Aquafeeds
A study assessed the growth performance and fillet fatty acid composition of juvenile hybrid striped bass that were fed various diets containing different levels of fish oil, soybean oil, and blends of both. Results suggest that alternative lipid composition influences the degree of tissue fatty acid profile distortion.
Innovation & Investment
Moving aquaculture offshore could spark a global production boost needed to meet growing demand for protein. Producers and investors, however, are wary of the challenges, cost and regulatory red tape. One patient U.S. entrepreneur, however, is undaunted.
Health & Welfare
Anecdotal information has suggested that pond-reared hybrid striped bass are more vulnerable to transportation-related stressors than cage-reared fish. Study results suggested that accumulation of carbon dioxide and decreasing pH levels may contribute to this phenomenon. Agitation during simulated transport mitigated the carbon dioxide accumulation and stabilized pH, but shifted the total ammonia nitrogen equilibrium in favor of un-ionized ammonia nitrogen.Ultimately, the agitators did not substantially attenuate the stress responses observed in the fish.