1. Many marine fish species require n-3 highly unsaturated fatty acid (HUFA) as their essential fatty acid. Fatty acids with high degree of un-saturation are more susceptible to attack from oxygen free radicals than saturated fatty acids. This may increase the requirement of anti-oxidative nutrients. Further, fatty acid composition of dietary lipids has been shown to affect the fatty acid profile and lipid per-oxidation activity in bio-membrane of hybrid tilapia. When dietary HUFA increased, the lipid per-oxidation activity also increased. (Translate this paragraph into Chinese). (25%)

3. Aquaculture is defined as “The farming of aquatic organisms including fish, mollusks, crustaceans and aquatic plants. Farming implies some sort of intervention in the rearing process to enhance production, such as regular stocking, feeding, protection from predators, etc. Farming also implies individual or corporate ownership of the stock being cultivated.” For statistical purposes, aquatic organisms which are harvested by an individual or corporate body which has owned them throughout their rearing period contribute to aquaculture, while aquatic organisms which are exploited by the public as a common property resource, with or without appropriate licenses, are the harvest of fisheries. (Translate this paragraph into Chinese) (25%)

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