نتایج جستجو برای: commercial layer
تعداد نتایج: 416695 فیلتر نتایج به سال:
Mycoplasmas are important avian pathogens, which can cause both respiratory disease and synovitis in poultry that result in considerable economic losses to the poultry industry all over the world. The aim of this study was to determine the prevalence of Mycoplasma gallisepticum and Mycoplasma synoviae infections among commercial poultry flocks in ...
thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...
the subgroup j of alv (alv-j) has emerged as an important pathogen of meat-type chickens since1989. this virus is responsible for economic losses due to both mortality and depressed performance inchickens. so, the objective of this study is the detection of alv-j in the albumen of commercial and nativefowl eggs using rt-pcr. three hundred and seventy egg albumens were randomly selected from dif...
Host resistance in Desi and commercial layer breeds was studied in this study. It was evaluated by measuring sensitivity of RBCs to LPAIV induced hemagglutination by using RBCs of two breeds and nine other avian species. Moreover, egg infectious dose 50 (EID50) along with mean death time (MDT) in embryonated eggs, intracerebral pathogenicity in dayold chicks, and intravenous pathogenicity, in f...
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