The relationship between production in subtropical earthen ponds of fry suitable for hormonal sex inversion and degree days was quantified for Nile tilapia (Oreochromis niloticus; Egypt strain) and blue tilapia (O. aureus).
A study was conducted to measure the effects of commercial probiotics on Pacific white shrimp in a standardized AHPND challenge model under controlled laboratory conditions. Results show that the probiotics treatments by themselves have beneficial effects, such as higher survival and histological signs of hepatopancreas regeneration.
The preventive use of common salt (sodium chloride) by commercial producers of freshwater fishes has many benefits, including helping with the routine prevention of losses due to diseases, stress and mishandling during transport, harvesting, grading, counting, weighing and induced spawning.
La remoción del tallo o pedúnculo ocular de camarones hembras reproductoras ha ayudado en el crecimiento explosivo de la acuacultura a escala comercial. Un compromiso de un productor de camarones de América Central ha demostrado que la producción de camarones sin ablación puede aliviar las preocupaciones de bienestar animal sin la temida caída en la producción.
The preventive use of common salt (sodium chloride) by commercial producers of freshwater fishes has many benefits, including helping with the routine prevention of losses due to diseases, stress and mishandling during transport, harvesting, grading, counting, weighing and induced spawning.
Experiments were conducted to evaluate the potential survival and growth benefits of three multi-strain probiotics in three different stages of juvenile rohu (hatchling to advanced fry). Results showed beneficial effects of the probiotics treatments for the hatchling and fry stages, but not for later stages.
The prevalence of Perkinsus sp. in cultured Pacific oysters and the infection intensity during an annual culture cycle using two detection methods were studied in Sinaloa, Mexico. Pathogen prevalence varied depending on the temperature and the age of the culture.
Removing the eyestalk of broodstock female shrimp aided in the explosive growth of commercial-scale aquaculture. An undertaking by a Central American shrimp farmer has shown that producing shrimp without ablation can ease animal welfare worries without the feared drop in production.
Promoting water circulation during the day time is an effective strategy to enrich pond water with oxygen produced by photosynthesis, and can significantly reduce the costs of night time supplemental aeration. Many types of effective, commercial water circulators are available.
Promoting water circulation during the day time is an effective strategy to enrich pond water with oxygen produced by photosynthesis, and can significantly reduce the costs of night time supplemental aeration.
Authors examined the histological features from shrimp infected with the emerging microsporidian parasite Enterocytozoon hepatopenaei (EHP). A PCR assay method was used to detected in hepatopancreatic tissue, feces and water sampled from infected shrimp tanks, and in some samples of Artemia biomass.
Early Mortality Syndrome has devastated farmed shrimp in Asia and Latin America. With better understanding of the pathogen and the development and improvement of novel strategies, shrimp farmers are now able to better manage the disease.
Increased attention to nutrient digestibility and gut health are two important focus areas for technological development of manufactured feeds in the aquaculture industry. Both laboratory and field studies have demonstrated the potential benefits for aquaculture productivity and the economics of specific feed additives developed to stimulate the establishment of a healthy gut microflora.
Salmon farmers, using emerging technologies, are exploring new methods of sea lice mitigation in an effort to overcome one of the industry’s most persistent problems. New chemical-free innovations show an industry eager to adapt and adopt environmentally safe practices.
Piscirickettsia salmonis, or P. sal, is a persistent pathogen in the waters off Chile, causing millions of dollars of damage to the nation’s massive aquaculture industry. A university researcher 6,000 miles to the north hopes to provide insight that leads to the development of an effective vaccine.
In analyzing the plasmid sequence from the whole genome sequences of AHPND V. parahaemolyticus (V.p) isolates, researchers identified a clear geographical variation within the plasmid, and developed PCR methods to characterize AHPND V.p isolates as either Mexico-type or Southeast Asia-type.