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KMID : 1023520080310040533
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Korean Journal of Veterinary Service
2008 Volume.31 No. 4 p.533 ~ p.546
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Studies on immunotherapy to calves with failure of colostrum passive transfer using bovine immune sera
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Lee Jung-Sun
Kang Mun-Il
Chung Yong-Un
Lee Chai-Yong
Han Dong-Un
Wee Sung-Hwan
Yoon So-Rah
Cho Jae-Jin
Kang Ju-Won
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Abstract
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The efficacy of bovine immune sera to correct the calves with failure of passive transfer(FPT) was evaluated. Immune sera were produced from 14 one-year-old Holstein cattle which were inoculated commercial combined viral vaccine, administered by the challenge of some main enteric or respiratory viruses, aseptically filtered and stored at before used. After the treatment of bovine immune sera, Mean transfer factor(, of IgG administered/kg of body weight) was in K-IP, H-IP and K-IV group, respectively. The corrective effect of bovine immune sera to FPT calf without any clinical signs showed that intravenous route was more effective than intraperitoneal administration(P<0.01). FPT calves with severe signs were not effective response to the immunotherapy used and consequently died within 10 days after the treatment. Ten percentage of controls appeared the clinical signs including diarrhea. On the contrary, there were not any clinical signs in K-IP and H-IV group. There was significant increase of the neutralizing titer against bovine viral diarrhea virus and bovine coronavirus as well as of cell population including CD2, CD4, and monocyte in K-IP and H-IV group after the immunotherapy(P<0.05). Also, K-IP and H-IV group showed the successful correction to FPT within one week after the immunotherapy, but controls had kept the FPT two-four weeks even after the same treatment. Consequently, the results were suggesting that the bovine immune sera could be used the corrective tool to young calves with FPT
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KEYWORD
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Failure of passive transfer(FPT), Bovine immune sera, Immunoglobulin(IgG), Immunotherapy
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