Infectious bronchitis virus serotypes in poultry flocks in Jordan     

Gharaibeh SM 《Preventive veterinary medicine》2007,78(3-4):317-324

Infectious bronchitis virus (IBV) causes respiratory disease in chickens all over the world. IBV has many serotypes that do not confer cross protection against each other. Hemagglutination inhibition (HI) test has been used to determine the serotypes of IBV as a substitute to the more laborious virus neutralization test and the more sophisticated restriction endonuclease digestion or sequencing of the S1 gene. In Jordan, no previous studies have been carried out to determine the involvement of IBV in respiratory disease in chickens, or the serotypes of IBV that possibly exist. In this study, serum from different chicken flocks (n = 20) that suffered from respiratory disease were tested for IBV antibodies using commercial IBV antibody ELISA at time of the initial signs of the respiratory disease and repeated on serum samples from the same flocks 10–14 days later. ELISA titer for IBV increased in 14 out of 20 flocks (70%) after 10–14 days of the initial signs of the respiratory disease and this indicates a recent exposure to IBV. The second serum samples from these 14 flocks were further examined against a panel of five IBV antigens (Ark, Conn, DE-072, JMK, and Mass) by HI test to determine the serotype(s) of IBV they have been exposed to. The HI test results indicated that the exposure of some of these flocks were to Ark, DE-072, and Mass like serotypes. However, the HI titers against the antigens used in this study were relatively similar in 10 out of the 14 flocks (71%) and the serotype of IBV that these flocks were exposed to could not be determined and the possible causes of this are discussed.  相似文献   

Assessment of phenotypic and molecular diversity in soybean [Glycine max (L.) Merr.] germplasm using morpho-biochemical attributes and SSR markers     

Ullah  Atta  Akram  Zahid  Malik  Saad Imran  Khan  Khalid Saif Ullah 《Genetic Resources and Crop Evolution》2021,68(7):2827-2847

Genetic Resources and Crop Evolution - Soybean is a high-nutritional crop that provides a sustainable source of dietary protein and edible oil for human consumption and animal diet. In this...  相似文献   

Phenotypic evaluation and characterization of a collection of Malus species     

Monika Höfer  Mohamed Ali Mohamed Saad Eldin Ali  Jörg Sellmann  Andreas Peil 《Genetic Resources and Crop Evolution》2014,61(5):943-964

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A study on the synergetic effect of Bacillus amyloliquefaciens and dipotassium phosphate on Alternaria solani causing early blight disease of tomato     

Imran  Muhammad  Abo-Elyousr  Kamal A. M.  Mousa  Magdi A. A.  Saad  Maged M. 《European journal of plant pathology / European Foundation for Plant Pathology》2022,162(1):63-77

European Journal of Plant Pathology - A study of the effect of bioagents and dipotassium phosphate (DPP) and their combination on early blight disease reduction under greenhouse conditions was...  相似文献   

Adhesion properties of wheat-based particles     

A. Duri  M. George  M. Saad  E. Gastaldi  M. Ramonda  B. Cuq 《Journal of Cereal Science》2013

Specific AFM analytical methods were tested to the surface evaluation of wheat powders at micrometric scale in dry conditions. The objective was to evaluate the adhesion properties of particles based on the main wheat endosperm components (starch, protein, and arabinoxylan) that are characterized by large diversity in terms of chemical composition and particle characteristics. Experiments were conducted by using the force spectroscopy mode to determine interactions generated by the surfaces of particles that were glued on AFM tips, and two reference flat and smooth surfaces, a glass and a polysine slide. Particular care has been devoted to characterize the surfaces in contact since local contact radius is a key parameter in the interpretation of the interactions. The statistical analysis of the normalized adhesion forces have shown the sensitivity of the AFM technique for hydrophobic wheat components and their correlation with the surface tension of the particles.  相似文献   

Probiotic activity of Bacillus subtilis in juvenile freshwater prawn, Macrobrachium rosenbergii (de Man) at different methods of administration to the feed     

Mehran Avakh Keysami  Masoumeh Mohammadpour  Che Roos Saad 《Aquaculture International》2012,20(3):499-511

This experiment was carried out to investigate the potential probiotic properties of Bacillus subtilis and suitable methods of administration to the commercial feed in juvenile Macrobrachium rosenbergii (de Man) from 25 August to 25 November 2008. Putative Bacillus subtilis bacterium isolated from juvenile M. rosenbergii intestine was added to commercial prawn feed as a probiotic. Five types of diets were prepared by mixing B. subtilis at level of 108 cells g^?1 with commercial feed using different methods consisting mixing, soaking, spraying and bathing. After 60?days, the prawns fed diets at soaking method treated group, showed a higher mean weight gain (2.09) or 328.84% increase in growth over control. There were significant differences (P?<?0.05) in weight gain, feed intake and FCR among soaking method and other treated and control groups. There was significant difference (P?<?0.05) in survival among treated and control groups, but no significant difference (P?>?0.05) in water quality and biochemical composition among treated and control groups. Clearly, B. subtilis-treated diets appeared to enhance growth and survival of juveniles M. rosenbergii. It was concluded that the tested strain may be a promising probiotic for M. rosenbergii under soaking method of administration to the prawn commercial feed.  相似文献   

Effects of dietary mono‐ and multiprobiotic strains on growth performance,gut bacteria and body composition of Javanese carp (Puntius gonionotus,Bleeker 1850)          下载免费PDF全文

S.K. Allameh  F.M. Yusoff  E. Ring  H.M. Daud  C.R. Saad  A. Ideris 《Aquaculture Nutrition》2016,22(2):367-373

This study investigated the effects of dietary mono‐ and multiprobiotic strains of Enterococcus faecalis, Lactobacillus fermentum and Leuconostoc mesenteroides on growth performance, intestinal bacteria and body composition of Javanese carp (Puntius gonionotus). Moreover, the effect of storage temperature on lactic acid bacteria (LAB) viability in the feed was studied. Compared to the control group, significant (P < 0.05) effect on weight gain, feed conversion ratio, specific growth rate and protein efficiency ratio of probiotic fed Javanese carp was observed. Inclusion of individual LAB strains in the diet resulted in significantly improved growth performances of Javanese carps compared to fish fed a diet supplemented LAB mixture. The inclusion level of E. faecalis at 10⁷ colony‐forming unit (cfu) g⁻¹ in the diet revealed higher growth performance compared to other treatments. The population levels of LAB in the fish intestine were significantly increased while the levels of Gram‐negative bacteria were significantly decreased compared to the control. No significant variations were observed in the chemical composition of the carcass by probiotics. The viability of LAB in feed was higher when stored at 4 °C compared to 25 °C. It is suggested that E. faecalis has a greater potential for use in improving Javanese carp culture outcomes.  相似文献   

Effect of dietary phosphorus supplementation on utilization of algae in the grow‐out diet of Nile tilapia Oreochromis niloticus     

Ebtehal El‐Sayed Hussein  Konrad Dabrowski  Deyab Mohammed Saad Deyab El‐Saidy  Bong‐Joo Lee 《Aquaculture Research》2014,45(9):1533-1544

This research involved testing the replacement of corn gluten protein concentrate in the diet of 1.5 g Nile tilapia with biofuel algae‐based or algae supplemented with phosphorus diets. Experimental diets were formulated to replace 50% of the gluten meal protein in the control diet with biofuel algae protein (Alga50) or Spirulina (Spirulina50) protein. In addition, dicalcium phosphate (P) was added to the Alga50 at a concentration of 3.8% or 7.74% to mitigate aluminium (Al) toxicity and designated as Alga50 + P, and Alga50 + PP respectively. After 9 weeks of the feeding experiment, fish fed diets supplemented with P, Alga50 + P and Alga50 + PP differed significantly (P < 0.05) with respect to the feed conversion and protein deposition from the control. The mineral composition of the fish body showed a decrease in levels of Al and iron (Fe) due to the P supplements. The mineral composition of the faeces indicated that Al and Fe were excreted in the faeces and were not accumulated in the fish body. The effect of dicalcium P supplementation on the neutralization of Al in the diet resulted in improved fish growth and histological integrity of the gastrointestinal tract.  相似文献   

Investigation of irrigation performance at the tertiary canal level in the Nile Delta of Egypt     

Ragab  Mohamed Farig Saad  Shimizu  Katsuyuki  Abou El Hassan  Waleed H.  Nakumura  Kimihito  Watanabe  Tsugihiro 《Paddy and Water Environment》2019,17(2):69-74

Paddy and Water Environment - One of the objectives of the Irrigation Improvement Project (IIP) in the Nile Delta, Egypt, is to facilitate equitable water distribution and improve on-farm...  相似文献   

Efficiency assessment of the antifungal metabolites from Sclerotium cepivorum against onion white rot disease     

Elsherbiny A. Elsherbiny  Amany S. Saad  Mona G. Zaghloul  Mohamed A. El-Sheshtawi 《European journal of plant pathology / European Foundation for Plant Pathology》2015,142(4):843-854

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