ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (8): 1733-1738.doi: doi: 10.11843/j.issn.0366-6964.2016.08.027

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The Safety Evaluation of Ceftiofur Hydrochloride Intramammary Infusion (Dry Cow)

WU Tong 1,ZHAO Lei-lei 2,ZHANG Dao-kang 2,XU Fei 2,ZHANG Ning 3,JIANG Shan-xiang 4* ,LIU Yi-ming 2*   

  1. (1.College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China;
    2.Feed Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China;
    3.College of Veterinary Medicine,China Agricultural University,Beijing 100193,China;
    4.College of Veterinary Medicine,Nanjing Agricultural University,Nanjing 210095,China)
  • Received:2016-05-26 Online:2016-08-23 Published:2016-08-23

Abstract:

 The aim of the study was to evaluate the safety of Ceftiofur Hydrochloride intramammary infusion (Dry Cow) for dairy cows.Twelve healthy lactating cows (include 6 primiparous cows and 6 multiparous cows) were selected for the research.There were 6 primiparous cows and 6 multiparous cows among them.All the cows had not been treated with any antibiotics by systemic or intramammary administration 30 days before.They were fed with food and water without any antibiotics and under normal conditions.All the cow’s udder regions were injected by the drug of Ceftiofur Hydrochloride intramammary infusions (Dry Cow),and one piece of drug (specification:10 mL/500 mg) was only used for one udder region.The differences of rectal temperature,daily yielding,somatic cells number and the changes of pathogen in milk before and after administration were compared.The changes of clinical symptoms were observed all the time during the experiment.The results showed that there were no significant differences in rectal temperature,daily yielding,somatic cells number before and after administration(P>0.05).The number of pathogen in milk was reduced than before and there was not any new pathogen appeared at the same time.The results indicated that Ceftiofur Hydrochloride intramammary infusion (Dry Cow) have no adverse effects to dairy cows.It was safe to dairy cows when administrated according to the dosing regimen above.

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