Chemical Composition and Energy Density of Cyprinus carpio, Carassius auratus and Siniperca kneri in Fushun Section of Tuo River
60 specimens of Cyprinus carpio (c),Carassius auratus (a) and Siniperca kneri (k) were collected from Tuo River,Fushun,Sichuan in October,2013.Their chemical compositions were measured and their energy density was estimated.The results showed that the average fat contents of three species of fish were 3.24％,4.13％,and 2.78％ respectively,the protein contents were 16.96％,16.28％,and 17.27％,the water contents were 75.42％,74.05％,and 74.06％,and the energy density were 5.28,5.47,and 5.18 kJ · g-1 respectively.The relationship between energy density(Ec,Ea,Ek) and water content(CWATC,CWATa,CWATk) in three fishes could be described as:Ec=-0.368 9CWATc + 33.081,(r2 =0.799 6,n=30,p＜0.01);Ea =-0.308 4 CWATa + 28.304,(r2=0.823 5,n=13,p＜0.01);Ek=-0.385 5CWATk+33.729,(r2 =0.882 5,n=17,p＜0.01).Statistical analysis showed that there was a significant positive correlation between the body length and protein content,fat content and energy density in Carassius auratus,but there was not in the other two species of fish.There was a significant negative correlation between the water content and protein content,fat content and energy density in three fishes.The results suggest that the contents of protein,lipid and energy density of Cyprinus carpio,Carassius auratus and Siniperca kneri can be estimated by their water content.
Cyprinus carpioCarassius auratusSiniperca knerichemical compositionenergy densityTuo River
NETL
NSTL
万方数据
维普
