Effect of Debaryomyces hansenii on the antioxidant response of juvenile white shrimp Litopenaeus vannamei
Journal Title: Revista MVZ Cordoba - Year 2012, Vol 17, Issue 1
Abstract
Objective. To determine the antioxidant response [superoxide dismutase (SOD) and catalase (CAT) activity], as well as the total haemocyte count (CTH), and protein level (CP) in shrimp Litopenaeus vannamei exposed to different doses and yeast strains of Debaryomyces hansenii (DH5, DH6, LL1), and a commercial immunostimulant (LAM). Materials and methods. The yeast strains were cultured and administered daily directly into the shrimp tanks (8 ± 0.2 g) in different concentrations (104 – 106 CFU/mL), while the LAM was administered weekly (0.5 mg/L). The organisms were kept under laboratory conditions (28°C, 35‰, 80% daily water exchange, commercial diet for shrimp fed ad libitum). Each treatment was twice distributed and the results were evaluated through variance analysis and the Tukey method. Results. A significant THC (p<0.05) was detected for the treatments with DH6 and LL1 (106 CFU /mL) compared to the control group, whereas strains DH5 and DH6 presented a significant increase (p<0.05) in the value of CP for the 104 CFU/mL dose. SOD and CAT values increased significantly (p<0.05) for shrimp exposed to LAM. Conclusions. The results of this study illustrate that D. hansenii increased the antioxidant response, and CTH of shrimp.
Authors and Affiliations
María Pacheco M, M. Sc| Centro de Investigaciones Biológicas del Noroeste, Mar Bermejo No. 195, Col. Playa Palo de Santa Rita, La Paz, BCS, México., Ángel Campa C, Ph. D| Centro de Investigaciones Biológicas del Noroeste, Mar Bermejo No. 195, Col. Playa Palo de Santa Rita, La Paz, BCS, México., Gabriel Aguirre G, Ph. D *| Universidad Autónoma de Tamaulipas. Facultad Facultad de Medicina Veterinaria y Zootecnia. Km. 5 Carr. Cd. Victoria - Mante, Cd. Victoria, Tamps, México.Correspondencia: gabaguirre@uat.edu.mx., Antonio Luna G, Ph. D| Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional-Instituto Politécnico Nacional. Blvd Juan de Dios Bátiz Paredes 250, Guasave, Sin., México., María Guzmán M, Ph. D| Centro de Investigaciones Biológicas del Noroeste, Mar Bermejo No. 195, Col. Playa Palo de Santa Rita, La Paz, BCS, México., Felipe Ascencio, Ph. D| Centro de Investigaciones Biológicas del Noroeste, Mar Bermejo No. 195, Col. Playa Palo de Santa Rita, La Paz, BCS, México.
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