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Replacement of fish meal with co‐extruded wet tuna viscera and corn meal in diets for white shrimp ( Litopenaeus vannamei Boone)
Author(s) -
Hernández Crisantema,
SarmientoPardo Jazmín,
GonzálezRodríguez Blanca,
Parra de la Isabel Abdo
Publication year - 2004
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2004.01139.x
Subject(s) - litopenaeus , shrimp , biology , fish meal , meal , tuna , zoology , feed conversion ratio , fishery , weight gain , food science , body weight , fish <actinopterygii> , endocrinology
A feeding trial was conducted to evaluate the potential of replacing fish meal with co‐extruded wet tuna viscera and corn meal in diets for juvenile white shrimp Litopenaeus vannamei . Five practical diets were formulated to contain 30% crude protein and 16.6 kJ g −1 . The feeding experiment was carried out in a recirculating seawater system with fifteen 25‐L tanks with 15 shrimp per tank. Each dietary treatment was fed in triplicate in a completely randomized design for 41 days. Percent weight gain (WG%), survival (S%) and feed conversion ratio (FCR) were calculated, comparisons of these parameters showed no statistical differences ( P >0.05) among treatments. The shrimp almost tripled their weight during the feeding trial. Under the experimental conditions S%, WG% and FCR were either improved or were not significantly influenced by the replacement of fish meal with double co‐extruded viscera+corn, except for a slight increase in feed consumption without affecting FCR. Hence, this product can be included by up to 40% in practical shrimp diets without any detrimental effects.