Impact of a Sustained-Release lvermectin Bolus on Weight Gain in Breeding age Holstein Heifers under Commercial Pasture Conditions

Authors

  • Vincent Caldwell Département of Clinical Sciences, Faculté de Médecine Vétérinaire Université de Montréal, C.P 5000, Saint-Hyacinthe Québec, Canada, J2S 7C6
  • Luc DesCôteaux Département of Clinical Sciences, Faculté de Médecine Vétérinaire Université de Montréal, C.P 5000, Saint-Hyacinthe Québec, Canada, J2S 7C6

DOI:

https://doi.org/10.21423/aabppro19975887

Keywords:

ivermectin bolus, sustained-release, nematodes, growth, breeding age dairy heifers

Abstract

A sustained-release ivermectin bolus which is available in Canada and European countries (IVOMEC® SR Bolus) has been proved efficient for the treatment and prevention of nematodes in growing beef and dairy cattle. However, its effect on growth in breeding age dairy heifers has not been demonstrated, which leaves practitioners in doubt in regions where heifers are often confined until breeding age and then turned to pasture.

Cover image of the 30th Conference Proceedings: A photo of skyscrapers in Montreal. Yellow background.

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Published

1997-09-18

Issue

1997

Section

Posters

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