Aquaculture America 2020

February 9 - 12, 2020

Honolulu, Hawaii

KEY CONSIDERATIONS IN FARM MANAGEMENT AND HEALTH NUTRIENTS FOR HEALTHIER SHRIMP

Nguyen Duy Hoa, PhD.
 Global Technical Director.
Empyreal Products, Cargill Inc.
Duyhoa_nguyen@cargill.com
 

Intensive shrimp culture in Vietnam  as well as in Southeast Asia  has proven postlarvae's quality , water-quality management and high-quality diets are all important for successful crops:

PL quality in term of daily growth rate is  considered the most important indicator to shorten the culture period as well as to resulted in large-size shrimp. There is a big difference in  growth  rate  with  an average daily growth rate varies  less than 0.2g, around 0.25g and over 0.35g  coming  from  three  different sources of  the genetic PL .

Water quality management is focusing on low salinity during the first 45 days (7ppt - 10ppt), high alkalinity (120 -250 ppm), stable pH of 7.6 to 7.9, and high dissolved oxygen (average of 20 HP per 1,000 m2) as well.         

Nursery at high stocking density (1,000 PL up to 5,000 PL per m2 ) in small lined tanks or lined ponds in indoor system has been practiced with premium hatchery diets (ranging from 45% up to 60% protein). Shrimp  farmers also do  top dressing with different healthy products, including vitamin/minerals, probiotics, organic acids, and immune-stimulators (nucleotides, β-glucan/Mannan, etc.). In addition, astaxanthin has been promoted by shrimp feed millers and also being top dressed at several farms for not only pigmentation but also for healthier shrimp.