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Animal Industry Report

Extension Number

ASL R2062

Topic

Beef

Summary and Implications

The analysis of field data, revealed an estimate of .18 for heritability of resistance to pinkeye and an average decrease in weaning weight of 9.5 kg for infected animals. Tear samples were collected for the 2004 pinkeye season for the analysis of two factors (IgA and Lactoferrin) involved in ocular defense. Significant differences were found between infected and non- infected animals, in the levels of tear fluid IgA.

Copyright Holder

Iowa State University

Language

en

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