137 results match your criteria: "Thad Cochran National Warmwater Aquaculture Center[Affiliation]"

Efficacy determination of a disinfectant against channel catfish virus by in vitro and in vivo methods.

In Vitro Cell Dev Biol Anim

December 2024

Delta Research and Extension Center, Thad Cochran National Warmwater Aquaculture Center, Mississippi State University, Stoneville, MS-38776, USA.

Channel catfish virus (CCV) poses a significant threat to catfish culture. Lack of effective vaccines and antiviral treatments necessitates effective disinfection strategies to mitigate its spread. In vitro trials indicated the virus to be inactivated at high temperatures, but was infectious at 40°C.

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Edwardsiella piscicida is an emerging bacterial pathogen and the aetiological agent of edwardsiellosis among cultured and wild fish species globally. The increased frequency of outbreaks of this Gram-negative, facultative intracellular pathogen pose not only a threat to the aquaculture industry but also a possible foodborne/waterborne public health risk due to the ill-defined zoonotic potential. Thus, understanding the role of temperature on the virulence of this emerging pathogen is essential for comprehending the pathogenesis of piscine edwardsiellosis in the context of current warming trends associated with climate change, as well as providing insight into its zoonotic potential.

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Tad pili contribute to the virulence and biofilm formation of virulent .

Front Cell Infect Microbiol

August 2024

College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, United States.

Article Synopsis
  • Type IV pili (T4P) are important structures in bacteria that assist with processes like sticking to surfaces and forming biofilms.
  • The study focuses on a unique Type IV pilus called tight adherence (Tad) in a specific bacterium (vAh) and explores its impact on the bacterium's ability to cause disease.
  • Results show that while removing the Tad operon didn't affect the bacteria's growth, it significantly reduced their ability to infect catfish and diminished biofilm formation, underscoring the Tad operon's crucial role in pathogenicity.
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Ictalurid herpesvirus 1 (IcHV1) is the most significant viral agent in U.S. catfish aquaculture.

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Dietary supplementation of mineral nanoparticles for channel catfish (Ictalurus punctatus).

Fish Physiol Biochem

December 2024

Thad Cochran National Warmwater Aquaculture Center, Stoneville, MS Agriculture and Forestry Experiment Station, Mississippi State University, Stoneville, MS, 38776, USA.

This study evaluated the supplementation of iron and copper nanoparticles in channel catfish diets and their influences on growth and health. A comparative feeding trial was carried out for 9 weeks to evaluate combinations of iron and copper nanoparticles: only iron nanoparticles (IronNP), only copper nanoparticles (CopperNP), CopperNP + IronNP, and a control diet supplemented with inorganic iron and copper (FeSO and CuSO). After a 9-week feeding trial, growth performance, hematological parameters, whole-body proximate composition, and intestinal microbiota were evaluated, and fish were subjected to a bacterial challenge against Edwardsiella ictaluri to evaluate the contribution of the experimental treatments to fish health status.

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The production of silage using fish viscera can be carried out with straightforward methods and permits the exploitation of nutrients that are usually discarded. This process fosters the concept of circular aquaculture. The aim of this study was to evaluate the inclusion of increasing levels of fish viscera silage (VS) on the physical quality of the feed pellets and their effects on their growth performance, health parameters and on economic indices when the experimental extruded feed was offered to tambaqui.

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Aquaculture is a rapidly growing food production technology, but there are significant concerns related to its environmental impact and adverse social effects. We examine aquaculture outcomes in a three pillars of sustainability framework by analyzing data collected using the Aquaculture Performance Indicators. Using this approach, comparable data has been collected for 57 aquaculture systems worldwide on 88 metrics that measure social, economic, or environmental outcomes.

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Proliferative gill disease (PGD), caused by the myxozoan , has been the most notorious parasitic gill disease in the US catfish aquaculture industry. In 2019, an unusual gill disease caused by massive burdens of another myxozoan, , was described in channel () × blue () hybrid catfish. Targeted metagenomic sequencing and hybridization (ISH) were used to differentiate these conditions by comparing myxozoan communities involved in lesion development and disease pathogenesis between massive infections and PGD cases.

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Review of environmental challenges in the Bangladesh aquaculture industry.

Environ Sci Pollut Res Int

February 2024

Department of Accounting and Information Systems, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh.

The increasing population and plateaued capture fishery landings have led to increasing demand for aquaculture products. However, environmental challenges are critical barriers to the sustainable development of aquaculture in developing countries. This review critically evaluates the environmental barriers facing aquaculture development in Bangladesh while laying out a roadmap for future development and spatial planning.

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Enteric septicemia of catfish (ESC), caused by the gram-negative enteric bacteria Edwardsiella ictaluri, is a significant threat to catfish aquaculture in the southeastern United States. Antibiotic intervention can reduce mortality; however, antibiotic use results in an imbalance, or dysbiosis, of the gut microbiota, which may increase susceptibility of otherwise healthy fish to enteric infections. Herein, recovery of the intestinal microbiota and survivability of channel catfish in response to ESC challenge was evaluated following a 10-day course of florfenicol and subsequent probiotic or prebiotic supplementation.

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To prevent catfish idiopathic anaemia, diets fortified with iron have been adopted as a regular practice on commercial catfish farms to promote erythropoiesis. However, the effects of prolonged exposure of excess dietary iron on production performance and disease resistance for hybrid catfish (Ictalurus punctatus × I. furcatus) remains unknown.

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Objective: Proliferative gill disease (PGD) in Channel Catfish Ictalurus punctatus and hybrid catfish (Channel Catfish × Blue Catfish I. furcatus) is attributed to the myxozoan Henneguya ictaluri. Despite evidence of decreased H.

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Flavobacterium covae is the predominant species of columnaris-causing bacteria impacting the Channel Catfish industry in the southeastern United States.

J Aquat Anim Health

March 2024

Thad Cochran National Warmwater Aquaculture Center, Aquatic Research and Diagnostic Laboratory, Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Stoneville, Mississippi, USA.

Objective: Columnaris disease is a leading cause of disease-related losses in the catfish industry of the southeastern United States. The term "columnaris-causing bacteria" (CCB) has been coined in reference to the four described species that cause columnaris disease: Flavobacterium columnare, F. covae, F.

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Commercial aquaculture production of channel catfish (Ictalurus punctatus) occurs in shallow ponds with daily cycling of dissolved oxygen concentration ranging from supersaturation to severe hypoxia. Once daily minimum dissolved oxygen concentration falls below 3.0 mg O/L, channel catfish have a reduced appetite, leading to reduced growth rates.

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Edwardsiella tarda Isolated from a Kidney Mass in a Common Loon (Gavia immer).

J Wildl Dis

October 2023

Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Stoneville, Mississippi 38776, USA.

A Common Loon (Gavia immer) was found recumbent at Island Beach State Park, New Jersey, US, and euthanized. Necropsy revealed a caseous mass in the kidney, from which bacteria were isolated and phenotypically and molecularly identified as Edwardsiella tarda.

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This study investigated the glycinin and β-conglycinin induced intestinal damage and α-ketoglutarate alleviating the damage of glycinin and β-conglycinin in intestine. Carp were randomly divided into six dietary groups: containing fish meal (FM) as the protein source, soybean meal (SM), glycinin (FMG), β-conglycinin (FMc), glycinin+1.0% α-ketoglutarate (AKG) (FMGA), β-conglycinin+1.

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The Infection Dynamics of Experimental and Coinfection in Channel Catfish ().

Pathogens

March 2023

School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, AL 36849, USA.

and are pervasive bacterial pathogens associated with significant losses in catfish aquaculture. Bacterial coinfections have the potential to increase outbreak severity and can worsen on-farm mortality. A preliminary assessment of in vivo bacterial coinfection with (S97-773) and (ALG-00-530) was conducted using juvenile channel catfish ().

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The global COVID-19 pandemic resulted in an unprecedented economic shock in current times. Previous literature on consumer shopping behaviors during economic downturns is limited, and studies specific to seafood focused primarily on supply-side shocks. A national survey was conducted using an online platform from February 22 to April 6, 2021 that targeted 100 seafood consumers in each of 20 market areas across the U.

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Effects of the Replacement of Dietary Fish Meal with Poultry By-Product Meal on Growth and Intestinal Health of Chinese Soft-Shelled Turtle ().

Animals (Basel)

February 2023

Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou 313000, China.

To investigate the effect of poultry by-product meal (PBM) replacing fish meal on the growth and intestinal health of Chinese soft-shelled turtle . Four experimental diets were prepared. Fish meal was replaced by 0 (control group, PBM0), 5% (PBM5), 10% (PBM10), and 15% (PBM15) PBM.

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In the present study, the potential synergism between beneficial lactic acid bacteria () contained in a probiotic and a mixture of fermentable complex carbohydrates and autolyzed brewer's yeast (or prebiotic) were explored in red drum. Four experimental diets were formulated from practical ingredients, and the basal diet was supplemented with either probiotic, prebiotic, or both supplements. Red drum juveniles (~5.

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