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Browsing 1980 Onderstepoort Journal of Veterinary Research, Volume 47, 1980 by Author

Browsing 1980 Onderstepoort Journal of Veterinary Research, Volume 47, 1980 by Author "Gerber, H.M."

Now showing items 1-4 of 4

Benzimidazole-resistant Haemonchus contortus-the effect of cryopreservation on the resistance of Successive generations

Van Wyk, Jan Aucamp; Gerber, H.M.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by the Government Printer, Pretoria., 1980)

Infective larvae (L3) of a strain of benzimidazole-resistant Haemonchus contortus were stored in the gas phase of liquid nitrogen, thawed and used to infest worm-free sheep from which, in turn, larvae were cultured, frozen ...
A field strain of Haemonchus contortus showing slight resistance to rafoxanide

Van Wyk, Jan Aucamp; Gerber, H.M.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by the Government Printer, Pretoria., 1980)

A field strain of H. contortus, already resistant to benzimidazole anthelmintics, was also found to be slightly resistant to rafoxanide. This is apparently the first report of resistance to rafoxanide in a field strain of ...
Survival and development of larvae of the common nematodes of ruminants after long-term cryopreservation and investigation of different routes of infestation

Van Wyk, Jan Aucamp; Gerber, H.M.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by the Government Printer, Pretoria., 1980)

Exsheathed infective larvae (L3) of 16 species of nematodes were tested for infectivity in either sheep or cattle after they had been frozen and stored in 0,09% NaCl solution in the gas phase of liquid nitrogen for periods ...
A technique for the recovery of nematodes from ruminants by migration from gastro-intestinal ingesta gelled in agar : large scale application

Groeneveld, Hendrik T.; Van Wyk, Jan Aucamp; Gerber, H.M.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by the Government Printer, Pretoria., 1980)

A gelled-agar technique for worm recovery was adapted to facilitate the recovery of larval and adult nematodes from the total ingesta of large numbers of sheep. The technique was also used to recover nematodes from 4 calves. ...

Now showing items 1-4 of 4

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Browsing 1980 Onderstepoort Journal of Veterinary Research, Volume 47, 1980 by Author "Gerber, H.M."

Browsing 1980 Onderstepoort Journal of Veterinary Research, Volume 47, 1980 by Author "Gerber, H.M."

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