Why do we feed shrimp the way we do?
The potential shrimp aquaculture has for significant improvements in performance through improved genetics and nutrition will not be fully expressed unless appropriate feeding methods are practiced.
Red seaweed: Promising, sustainable feed additive combats ISA virus
In a study, Atlantic salmon fed diets with red seaweed had significantly higher levels of antiviral activity against the infectious salmon anemia virus than fish fed a control diet.
Low volume, high density: Milkfish demonstration project
A demonstration conducted at a milkfish farm in southern Philippines by the United States Soybean Export Council Soy-In-Aquaculture program highlighted the use of extruded floating feeds with satiation feeding management and principles of low-volume, high-density cage production.
Thermal treatment increases survival of WSSV-infected shrimp
Applied to shrimp postlarvae at Thai and Latin American farms, a thermal treatment of constant water temperature increased final survival rates.
Bacillus probiotics benefit tilapia rearing under challenging conditions in Brazil
A recent study that evaluated the benefits of using probiotics with a balanced mixture of Bacillus bacteria strains to inhibit pathogenic bacteria in tilapia.
Amino acid supplementation reduces protein levels in pangasius diets
Trials show that supplementation with amino acids could reduce protein levels from a typical 28 percent to 23 percent in pangasius diets.
Maximizing profits of larval shrimp rearing
Easily digested, live artemia offer important animal health benefits and improved performance when included in feeding regimes for larval shrimp. Pilot and commercial-scale trials have confirmed that artemia can be partially replaced in shrimp feeding.
Brazil survey: Animal welfare perspectives vary between producers, researchers
Survey participants also indicated that, in general, Brazil’s fish-farming industry is addressing elements of animal welfare to some degree, but can improve.
Temperature affects quality, safety of quahog clams
The rapid cooling of harvested quahog clams to achieve the product temperatures required by regulators and dealers can often result in mortalities due to thermal shock.
Dietary acidifier potassium diformate improves growth, survival in pangasius
As examined in various studies, potassium diformate can improve the growth and health status of pangasius when the dietary acidifier is included in feed.
Potential of YY male tilapia technology
YY male tilapia technology, based on the genetic manipulation of sex, provides a robust, reliable method of achieving male fish. It avoids the use of hormones and maintains strain purity in genetically normal males.
Beneficial microbes and pathogen control
A range of alternative products is available to improve animal health and water quality, and control pathogen loads. Beneficial microbes produce antimicrobial compounds and suppress pathogen proliferation.
Caveat emptor when seeking for EMS solutions
The development of polymerase chain reaction testing to detect the bacteria that cause EMS is important, but confirmation by bioassay of presumptive positives to ensure pathogenicity is a prudent intermediate step.
Development of 1-monoglycerides against AHPND
1-monoglycerides are known for their antibacterial and antiviral effects in the human pharmaceutical and animal husbandry industries. As a substitution for the preventive use of antibiotics, these molecules are being evaluated in the fight against AHPND.
Raceway systems offer tools for EMS management
Highly controlled tank and raceway systems can help farmers raise postlarval shrimp to larger sizes before stocking in grow-out ponds. Raceways have recently been implemented for EMS management.
Advances in intensive copepod production technology
Research at the Oceanic Institute has been successful in overcoming bottlenecks associated with rearing small-mouthed fish larvae by finding a suitable first feed. Early work on the calanoid copepod Parvocalanus crassirostris focused on parameters necessary for successful maintenance of stock cultures.