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Production Response and Digestive Enzymatic Activity of the PacificWhite Shrimp Litopenaeus vannamei (Boone, 1931) Intensively Pregrown inMicrobial Heterotrophic and Autotrophic-Based Systems
Manuel de Jesús Becerra Dórame
Marcel Martínez Porchas
Luis Rafael Martínez Córdova
José Antonio López Elías
Marco Antonio Porchas Cornejo
Acceso Abierto
DOI: 10.1100/2012/723654
ISSN: 1537-744X
Enzymatic Activity, Litopenaeus vannamei
"Shrimp postlarvae were reared into different microcosm systems without water exchange; a traditional system based on simple fertilization to improve microalgae concentration (control), an autotrophic system (AS) based on the promotion of biofloc and biofilm by the addition of fertilizer and artificial substrates and a heterotrophic system (HS) based on the promotion of heterotrophic bacteria by the addition of nitrogenous and carbonaceous sources and artificial substrates. Better growth performance and survival were registered in shrimp from the AS and HS compared to the control. Feed conversion ratios were below 0.7 for all treatments, but AS and HS were significantly lower than the control. Regarding digestive performance, no significant differences were observed for trypsin, amylase and lipase activities among AS and control shrimp; however, shrimp from HS showed a higher trypsin and amylase activities, suggesting a higher digestive activity caused by the presence of microbial bioflocs. The presence of biofilm and bioflocs composed by either autotrophic or heterotrophic organisms in combination with formulated feed improved the growth performance and survival of shrimp. Apparently, such combination fits the nutritional requirements of shrimp."
Hindawi Publishing Corporation
The Scientific World Journal
Manuel J. Becerra-Dórame, Marcel Martínez-Porchas, Luis R. Martínez-Córdova, Martha E. Rivas-Vega, José A. Lopez-Elias, and Marco A. Porchas-Cornejo, “Production Response and Digestive Enzymatic Activity of the Pacific White Shrimp Litopenaeus vannamei (Boone, 1931) Intensively Pregrown in Microbial Heterotrophic and Autotrophic-Based Systems,” The Scientific World Journal, vol. 2012, Article ID 723654, 6 pages, 2012. doi:10.1100/2012/723654
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