Browsing 1962 Onderstepoort Journal of Veterinary Research, Volume 29, 1962 by Author "Horak, Ivan Gerard"

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A modification of standard procedures for evaluating the relative efficacy of anthelmintics

Reinecke, R.K.; Snijders, A.J.; Horak, Ivan Gerard; Jansen, B.C. (Pretoria : Government Printer, 1962)

1. The modified critical test, or so-called short-term slaughter test, was the most suitable means of assessing anthelmintic efficacy on adult Trichostrongylus spp. and O. columbianum. It has some value for O. circumcincta ...
Studies on paramphistomiasis. III. A method of testing the viability of paramphistome metacercariae

Horak, Ivan Gerard; Jansen, B.C. (Pretoria : Government Printer, 1962)

A comparatively rapid and economical method of assessing the viability of P. microbothrium metacercariae was developed by modifying the technique described by Wikerhauser (1960). The effects of various methods of storage ...

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