—The effect of water temperature on the efficacy of hydrogen peroxide (H2O2) as a disinfectant for channel catfish Ictalurus punctatus eggs was examined at 248C and 288C. Eggs at each temperature were treated with H2O2 at 0, 100, 250, 500, or 1,000 mg/L as a daily 15-min bath. Mean hatching success at 248C was greatest (P . 0.05) for eggs treated with 250 and 500 mg/L H2O2, hatching success ten...

The objective of the present study was to research the effect of feeding laying hens fish oil-supplemented diets to produce n-3-enriched eggs on their ovarian follicular development, serum lipid peroxidation, antioxidative status and immune response. A total of 105 white Bovens hens at 24 weeks of age were housed in cages in an open-sided building under a 16 h light : 8 h dark lighting schedule...

The Cyprinus carpio koi fish is a freshwater ornamental that excellent because it has beautiful and bright colour. This study aimed to determine the best substrate for attachment of C. eggs success rate hatching eggs. method used in this experimental with description analysis. treatments were 4 types substrates, P1 (raffia), P2 (brush), P3 (ijuk), P4 (Hydrilla). results obtained highest fungal ...

The author details the connection between disease outbreaks in salmonid fish and imports of salmonid eggs into Japan since the 1950s. The following diseases and species are involved: -infectious pancreatic necrosis in rainbow trout (Oncorhynchus mykiss) -infectious haematopoietic necrosis in sockeye ( of 'kokanee') salmon (O. nerka) and masu salmon (O. masu) -cold water disease, erythrocyte inc...

To the Editor: I agree with Kuratko that there is a need for tailored food frequency questionnaires (FFQ), particularly for nutrients that have limited food sources, such as long chain ω-3 polyunsaturated fatty acids (LC ω-3 PUFA). Fish are the best food source of LC ω-3 PUFA, and oily fish such as sardines and Atlantic salmon contain approximately 10 times more LC ω-3 PUFA than lean fish, such...

The effect of increased aluminium concentration on the hatchability and survival Lamproglena clariae is unknown. During October 2019 2020, infected C. gariepinus were collected from Vaal River transferred to a controlled aquarium room. Parasite infection was established acclimated gariepinus. Adult female parasites (F2 F3 generation) live fish inspected for egg strings. Viable strings removed, ...

The equilibrium of dissociated dislocations is discussed in terms of intrinsic material properties such as the ideal stacking fault energy (ideal SFE) and the stacking fault (SF) strain. The ideal SFE is de® ned as the energy per unit area of an in® nitely extendedSF in an ideal in® nite crystal. The e€ ective SFE is de® ned as the energy per unit area of a terminated SF. The terminated SF is a...

For successful development of aquaculture, fish farms have to be provided by effective means and methods prevent treat diseases fish. Many drugs are limited for using in so the influence each particular drug or chemical substance on should investigated carefully. Effectiveness solutions suppressing growth saprolegnium micromycetes egg membranes other tissues sturgeon embryos during their incuba...

Aim The few fish species able to reproduce across wide osmotic ranges either plastically acclimate sperm performance to, or are locally adapted different salinities. invasive round goby (Neogobius melanostomus) is spreading in Eurasia and the Americas, into both fresh brackish water. We aim understand if reproduction salinities affected by an ability acclimate. Location Brackish freshwater syst...