Overcoming Stunted Shrimp Growth & High FCR in Vannamei Culture
Fix stunted vannamei shrimp growth and high FCR. Ionic mineral balance, gut enzyme activation, hepatopancreas health, and feeding management.
Visible Symptoms
Average Daily Gain (ADG) below 0.2g per day; size variation (shooters vs runts); empty or pale hepatopancreas; high FCR (> 1.6).
Primary Causes
- Chronic subclinical gut enteritis (EHP microsporidian or Vibrio infection).
- Mineral deficiency in low-salinity borewell waters impairing post-moult weight gain.
- Poor quality feed with low digestible protein and essential fatty acids.
Frequently Asked Questions
How can a farmer improve shrimp hepatopancreas health?
Supplement herbal liver tonics rich in phospholipids and choline chloride in morning feeds to restore lipid vacuoles in hepatopancreatic epithelial cells.