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Volume 19, Number 6—June 2013

Colostrum Replacer and Bovine Leukemia Virus Seropositivity in Calves

Bhudipa ChoudhuryComments to Author , Christopher Finnegan, Jean-Pierre Frossard, Chris Venables, and Falko Steinbach
Author affiliations: Animal Health and Veterinary Laboratories Agency, New Haw, Surrey, UK

Main Article


Bovine leukemia virus seropositivity of calves fed colostrum replacer, UK, 2009*

Location Time from initial sampling, mo
0 1 2 3 4
Dumfriesshire, Scotland
Calf 1 +++ ++ + IC
Calf 2

Newport, Wales
Calf 1

Yorkshire, England
Calf 1 ++ + + NS
Calf 2 ++ + + NS

*Tested by ELISA (Institute Pourquier, Montpellier, France). +++, strong positive, sample to positive (S/P) ratio >200; ++, positive, S/P ratio >100; +: weak positive, S/P ratio 60–99; –, negative, S/P ratio <60; IC, inconclusive, S/P ratio 60–70; NS, not sampled.

Main Article

Page created: May 20, 2013
Page updated: May 20, 2013
Page reviewed: May 20, 2013
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.