نتایج جستجو برای: freshwater catfish
تعداد نتایج: 33377 فیلتر نتایج به سال:
Many freshwater fish farming activities are carried out to meet the increasing demand for consumption. One commodity with high market is African catfish (Clarias gariepinus). The success of cultivation maintenance broodstock very influential on eggs production. It necessary pay attention nutrients in feed during cultivation. This study aims determine effect adding soybean oil hatching at Region...
Kampar Regency is one of the regencies with a quit spacious aquaculture area pisciculture business activities as livelihoods most people. Freshwater fish farming in includes karamba or ponds. The request for freshwater production Riau province also quite high, such catfish, carp, tilapia, pomfret and baung daily consumption industrial needs. high regency cannot always be fulfielld. This due to ...
Lactobacilli are Gram-positive and catalase negative rods commonly found in lactic acid fermented foods and in the gastrointestinal tract of mammals and birds. Few studies have described lactobacilli in freshwater fish. We analysed the presence of lactobacilli in the intestines of young and adult freshwater fish inhabiting a river environment and from fish reared in an aquaculture unit with a w...
Bacillus strains isolated from soil or channel catfish intestine were screened for their antagonism against Edwardsiella ictaluri and Aeromonas hydrophila, the causative agents of enteric septicemia of catfish (ESC) and motile aeromonad septicaemia (MAS), respectively. Twenty one strains were selected and their antagonistic activity against other aquatic pathogens was also tested. Each of the t...
UNLABELLED Since 2009, catfish farming in the southeastern United States has been severely impacted by a highly virulent and clonal population of Aeromonas hydrophila causing motile Aeromonas septicemia (MAS) in catfish. The possible origin of this newly emerged highly virulent A. hydrophila strain is unknown. In this study, we show using whole-genome sequencing and comparative genomics that A....
Introduction Grass carp (Ctenopharyngodon idellus) is an important species of freshwater fish in China. It accounts for about 20% of the total freshwater fishery production. Hemorrhagic disease of grass carp is the most serious infectious disease of grass carp and causes significant losses of fingerlings during rearing. Survival to market size is less than 20% if this disease occurs. Hemorrhagi...
We investigated aquaculture production of Asian tiger shrimp, whiteleg shrimp, giant river prawn, tilapia, and pangasius catfish in Bangladesh, China, Thailand, and Vietnam by using life cycle assessments (LCAs), with the purpose of evaluating the comparative eco-efficiency of producing different aquatic food products. Our starting hypothesis was that different production systems are associated...
Dieldrin accumulation and elimination in muscle tissue of channel catfish (Ictalurus punctatus) from water and food was determined in the laboratory. Twenty-eight-day exposure of fish 150-225 mm and 350-400 mm long to 75 parts per trillion (ng/liter) dieldrin resulted in the larger catfish consistently accumulating more dieldrin than the smaller fish. After 28 days of elimination, dieldrin leve...
Heat tolerance is a complex and economically important trait for catfish genetic breeding programs. With global climate change, it is becoming an increasingly important trait. To better understand the molecular basis of heat stress, a genome-wide association study (GWAS) was carried out using the 250 K catfish SNP array with interspecific backcross progenies, which derived from crossing female ...
The gonadotropin-releasing hormone (GnRH) receptor in catfish differs from its mammalian counterparts in showing a very low affinity for the hypothalamic GnRH form [i.e. catfish GnRH (cfGnRH)] and a very high affinity for the highly conserved mesencephalic GnRH, chicken GnRH-II (cGnRH-II). In the present study we investigated the molecular interactions between ligand and receptor involved in de...
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