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Substitution of soy protein concentrate for fishmeal in diets of tiger shrimp Penaeus monodon
Author(s) -
Paripatanat T,
Boonyaratpalin M,
Pengseng P,
Chotipuntu P
Publication year - 2001
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 - 10.1046/j.1355-557x.2001.00045.x
Subject(s) - penaeus monodon , shrimp , biology , fish meal , zoology , feed conversion ratio , soybean meal , weight gain , meal , food science , ingredient , body weight , fishery , fish <actinopterygii> , ecology , endocrinology , raw material
The objective of this experiment was to evaluate soy‐protein‐concentrate (SPC, 65% protein) as a replacement ingredient for fishmeal (FM, 65% protein) in shrimp diets. Shrimps ( Penaeus monodon , PL‐15) were raised in the laboratory to 1.5 g body weight and were then transferred into 120‐L aquaria with water temperature maintained at 28 ± 2 °C. Five isonitrogenous and isocaloric diets (protein 36%, ME 15.7 kJ g −1 ) were prepared using SPC at inclusion levels of 0, 8.75, 17.50, 26.25 and 35% by replacing 0, 25, 50, 75 and 100% of the FM from the diet, respectively. All diets contained 12% soybean meal. The diets were randomly assigned to 45 aquaria ( n = 9), each containing 30 shrimps. Shrimps were fed to satiation four times a day for an 8‐week period and were exposed to alternating 12 h light and dark periods. Aggregate body weight for each aquarium was recorded every 2 weeks, when shrimps were also counted. The feed intake by shrimps was not different at 0, 25 or 50% FM substitution levels, but was significantly decreased at 75 and 100% substitution levels. The body weight gains of shrimp fed diets with 0, 25 or 50% FM substitution were significantly better than those fed diets with 75 or 100% FM substitution. A 100% substitution of FM from the diet had a severe negative effect on the body weight gain. With increasing substitution of FM with SPC, the feed efficiency ratio, protein efficiency ratio, and protein and fat gain in the shrimp followed the same general pattern as described for body weight. Mortality was not significantly different among the dietary treatments. These data indicate that a 17.5% inclusion of SPC in the diet of P. monodon can support normal growth of the shrimp with the potential for substituting FM.