Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
By J. Gamboa‐Delgado, C. Molina-Poveda, C. Cahu. 2003
114 citations recorded by the source corpus.
A study was conducted to evaluate variations of digestive enzyme activities in Litopenaeus vannamei (Boone) reared in commercial ponds under semi-intensive conditions. Shrimp were collected at each body weight increase of 2 g. As the shrimp grew (2^12 g), signi¢cant increases in the activities of lipase and chymotrypsin were observed. The total protease activity decreased from 6 g onwards. Trypsin activity showed a peak at 6 g and amylase activity increased two-fold after 2 g. Additionally, the stomach contents were analysed microscopically for shrimp between 2 and 10 g. Plant matter contributed above 30% of the total stomach content in 6-, 8- and 10-g shrimp. Detritus represented 58% and 62% of the total stomach content in 2- and 4-g shrimp, respectively, decreasing to 33^43% at greater shrimp weights. Arti¢cial feed showed a maximum contribution of 20% in 6-g shrimp. The present results show changes in the enzyme activity after the shrimp reach 6 g in body weight, evidenced by a decrease in total protease and an increase in lipase and amylase activities. The amylase/protease ratio was 2.6 in 2-g shrimp and increased steadily to 9.6 in 12-g shrimp. These ¢ndings suggest an adaptation of the enzymatic activity to diets with lower protein content as body weight increases, and may be related to the variation of the diierent items found in the stomach.
Subfields: Aquatic Science, Ecology
View Paper: https://www.semanticscholar.org/paper/dc39140236562bd6226f3c0057d72048f512ad15
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Citations in the corpus
- Genes and growth performance in crustacean species : a review of relevant genomic studies in crustaceans and other taxa (2013, background): “A number of studies have suggested that high growth rate, lower mortality rate and final body weight are closely linked to digestive capacity (Brito et al. 2000; Gamboa-Delgado et al. 2003; Pavasovic et al. 2007).”
- Effect of probiotic on larvae shrimp (Penaeus vannamei) based on water quality, survival rate and digestive enzyme activities (2009, background): “There was no doubt that the activity of digestive enzyme was influenced by many external and internal factors of the shrimp such as feed and metamorphic changes (Fang and Lee, 1992; Gamboa-Delgado et al., 2003).”
- Effects of white shrimp, Litopenaeus vannamei (Boone), and Nile tilapia, Oreochromis niloticus L., stocking density on growth, nutrient conversion rate and economic return in integrated closed recirculation system (2007, background): “Phytoplankton such as Navicula, Cymbella,Nitzschia andOscillatoria are reported as natural feed for shrimp and tilapia (Bombeo-Tuburan et al., 1993; Getachew, 1993; Gamboa-Delgado et al., 2003).”
- Effect of dietary supplementation of biofloc on growth performance and digestive enzyme activities in Penaeus monodon (2013, background): “Biochemical composition of thediet plays an important role in digestive enzyme profile in shrimp (Gamboa-Delgado et al., 2003).”