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Articles by Amin Jazayeri
Total Records ( 4 ) for Amin Jazayeri
  Sepehr Shekarchian , Sahab Shekarchian , Monika Motaghi and Amin Jazayeri
  The aim of this study is to determine the proportion of fetuses destroyed due to the slaughter of pregnant cows at Incidence of Fetal Wastage in Cattle Slaughtered at the Shahrekord Industrial Slaughter House, Shahrekord, Iran. A retrospective study was conducted on abattoir records kept by the Chahar-Mahal-O-Bakhtiari State Department of Veterinary Services over a 4 years period. The study showed an incidence rate ranging from 1.50-2.10% over the 4 year study period (Average of 1.8%). This practice constitutes a huge drain on the animal protein availability for human consumption in a developing country like Iran. It is therefore recommended that appropriate legislation be put in place and enforced to control the slaughter of pregnant animals. Comprehensive ante-mortem inspection should also be carried out by abattoir staff on all animals intended for slaughter for human consumption.
  Amin Jazayeri , Sepehr Shekarchian , Masoomeh Ghobadi and Monika Motaghi
  The study was conducted to determine withdrawal periods of intramammary preparations Curaclax (ampicillin+ceplulosporin), oxymast (oxytetracycline) and spectrazol (cefruxine) in camel and cow milk. Withdrawal periods in milk were 4 days in cows versus 5 days in camels for curaxlox and 4 days in cows versus 6 days in camel for oxmast and spectrazol. The significant (p<0.05) difference in withdrawal periods between camel and cow emphasizes the need to establish specific withdrawal periods for other drugs in the camel.
  Sepehr Shekarchian Chaleshtori and Amin Jazayeri
  Verotoxin-producing of Escherichia coli O157 is an increasingly common cause of severe gastrointestinal illness, enlisted among the most important emerging pathogens. The present study was conducted to investigate the presence of E. coli O157 and E. coli O157:H7 strains and to detect the presence of the stx1, stx2, eae and ehxA insolates derived from 290 samples (120 samples from traditional fresh cheese, 120 samples from traditional ice cream and 50 samples from yoghurt). The samples were purchased from the Tehran province in Iran, over a period 6 months from August, 2010 to February, 2011. Standard cultural method and polymerase chain reaction were applied for these analyses. E. coli O157 was detected in nine of the 290 (3.1%) samples tested (5 isolated from traditional cheese and 4 isolated from traditional ice cream samples) whereas E. coli O157:H7 was not detected in any samples. The genes stx1 and stx2 were detected in three E. coli isolated obtained from traditional cheese samples none of the stx1, stx2, eae and ehxA was detected in the E. coli isolates obtained from traditional ice cream samples. Susceptibilities of nine E. coli O157 isolates were determined for ten antimicrobial drugs using the disk diffusion assay. Resistance to ampicillin and gentamycin was the most common finding (44.4%) followed by resistance to erythromycin (33.3%), amoxicillin (11.1%), tetracycline (11.1%) and nalidixic acid (11.1%). All E. coli O157 isolates were susceptible to chloramphenicol, cefuroximeand streptomycin. Thus, traditional cheese and ice cream manufactured from unpasteurized milk have appositional risk as a result of E. coli O157 existence.
  Abas Tavakoli , Sepehr Shekarchian , Sahab Shekarchian and Amin Jazayeri
  Campylobacter sp. are one of the most frequent pathogens of acute bacterial gastroenteritis which is transmitted mostly via food originating from animals. This study was conducted to determine the prevalence of Campylobacter sp., in raw bovine milk in Mashhad, Iran. From June, 2008-2009, a total of 120 raw bovine milk samples from randomly selected dairy bovine herds in Mashhad, Iran and were evaluated for the presence of Campylobacter. In this study, 3 of 120 raw bovine milk samples (2.5%) were found to be contaminated with Campylobacter. Campylobacter isolates recovered from raw bovine milk were all identified as C. jejuni. To the knowledge, the present study is the first report of the isolation of Campylobacter sp., from raw bovine milk in Mashhad, Iran.
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