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Abstract

The objectives of this study were to determine the immunoglobulin G (IgG) content of colostrum on Alberta dairy farms and to determine which on-farm tool, the colostrometer or the Brix refractometer, was more highly correlated with IgG content as determined by radial immunodiffusion (RID)....

Author(s)
Bartier, A. L.; Windeyer, M. C.; Doepel, L.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2015, 98, 3, pp 1878-1884
Abstract

First milking colostrum is already formed in the udder's glandular tissue before calving and is secreted after parturition at the first milking or first suctioning of the neonatal calf. It is distinguished from mature milk above all by the much higher concentration of immunoglobulins (Ig). This...

Author(s)
Gey, R.
Publisher
Mensch & Buch Verlag, Berlin, Germany
Citation
Untersuchung von Einflussfaktoren auf die Qualität und Menge des Erstkolostrums unter Verwendung verschiedener Feldmethoden, 2018, pp vi + 169 pp.
Abstract

Newborn ungulates depend on the timely supply of colostrum containing sufficient immunoglobulins to obtain passive immunity against disease. Brix refractometry enables a rapid on-farm estimation of colostrum quality and has been intensively studied in bovines. However, the suitability of Brix ...

Author(s)
Kessler, E. C.; Bruckmaier, R. M.; Gross, J. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2021, 104, 2, pp 2438-2444
Abstract

Feeding high-quality colostrum is essential for calf health and future productivity. Therefore, accurate assessment of colostrum quality is a key component of dairy farm management plans. Direct and indirect methods are available for assessment of colostrum quality; however, the indirect methods...

Author(s)
Elsohaby, I.; Arango-Sabogal, J. C.; McClure, J. T.; Dufour, S.; Buczinski, S.; Keefe, G. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2021, 104, 4, pp 4703-4714
Abstract

The objectives of this study were to evaluate the performance of the transmission infrared (IR) spectroscopic method and digital and optical Brix refractometers for measurement of colostral IgG concentration and assessment of colostrum quality of dairy cows. Colostrum samples (n=258) were collected ...

Author(s)
Elsohaby, I.; McClure, J. T.; Cameron, M.; Heider, L. C.; Keefe, G. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 2, pp 1427-1435
Abstract

There are few published data on the accurate on-farm diagnosis of failure of transfer of passive immunity (FTPI) in beef-suckler calves. This observational study aimed to evaluate the diagnostic performance and differences among four types of refractometers for assessing FTPI in Chianina...

Author(s)
Pisello, L.; Boccardo, A.; Forte, C.; Pravettoni, D.; D'Avino, N.; Passamonti, F.; Rueca, F.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Italian Journal of Animal Science, 2021, 20, 1, pp 315-323
Abstract

AIMS: To evaluate two different hydrometers and an optical and a digital Brix refractometer for the assessment of bovine colostrum quality, in terms of accuracy and precision compared with the measurement of IgG concentrations using radial immunodiffusion (RID), and to evaluate the reliability and...

Author(s)
Bartens, M. C.; Drillich, M.; Rychli, K.; Iwersen, M.; Arnholdt, T.; Meyer, L.; Klein-Jöbstl, D.
Publisher
Taylor & Francis, Melbourne, Australia
Citation
New Zealand Veterinary Journal, 2016, 64, 5, pp 263-267
Abstract

Background: Heat-treatment of colostrum is a method developed to reduce calf exposure to pathogens. Infrared (IR) spectroscopy and Brix refractometers can be used for measuring colostral IgG concentration and assessing colostrum quality. Objectives: To determine the impact of heat-treatment on...

Author(s)
Elsohaby, I.; McClure, J. T.; Dow, N.; Keefe, G. P.
Publisher
Wiley, Boston, USA
Citation
Journal of Veterinary Internal Medicine, 2018, 32, 1, pp 491-496
Abstract

Colostrum samples of first, second, and third milking were collected from 72 cows. Immunoglobulins were determined by colostrometer, Brix refractometer, online Afilab spectrometer, and ELISA. Correlation of immunoglobulin G level measured by ELISA and colostrometer was 0.79, for Brix 0.76, and for...

Author(s)
Lemberskiy-Kuzin, L.; Lavie, S.; Katz, G.; Merin, U.; Leitner, G.
Publisher
NRC Research Press, Ottawa, Canada
Citation
Canadian Journal of Animal Science, 2019, 99, 3, pp 631-633
Abstract

Background: There is an increased interest in using digital refractometers to indirectly assess colostrum quality of dairy cattle, but knowledge on diagnostic accuracy for Norwegian Red dairy cows is lacking. Recent research has indicated a profound variability in the colostrum quality among dairy ...

Author(s)
Johnsen, J. F.; Sørby, J.; Mejdell, C. M.; Sogstad, Å. M.; Nødtvedt, A.; Holmøy, I. H.
Publisher
BioMed Central Ltd, London, UK
Citation
Acta Veterinaria Scandinavica, 2019, 61, 59, pp (5 December 2019)

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