Loading...
Use of clinic refractometer at farm as a tool to estimate the IgG content in goat colostrum
Castro, Noemí Gómez-González, Lenny Andrea Earley, Bernadette Argüello, Anastasio
Castro, Noemí
Gómez-González, Lenny Andrea
Earley, Bernadette
Argüello, Anastasio
Citations
Altmetric:
Keywords
Date
2018-11-22
Collections
Files
Loading...
main article
Adobe PDF, 1.12 MB
Research Projects
Organizational Units
Journal Issue
Citation
Noemí Castro, Lenny Andrea Gómez-González, Bernadette Earley & Anastasio Argüello (2018) Use of clinic refractometer at farm as a tool to estimate the IgG content in goat colostrum, Journal of Applied Animal Research, 46:1, 1505-1508, DOI: 10.1080/09712119.2018.1546585
Abstract
Refractometry has been proposed as a farm technique to estimate the IgG concentration in colostrum. In order to validate the method in goat colostrum using a clinical refractometer, 216 colostrum and milk samples were obtained from 54 dairy goats. Samples were evaluated for protein concentration using a clinical refractometer and IgG concentration was measured using a commercial ELISA. The r2 for the linear regression between refractometry value and IgG concentration measured by ELISA was 0.79, and the area under the receiver operating characteristics curve was 0.99. The proposed cut-off value using the clinical refractometer was 10 mg/mL. At this point, the sensitivity, specificity, negative predictive value, positive predictive value, Youden’s index and accuracy were 100%, 95.19%, 100%, 76.32%, 0.95% and 95.83%, respectively.