Browsing 1973 Onderstepoort Journal of Veterinary Research, Volume 40, 1973 by Subject "Ephemeral fever"

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Browsing 1973 Onderstepoort Journal of Veterinary Research, Volume 40, 1973 by Subject "Ephemeral fever"

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  • Effects of ephemeral fever on milk production and reproduction of dairy cattle 
    Theodoridis, A.; Giesecke, W.H.; Du Toit, I.J.; De Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Pretoria : The Government Printer, 1973)
    The effect of ephemeral fever (EF) on the lactation, pregnancy and fertility of 19 dairy cows was studied. During the febrile reaction milk yields were reduced by an average of 58,7 ± 22 %, depending on the stage of lactation ...
  • Studies on the development of a vaccine against bovine ephemeral fever 
    Theodoridis, A.; Boshoff, S.E.T.; Botha, M.J.; De Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Pretoria : The Government Printer, 1973)
    Bovine ephemeral fever virus of low passage level (5th to 8th) in tissue culture has proved to be more antigenic for cattle than higher passage level (17th to 19th) or mouse-brain-adapted virus. However, the neutralizing ...