خيارات البحث
النتائج 1 - 10 من 17
The effect of tick control on the epidemiology of bovine babesiosis
1983
De Vos, A.J. | Potgieter, F.T.
Babesia bovis, B. bigemina, cattle, effect of tick control on infection rates and on enzootic stability, survey of farms from 6 geographical regions, control of ticks is not justified economically as means of minimizing risks of babesiosis outbreaks unless regular dipping is necessary to limit damage done by ticks per se
اظهر المزيد [+] اقل [-]Demonstration of colonies of Anaplasma marginale in the midgut of Rhipicephalus simus
1983
Potgieter, F.T. | Kocan, K.M. | McNew, R.W. | Ewing, S.A.
Rhipicephalus simus, 5 types of Anaplasma marginale colonies demonstrated in midgut
اظهر المزيد [+] اقل [-]Observations on the transmission of Theileria mutans in South Africa
1981
De Vos, A.J. | Roos, J.A.
Theileria mutans, 4 isolates obtained from geographically distant parts of South Africa by subinoculation of infected blood were readily transmitted to cattle by Amblyomma hebraeum, all attempts to transmit these isolates with Rhipicephalus appendiculatus were unsuccessful
اظهر المزيد [+] اقل [-]The retention of Babesia bigemina infection by Boophilus decoloratus exposed to imidocarb dipropionate during engorgement
1981
Gray, J.S. | Potgieter, F.T.
Babesia bigemina infection in population of Boophilus decoloratus cannot be eliminated in short term by treating cattle prophylactically with imidocarb dipropionate, Babesia retained by ticks for at least complete generation
اظهر المزيد [+] اقل [-]Some effects of 60CO irradiation on Cowdria ruminantium in its tick host Amblyomma hebraeum Koch (Acarina: Ixodidae)
1981
Amblyomma hebraeum, 60CO irradiation of nymphs failed to attenuate Cowdria ruminatium
اظهر المزيد [+] اقل [-]Influence of parasitemia level at feeding on development of Anaplasma marginale Theiler in Dermacentor andersoni Stiles
1983
Kocan, K.M. | Holbert, D. | Ewing, S.A. | Hair, J.A. | Barron, S.J.
influence of parasitemia level of calves at time of feeding by Dermacentor andersonii upon development of Anaplasma marginale in the ticks
اظهر المزيد [+] اقل [-]Influence of increased temperature on Anaplasma marginale Theiler in the gut of Dermacentor andersoni Stiles
1982
Kocan, K.M. | Barron, S.J. | Holbert, D. | Ewing, S.A. | Hair, J.A.
Dermacentor andersoni, transmission of Anaplasma marginale to splenectomized calves by injection of gut homogenates from incubated vs. non-incubated adult ticks
اظهر المزيد [+] اقل [-]Studies on a bovine Babesia transmitted by Hyalomma marginatum rufipes Koch, 1844
1981
Gray, J.S. | De Vos, A.J.
Babesia occultans n. sp. originally obtained from engorged female Hyalomma marginatum rufipes collected from cattle in Northern Transvaal, transmission studies in laboratory strain of ticks and splenectomized cattle, morphological, serological, and cross-immunity studies distinguished parasite as previously undescribed species highly infective for H. marginatum rufipes but of low virulence in cattle, unsuccessful attempt to transmit transovarially with Boophilus microplus
اظهر المزيد [+] اقل [-]Staining characteristics of colonies of Anaplasma marginale Theiler in Dermacentor andersoni Stiles
1981
Oberst, R.D. | Kocan, K.M. | Hair, J.A. | Ewing, S.A.
Anaplasma marginale, several techniques used to determine effectiveness of stains for demonstrating colonies of Anaplasma in Dermacentor andersoni
اظهر المزيد [+] اقل [-]Isolation of Anaplasma marginale from Rhipicephalus simus males
1980
Potgieter, F.T. | Van Rensburg, L.
Anaplasma marginale, transstadial transmission by Rhipicephalus simus, successful transmission to oxen by tick stabilate prepared from infected male ticks
اظهر المزيد [+] اقل [-]