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Articles by Yousef Davoudi
Total Records ( 2 ) for Yousef Davoudi
  Yousef Davoudi , Yagoob Garedaghi and Saied Safarmashaei
  Neonatal calf diarrhea is a major health problem that has economical losses as a culling, emaciation and treatment costs. Giardiasis is an importance disease for calves and case of diarrheal disease in animals that cause dysentery in calves especially in 3 months old. This study was carried out on newborn calves in different parts of East Azerbaijan province due to 1 year. Five hundred fecal samples were taken from diarrheic calves under the age of months from 25 commercial diary farms. After taking samples from rectum of the diarrheic calves, the samples kept in formalin 5% the samples were examined by direct test and concentration with formalin ether. The positive samples for Giardia were confirmed as 28% a significant difference was found between the prevalence rates in relation to the seasons of study (p<0.05). The highest prevalence rate was in summer (37.6%) and the least rate was in winter (16.8%).
  Yousef Davoudi and Yagoob Garedaghi
  Mycotoxins are those groups of fungus metabolites witch as the result of the consumption of contaminated food causes human or animal illness or death and the resulted illness from this is called mycotoxicosis. In this study, 100 samples from milk were analyzed for the presence of aflatoxin M1 by thin layer chromatography. This study showed that from 100 samples were analyzed a total of 84 samples (84%) were positive for aflatoxin M1 and 16 samples (16%) were negative. The range of aflatoxin M1 content was 30-630 ng L-1. Contamination rate of aflatoxin M1 in tanks milk in around (84%) with amounts ranging 30-630 ng L-1. All contaminated samples had a level of aflatoxin M1 above the European countries standard (50 ng L-1). Therefore, the following suggestions are made. Determined standard complications for aflatoxin limit value in feed and aflatoxin M1 in milk and dairy products use of effective methods for treatment of contaminated feed, milk and dairy products.
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