Asmaa N . Mohammed | Beni-Suef University (original) (raw)

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Papers by Asmaa N . Mohammed

Research paper thumbnail of Characterization of Coagulase Positive and Negative Staphylococci Recovered from Mastitic Cows and Buffaloes

Journal of Veterinary Medical Research

Research paper thumbnail of Antimicrobial Susceptibility Pattern of Newly Formulated Disinfectants Against Pathogenic Bacterial Contaminants in Different Veterinary Research Laboratories in Beni-Suef City, Egypt

Egyptian Journal of Veterinary Science, Jul 1, 2025

Research paper thumbnail of Potential Influence of Climate Change on the Occurrence and Distribution of Vector-Borne Diseases among Animal Populations

Egyptian Journal of Veterinary Sciences

Research paper thumbnail of Tracking of Resistant Salmonella Species in Poultry Farms: New Method of Control Using Essential Oils Nano- Emulsion Conjugated with Antimicrobial Agents

Tropical Animal Science Journal, 2021

Research paper thumbnail of The Influence of Harmful Greenhouse Gases (GHG) Emission In-Door of Broiler Chickens' System on Their Health: "Options of Prevention and Control

European Journal of Vascular and Endovascular Surgery, 2021

Research paper thumbnail of Environmental Monitoring of Zoonotic Fungal Infection in Broiler Chickens: Novel Approach to Control using Nano-fungicide Composite

Tropical Animal Science Journal, 2021

Research paper thumbnail of Current situation assessment of biosecurity measures of some poultry sectors and hatcheries in Egypt

Journal of Veterinary Medical Research, Dec 1, 2016

Research paper thumbnail of Mitigation of Air Gas Emission, and Litter Microbial Quality in Muscovy Duck Pens: The Effectiveness of adding Clinoptilolite Zeolite as a Litter Amendment

DOAJ (DOAJ: Directory of Open Access Journals), Oct 1, 2020

Research paper thumbnail of Impact of Seasonal Conditions on Quality and Pathogens Content of Milk in Friesian Cows

Asian-australasian Journal of Animal Sciences, Apr 22, 2016

Research paper thumbnail of Effect of seasonal variations on performance and parasitic infestation of cultured fish in Fayoum governorate

Journal of Veterinary Medical Research, Mar 1, 2010

Research paper thumbnail of Prevention of motile Aeromonas septicemia in Nile tilapia, Oreochromis niloticus, using thyme essential oil and its nano-emlusion

Aquaculture International, Jun 29, 2021

Nanotechnology has become an important tool for fish disease prevention and treatment. The curren... more Nanotechnology has become an important tool for fish disease prevention and treatment. The current study was carried out to evaluate the efficacy of dietary thyme essential oil (TEO) and its nano-emulsion (TEO-NE) for motile Aeromonas septicemia prevention (MAS) in Oreochromis niloticus after in vitro evaluation. Aeromonas hydrophila was isolated from naturally diseased Oreochromis niloticus and Clarias gariepinus showed signs of septicemia and congestion of internal organs. Prevalence of MAS among diseased O. niloticus and C. gariepinus was 86.9 and 44.4%, respectively. The obtained isolates were identified as Aeromonas hydrophila by molecular assay and found to be highly pathogenic as they contained hemolysin and cytotoxic enterotoxin virulence genes. Experimental infection and medial lethal concentration were performed and it was 1.5 × 104. TEO-NE was synthesized by ultrasonication and characterized by TEM, ATR-FTIR, and zeta potential. The antibacterial activity of TEO-NE was noticed at the least concentration during in vitro evaluation. TEO-NE succeeded in preventing MAS in dietary fed O. niloticus with no mortality compared to 10 and 80% O. niloticus groups fed TEO and positive control group, respectively. Dietary TEO-NE induced significant increase in IgM, IL-1β, and lysozyme. Liver and kidney functions were within the normal levels in groups fed TEO and TEO-NE.

Research paper thumbnail of Assessment of carbon nanotubes and silver nanoparticles loaded clays as adsorbents for removal of bacterial contaminants from water sources

Journal of Water and Health, Nov 25, 2016

Research paper thumbnail of Using some natural essential oils and their nano-emulsions for ammonia management, anti-stress and prevention of streptococcosis in Nile tilapia, Oreochromis niloticus

Aquaculture International

The current study aimed to investigate the efficacy of dietary thyme essential oil (TEO), Nigella... more The current study aimed to investigate the efficacy of dietary thyme essential oil (TEO), Nigella sativa essential oil (NSEO), thyme essential oil nano-emulsion (TEO-NE), and Nigella sativa essential oil nano-emulsion (NSEO-NE) in reducing total ammonia nitrogen (TAN), improving immune response, mitigating stress, and acting as anti-inflammatory agents as well as preventing streptococcosis infection in Oreochromis niloticus (O. niloticus). Fish (N = 330, 14 ± 2 g) were divided into 10 groups of 11 fish each, with three replicates in each group. The negative and positive controls were fed a control diet, while the third group was given 1% TEO. Moreover, the fourth group of fish was given 2% TEO. The fifth and sixth groups were fed 1% TEO-NE and 2% TEO-NE, respectively. The seventh, eighth, ninth, and tenth groups were fed 1% NSEO, 2% NSEO, 1% NSEO-NE, and 2% NSEO-NE, respectively. After dietary intake of TEO, NSEO, and their nano-emulsions for 28 days, the mean values of TAN levels i...

Research paper thumbnail of How Can Ammonia’s Hygienic Problems in Poultry Houses be Alleviated?

Egyptian Journal of Veterinary Sciences

Research paper thumbnail of Ecological study on antimicrobial-resistant zoonotic bacteria transmitted by flies in cattle farms

Parasitology Research, May 31, 2016

Research paper thumbnail of An alternative approach for controlling bacterial pathogens in liquid and solid poultry waste using Calcium hypochlorite Ca(OCl)2 disinfectant-based silver nanoparticles

Scientific Reports

Inappropriate handling of poultry waste from the beginning to the end of the production cycle cou... more Inappropriate handling of poultry waste from the beginning to the end of the production cycle could lead to health and environmental hazards. The purpose of this study was to assess the current state of poultry waste management practices as well as to evaluate the efficacy of disinfectants (VIRKON S, Quaternary ammonium compound (QAC), Calcium hypochlorite [Ca(OCl)2], and nanomaterials (nano-silver particles (Ag NPs), and Ca(OCl)2-Ag NPs composite) on pathogenic bacteria for use in the disinfection of waste collection areas within poultry operation systems. Two hundred and ten samples were gathered from variant waste types for isolation and identification of pathogenic bacteria. Then, the efficacy of some disinfectants against fifty strains of isolated bacteria was evaluated using a broth micro-dilution assay. Results showed the most predominant bacterial isolates from wastes were E. coli (33.69%), Salmonella spp. (26.09%), followed by K. pneumonae (15.22%) and L. monocytogenes (14....

Research paper thumbnail of Control of biofilm-producing Aeromonas bacteria in the water tanks and drinkers of broiler poultry farms using chitosan nanoparticle-based coating thyme oil

Iraqi Journal of Veterinary Sciences

Research paper thumbnail of Life Cycle Environmental Implications of Nanomanufacturing

The ELSI Handbook of Nanotechnology, 2020

Research paper thumbnail of Implementation of Novel Nanosilver Composites in Drinking Water Treatment

Polymer Nanocomposites Based on Silver Nanoparticles, 2021

Research paper thumbnail of The environmental surveillance system of NCOVID-19 and animal coronaviruses (TGEV and MHV) for mitigating the further spreading

Journal of Advanced Veterinary Research, 2020

Coronavirus disease 2019 (nCOVID-19) is a newly emerging disease first discovered in Wuhan city, ... more Coronavirus disease 2019 (nCOVID-19) is a newly emerging disease first discovered in Wuhan city, China, in December 2019 Currently, nCOVID-19 has become a global health concern causing severe respiratory tract infection besides animal coronaviruses includes transmissible gastroenteritis virus (TGEV) and mouse hepatitis virus (MHV) Implementing of surveillance system requires coordination and collaboration between the Centers for Disease Control and Prevention (CDC), local, and state public health authorities Outbreak surveillance can help to mitigate the further spreading of coronaviruses in the environment nCOVID-19 can persist on inanimate surfaces up to 9 days whilst animal coronaviruses (TGEV and MHV) can persist in the environment for ≥ 28 days at 4°C Effective surface disinfection may help to ensure an early containment and prevention of further viral spread Some biocidal agents effi-ciently inactivate coronavirus infectivity within minutes such as ethanol 70%, hydrogen peroxi...

Research paper thumbnail of Characterization of Coagulase Positive and Negative Staphylococci Recovered from Mastitic Cows and Buffaloes

Journal of Veterinary Medical Research

Research paper thumbnail of Antimicrobial Susceptibility Pattern of Newly Formulated Disinfectants Against Pathogenic Bacterial Contaminants in Different Veterinary Research Laboratories in Beni-Suef City, Egypt

Egyptian Journal of Veterinary Science, Jul 1, 2025

Research paper thumbnail of Potential Influence of Climate Change on the Occurrence and Distribution of Vector-Borne Diseases among Animal Populations

Egyptian Journal of Veterinary Sciences

Research paper thumbnail of Tracking of Resistant Salmonella Species in Poultry Farms: New Method of Control Using Essential Oils Nano- Emulsion Conjugated with Antimicrobial Agents

Tropical Animal Science Journal, 2021

Research paper thumbnail of The Influence of Harmful Greenhouse Gases (GHG) Emission In-Door of Broiler Chickens' System on Their Health: "Options of Prevention and Control

European Journal of Vascular and Endovascular Surgery, 2021

Research paper thumbnail of Environmental Monitoring of Zoonotic Fungal Infection in Broiler Chickens: Novel Approach to Control using Nano-fungicide Composite

Tropical Animal Science Journal, 2021

Research paper thumbnail of Current situation assessment of biosecurity measures of some poultry sectors and hatcheries in Egypt

Journal of Veterinary Medical Research, Dec 1, 2016

Research paper thumbnail of Mitigation of Air Gas Emission, and Litter Microbial Quality in Muscovy Duck Pens: The Effectiveness of adding Clinoptilolite Zeolite as a Litter Amendment

DOAJ (DOAJ: Directory of Open Access Journals), Oct 1, 2020

Research paper thumbnail of Impact of Seasonal Conditions on Quality and Pathogens Content of Milk in Friesian Cows

Asian-australasian Journal of Animal Sciences, Apr 22, 2016

Research paper thumbnail of Effect of seasonal variations on performance and parasitic infestation of cultured fish in Fayoum governorate

Journal of Veterinary Medical Research, Mar 1, 2010

Research paper thumbnail of Prevention of motile Aeromonas septicemia in Nile tilapia, Oreochromis niloticus, using thyme essential oil and its nano-emlusion

Aquaculture International, Jun 29, 2021

Nanotechnology has become an important tool for fish disease prevention and treatment. The curren... more Nanotechnology has become an important tool for fish disease prevention and treatment. The current study was carried out to evaluate the efficacy of dietary thyme essential oil (TEO) and its nano-emulsion (TEO-NE) for motile Aeromonas septicemia prevention (MAS) in Oreochromis niloticus after in vitro evaluation. Aeromonas hydrophila was isolated from naturally diseased Oreochromis niloticus and Clarias gariepinus showed signs of septicemia and congestion of internal organs. Prevalence of MAS among diseased O. niloticus and C. gariepinus was 86.9 and 44.4%, respectively. The obtained isolates were identified as Aeromonas hydrophila by molecular assay and found to be highly pathogenic as they contained hemolysin and cytotoxic enterotoxin virulence genes. Experimental infection and medial lethal concentration were performed and it was 1.5 × 104. TEO-NE was synthesized by ultrasonication and characterized by TEM, ATR-FTIR, and zeta potential. The antibacterial activity of TEO-NE was noticed at the least concentration during in vitro evaluation. TEO-NE succeeded in preventing MAS in dietary fed O. niloticus with no mortality compared to 10 and 80% O. niloticus groups fed TEO and positive control group, respectively. Dietary TEO-NE induced significant increase in IgM, IL-1β, and lysozyme. Liver and kidney functions were within the normal levels in groups fed TEO and TEO-NE.

Research paper thumbnail of Assessment of carbon nanotubes and silver nanoparticles loaded clays as adsorbents for removal of bacterial contaminants from water sources

Journal of Water and Health, Nov 25, 2016

Research paper thumbnail of Using some natural essential oils and their nano-emulsions for ammonia management, anti-stress and prevention of streptococcosis in Nile tilapia, Oreochromis niloticus

Aquaculture International

The current study aimed to investigate the efficacy of dietary thyme essential oil (TEO), Nigella... more The current study aimed to investigate the efficacy of dietary thyme essential oil (TEO), Nigella sativa essential oil (NSEO), thyme essential oil nano-emulsion (TEO-NE), and Nigella sativa essential oil nano-emulsion (NSEO-NE) in reducing total ammonia nitrogen (TAN), improving immune response, mitigating stress, and acting as anti-inflammatory agents as well as preventing streptococcosis infection in Oreochromis niloticus (O. niloticus). Fish (N = 330, 14 ± 2 g) were divided into 10 groups of 11 fish each, with three replicates in each group. The negative and positive controls were fed a control diet, while the third group was given 1% TEO. Moreover, the fourth group of fish was given 2% TEO. The fifth and sixth groups were fed 1% TEO-NE and 2% TEO-NE, respectively. The seventh, eighth, ninth, and tenth groups were fed 1% NSEO, 2% NSEO, 1% NSEO-NE, and 2% NSEO-NE, respectively. After dietary intake of TEO, NSEO, and their nano-emulsions for 28 days, the mean values of TAN levels i...

Research paper thumbnail of How Can Ammonia’s Hygienic Problems in Poultry Houses be Alleviated?

Egyptian Journal of Veterinary Sciences

Research paper thumbnail of Ecological study on antimicrobial-resistant zoonotic bacteria transmitted by flies in cattle farms

Parasitology Research, May 31, 2016

Research paper thumbnail of An alternative approach for controlling bacterial pathogens in liquid and solid poultry waste using Calcium hypochlorite Ca(OCl)2 disinfectant-based silver nanoparticles

Scientific Reports

Inappropriate handling of poultry waste from the beginning to the end of the production cycle cou... more Inappropriate handling of poultry waste from the beginning to the end of the production cycle could lead to health and environmental hazards. The purpose of this study was to assess the current state of poultry waste management practices as well as to evaluate the efficacy of disinfectants (VIRKON S, Quaternary ammonium compound (QAC), Calcium hypochlorite [Ca(OCl)2], and nanomaterials (nano-silver particles (Ag NPs), and Ca(OCl)2-Ag NPs composite) on pathogenic bacteria for use in the disinfection of waste collection areas within poultry operation systems. Two hundred and ten samples were gathered from variant waste types for isolation and identification of pathogenic bacteria. Then, the efficacy of some disinfectants against fifty strains of isolated bacteria was evaluated using a broth micro-dilution assay. Results showed the most predominant bacterial isolates from wastes were E. coli (33.69%), Salmonella spp. (26.09%), followed by K. pneumonae (15.22%) and L. monocytogenes (14....

Research paper thumbnail of Control of biofilm-producing Aeromonas bacteria in the water tanks and drinkers of broiler poultry farms using chitosan nanoparticle-based coating thyme oil

Iraqi Journal of Veterinary Sciences

Research paper thumbnail of Life Cycle Environmental Implications of Nanomanufacturing

The ELSI Handbook of Nanotechnology, 2020

Research paper thumbnail of Implementation of Novel Nanosilver Composites in Drinking Water Treatment

Polymer Nanocomposites Based on Silver Nanoparticles, 2021

Research paper thumbnail of The environmental surveillance system of NCOVID-19 and animal coronaviruses (TGEV and MHV) for mitigating the further spreading

Journal of Advanced Veterinary Research, 2020

Coronavirus disease 2019 (nCOVID-19) is a newly emerging disease first discovered in Wuhan city, ... more Coronavirus disease 2019 (nCOVID-19) is a newly emerging disease first discovered in Wuhan city, China, in December 2019 Currently, nCOVID-19 has become a global health concern causing severe respiratory tract infection besides animal coronaviruses includes transmissible gastroenteritis virus (TGEV) and mouse hepatitis virus (MHV) Implementing of surveillance system requires coordination and collaboration between the Centers for Disease Control and Prevention (CDC), local, and state public health authorities Outbreak surveillance can help to mitigate the further spreading of coronaviruses in the environment nCOVID-19 can persist on inanimate surfaces up to 9 days whilst animal coronaviruses (TGEV and MHV) can persist in the environment for ≥ 28 days at 4°C Effective surface disinfection may help to ensure an early containment and prevention of further viral spread Some biocidal agents effi-ciently inactivate coronavirus infectivity within minutes such as ethanol 70%, hydrogen peroxi...