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EVALUATION OF ANTIBODY LEVEL AGAINST E. COLI K99 IN CLOOSTRUM OF COWS IN SUBURBS OF TEHRAN, IRAN

Journal Name:

  • İstanbul Üniversitesi Veteriner Fakültesi Dergisi

Publication Year:

  • 2008

Key Words:

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
"One hundred and twenty colostrum samples were obtained from 120 randomly selected populations of Holstein dairy cows just on day of calving in the south of Tehran. The competitive ELISA kit for serodiagnosis of anti Escherichia coli K99(F5) attachment factor in colostrum (Biox diagnostics) were used. Out of 120 samples, 7 cases (5.83%) showed >80% inhibition in ELISA, which were considered as a high titre colostrum associated with E.coli K99, 28 samples had no any anti E.coliAb, 71 samples showed degree of positivity between 1 + and 2 + and 14 samples were 3 + . The present study showed that only 5.83% of colostrum samples had high titre of anti E.coli K99Ab for passive transfer to protect the calves against diarrhea due to E.coli K99. Therefore, it is recommended that vaccination of pregnant cowsis necessary for enhancing the titre of Ab in a high percent of them".
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  • English

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