การศึกษาเปรียบเทียบผลของโพรไบโอติกจากแบคทีเรียกับสารกระตุ้นภูมิคุ้มกันเชิงพาณิชย์ต่อระบบภูมิคุ้มกันในกุ้งกุลาดำ / พิศมัย โพธิ์เวชกุล = Comparative study of bacterial probiotic and commercial immunostimulant on black tiger shrimp immune system / Pissamai Powedchagun
Comparative study of five different diets on black tiger shrimp immune system: Control (regular shrimp feed); BG (regular shrimp feed with 2 g/kg P'glucan); F-BS11-1 (regular shrimp feed: formalin-fixed probiotic bacterium BS11; 2:1 dry weight/wet weight (dw/ww); F-BS11-2 (regular shrimp feed: formalin-fixed probiotic bacterium BS11; 3:1 dw/ww); and F-BS 11-3 (regular shrimp feed: formalin-fixed probiotic bacterium BS11; 6: 1 dw/ww) were tested. Results from two experiments indicated that average shrimp weights and lengths, after 90 day-culture fed F-BS11, were higher than those of the other groups. Survival was not different among all treatments. Means of total hemocyte count of all shrimps after 90 days were ~107 cell ml1 . After challenge test by Vibrio harveyi 639 for 5 days, mean of total hemocyte count from all shrimps decreased to ~ 10s cell mlMoreover, cumulative mortality of control shrimps were the most pronounced among all treatments.
In experiment III, four different diets: Control (regular shrimp feed); BG (regular shrimp feed with 2 g/kg P'glucan); BS11 (regular shrimp feed: Bacillus SI 1; 3: 1 dw/ww); and F-BS11-2, were tested on shrimps. Interestingly, growth and survival including total hemocyte count and antibacterial activity of shrimps feed BS11 after 90 day-culture were higher than those of the other groups. Decrease in total hemocyte count from ~10? cell ml1 to ~105 - 106 cell ml', after challenging by V. harveyi, among shimps in four treatments was detected. However, antibacterial activities increase were not significantly detected. Cumulative mortality of BS11 shrimps was the least among all treatments after 7 days of challenge test. Pathogenesis using immunohistochemistry technique was detected on hepatopancreas, hematopoietic tissue and heart of infected shrimps. No antibiotics in shrimp tissues from all treatments was detected by CM-test.
SUBJECT
กุ้งกุลาดำ -- การเลี้ยง -- สูตรผสม
กุ้งกุลาดำ -- วิทยาภูมิคุ้มกัน
สารกระตุ้นภูมิคุ้มกัน
Black tiger shrimp -- Feeding and feeds -- Recipes