Table 2. Summary of dietary nutrient requirements and utilization of milkfish, Chanos chanos (requirement expressed for dry feed)
Nutrient level		Life stage/size class
		Fry	Fingerling	Juvenile
Crude protein, % min		40		30.0�40.0
Amino acids, % min of dietary protein
	Arginine			5.2
	Histidine			2
	Isoleucine			4
	Leucine			5.1
	Lysine			4
	Methionine + Cys			3.2
	Phenylalanine +Tyr			5.2
	Threonine			4.5
	Tryptophan			0.6
	Valine			3.6
Crude lipid, % min			7.0�10.0
Essential fatty acids, % min
	18:3n-3 + 20:5n-3 + 22:6n-3			1.0�1.5
Carbohydrate, % max			25
Digestible energy, min kJ/g			10.4�14.7
Protein to energy ratio, %				44.4
Data source: Lim et al. (1979); Pascual (1989); Borlongan and Coloso (1993); Borlongan (1992); Coloso et al. (1988)