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Feasibility of fishmeal replacement by shrimp head silage protein hydrolysate in Nile tilapia ( Oreochromis niloticus L) diets
Author(s) -
PlascenciaJatomea Maribel,
OlveraNovoa Miguel A,
ArredondoFigueroa José Luis,
Hall George M,
Shirai Keiko
Publication year - 2002
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.1092
Subject(s) - nile tilapia , oreochromis , shrimp , fish meal , silage , tilapia , biology , hydrolysate , zoology , weight gain , feed conversion ratio , food science , body weight , fishery , fish <actinopterygii> , biochemistry , endocrinology , hydrolysis
This study provides information on the use of shrimp head silage protein hydrolysate (SPH) as an alternative protein source for tilapia feeding. Six diets (28% protein, 12% lipid) were prepared where fishmeal protein was replaced at levels of 0 (control), 10, 15, 20, 25 and 30% with the hydrolysate. The diets were supplied to Nile tilapia fry (338 mg initial weight) stocked in plastic recirculating 20 l tanks (10 animals per tank), with three replicates per treatment. After an 8 week experimental period, fish fed the diets containing 10 and 15% SPH showed significantly better performance in terms of final body weight, weight gain (%), mean daily weight gain (mg day −1 ), specific growth ratio and feed conversion ratio than those fed the control diet (fishmeal as protein source) and higher‐SPH diets. It is concluded that shrimp head hydrolysate is a promising alternative protein source for tilapia feeding, improving growth ratio at dietary inclusion levels as high as 15%. In addition, the diets with added shrimp silage protein were well accepted by the fish, which avidly consumed the feed during the experiment. © 2002 Society of Chemical Industry