Open AccessArginine and histidine requirements of the Indian major carp, Labeo rohita (Hamilton)
Author(s) -
MURTHY H.S.,
VARGHESE T.J.
Publication year - 1995
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/j.1365-2095.1995.tb00049.x
Subject(s) - labeo , histidine , arginine , carp , biology , casein , amino acid , dietary protein , food science , biochemistry , zoology , fish <actinopterygii> , fishery
Growth studies were conducted to quantify requirements for the essential amino acids (EAA), arginine and histidine in Labeo rohita (Hamilton). Diets incorporating casein and gelatine, as sources of intact protein, supplemented with crystalline amino acids were formulated to a crude protein content of 400 g kg −1 . Diets with six graded levels of arginine (14.6, 17.0, 19.0, 21.0, 23.0 and 25 g kg −1 ) and histidine (3.2, 5.0, 7.0, 9.0, 11.0 and 13.0 g kg −1 ) were formulated and fed to triplicate groups of juvenile rohu twice a day up to satiation for 60 days. Dietary requirements for arginine and histidine for rohu, estimated using break point analysis, were 23 and 9 of the diet respectively (57.5 and 22.5 g kg −1 of dietary protein). Food conversion rate, specific growth rate and survival were better in treatments with diets containing optimum levels of EAA.