Table 4.
Comparative analysis of standard length, body weight, abnormal rate, gonadosomatic index (GSI), hepatosomatic index (HSI) and viscera index (VI) for each type of skeletal deformity in Far Eastern catfish, Silurus asotus*1

	Total samples (n=60)	Normal samples (n=56)	Types of normal and skeletal deformity*2
			S(n=1)	J(n=1)	U(n=1)	M(n=1)
			Standard length(mm)	461±8.2	461±8.2	182.2	454.5	463.9	441.3
Body weight(g)	341±9.8	341±9.8	122.4	354.1	367.2	349.1
Abnormal rate(%)	4/60(6.5)	0/56(0.0)	1/60(1.6)	1/60(1.6)	1/60(1.6)	1/60(1.6)
GSI*3	6.5±1.27	6.5±1.00	6.4	6.9	6.1	6.6
HSI*4	3.2±1.54	3.3±0.86	3.0	3.4	3.9	3.1
VI*5	5.1±1.41	5.0±0.79	4.8	4.8	4.9	4.1

The values of normal group are means SD (n=20) of triplicate groups.
S: spinal curvature; J: The luxation of jawbone; U: abnormality of upper lip; and M: malocclusion.
Gonadosomatic index (GSI)=(gonad weight/body weight) 100.
Hepatosomatic index (HSI)=(liver weight/body weight) 100.
Viscera index (VI)=(intestine weight/body weight) 100.