Aquaculture America 2024

February 18 - 21, 2024

San Antonio, Texas

VITAMIN REQUIREMENT OF PACIFIC WHITE SHRIMP Penaeus vannamei POST-LARVAE

Kyeong-Jun Lee* and Daehyun Ko

 

Department of Marine Life Sciences

Jeju National University

Jeju 63243,  South Korea

kjlee@jejunu.ac.kr

 



 The Pacific white shrimp is the most economically valuable shrimp species among crustacean aquaculture species. The fast growth, disease resistance, and tolerance for a wide range of water temperature and salinity are the key characteristics  of the  shrimp species cultures . Vitamin E, as an essential micro-nutrient, plays important roles in various physiological and biochemical processes.  Vitamin E maintains and enhances  the growth, innate immunity and antioxidant capacity of fish and shrimp. Thus, t his study was conducted to determine the dietary vitamin E requirement for Pacific white shrimp post-larvae.

The basal diet (E0) was prepared using soybean meal, fish meal and fish oil (protein, 32.5%; lipid, 9.20%). Four other diets were prepared by adding vitamin E (DL-α-tocopherol acetate) of 40 , 80 , 120 and 160 mg/kg to the basal  diet (designated as E40 , E80 , E120 and E160 , respectively). Each diet was randomly assigned  in  quadruplicate group s of  each 50 shrimp (3.95 ± 0.21 m g) and  fed to the shrimp  for 34 days.

The growth performance and feed utilization efficiency (FCR, PER) were significantly increased by vitamin E supplementation.  The survival was the lowest in E0 group (65%), but no significant difference was found.  Relative mRNA expression levels of insulin-like growth factor-binding protein, amylase, chymotrypsin and superoxide dismutase genes were significantly increased in shrimp fed vitamin E supplemented diets than in shrimp fed E0 diet.  Shrimp fed E80, E120 and E160 diets  had  significantly higher resistance to ammonia than shrimp fed E0 diet. Broken line regression analysis indi cated that the optimum vitamin E level of the shrimp post-larvae would be 60.5 mg/kg diet.