Effect of Temperature on Colostrometer Readings for Estimation of Immunoglobulin Concentration in Bovine Colostrum

G. D. Mechor, Y. T. Gröhn, Robert John Vansaun

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Effect of temperature on colostrometer readings for estimation of immunoglobulin concentration in bovine colostrum was investigated. Twenty-five colostrum samples were collected within 24 h postpartum from Holstein cows. Immunoglobulin concentration of colostrum was measured using a colostrometer through 5°C increments from 0 to 40°C. Two technicians measured independently a total of 225 samples. The agreement between technicians’ readings was high (r = .98); thus, readings were averaged and used in regression analysis. A final regression model explained 92.5% of the total variation: corrected reading at 20°C = uncorrected reading − 13.2 + .8 × temperature (°C). The regression equation was used to develop a conversion chart for practical field use.

Original languageEnglish (US)
Pages (from-to)3940-3943
Number of pages4
JournalJournal of dairy science
Volume74
Issue number11
DOIs
StatePublished - Jan 1 1991

Fingerprint

cow colostrum
Colostrum
immunoglobulins
Immunoglobulins
Reading
Temperature
technicians
temperature
colostrum
Postpartum Period
regression analysis
Holstein
Regression Analysis
cows
sampling

All Science Journal Classification (ASJC) codes

  • Food Science
  • Animal Science and Zoology
  • Genetics

Cite this

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title = "Effect of Temperature on Colostrometer Readings for Estimation of Immunoglobulin Concentration in Bovine Colostrum",
abstract = "Effect of temperature on colostrometer readings for estimation of immunoglobulin concentration in bovine colostrum was investigated. Twenty-five colostrum samples were collected within 24 h postpartum from Holstein cows. Immunoglobulin concentration of colostrum was measured using a colostrometer through 5°C increments from 0 to 40°C. Two technicians measured independently a total of 225 samples. The agreement between technicians’ readings was high (r = .98); thus, readings were averaged and used in regression analysis. A final regression model explained 92.5{\%} of the total variation: corrected reading at 20°C = uncorrected reading − 13.2 + .8 × temperature (°C). The regression equation was used to develop a conversion chart for practical field use.",
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Effect of Temperature on Colostrometer Readings for Estimation of Immunoglobulin Concentration in Bovine Colostrum. / Mechor, G. D.; Gröhn, Y. T.; Vansaun, Robert John.

In: Journal of dairy science, Vol. 74, No. 11, 01.01.1991, p. 3940-3943.

Research output: Contribution to journalArticle

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T1 - Effect of Temperature on Colostrometer Readings for Estimation of Immunoglobulin Concentration in Bovine Colostrum

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