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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. °CDiet (% protein)HSI (%)VSI (%)CF (%)Stress resistance response (mortality time measured in seconds)
18D283.41 ± 0.02Aa5.12 ± 0.05a0.94 ± 0.03Ff150 ± 0.03Ff
D322.33 ± 0.07Bb3.49 ± 0.02b1.32 ± 0.07Ee180 ± 0.03Ee
D361.70 ± 0.05Cc2.45 ± 0.03c1.49 ± 0.06Dd250 ± 0.03Dd
D401.44 ± 0.09Ff2.16 ± 0.05e1.68±0.02Aa360 ± 0.03Cc
D441.40 ± 0.02Ff2.11 ± 0.02e1.67 ± 0.01Aa440 ± 0.03Bb
D481.53 ± 0.01Ee2.30 ± 0.03d1.64 ± 0.02Ab580 ± 0.03Aa
D521.67 ± 0.01Dd2.53 ± 0.03d1.61±0.02Ac360 ± 0.03Cc
26D283.16 ± 0.02Aa4.97 ± 0.05a0.99 ± 0.03Ff280 ± 0.03Ee
D322.11 ± 0.07Bb3.31 ± 0.02b1.34±0.07Ee390 ± 0.03Dd
D361.51 ± 0.05Cc2.37 ± 0.03c1.55 ± 0.06Dd470 ± 0.03Cc
D401.30 ± 0.09Ee2.05 ± 0.05d1.69 ± 0.02Aa540 ± 0.03Bb
D441.27 ± 0.02Ee2.01 ± 0.02d1.70 ± 0.01Aa630 ± 0.03Aa
D481.41 ± 0.01Dd2.21 ± 0.03c1.68 ± 0.02Ab580 ± 0.03Bb
D521.57 ± 0.01Cc2.47 ± 0.03c1.64 ± 0.02Bc350 ± 0.03Dd
P value
Dietary protein0.0030.00050.0010.006
Temperature0.0080.00010.0010.003
Dietary protein x tempNSNSNS (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)