Amany Abbass

Amany Abbass
Benha University · Department of Fish Diseases and Management

PhD

About

64
Publications
15,096
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604
Citations
Additional affiliations
March 1980 - present
Benha University
Position
  • Professor (Full)

Publications

Publications (64)
Chapter
Aquaculture provides an excellent resource of animal protein of high nutritional value, and thus impacts favourably on food security. At present, one of the concurrent problems concerns the occurrence of diseases that results in significant economic lossesEconomic loss globally of almost $9 billion USD per year. Thus, reducing the impact of disease...
Article
Probiotics application in aquaculture could be a key solution to enhance the overall immune and growth indicators of cultured fish. Several bacteria have demonstrated encouraging results as probiotics for fish. The current study evaluated the possible effects of Zado® (Ruminococcus Flavefaciens 28 × 10⁴ CFU) dietary incorporation at 1 and 2 g/kg di...
Article
Full-text available
This study was conducted in two experiments. Experiment 1 aimed to investigate the growth promoting and anti-oxidative effects of Azolla nilotica (AZN) and Spirulina platensis (SP) in Oreochromis niloticus. Seven fish groups (G1-G7), each in three replicates, were fed a basal diet (control), AZN 5%, AZN 10%, SP 0.5%, SP 1%, a mixture of Azolla nilo...
Article
This study was conducted in two experiments. Experiment 1 aimed to investigate the growth promoting and anti-oxidative effects of Azolla nilotica (AZN) and Spirulina platensis (SP) in Oreochromis niloticus. Seven fish groups (G1-G7), each in three replicates, were fed a basal diet (control), AZN 5%, AZN 10%, SP 0.5%, SP 1%, a mixture of Azolla nilo...
Article
Full-text available
Keywords The current investigation was undertaken to determine the potential causes of summer mass mortalities among farmed Nile tilapia (Oreochromis niloticus). Pure bacterial colonies were isolated from moribund O. niloticus from 13 different fish farms suffered from high mortalities ranged from (50-80%), during the period from April to October 2...
Article
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ARTICLE INFO ABSTRACT Keywords The current study aimed to control the bacterial infection associated with summer mortalities in Nile tilapia. The sensitivity of the isolated bacteria, including Aeromonas Veronii (A. veronii) strain (HY1, HY2, HY3, HY4 and HY6), Citrobacter freundii (C. freundii), Proteus vulgaris (P. vulgaris) and pseudomonas fluro...
Article
This study investigated the efficacies of honey bee pollen (HBP), ginger (Zingiber officinale), and Moringa oleifera leaves (MOL) as feed additives to counteract dimethoate (DM) toxicity in Nile tilapia (Oreochromis niloticus L.). The fish were divided into eight treatment groups: G1 (control group; basal diet + no DM exposure), G2 (2.5% HBP-supple...
Article
Full-text available
Natural plant dietary supplementation in aquafeed could be used as an effective way for increasing the immunocompetency and disease resistance of fish. The current study aimed to investigate the potential effects of dietary Moringa oleifera leaf powder supplementation on the immune response, antioxidant status, and disease resistance against Aeromo...
Article
Full-text available
The current study investigated the effects of Moringa (Moringa oleifera) leaf meal (MLM) on growth and stress indices of Nile tilapia (O. niloticus). Experimental fish (2.0 ± 0.5 g average body weight) were divided into two groups; one was fed with a diet not supplemented with MLM (control diet), and the other group was fed with a diet supplemented...
Article
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Clinically diseased Oreochromis niloticus, Claris gariepinus, and Mugil cephalus were collected from different localities at El-Riah El-Tawfiki and its tributaries (Qalyubia), Kafr El-Sheik and Ismailia governorates. The clinical picture and gross lesions were recorded. Isolation and identification of the bacterial pathogens using traditional and m...
Article
Full-text available
Influence of dietary Thyme (Thymus vulgaries) and rosemary (Rosmarinus officinale) on growth performance, physiological and resistance of Oreochromis niloticus to Aeromonas hydrophila infection. Doaa Ahmed, Eman El Araby and Amany A. Abbass* Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Benha University, Egypt. * Corre...
Conference Paper
Full-text available
The present study was carried out to investigate the effects of thyme and rosemary as feed additives on growth performance, cellular immunity, and protection of Oreochromis niloticus against Aeromonas hydrophila. Fish were divided into 3 groups and fed on three experimental diets (basal diet 0%, 1% thyme, and 1% rosemary). Fish received thyme and r...
Article
Full-text available
The present study was carried out to investigate the effects of thyme and rosemary as feed additives on growth performance, cellular immunity, and protection of Oreochromis niloticus against Aeromonas hydrophila. Fish were divided into 3 groups and fed on three experimental diets (basal diet 0%, 1% thyme, and 1% rosemary). Fish received thyme and r...
Article
Full-text available
The present study was carried out on two hundred Clarias gariepinus naturally collected during January to December (2016) to identify parasitic infestation affect C. gariepinus in downstream El-Rahawy drain, Giza, Egypt. The infested fish showed congested gills and fins, excessive mucous secretion, presence of yellowish white nodule in suprabranchi...
Article
Full-text available
In current study, Yellow perch (P. flavescens) was exposed to common forms of physical stressors and antioxidative effects of dietary incorporated Astragalus membranaceus (AM) and Glycyrrhiza glabra (liquorice) were assessed. To address this, for a four-week five groups of fish (31 ± 1.0 g, average weight) received 1, 2, and 3% (w/w) Glycyrrhiza gl...
Article
Full-text available
The present study aimed to isolate and identify of Aphanomyces invadans from naturally infected African Catfish" Clarias gariepinus". A total number of 105 cultured Clarias gariepinus collected from private fish farms in Kafr Al-Sheikh & Behera Governorates. Result revealed that the prevalence of infection among the examined fish was 8.6 % and the...
Article
Full-text available
The present study aimed to isolate and identify of Aphanomyces invadans from naturally infected African Catfish" Clarias gariepinus". A total number of 105 cultured Clarias gariepinus collected from private fish farms in Kafr Al-Sheikh & Behera Governorates. Result revealed that the prevalence of infection among the examined fish was 8.6 % and the...
Article
Full-text available
The present study aimed to isolate and identify of Aphanomyces invadans from naturally infected African Catfish" Clarias gariepinus". A total number of 105 cultured Clarias gariepinus collected from private fish farms in Kafr Al-Sheikh & Behera Governorates. Result revealed that the prevalence of infection among the examined fish was 8.6 % and the...
Article
Full-text available
The present study aimed to isolate and identify of Aphanomyces invadans from naturally infected African Catfish" Clarias gariepinus". A total number of 105 cultured Clarias gariepinus collected from private fish farms in Kafr Al-Sheikh & Behera Governorates. Result revealed that the prevalence of infection among the examined fish was 8.6 % and the...
Article
The present study aimed to isolate and identify of Aphanomyces invadans from naturally infected African Catfish" Clarias gariepinus". A total number of 105 cultured Clarias gariepinus collected from private fish farms in Kafr Al-Sheikh & Behera Governorates. Result revealed that the prevalence of infection among the examined fish was 8.6 % and the...
Article
Full-text available
This study was designed to assess the potential effects of Astragalus membranaceus (AM) on the growth performance and antioxidative stress response in bluegill sunfish (Lepomis macrochirus) exposed to challenging cold water temperature conditions. In this regard, fish with an average weight of 43 ± 1 g were divided into four groups and fed daily wi...
Article
The current work assessed the potential immunomodulatory and growth-promoting effects of Astragalus membranaceus (AM) and Glycyrrhiza glabra (liquorice) in Yellow perch (Perca flavescens). In this regard, fish with an average weight of 31 ± 1.0 g were divided into five groups, and fed daily with an additive-free basal diet (control); 1, 2, and 3% (...
Article
Full-text available
The aim of the present investigation is to evaluate the effects of dietary ginger on haematological and biochemical parameters, spleen histopatholgical changes and disease resistance of Oreochromis niloticus (O. niloticus) fingerlings. Four test diets containing different levels of ginger (0, 1, 2 and 3%) (W/W) were fed for O. niloticus fingerlings...
Article
Full-text available
Global temperature climate changes affect stress, immune function and growth of aquatic animals. The aim of this study was to investigate the effect of different temperatures on oxidative stress, thermal stress, immune response and growth in bluegill sunfish (Lepomis macrochirus). The experiment included four groups that were exposed to different w...
Article
Full-text available
Global temperature climate changes affect stress, immune function and growth of aquatic animals. The aim of this study was to investigate the effect of different temperatures on oxidative stress, thermal stress, immune response and growth in bluegill sunfish (Lepomis macrochirus). The experiment included four groups that were exposed to different w...
Article
Full-text available
Within the last few years, freshwater Crayfish Procambarus clarkii (P. clarkii) has been successfully established in various sites of the river Nile and its branches. The main aim of this study was to describe improved techniques for obtaining good quality metaphase from a variety of tissues, the mitotic chromosome number and to evaluate the geneti...
Article
Full-text available
The present study was carried out on three freshwater fishes Oreochromis niloticus (wild and cultured), Clarias gariepinus and Lates niloticus which were collected from different localities from February to November (2013). The infested fishes showed no pathognomonic clinical signs except slight abdominal distention. Fish species subjected to paras...
Article
Full-text available
The present study aimed at verifying the usefulness of dietary 2.5% bee-pollen (BP) or propolis (PROP) to overcome the genotoxic and endocrine disruptive effects of malathion polluted water in Oreochromis niloticus (O. niloticus). The acute toxicity test was conducted in O. niloticus in various concentrations (0–8 ppm); mortality rate was assessed...
Article
Full-text available
The objective of this investigation was to study the total prevalence, seasonal Dynamics and diagnosis of Myxosporidiosis in different freshwater fishes. The present study was carried out on five fish species (wild and cultured) Oreachromis niloticus, Clarias gariepinus, Mugil cephalus, Lates niloticus and Ctenopharyngodon idella which were collect...
Article
Full-text available
The objective of this investigation was to study the total prevalence, seasonal Dynamics and diagnosis of Myxosporidiosis in different freshwater fishes. The present study was carried out on five fish species (wild and cultured) Oreachromis niloticus, Clarias gariepinus, Mugil cephalus, Lates niloticus and Ctenopharyngodon idella which were collect...
Article
Edwardsiella ictaluri is a Gram-negative facultative intracellular pathogen causing enteric septicemia in channel catfish. Iron is an essential micronutrient needed for bacterial virulence, and to acquire iron, many Gram-negative bacteria secrete ferric iron chelating siderophores. The ferric hydroxamate uptake (Fhu) system consists of four genes (...
Article
Full-text available
To investigate the effects of Zingiber officinalis and Cyanodon dactylon supplementation on the growth performance and immune parameters of Macrobrachium rosenbergii juveniles, five experimental diets, including a control basal diet and four treated diets with 1.5 and 3% Z. officinalis ; 2 and 4% C. dactylon were prepared. Prawn fed with control an...
Article
Full-text available
Pollution of water resources with agricultural water drainage has a great risk on fish reproduction. Organophosphrous pesticides such as Malathion and dimethaote are frequently used in Egypt due to their highly effectiveness for controlling agriculture pests. These pesticides were found that have endocrine disrupting effect on fish reproduction thr...
Article
Full-text available
Oreochromis niloticus from Qaroun and El Rayan lakes were collected and examined for the presence of pseudomonas species. The organisms were found in 30.83% of the 480 examined fish with some fish, especially during the episode of mass mortality showing, typical signs of pseudomonas septicemia; redness all over the body, abdominal swelling, eyes cl...
Article
Subcellular components of the probiotics Aeromonas sobria GC2 and Bacillus subtilis JB-1, when administered to rainbow trout, Oncorhynchus mykiss, conferred protection against a new biogroup of Yersinia ruckeri. Thus, intraperitoneal or intramuscular injection of rainbow trout with cell wall proteins (CWPs), outer membrane proteins (OMPs), lipopoly...
Article
Full-text available
Streptococcus spp. were isolated from the apparently health and diseased Oreochromis niloticus and Clarias gariepinus. The prevalence of infection was 17.5 and 19 % respectively and the disease mainly recorded during summer. Darkness of the skin , exophthalmia and hemorrhaging in the skin and fins were the prominent signs. Kidneys yielded the highe...

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