Channel catfish Ictalurus punctatus fingerlings were fed purified diets supplemented with iron at levels of 0, 20, 60, and 180 mgkg from iron sulfate (FeS) or 5, 10, 20, 60, and 180 mgkg from iron methionine (FeM) in triplicate tanks for 8 wk. Fish were then divided into two groups and subjected to different assays to measure disease resistance and individual immune functions. Representative fi...

A study was carried out to evaluate the probiotic activity of Bacillus subtilis G1 isolated from fermented pickles in growth performance and disease resistance of Hemibagrus nemurus fingerlings at Universiti Putra Malaysia. The probiotic was mixed in feed at doses of 0 (C, control), 3 x 109 (T1) 3 x 107 (T2) and 3 x 105 (T3) cfu g-1 and fed to the catfish fingerlings for nine weeks. Results sho...

Background The objective of the present study was to evaluate the growth performance and feed utilization of African catfish fed a commercial diet and Clarias gariepinus reared in the biofloc system enhanced with probiotic. Methods The treatment was the frequency of probiotic application into the cultured system, namely, 5-day interval, 10-day interval, and 15-day interval for 60 days of experi...

Background: Channel catfish, Ictalurus punctatus, is the leading species in North American aquaculture. Genetic improvement of catfish is performed through selective breeding, and genomic tools will help improve selection efficiency. A physical map is needed to integrate the genetic map with the karyotype and to support fine mapping of phenotypic trait alleles such as Quantitative Trait Loci (Q...

The results of this project have lead to several improvements in the costeffectiveness of diet formulations and feeding schedules for channel catfish. Advancements in these areas will significantly improve production economics by reducing diet costs and increasing the eff iciency of feed utilization. The benefits obtained from these advancements will be substantial because over one-half of the ...

Catfish of Anzali wetland has been focused economically and commercially. It also meets the religious Minorities needs to fish meat. So, investigation of its health in the wetland is important. This study aimed to investigate the concentration of heavy metals such as cadmium, Nickle, Zinc and lead in muscle tissues of Catfish in three stations (west, central and east) of Anzali wetland in 2012....

-FO~ the incised, sand-bed streams of northcentral Mississippi, USA, fish predation is one plausible mechanism to explain both relatively low crayfish densities and differences in stream size occupied by various native crayfishes. I conducted two mesocosm experiments to test effects of a fish predator (channel catfish, Ictalurus punctahls) on the survival and size structure of native crayfishes...

Feed represents the largest cost input in intensive catfish Ictalurus punctatus production. Daily feed rations are generally related to stocking densities, up to a point a t which high feeding rates begin to affect water quality. There has been no prior research to analyze the economic interactions between feeding and stocking rates. Econometric techniques were used to estimate a Just-Pope catf...