Van Wyk, Jan AucampGerber, H.M.Bigalke, R.D.Cameron, Colin McKenzieGilchrist, Frances M.C.Morren, A.J.Verster, Anna J.M.Verwoerd, Daniel WynandWalker, Jane B.De Kock, V.E.2016-07-072016-07-0720161978Van Wyk, JA & Gerber, HM 1978, 'Recovery of nematodes from ruminants by migration from gastrointestinal ingesta and mucosa gelled in agar : preliminary report’, Onderstepoort Journal of Veterinary Research, vol. 45, no. 1, pp. 29-370330-2465http://hdl.handle.net/2263/54070The articles have been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.When gastro-intestinal ingesta and mucosa containing larvae or adult Haemonchus contortus, Ostertagia circumcincta, Trichostrongylus colubriformis, Strongyloides papillosus, Nematodirus spathiger, Gaigeria pachyscelis, Oesophagostomum columbianum or Chabertia ovina were suspended in 0,75-1,00% agar gel and incubated in physiological saline, a mean of 93,6% of the helminths migrated from the agar-ingesta or agar-mucosa into the physiological saline. The lowest suitable concentration of agar was 0,85-0,90% for one batch of agar and 0,65% for another. Although most of the worms had migrated from the agar gel after 3-4 h of incubation, migration usually continued for longer than 7 h. While low concentrations of formalin partially inhibited migration from the gel, slightly more worms were recovered from agar containing 1 % bile than from agar alone.en© 1978 ARC – Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). © 2016 University of Pretoria. Department of Library Services (digital).Veterinary MedicineVeterinary Medicine -- South AfricaArticle