Skip to main content

Table 5 Somatic indices and stress resistance response of fry Heteropneustes fossilis

From: Effect of water temperature on protein requirement of Heteropneustes fossilis (Bloch) fry as determined by nutrient deposition, hemato-biochemical parameters and stress resistance response

Temp. °C

Diet (% protein)

HSI (%)

VSI (%)

CF (%)

Stress resistance response (mortality time measured in seconds)

18

D28

3.41 ± 0.02Aa

5.12 ± 0.05a

0.94 ± 0.03Ff

150 ± 0.03Ff

D32

2.33 ± 0.07Bb

3.49 ± 0.02b

1.32 ± 0.07Ee

180 ± 0.03Ee

D36

1.70 ± 0.05Cc

2.45 ± 0.03c

1.49 ± 0.06Dd

250 ± 0.03Dd

D40

1.44 ± 0.09Ff

2.16 ± 0.05e

1.68±0.02Aa

360 ± 0.03Cc

D44

1.40 ± 0.02Ff

2.11 ± 0.02e

1.67 ± 0.01Aa

440 ± 0.03Bb

D48

1.53 ± 0.01Ee

2.30 ± 0.03d

1.64 ± 0.02Ab

580 ± 0.03Aa

D52

1.67 ± 0.01Dd

2.53 ± 0.03d

1.61±0.02Ac

360 ± 0.03Cc

26

D28

3.16 ± 0.02Aa

4.97 ± 0.05a

0.99 ± 0.03Ff

280 ± 0.03Ee

D32

2.11 ± 0.07Bb

3.31 ± 0.02b

1.34±0.07Ee

390 ± 0.03Dd

D36

1.51 ± 0.05Cc

2.37 ± 0.03c

1.55 ± 0.06Dd

470 ± 0.03Cc

D40

1.30 ± 0.09Ee

2.05 ± 0.05d

1.69 ± 0.02Aa

540 ± 0.03Bb

D44

1.27 ± 0.02Ee

2.01 ± 0.02d

1.70 ± 0.01Aa

630 ± 0.03Aa

D48

1.41 ± 0.01Dd

2.21 ± 0.03c

1.68 ± 0.02Ab

580 ± 0.03Bb

D52

1.57 ± 0.01Cc

2.47 ± 0.03c

1.64 ± 0.02Bc

350 ± 0.03Dd

P value

Dietary protein

0.003

0.0005

0.001

0.006

Temperature

0.008

0.0001

0.001

0.003

Dietary protein x temp

NS

NS

NS (P > 0.267)

NS (P > 0.23)

  1. HSI hepatosomatic index, VSI viscerosomatic index, CF condition factor
  2. Different upper case superscripts indicate significant differences (P < 0.05) between temperatures, whereas different with superscripts indicate significant differences between dietary protein levels; NS non-significant (P > 0.05)