Aquafeeds
Moving toward sustainable fish feeds
The aquaculture industry has significantly reduced fishmeal levels in feeds for major farmed species. To further reduce fishmeal use, new research approaches are essential.
Aquafeeds
Breaking the 20 percent soy barrier in fish feed
Reduced performance in fish fed high-soy feeds has been blamed on antinutrients, low methionine content and palatability issues. Pretreatment to inactivate anti-nutritional compounds and supplementation with amino acids improves soy-based feed performance, but not to control levels.
Aquafeeds
Beta-glucans in barley increase immune response, disease resistance in rainbow trout study
In a study, ground barley containing different levels of beta-glucan was substituted for wheat in experimental diets fed to rainbow trout.
Aquafeeds
Increased ethanol production shifts feed industry grain use
The large-scale shift of corn from animal feed to ethanol production is a potentially disruptive force in the feed ingredient world.
Health & Welfare
Fish oil replacements shift fatty acid content of farmed fish
Fish oil replacements in feeds alter the nutritional profiles of farmed fish. The challenge is to determine how and when to feed plant or fish oils to maintain desirable omega-3 levels in fillets.
Health & Welfare
Vitamins: Varied factors affect health, disease resistance effects in fish
Technical literature varies in reporting the ability of vitamins to improve fish survival and resistance to disease following infection with pathogens.
Aquafeeds
Best management practices for salmon feeds
BMPs for salmon feed manufacturers cover formulation and evaluation of ingredients, while farmers should focus on amount, frequency and delivery of feed.
Aquafeeds
Dietary lysine in plant protein diets improves rainbow trout performance, water quality
Evaluating trout performance fed diets with supplemental lysine in plant protein meal, and total ammonia nitrogen and soluble phosphorus excretion.
Aquafeeds
Advances in the development of low-pollution feeds for salmonids
Feed is the source of enriching nutrients in rainbow trout farming, and most efforts to lower pollution from trout farms involve modifications of feeds.