Ring tests compare PCR results from diagnostic laboratories
The University of Arizona’s Aquaculture Pathology Laboratory oversees ring tests for a group of shrimp diagnostic laboratories in 10 countries.
Testing finds resistance to WSSV in shrimp from Panamanian breeding program
In a challenge test under controlled conditions using a severe strain of the virus, resistance to WSSV was shown in shrimp supplied by the Camaronera de Coclé, S.A. L. vannamei genetics program.
Extruder design changes increase production capacity for small-diameter feeds
The authors designed changes for single- and twin-screw extruders that streamlined the extrusion process to achieve higher output rates for small-diameter aquafeeds.
Botanical extracts improve productivity of shrimp, pangasius
In a study with pangasius, dietary administration of a blend of botanical extracts improved performance, reducing intensity of gill parasite infestation.
Tilapia production using biofloc technology
Biofloc systems enable more intensive tilapia production. The fish adapt to the conditions within biofloc systems and grow well by utilizing the bioflocs as a feed source.
Spirulina meal, feeding attractant spare fishmeal in white shrimp diets
In a 10-week study of nursery-reared Pacific white shrimp performance, the inclusion of Spirulina meal allowed reduction of fishmeal up to 25 percent with no detrimental effect on shrimp growth performance.
New procedure controls TSV in white shrimp
The authors have established a procedure to reduce the impacts of Taura Syndrome Virus in the culture of Pacific white shrimp. The procedure focuses on avoiding the molting process of shrimp by limiting culture conditions.
Waddell Mariculture Center continues research on biofloc-based shrimp culture
Waddell Mariculture Center operates a commercial-scale prototype raceway utilizing minimal water exchange and biofloc culture to develop protocols for the indoor growout of Pacific white shrimp.
Establishing nitrifying bacteria in super-intensive biofloc shrimp production
In biofloc production systems, ammonia-oxidizing bacteria process ammonia to nitrite, which provides substrate for nitrite-oxidizing bacteria that process nitrite to relatively non-toxic nitrate.
Red hogweed fights WSSV, promotes growth in tiger shrimp
A study carried out with the herb punarnava showed that it has antiviral properties in resisting WSSV infection and holds potential to promote growth in tiger shrimp. Increased survival was related to higher dosages.
Statistical modeling of field data can aid shrimp grow-out operations
In order to monitor and compare the performance levels of shrimp, statistical modeling of comprehensive field data collection from many commercial shrimp operations.
Do probiotics work in aquaculture?
Probiotics administered in feeds provide competitive exclusion of pathogenic bacteria, create conditions unfavorable for pathogens and modulate intestinal immune responses.
Alphavirus replicon particles potential method for WSSV vaccination of white shrimp
A study demonstrated that VP19 and VP28 white spot syndrome virus envelope proteins expressed by replicon particles provided protection against mortality due to WSSV in shrimp.
Disease risk evaluation
Assessing disease risk at an aquaculture facility allows the anticipation of possible outbreaks and subsequent production losses. It can also help to identify weaknesses of the production system.
Biosecurity principles for sustainable production using SPF shrimp
Basic components of biosecurity include knowledge of diseases, adequate detection methods and the use of “clean” shrimp stocks.
International coalition breaks cobia fingerling production bottleneck
Fingerling production has long been a bottleneck in the advancement of cobia culture. A coalition has validated intensive larviculture production systems and protocols that deliver 35 percent survival.