Fowl and turkey spermatozoa, when diluted in a glutamate-based medium and incubated at 40\s=deg\Cunder aerobic conditions showed a similar rate of oxygen utilization and maintained similar cellular ATP concentrations. Under anaerobic conditions, the glycolytic metabolism of fowl spermatozoa was sufficient to maintain a high ATP concentration, whilst turkey spermatozoa had a much lower glycolyti...

three iranian native strains and three japanese commercial lines of the silkworm bombyx mori were analyzed using amplified fragment length polymorphism (aflp) markers. a set of ten psti/taqi primer combinations amplified a total of 322 bands out of which 251 (%78) were polymorphic. estimates of nei’s gene diversity for all loci in individual strains and commercial lines indicated a higher degre...

INTRODUCTION.................................................................................. STRUCTURE OF THE MODEL VIRUSES............................................................ 1 Maus-Elberfeld Virus......................................................................... 1 Fowl Plague Virus ........................................................................... 2 Newcastle Disease...

Metadiscourse markers help writers make coherent and reader- friendly texts, thus of considerable importance in academic writing. The main aim of this study was to investigate how interactive and interactional metadiscourse markers are used by Iranian EFL learners. An inquiry was carried out to investigate cross-cultural similarities and differences in the use of metadiscourse markers in the Di...

The purpose of the present study was to compare the PhD dissertations written by native and nonnative English writers in the field of Applied Linguistics with regard to the use of self-mentions. To this end, 40 Applied Linguistics PhD dissertations (20 written by native English writers and 20 by non-native English writers), were selected randomly among academic texts written in 2007-2017. The p...

a survey of helminth parasites of domestic fowl carried out in faisalabad (pakistan) between 1994 and 1996 showed a high prevalence of nemaodes infestation in broiler and local poultry. ascardia galli and heterakis spp. were more prevalent in both groups of birds. syngamus tracheae and capillaria spp. were also present in both groups . raillietina spp. were the only cestode found in both the gr...

in order to show the type and severity of gross and histopathologic lesions induce by vaccinal strain (serotype a1) of pateurella mulocida, ten four-week-old spf chickens were inoculated intramuscularly with 75 cfu of ( 0.5 ml of 10-7 dilution) bacterium. all birds died in less than 16 hours. no prominent gross lesions were observed in different organs. in microscopic examination, the most comm...

In this study, we determined and genetically characterized three fowl adenoviruses isolated from chickens with inclusion body hepatitis (IBH) and hydropericardium syndrome (HPS) in China and assessed their pathogenicity. The full genome of HBQ12, BJH13 and JSJ13 was found to be 44,081, 43,966 and 43,756 nucleotides long, respectively. Sequence alignment and phylogenetic analysis revealed that s...

The ability of birds to perform effective jumps may play an important role in predator avoidance and flight initiation. Jumping can provide the vertical acceleration necessary for a rapid takeoff, which may be particularly important for ground-dwelling birds such as phasianids. We hypothesized that by making use of elastic energy storage and release, the leg muscles could provide the large powe...

The avian embryo develops within an eggshell which limits the rate of gaseous exhange between the bloodstream and the environment. In the latter half of normal incubation a considerable respiratory disturbance develops so that in the blood of the embryonic fowl the PCOi rises from 20 to 60 mmHg within about 8 days (Dawes & Simkiss, 1969; Freeman & Misson, 1970). A variation of this magnitude in...