Rainbow Trout Articles & Analysis
20 articles found
Characteristics, structure and resources of the sector Summary South Africa has suitable environmental conditions for aquaculture development and opportunities for commercial production of various cultured species. The local aquaculture sector has performed below its potential and remains a minor contributor to national fishery products and the country’s GDP. However, more focus is being ...
Skretting, the global aquafeed division of Nutreco, provides innovative and sustainable nutritional solutions and services to the aquaculture industry. This global player has production facilities in 18 countries on five continents. In 2022, the company produced and supplied more than 3 million tons of high-quality feed for more than 60 species of fish and crustaceans. For Skretting, R&D is ...
ByBESTMIX
On the Peruvian side, local governments created a plan to support the production of rainbow trout to feed the region’s growing population. So far, two hundred local aquaculture operations have set up small farms in the lake, producing about 32,000 tons of fish per year. ...
Several species of fish, including Rainbow trout (Oncorhynchus mykiss), Atlantic salmon (Salmo salar), tilapia (Oreochromis species), channel catfish (Ictalurus punctatus) and shrimp, including both tiger (Penaeus monodon) and white shrimp (P. vannamei) are being produced at levels that dwarf what is available through commercial fishing with no indication that ...
Krill has a low content of ash making ideal for fresh water feeds. It is lower in content of phosphorus than other marine based meals such as shrimp or fish meal. Its calcium/phosphorus ratio is near to 1,5:1 which favors the absorption of both minerals, and it is significantly lower compared to fish or crustacean meals (3 or ...
Chitin is component of several crustacean and insect carapace. It is an energy source for several species which can degrade chitin through special enzymes. Disease control, profilaxis and eradication are based on the use of vaccines and chemiotherapeutical substances. But there are a number of pathologies that have no known cure. There are for example, the case of Piscirichettsiosis in Chilean ...
Zhengzhou Fusmar is a professional fish feed extruder manufacturer. Rainbow trout could catch larger numbers of pellets in a single feed portion as temperatures increased from 5 to 15°C under laboratory conditions; this change is likely mediated by changes in the fish’s activity at different temperatures. The feeding rate of brown ...
Seven years ago, Troutlodge, the world leading supplier of rainbow trout eggs, and the USDA formed a long term collaboration to help combat this worldwide problem. ...
Scientists point out that today’s selective breeding research programs, built on genomics and other tools of modern biology, also have turbocharged fish development. “Some strains of rainbow trout, which have been selected for fast growth for 150 years, grow incredibly fast compared to wild-type fish,” Devlin says. ...
ByEnsia
The present study investigates the relationship between chemical substrate concentration and in vitro biotransformation rate of 4 environmental contaminants (9‐methylanthracene, pyrene, chrysene, and benzo[a]pyrene) in rainbow trout (Oncorhynchus mykiss) liver S9 fractions and methods to determine maximum first‐order biotransformation rate constants. ...
Rainbow trout (Oncorhynchus mykiss) confined to respirometer‐metabolism chambers were dosed with perfluorooctane sulfonate (PFOS) by intra‐arterial injection and sampled to obtain concentration time‐course data for plasma, and either urine or expired water. ...
We performed a series of studies using equitoxic mixtures of cadmium, copper, and zinc to 2 aquatic organisms, rainbow trout (Oncorhynchus mykiss; RBT) and the waterflea, Ceriodaphnia dubia. ...
The purpose of this study was to employ a comparative approach to determine whether rainbow trout biotransform pharmaceuticals known to be substrates for specific human CYPs. ...
The bioconcentration of DCF in rainbow trout was measured in a separate study according to OECD test guideline 305. The bioconcentration factor (BCF) in rainbow trout remained below 10, demonstrating no relevant bioconcentration of DCF in fish. In the rainbow trout ELS test, the no observed ...
Approximately 2% of all measured concentrations exceeded the 7.6 µg/L LC50 acute toxicity level for rainbow trout. One‐twentieth the LC50 concentration, equivalent to the level of concern (0.38 µg/L) for endangered species, was exceeded 31% of the time during the present study. ...
To examine the behavior of the estrogenic biomarker vitellogenin (VTG) under the combined impact of estrogens and pathogens, parasite‐infected or noninfected rainbow trout were exposed to two doses of 17β‐estradiol (E2). Infected and E2‐exposed fish showed significantly lower hepatic VTG mRNA levels than healthy fish. ...
The start-up and activation of a nitrifying rotating biological contactor (RBC) and its performance inside a culture tank of rainbow trout were studied. First, in a lab-scale operation, the system was fed with a synthetic medium containing a high ammonia concentration (567 mg NH4+-N L−1) and operated at a high hydraulic retention time (HRT) (6.5 days) to minimize ...
At Kontiolahti Fish farm the cuttings of salmon, trout and rainbow trout are cultivated to juveniles. Spawn is hatched and the juveniles of 0+ age-class are farmed inside. ...
After reviewing the derivations and assumptions of the algorithms that have been used to describe chemical dietary uptake of fish, their application, as implemented in 16 published bioaccumulation models, is analyzed for largemouth bass (Micropterus salmoides), walleye (Sander vitreus = Stizostedion vitreum), and rainbow trout (Oncorhynchus mykiss) that ...
Abstract As part of a broader investigation into the effects of creosote treatments on the aquatic biota in pond microcosms, we examined the possible implications for vitellogenin (Vtg) production in Oncorhynchus mykiss [rainbow trout (RT)]. Vtg is the precursor of egg yolk protein and has emerged as a useful biomarker of exposure to estrogenic substances. ...