Global Aquaculture Alliance — The Advocate
Authors examined whether beta-glucans extracted from bakers yeast could improve the survival and growth of Pacific white shrimp challenged with infectious myonecrosis virus.
Although still being refined, the IMNV challenge method developed at the University of Arizona has shown promise as a tool to measure resistance in selected family lines of L. vannamei.
A recent study in Brazil tested the efficacy of nine commercial feed attractants for Litopenaeus vannamei. Condensed fish-soluble protein, an amino acid complex with digested bivalve mollusk, and whole squid protein hydrolysate stimulated the highest feeding responses.
The authors conducted a study to determine how reducing the protein content of a diet would affect the growth performance of L. vannamei reared in an experimental microbial floc culture system.
In the evolution of shrimp farming, white shrimp emerged as the primary species. While some farms in the Americas successfully converted to intensive practices, wide adoption has been limited.
A study showed that lipid source and DHA and EPA levels in feeds can influence the growth performance and tail fatty acid profiles of L. vannamei farmed under hypersaline conditions.
India farmers are considering ways to boost production. If approved on a wider basis, production of Pacific white shrimp could boost overall yields.
Research at the Oceanic Institute found that white shrimp grown in a raceway at high density could reach 34-grams in 155 days with minimal water use.
In L. vannamei trials in Indonesia, results confirmed that somewhat lower protein levels in feed had no effect on production performance.