Effect of sustained release and pulse release anthelmintic intraruminal devices on development of pathophysiological changes and parasite populations in calves infected with Ostertagia ostertagi and Cooperia oncophora

P.H. Holmes, K. Bairden, D. McKechnie, G. Gettinby, P.N. McWilliam

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An experiment was conducted in calves to investigate the effect of sustained release and pulse release anthelmintic intraruminal boli on the development of pathophysiological changes following daily infection with Ostertagia ostertagi and Cooperia oncophora for six weeks. After infection various pathophysiological changes were detected including increases in serum pepsinogen concentration, enteric plasma protein losses and in the catabolic rate of albumin. Such changes developed rapidly in the unprotected calves following patency after 17 days and persisted until the termination of the study. There were indications that the sustained anthelmintic release device was more efficacious than the pulse anthelmintic release device in reducing the worm burdens and early pathophysiological changes associated with infection. It was found at necropsy that the release of anthelmintic by the oxfendazole pulse release bolus had been delayed in several calves.
LanguageEnglish
Pages223-226
Number of pages3
JournalResearch in Veterinary Science
Volume51
Issue number2
Publication statusPublished - Sep 1991

Fingerprint

Ostertagia
Cooperia oncophora
Ostertagia ostertagi
Anthelmintics
anthelmintics
Parasites
calves
parasites
Equipment and Supplies
Population
Infection
infection
oxfendazole
Pepsinogen A
pepsinogen
protein depletion
blood proteins
albumins
Blood Proteins
Albumins

Keywords

  • parasitism
  • calves
  • anthelmintic intraruminal boli
  • Ostertagia ostertagi
  • Cooperia oncophora

Cite this

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title = "Effect of sustained release and pulse release anthelmintic intraruminal devices on development of pathophysiological changes and parasite populations in calves infected with Ostertagia ostertagi and Cooperia oncophora",
abstract = "An experiment was conducted in calves to investigate the effect of sustained release and pulse release anthelmintic intraruminal boli on the development of pathophysiological changes following daily infection with Ostertagia ostertagi and Cooperia oncophora for six weeks. After infection various pathophysiological changes were detected including increases in serum pepsinogen concentration, enteric plasma protein losses and in the catabolic rate of albumin. Such changes developed rapidly in the unprotected calves following patency after 17 days and persisted until the termination of the study. There were indications that the sustained anthelmintic release device was more efficacious than the pulse anthelmintic release device in reducing the worm burdens and early pathophysiological changes associated with infection. It was found at necropsy that the release of anthelmintic by the oxfendazole pulse release bolus had been delayed in several calves.",
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Effect of sustained release and pulse release anthelmintic intraruminal devices on development of pathophysiological changes and parasite populations in calves infected with Ostertagia ostertagi and Cooperia oncophora. / Holmes, P.H.; Bairden, K.; McKechnie, D.; Gettinby, G.; McWilliam, P.N.

In: Research in Veterinary Science, Vol. 51, No. 2, 09.1991, p. 223-226.

Research output: Contribution to journalArticle

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AU - Holmes, P.H.

AU - Bairden, K.

AU - McKechnie, D.

AU - Gettinby, G.

AU - McWilliam, P.N.

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AB - An experiment was conducted in calves to investigate the effect of sustained release and pulse release anthelmintic intraruminal boli on the development of pathophysiological changes following daily infection with Ostertagia ostertagi and Cooperia oncophora for six weeks. After infection various pathophysiological changes were detected including increases in serum pepsinogen concentration, enteric plasma protein losses and in the catabolic rate of albumin. Such changes developed rapidly in the unprotected calves following patency after 17 days and persisted until the termination of the study. There were indications that the sustained anthelmintic release device was more efficacious than the pulse anthelmintic release device in reducing the worm burdens and early pathophysiological changes associated with infection. It was found at necropsy that the release of anthelmintic by the oxfendazole pulse release bolus had been delayed in several calves.

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KW - Ostertagia ostertagi

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