into formulated diet. After eight weeks feeding trial, the average growth rate of black porgy fed every two weeks with diet containing mackerel viscera oil was 11.21%. Growth rates of fish fed diets containing soybean oil, mixed fish oil, EPA concentrated oil mixed with soybean oil, and mackerel viscera oil mixed with soybean oil were 10.70, 10.35, 10.55 and 9.18%, respectively. The protein efficiency ratio and the feed conversion rate of the diet containing mackerel viscera oil were 1.34 and 2.06, respectively, which were better than those diets containing other types of lipid. The study suggested that black porgy had higher utilization of C 20:5 and C 22:6 than C 18:2 for the highly unsaturated fatty acid (HUFA). Also, the higher the level of HUFA in diet, the higher the level of HUFA would be in the lipid of fish body.