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Table 5 Fish growth and performance of four experimental feeds

From: Glutamate promotes nucleotide synthesis in the gut and improves availability of soybean meal feed in rainbow trout

 

FM

SBM

Glu 1 %

Glu 2 %

Initial BW (g)

9.56 ± 0.51

9.73 ± 0.56

9.60 ± 0.49

9.70 ± 0.52

Final BW (g)

57.80 ± 5.43

41.44 ± 5.13*

40.24 ± 4.41*

47.22 ± 3.84

SGR (%/day)

2.57

2.07

2.05

2.26

Weight gain (%)

504.37

325.98

318.93

387.03

Feed efficiency ratio

1.03

0.85

0.85

0.87

DFC (%BW/day)

2.40

2.53

2.48

2.54

Mortality (%)

0.00

0.00

2.00

0.00

HSI (%)

1.29 ± 0.13

0.98 ± 0.18*

0.97 ± 0.09*

1.05 ± 0.17*

GBSI (%)

0.30 ± 0.06

0.17 ± 0.03*

0.17 ± 0.03*

0.21 ± 0.06*

  1. The fish were challenged to 8 weeks of experiment. The final body weight and tissue weight were measured after fasting for the last 48 h of the experiment. The initial body weight was measured without fasting
  2. BW body weight, SGR specific growth rate, DFC daily feed consumption, HSI hepato-somatic index (liver weight (g)/body weight (g)) × 100, GBSI gallbladder-somatic index (gallbladder weight (g)/body weight (g))
  3. * p < 0.05 compared to FM group
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