Open AccessProtein Requirements of the Freshwater Prawn Macrobrachium rosenbergii Evaluated by the Factorial Method
Author(s) -
Teshima ShinIchi,
Koshio Shunsuke,
Ishikawa Manabu,
Alam Md. Shah,
Hernandez Hernandez Luis Hector
Publication year - 2006
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2006.00020.x
Subject(s) - macrobrachium rosenbergii , prawn , biology , casein , zoology , body weight , protein requirement , factorial experiment , dietary protein , juvenile , food science , fishery , endocrinology , ecology , mathematics , statistics
The dietary protein requirement of the freshwater prawn Macrobrachium rosenbergii to obtain the maximum body protein retention was assessed by the estimated protein needed daily for maintenance ( M ) and body protein increment ( G ). The body protein increment was estimated by quantifying body nitrogen increments when the prawn was fed high‐protein diets composed primarily of casein. The protein required for maintenance was estimated by regressing weight gains in feeding experiments using graded dietary levels of casein. The true daily retention ( R ) or increase in body protein of the prawn corresponds to the sum of M and G . The values of M , G , and R determined in the present study were 3.86, 0.24, and 4.10 g/kg body weight/d, respectively. On the basis of the daily body protein increment and the net protein utilization of casein (58%), dietary protein requirement of the juvenile M . rosenbergii for maximum body protein retention was suggested to be about 7.1 g/kg body weight/d.