Short Communication: Evaluation of a Color Method for Testing Immunoglobulin G Concentration in Goat Colostrum
Open Access
- 1 May 2005
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 88 (5) , 1752-1754
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 20 mg 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.Keywords
This publication has 11 references indexed in Scilit:
- Passive transfer of immunity in kid goats fed refrigerated and frozen goat colostrum and commercial sheep colostrumSmall Ruminant Research, 2004
- Factors Associated with Colostral Specific Gravity in Dairy CowsJournal of Dairy Science, 2001
- Influence of forced contact on the maternal-filial bond in the domestic goat after different periods of post-partum separationSmall Ruminant Research, 1997
- Evaluation of the Hydrometer for Testing Immunoglobulin G1 Concentrations in Holstein ColostrumJournal of Dairy Science, 1994
- Immunoglobulin Concentration, Specific Gravity, and Nitrogen Fractions of Colostrum from Jersey CattleJournal of Dairy Science, 1994
- Specific Gravity of Bovine Colostrum Immunoglobulins as Affected by Temperature and Colostrum ComponentsJournal of Dairy Science, 1992
- Effect of Temperature on Colostrometer Readings for Estimation of Immunoglobulin Concentration in Bovine ColostrumJournal of Dairy Science, 1991
- Immunoglobulin levels and their effect on neonatal survival in sheep and goatsSmall Ruminant Research, 1988
- Hydrometer Test for Estimation of Immunoglobulin Concentration in Bovine ColostrumJournal of Dairy Science, 1980
- Immunochemical quantitation of antigens by single radial immunodiffusionImmunochemistry, 1965