Zobrazeno 1 - 8
of 8
pro vyhledávání: '"W J, Ehret"'
Publikováno v:
Journal of the South African Veterinary Association. 61(1)
Of 392 heifers vaccinated between 4 and 9.5 months of age and tested at 22 months or older, 3 (0.77%) had titres in the complement fixation test of between 30 and 98 international units per millilitre. The results confirm that persistent serological
Publikováno v:
Journal of the South African Veterinary Association. 60(3)
A survey of erythrocyte glutathione peroxidase (GPx) activity was undertaken in a herd of crossbred cattle after 3 cases of white muscle disease had been diagnosed. All animals examined, appeared to be deficient in selenium, relative to control anima
Publikováno v:
Journal of the South African Veterinary Association. 46(2)
Chlamydial infection in a large beef herd is illustrated and discussed. The pre-natal and post-natal losses that occurred during 1972 are highlighted. Total pre-natal losses for the nine calving herds comprising 2,915 animals varied between 3,7% and
Publikováno v:
Journal of the South African Veterinary Association. 57(4)
In the 427 heifers vaccinated at 12 to 14 months of age with the reduced dose (3 X 10(8) to 1 X 10(9) viable organisms per dose) 3 had antibody titres in the complement fixation test of 196, 688 and 748 IU ml-1, respectively, at 5 months post-inocula
Publikováno v:
Journal of the South African Veterinary Association. 58(3)
In two consecutive years a total of 3810 calves were inoculated with the Onderstepoort redwater live-blood vaccine, containing attenuated strains of Babesia bigemina and Babesia bovis. Twenty calves died 8-13 days later due to B. bigemina-infection.
Publikováno v:
Journal of the South African Veterinary Association. 45(1)
Publikováno v:
Journal of the South African Veterinary Association. 46(3)
The effects of locality on the copper, iron, manganese, zinc and magnesium levels in 407 bovine caudate lobe liver samples preserved in formalin for differing storage periods were examined. The mineral determinations, expressed on the wet basis (WB),
Publikováno v:
Journal of the South African Veterinary Association. 44(3)