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Titlebook: Respiratory Diseases in Cattle; A Seminar in the EEC W. B. Martin Book 1978 ECSC, EEC, EAEC, Brussels-Luxembourg 1978 epidemiology.patholog

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书目名称Respiratory Diseases in Cattle
副标题A Seminar in the EEC
编辑W. B. Martin
视频video
丛书名称Current Topics in Veterinary Medicine
图书封面Titlebook: Respiratory Diseases in Cattle; A Seminar in the EEC W. B. Martin Book 1978 ECSC, EEC, EAEC, Brussels-Luxembourg 1978 epidemiology.patholog
描述Not so many years ago little attention was paid to non-parasitic respiratory diseases of cattle because they seemed of minor importance. However, in the past twenty years, as the number of cattle kept on any farm unit increased under economic pressures, there has been a concomitant rise in the prevalence of respiratory illness. Investigations into cattle respiratory diseases have become a significant part of the research effort in most countries of Europe. Initially much work went into finding, like the alchemist‘s stone, the orgdnism responsible for causing cattle respiratory disease. Many viruses were isolated and over the years a long list of those recovered from the respiratory tract of cattle has been prepared. Unfortunately, few of these viruses on their own are recognised as proven pathogens and no single virus provides the complete aetiological answer to bovine respiratory disease. More recently, perhaps in despair, g~eater attention has been directed to the role of mycoplasma and, additionally. a revival of interest has taken place in the significant part played by bacteria in the later stages of res­ piratory disease. Now, phrases such as "multifactorial disease" are bein
出版日期Book 1978
关键词epidemiology; pathology; physiology
版次1
doihttps://doi.org/10.1007/978-94-009-9750-9
isbn_softcover978-94-009-9752-3
isbn_ebook978-94-009-9750-9
copyrightECSC, EEC, EAEC, Brussels-Luxembourg 1978
The information of publication is updating

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A Serosurvey of Viruses during Outbreaks of Acute Respiratory/Enteric Disease in Swedish Cattle Serum antibodies were found against all tested antigens and the frequency ranged from 20 to 80%. The frequency of significant increases in titre in connection with disease varied for the different viruses between 2% and 7%.
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Variation in the Respiratory Virus Status of Large Bovine Units in Belgiumles from the calves before colostrum feeding and at different ages, were checked for the commonest viruses. Paired sera were also examined when respiratory infections occurred..Results of this study were as follows:
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Respiratory Diseases in Calves — Incidence and Epidemiology in Denmark period a total of 1 010 single calves were born. The rd mortality rate in the herd was 9%. Approximately 85–90% of the fatal cases of rd occurred after the third week of life. Rd accounted for approximately 50% of the economic loss per calf.
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Disease Incidence and Epidemiology — The Situation in the U.K. the period 3 months of age to slaughter was 1.9%..In the period 1970–77 enzootic pneumonia accounted for 50% of 448 deaths recorded on a variety of different farms throughout the UK amongst over 8 000 animals (overall death rate 5.5%). Between 22 and 52% of 5 989 animals were treated for enzootic p
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