Table 2. Summary of dietary nutrient requirements of mrigal, Cirrhinus mrigala (requirement expressed for dry feed except where otherwise mentioned)
Nutrients			Life stage/size class
			Larvae	Fry	Fingerling	Juvenile
Crude protein, % min				40.0-45.0	30.0-45.0
Amino acids, % min. of dietary protein
	Arginine			5.55	4.6
	Histidine			2.63	2.13
	Isoleucine				3.12
	Leucine				4.33
	Lysine				5.75
	Methionine				3.00*
	Phenylalaline				4.38
	Threonine				4.5	4.15
	Tryptophan			1.2	0.95
	Valine				3.87
Lipid, % min.				6.0-9.0	5-7.5
Essential fatty acids, % min.
	18:2n-6					1
	18:3n-3					1
Phospholipid, % min.			4
Carbohydrate, % max.				27.0-28.0
Metabolizable energy (kcal/100g)				355
* In the presence of 1.0% cystine (of dry feed)
Data source: Mohanty et al. (1990); Das and Ray (1991);
Ahmed and Khan (2004a); Benkappa and Varghese (2005); Ahmed and Khan (2005);
Benkappa and Varghese (2003a); Benkappa and Varghese (2003b); Ahmed and Khan (2004);
Ahmed et al. (2003); Benkappa and Varghese (2004); Ahmed et al. (2004); Benkappa and Varghese (2002);
Ahmed and Khan (2005b); Singh and Sinha (1981); Jafri et al. (1995);  Erfanullah and Jafri (1998);
Marimuthu and Sukumaran (2001);  Paul et al. (1998) and Hasan and Jafri (1996)