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Short Communication: Evaluation of a Color Method for Testing Immunoglobulin G Concentration in Goat Colostrum

Authors
Journal
Journal of Dairy Science
0022-0302
Publisher
American Dairy Science Association
Volume
88
Issue
5
Identifiers
DOI: 10.3168/jds.s0022-0302(05)72849-6
Keywords
  • Nutrition
  • Feeding
  • And Calves

Abstract

Abstract Colostrum samples (n=1084) of first and second milking from Majorera goats were taken. The immunoglobulin (Ig) G concentrations estimated by measurement of the color of goat colostrum and by the radial immunodiffusion technique were compared. Least squares analysis of the relationship between the color measurement method and IgG concentration resulted in a significant linear relationship. Using 20mg of IgG/ mL of colostrum as the cut-off point for colostrum selection, the sensitivity, specificity, and negative predictive value of the color method as a test of IgG concentration in goat colostrum were 93.03, 71.43, and 78.12%, respectively.

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