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Browsing by Author "Armour, J."
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Forms of bovine pepsinogen in plasma from cattle with three different 'syndromes' of Ostertagia ostertagi infection
McKellar, Quintin; Eckersall, P. D.; Duncan, J. L.; Armour, J. (1988-01)Calves infected orally with third stage larvae of Ostertagia ostertagi or infected with adult O ostertagi by direct transplantation into the abomasum had raised plasma pepsinogen activity, as did four-year-old dairy cattle ... -
Further studies on the response to transplanted adult Ostertagia ostertagi in calves
McKellar, Quintin; Duncan, J. L.; Armour, J.; Lindsay, F. E.; McWilliam, P. (1987-01)Calves infected by surgical transplantation of adult Ostertagia ostertagi had raised levels of plasma pepsinogen and those in which the largest number of worms established also had elevated plasma gastrin concentrations. ... -
Production of strains of the sheep parasite Ostertagia circumcincta by implantation of adult parasites into the abomasum of lambs
Scott, E. W.; McKellar, Quintin; Armour, J.; Bairden, K.; Bogan, J. A. (1988-07)The implantation of a single pair of adult parasites of Ostertagia circumcincta via the abomasa of four lambs resulted in the production of 19, 53, 393 and 425 viable larvae after faecal culture using faeces collected from ... -
Response to transplanted adult Ostertagia ostertagi in calves
McKellar, Quintin; Duncan, J. L.; Armour, J.; McWilliam, P. (1986)Plasma pepsinogen levels became elevated in groups of recipient calves immediately after transplant with adult Ostertagia ostertagi. These rises occurred in both previously parasite-naive calves and in calves which had ... -
The sequential development of type I and type II ostertagiasis in young cattle with special reference to biochemical and serological changes
Entrocasso, C.; McKellar, Quintin; Parkins, J. J.; Bairden, K.; Armour, J.; Kloosterman, A. (1986-08)The sequential development of Type I and Type II ostertagiasis over a 2-year period in the same naturally infected cattle is described for the first time. Particular reference is made to biochemical and serological changes. ...