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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Abstract

Plasma pepsinogen levels became elevated in groups of 4 recipient calves immediately after adult O. ostertagi were transplanted into the abomasum. These rises occurred in both previously parasite-naive calves and in calves which had experienced prior infection terminated using fenbendazole either 7 ...

Author(s)
McKellar, Q.; Duncan, J. L.; Armour, J.; McWilliam, P.
Citation
Research in Veterinary Science, 1986, 40, 3, pp 367-371
Abstract

Calves infected by surgical transplantation of adult Ostertagia ostertagi had raised levels of plasma pepsinogen, and those in which the largest number of worms became established also had elevated plasma gastrin concentrations. Despite the elevated plasma pepsinogen values, the abomasal pH of the...

Author(s)
McKellar, Q.; Duncan, J. L.; Armour, J.; Lindsay, F. E. F.; McWilliam, P.
Citation
Research in Veterinary Science, 1987, 42, 1, pp 29-34
Abstract

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 challenged with O. ostertagi third stage larvae on five occasions. Using...

Author(s)
McKellar, Q. A.; Eckersall, P. D.; Duncan, J. L.; Armour, J.
Citation
Research in Veterinary Science, 1988, 44, 1, pp 29-32
Abstract

To investigate the pathophysiology of H. placei infection in Friesian calves, 7 calves were divided into 2 groups, 3 uninfected calves (control group) and 4 infected calves. The latter calves were infected orally with 500 H. placei larvae/kg bwt. Five weeks after infection they were all housed in...

Author(s)
Gennari, S. M.; Vieira Bressan, M. C. R.; Rogero, J. R.; MacLean, J. M.; Duncan, J. L.
Citation
Veterinary Parasitology, 1991, 38, 2-3, pp 163-172