Comparative genomics is a powerful tool to transfer genomic information from model species to related nonmodel species. Yu Zhang et al, Auburn University, chose catfish linkage group 8, which was found to contain microsatellite markers associated with the tole…
The yellow coloration in catfish fillets caused by carotenoids does not affect flavor, but many consumers see the yellowish fillets as inferior. Taken from the Global Aquaculture Advocate, a Global Aquaculture Alliance publication.
Hydroferrate fluid, MRN-100, an iron-based compound derived from bivalent and trivalent ferrates, is a potent antioxidant compound. Mamdooh GHONEUM, Charles Drew University of Medicine and Science, US, et al examined the protective effect of MRN-100 against ga…
For some years cobia has been thought of as a fish with tremendous potential for marine aquaculture. According to a Taiwanese research paper there is the potential to farm one million tonnes of the fast-growing tropical species annually around the world, write…
With little genetic information available on Catla carp, T.K.Mohapatra et, West Bengal University of Animal and Fishery Sciences, have carried out a study to evaluate the genetic variation and phylogenetic relationship among the two different stocks of Catla c…
Digestion is described as the mechanical and chemical breakdown of food into metabolisable parts which can be used by the organism. In monogastric animals, including a wide variety of different fish species (ranging for instance from Salmon and trout via tilap…
Lab studies with channel catfish and rainbow trout have found that phytogenic feed additives can help improve weight gain, feed conversion and immunity to disease. A pond study in Mississippi, USA, by Brian C. Peterson, USDA, et al compared the performance of …
Helcio Luis de Almeida Marques, Fishery Institute of So Paulo State Agricultural Department, et al, conducted research to improve the uptake of seed in artificial collectors and optimize the amount of seed used in mussel farming. Taken from the Global Aquacult…
In the eastern Gulf of Mexico, off the coast of Florida, grey snapper, was found to be infected with the myxozoan parasite Sphaerospora motemarini. In order to better understand the influence this specific myxozoan has on its host, Astrid S. Holzer, Institute …
Benzocaine, 2-phenoxyethanol and MS-222 were tested as anaesthetics for several handling procedures with spotted rose snapper broodstock. Significant differences in time for induction and recovery were found with specific doses, as well as a direct correlation…
Canada has everything needed to fill a major share of the gap in the worlds supply of food. Yet despite the scale and scope of the opportunity, Canada is failing to take advantage of its resources, writes Brian Lee Crowley, managing director of the Macdonald-L…
Frank A. Chapman and Joel P. Van Eenennaam, in this University of Florida Publication, describe the standard method and tools for determining the sex of sturgeon by direct examination of the gonad using a minimally invasive surgical procedure.
F.F. Khalil, Ahmed Ismail Mehrim and Montaha E.M. Hassan, Al-Mansoura University, Egypt, have evaluated the effects of graded levels of a new commercial probiotic, Hydroyeast Aquaculture, on both sexes of adult Nile tilapia. The probiotic was found to be usefu…
From both nutritionist and aquaculturist points of view, the aim is to sustainably produce aquatic food with superior sensory properties and high cardioprotective properties. The reason is that although preventable, cardiovascular diseases (CVDs) remain the to…
Few would dispute that the emergence of chilled and frozen food technologies in the last century was a major advance for modern society, transforming all our lives and bringing convenience and choice. In Europe today, consumption of chilled and frozen foods is…
In an indoor feeding trial of Nile tilapia fish fry, A.M. Abdelhamid, Al-Mansourah University, Egypt and A.A.A. Soliman, National Institute of Oceanography and Fisheries, Egypt found that guava tree leaves meal (GTLM) and camphor tree leaves meal (CTLM) both h…
NAMIBIA - The name is too long, President Hifikepunye Pohamba joked yesterday, on the decision to rename Unam's Henties Bay Marine and Coastal Resources Research Centre after his predecessor, Sam Nujoma.
But, he added, he supported the decision.
The Presiden…
Application of feeds in aquaculture can increase both production and profits considerably. Dr Seshaiah V. Pamulapati and Prakash Chandra Behera, PVS Group, India, discuss how trace minerals are having greater role in shrimp nutrition along with other minerals …
The Gram positive bacteria Streptococcus agalactiae (GBS) is a cause of severe epidemics in fish farms. To decipher the genetic basis for the emergence of these highly virulent GBS strains and of their adaptation to fish, Isabelle Rosinski-Chupin et al have an…
The ability to produce physiologically critical LC-PUFA from dietary fatty acids differs greatly among teleost species, and is dependent on the possession and expression of fatty acyl desaturase and elongase genes. Atlantic salmon, as a result of a recently du…
Research by Nelson Pea Navarro of the University of Costa Rica (UCR), has showed that some natural products can be substitutes for antibiotics in disease control of farmed shrimp. These natural alternatives can also increase production and maximise profits and…
David D. Kuhn et al Viginia Tech, have evaluated oysters cultured in a recirculating aquaculture system with zero water exchange for several months. Survival rates exceeded 99 per cent, and the oysters had growth comparable to or higher than oysters of similar…
Proper management of broodstock nutrition encompasses providing the right amounts of the proper specialised nutrients during the right developmental stages, writes Scott Snyder, Animal Nutritionist, and Thomas R. Zeigler, Senior Technical Advisor, Zeigler Bros…
Many believe commercial fisheries in Alaska, USA, are sustainability success stories, but ongoing socioeconomic problems across the state raise questions about how this sustainability is being defined andevaluated. Sustainable management of marine fisheries is…
A scientific team of the University of Barcelona have applied a new diagnostic tool to evaluate the health status of Iberian native fish species and the ecological status of aquatic ecosystems. The new non-lethal diagnostic tool, based on the analysis of haema…
This factsheet by the Southern Regional Aquaculture Center (SRAC) gives information on what feeds and feed ingredients should be used for channel catfish.
In a report from FAO entitled 'Edible insects: Future prospects for food and feed security', the potential is explored of using insects as a source of protein and other nutrients in dies for poultry and farmed fish.
Imagine having a daylong Thanksgiving feast every day for a month, then, only paupers rations the rest of the year. University of Washington researchers have discovered Dolly Varden, a kind of trout, eating just that way in Alaskas Chignik Lake watershed.
Excessive use of antibiotics can create resistance in aquatic pathogens and may result in residues that can harm the health of animals and humans. Organic acids provide a more sustainable alternative to routine use of antibiotics. A study by Gunhyun Park, Puky…
The gross value of Australias fisheries production is forecast to rise by one per cent to $2.4billion in 201213. The real value of Australian fisheries production declined significantly over the past decade, attributable to a decrease in the value of productio…
Scientists of Friedrich Schiller University Jena and Jena University Hospital have decoded the antihypertensive impact of omega-3 fatty acids on a systemic level and they have also described the underlying molecular mechanisms for the first time.
For a variety of reasons, many humans choose to adopt children. More surprisingly, adoption is fairly widespread in the animal kingdom, even though it would seem to counteract the basic premise of Darwins theory of evolution, which suggests that animals should…
Growth-enhancing transgenic biotechnologies have attracted considerable interest from the global aquaculture industry, particularly with regard to Atlantic salmon. However, similar to domesticated strains, concerns have been raised regarding the ecological and…
The aquaculture industry has grown dramatically, and plays an important role in the worlds food supply chain. Antimicrobial resistance in bacteria associated with food animals receives much attention, and drug use in aquaculture is also an important issue.
The rapid rise and growth of finfish and crustacean aquaculture has been due, in part, to the availability and on-farm provision of feed inputs within the major producing countries. If the aquaculture sector is to maintain its current average growth rate of 8 …
Commercial diets for channel catfish (Ictalurus punctatus) are typically composed of protein and energy sources of plant origin supplemented with lysine, vitamins, and minerals. A small amount of animal protein may be included. The predominant protein source i…
The emergence of epizootic shell disease in American lobsters Homarus americanus in the southern New England area, USA, has presented many new challenges to understanding the interface between disease and fisheries management. This paper from Kathleen M. Castr…
The high value of fresh tuna is largely attributed to the red colour and firm but tender texture of the thin pieces of raw flesh served as sushi or sashimi. A range of factors has been reported to affect the colour and visual appearance of the tuna flesh, alon…
Each year billions of animals make annual migrations to escape adverse environmental conditions. Migration is a spectacular and important biological phenomenon, but studying what drives animals to make these arduous journeys is extremely difficult. Food and cl…
There has been increasing interest in growing hybrid catfish (female channel catfish Ictalurus punctatus male blue catfish I. furcatus) in Mississippi and the Southeastern region of the United States. Data presented in this report evaluate dietary protein leve…
