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Table 1 Formulation and proximate composition of five experimental diets (% of dry matter basis)

From: Effects of enzymatically hydrolyzed fish by-products in diet of juvenile rainbow trout (Oncorhynchus mykiss)

Ingredients (% in diet)

Dietsa

CON

TBB12.5

TBB25

TBB37.5

TBB50

Fishmeal

50

43.75

37.50

31.25

25.00

En. H.Bb

0.00

5.82

11.64

17.46

23.27

Blood meal

2.90

2.90

2.90

2.90

2.90

Soybean meal

3.50

3.50

3.50

3.50

3.50

Wheat gluten meal

7.9

7.9

7.9

7.9

7.9

Cornstarch

0.00

0.6

1.18

1.78

2.39

Wheat flour

20.00

20.00

20.00

20.00

20.00

Soybean oil

7.80

7.80

7.80

7.80

7.80

Fish oil

3.37

3.02

2.68

2.33

1.98

Cellulose

0.53

0.71

0.90

1.08

1.26

Vitamin premix

2.00

2.00

2.0

2.00

2.00

Mineral premix

2.00

2.00

2.0

2.00

2.00

Total

100

100

100

100

100

Proximate analysis (% of DM)

 Moisture

4.93

5.72

6.17

7.22

7.30

 Protein

50.22

48.71

48.34

47.95

46.81

 Lipid

13.71

12.75

14.89

14.25

13.61

 Ash

9.79

9.59

9.49

9.11

9.05

  1. TBB12.5 tuna backbone by-products at 12.5% FM replacement (Samhae Company, Gyeongiu, South Korea)
  2. TBB25 tuna backbone by-products at 25% FM replacement (Samhae Company, Gyeongiu, South Korea)
  3. TBB37.5 tuna backbone by-products at 37.5% FM replacement (Samhae Company, Gyeongiu, South Korea)
  4. TBB50 tuna backbone by-products at 50% FM replacement
  5. aCON control diet (the basal diet)
  6. bEn. H.B enzymatic hydrolyzed by-products (Samhae Company, Gyeongiu, South Korea)