Activity ofBacillus thuringiensis Berl. on the lesser cotton leafwormSpodoptera exigua Hbn. (Lep., Noctuidae) in corn and sunflower cultivations in Egypt     

prof. Dr. H. S. Salama  F. N. Zaki  S. A. Salem  M. K. Hamdy  M. Megahed 《Journal of pest science》1993,66(2):29-31

Field applications usingBacillus thuringiensis (Dipel 2 X) againstSpodoptera exigua infesting corn and sunflower cultivations were carried out in two different localities in Egypt. The percentage of infested corn plants decreased to 2.5%, seven days after treatment with Dipel 2x, (250 g/fed) and the yield was significantly increased compared with untreated plots. The carbamate insecticide (Lannate) at 300 g/fed caused complete kill to the larvae and the highest yield was obtained. Application of Lannate, Dipel (250 g) or a combination of both (150 g/each/fed) caused a high reduction of the larvae existing in sunflower after seven days from application, while Dipel at 200 g/fed gave a lower effect. Ten days after application, the number of larvae and infested plants increased significantly in plots treated with Lannate alone, while plots treated with either Dipel (250 g) or Dipel combined with Lannate (150 g/each) still maintained a lower infestation. The estimated yield showed the highest increase in plots treated with Lannate followed by Dipel (250 g) and then a combination of both.  相似文献   

Control ofAgrotis ypsilon (Hufn.) (Lep., Noctuidae) on some vegetable crops in Egypt using the microbial agentBacillus thuringiensis     

H. S. Salama  S. Salem  F. N. Zaki  M. Matter 《Journal of pest science》1990,63(8):147-151

The effective threshold rate of application of Dipel 2X was 250g/f. Incorporation of some chemical additives such as calcium sulphate (CaSO₄) or calcium oxide (CaO) significantly potentiated the effectiveness of Dipel 2X on larval population. The addition of calcium carbonate (CaCO₃) and zinc sulphate (ZnSO₄) to Dipel 2X greatly reduced the larval population and led to a significant increase in the yield of some vegetable crops. Dipel 2X baits at 250g/f were almost as effective as the chemical insecticide Hostathion when used at 1.5l/f in controllingA. ypsilon larvae attacking vegetable crops. Control of the greasy cutwormAgrotis ypsilon population was better achieved when the biological control agent Dipel 2X was used as baits.  相似文献   

Dietary curcumin nanoparticles promoted the performance,antioxidant activity,and humoral immunity,and modulated the hepatic and intestinal histology of Nile tilapia fingerlings     

Abdel-Tawwab  Mohsen  Eissa  El-Sayed Hemdan  Tawfik  Wesam A.  Abd Elnabi  Heba E.  Saadony  Saadea  Bazina  Walaa K.  Ahmed  Ragaa A. 《Fish physiology and biochemistry》2022,48(3):585-601

Fish Physiology and Biochemistry - The current study investigated the effects of dietary curcumin nanoparticles (C-NPs) on the performance, hemato-biochemical profile, digestive enzymes activities,...  相似文献   

An embryonic anomaly in Gallus domesticus     

Z. N. Mahmoud  Suzy M. Salama 《British poultry science》1986,27(1):147-148

  相似文献   

Induction of defence related enzymes and phenolic compounds in lupin (Lupinus albus L.) and their effects on host resistance against Fusarium wilt     

Saieda S. Abd El-Rahman  Mohamed M. Mazen  Heba I. Mohamed  Neven M. Mahmoud 《European journal of plant pathology / European Foundation for Plant Pathology》2012,134(1):105-116

Two different biotic inducers [Pseudomonas fluorescens and Pseudomonas putida] and three different abiotic inducers [copper sulphate, indole butyric acid and potassium chloride] were tested for their efficacy in inducing resistance in lupin plants against Fusarium wilt disease caused by Fusarium oxysporum f. sp. lupini. Application of the biotic and abiotic inducers as seed treatments significantly reduced wilt disease incidence under greenhouse and field conditions. Potassium chloride and Pseudomonas fluorescens were superior. A time course of defence-related enzymes showed substantial increases in enzyme activities in induced infected seedlings compared with untreated healthy plants or infected controls. However, the magnitude of the increase varied among treatments. The maximum increases in chitinase and ??- glucanase activities were recorded at 12 and 8?days after inoculation with the pathogen, respectively. Also, the activity of phenylalanine ammonia lyase increased dramatically 8?days after inoculation. Greater accumulation of phenolic compounds and specific flavonoids upon infection with the pathogen was found in induced and/ or infected seedlings compared with healthy plants. In addition to inducing disease resistance, the treatments were accompanied by significant increases in crop parameters and seed yield compared with untreated controls.  相似文献   

Evaluation of in vitro and in vivo inhibitory effects of fusidic acid on Babesia and Theileria parasites     

Akram Ahmed Salama  Mahmoud AbouLaila  Ahmed A. Moussa  Mohamed A. Nayel  Ahmed El-Sify  Mohamad A. Terkawi  Hany Y. Hassan  Naoaki Yokoyama  Ikuo Igarashi 《Veterinary parasitology》2013,191(1-2):1-10

Fusidic acid known to has antibacterial, antifungal, and antimalarial activities. Fusidic acid blocks translation elongation factor G gene in Plasmodium falciparum. In the present study, the inhibitory effects of fusidic acid on the in vitro growth of bovine and equine Babesia parasites were evaluated. The inhibitory effect of fusidic acid on the in vivo growth of Babesia microti was also assessed. The in vitro growth of four Babesia species that were tested was significantly inhibited (P < 0.05) by micromolar concentrations of fusidic acid (IC₅₀ values = 144.8, 17.3, 33.3, and 56.25 μM for Babesia bovis, Babesia bigemina, Babesia caballi, and Theileria equi, respectively). Combinations of fusidic acid with diminazene aceturate synergistically potentiated its inhibitory effects in vitro on B. bovis and B. caballi. In B. microti-infected mice, fusidic acid caused significant (P < 0.05) inhibition of the growth of B. microti at the dose of 500 mg/kg BW relative to control group. These results indicate that fusidic acid might be incorporated in treatment of babesiosis.  相似文献   

Adaption of a formula for simulating bedload transport in the Nile River,Egypt     

Abdelhaleem  Fahmy Salah  Amin  Ahmed Mostafa  Basiouny  Mohamed Elsayed  Ibraheem  Heba Fathy 《Journal of Soils and Sediments》2020,20(3):1742-1753

Journal of Soils and Sediments - Bedload transport discharge is important in river engineering and morphodynamics. The Meyer-Peter and Müller (MPM) equation for determining bedload transport...  相似文献   

Cryptosporidiosis in buffalo calves (<Emphasis Type="Italic">Bubalus bubalis</Emphasis>): Prevalence and potential risk factors   总被引：1，自引：0，他引：1  

El-Khodery SA  Osman SA 《Tropical animal health and production》2008,40(6):419-426

The objective of the present study was to describe the prevalence and risk factors associated with cryptosporidiosis in buffalo calves in Middle Egypt. During one year, 458 fecal samples were collected from buffalo calves less than 3 month age in 55 small scale herds and examined for the presence of Cryptosporidium oocysts. Data describing age, gender, season, and herd management practices were gathered to assess potential risk factors. Fecal examination showed that 14.19% of the examined calves were positive for Cryptosporidium spp. Calves at 1-15 days were at the highest risk (P < 0.001), and a significant relationship between season and infection (P < 0.05) was recorded. A significant association between infection and hygiene (P < 0.001), type of floor (P < 0.01) and source of water (P < 0.01) was also recorded. Statistical analysis concerning the clinical signs and fecal characteristics revealed a significant association with fecal consistency (P < 0.001), presence of blood (P < 0.01) and mucous (P < 0.01). Moreover, a significant association was found between infection and the desire for suckling (P < 0.05) and tenesmus (P < 0.05). The results of the present study demonstrated the strong relation between infections by Cryptosporidium spp. and diarrhea in buffalo calves.  相似文献   

Growth performance,biochemical, cytological and molecular aspects of rabbits exposed to lead toxicity     

Heba S. A. Taha  Sameh A. Abdelnour  Mahmoud Alagawany 《Journal of animal physiology and animal nutrition》2019,103(3):747-755

Heavy metals have enormous variety of deleterious effects on many organs in the body. This study demonstrated the toxic influences of lead on the growth, biochemical, cellular and molecular aspects of developing rabbits. Seventy‐five rabbits (New Zealand NZW) were divided into five equal groups as follows; control (C) and four treatment groups (T1‐4) orally administered lead acetate solution as follow T1: 20, T2: 30, T3: 50 and T4: 70 mg/kg body weight. Lead resulted in a significant decrease in live body weight, daily body weight gain and feed intake in T3 and T4 compared to those in other groups. Blood haematology measurements such as red blood cells, haematocrit (HCT), mean corpuscular volume, platelet, white blood cells and lymphocytes were significantly influenced by the high level of lead. Oral administration of lead significantly reduced total proteins in the serum. It was observed that the high lead level led to significantly (p < 0.05) increased levels of aspartate aminotransferase, alanine aminotransferase enzymes, urea and creatinine. Four random amplified polymorphic DNA primers polymorphism were detected among the treatment groups. Total number of induced bands (loss or appearance) compared with control group were 4, 10, 10 and 14 bands using primers P1, P2, P3 and P4 respectively. Number of micronuclei showed a dose–response increase and the difference was highly significant especially between control compared with T3 and T4 groups. From our results, we can conclude that exposure of rabbits to lead acetate resulted in negative effects on the growth performance and altered the haematological and biochemical parameters, in addition to its adverse impact on cytological and molecular characterization of animals.  相似文献   

Efficacy of aerial application ofBacillus thuringiensis to controlSpodoptera littoralis (Lepidoptera, Noctuidae) infesting soybean cultivations in Egypt     

H. S. Salama  S. A. Salem 《Anzeiger für Sch?dlingskunde》1999,72(3):62-64

The calculated percentage of droplets deposition ofBacillus thuringiensis var.kurstaki HD-1 Dipel 2X on the foliage of soybean plants in relation to the sensitive “Ciba Geigy” papers showed to be the highest (92.4%) after ground spray application, compared to an average of 67.4, 85.8 and 89.3% following aerial application of the same preparation in spray volumes of 10, 20 and 30 l/F, respectively. Aerial application ofB. t. showed to be more effective during the first 3 days after spraying soybean cultivations and the mortality ofSpodoptera littoralis larvae varied between 36.9–67.2% in correlation to the spray volume. The volume achieving the highest and significant suppression of infestation was 20 l/F. On the other hand, the yield of soybeans obtained from plots receiving a spray volume of 30 l/F was higher compared to plots sprayed with a volume of 20 or 10 l/F, but with no significant difference when compared to those plots receiving ground spray application.  相似文献