Open AccessA Study of the Effects of Feeding Synthetic Diets to Brown Shrimp (Penaeus aztecus) 1
Author(s) -
Hysmith B. T.,
Booth J. R.,
Cook H. L.,
Mies W. L.
Publication year - 1972
Publication title -
proceedings of the annual workshop ‐ world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 1043-5166
DOI - 10.1111/j.1749-7345.1972.tb00080.x
Subject(s) - shrimp , biology , penaeus , palatability , zoology , fishery , hatchery , feed conversion ratio , food science , body weight , fish <actinopterygii> , endocrinology
Synthetic diets prepared by Ralston Purina, and commercial pet foods were fed to brown shrimp (Penaeus aztecus) in replicated, 30‐day feeding trials under controlled environmental conditions. A number of Ralston Purina diets were evaluated for palatability. Postlarval hatchery‐raised shrimp and larger stock obtained from the bays were used. Individual lengths and weights of those animals stocked and harvested were used to statistically develop averages from which growth rate, survival, food conversion, and condition index were calculated. Growth rates were found to be related to the size of shrimp, feeding rate, protein content and available metabolizable energy. Survival was found to be related to food availability, disease, and the diet fed. Food conversion was related to the diet requirements of the shrimp and the feeding rate. The condition index was not related to diet and was descriptive of the intermolt stage of the individuals only. As postlarvae, brown shrimp were able to utilize a 45% protein diet effectively when fed at 10% of body weight per day. Development into juveniles changed the relative importance of protein and metabolizable energy in the diet with an accompanying reduction in the food conversion. The growth rates measured in these tests were about half of those measured in the natural habitat and in ponds with supplemental feeding.