Table 1
Nutrient contents (%, DM) of dietary ingredients

Brown fishmeala

Tuna by-product mealb

Proximate composition

 Crude protein

77.2

64.6

 Crude lipid

8.2

9.6

 Ash

13.7

21.4

Indispensable amino acids

 Arginine

4.0

3.5

 Cysteine

0.7

0.6

 Histidine

2.9

1.7

 Isoleucine

3.1

2.5

 Leucine

5.1

4.1

 Lysine

5.5

4.3

 Methionine

2.2

1.8

 Phenylalanine

3.0

2.2

 Threonine

3.0

2.5

 Valine

3.6

2.7

Dispensable amino acids

 Alanine

4.2

3.8

 Aspartic acid

6.3

5.0

 Glutamic acid

8.9

6.9

 Glycine

4.1

4.2

 Proline

2.8

3.4

 Serine

2.8

2.4

 Tyrosine

2.4

1.8