IgG1 variations in the colostrum of Holstein dairy cows

Animal : an International Journal of Animal Bioscience
Y Le CozlerJ Guinard-Flament

Abstract

High-immune quality colostrum (IgG1 concentration ⩾50 g/l) is crucial for the health and development of the young calf. Studies on colostrum quality tend to focus on external factors such as breed, parity or dry period length, but few have focused on within-cow variations. Here we ran experiments to gain a deeper insight into within-cow variation in IgG1 concentrations in dairy cow colostrum. Trials were performed in an experimental farm, located in the Western part of France. Colostrum from each quarter and a composite sample (mix of four quarters) were concomitantly collected on 77 Holstein dairy cows just after calving to assess the influence of sample type on IgG1 concentrations. Variation in IgG1 concentrations during the first milking was studied on samples from nine cows collected every minute from the start of milking. Repeatability of colostral IgG1 concentration was estimated from 2009 and 2010 data on 16 healthy cows. IgG1 concentrations were tested using a radial immunodiffusion method. Sensitivity and specificity were similar regardless of sample type tested (individual quarter or composite milk). Mean average IgG1 concentration was 54.1 g/l in composite colostrum, and was significantly higher in hind quarter teats...Continue Reading

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Aug 7, 2013·Animal : an International Journal of Animal Bioscience·M ConneelyE Kennedy
Apr 8, 2014·Journal of Dairy Science·Craig R BaumruckerRupert M Bruckmaier

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Citations

Sep 7, 2016·Animal Science Journal = Nihon Chikusan Gakkaihō·Yoshitaka NishijimaShinichi Kume
May 29, 2018·Animal Science Journal = Nihon Chikusan Gakkaihō·Maho IshidaShinichi Kume
Nov 22, 2018·Animal : an International Journal of Animal Bioscience·M McGee, B Earley
Jun 25, 2021·Animal : an International Journal of Animal Bioscience·A CostaM De Marchi
Jul 9, 2021·Frontiers in Nutrition·Ayşenur ArslanSercan Karav

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