This dataset includes 2,270 spectral data from 1,356 cows from Holstein-Friesian from 6 commercial farms located in Catalonia (North-Eastern Spain) and their genetic information on beta-casein, kappa-casein, and beta-lactoglobuline. For each sample, chemical composition (fat, %; protein, %; lactose, %; SCC, cells/mL; SCS, calculated as log2 (SCC/100) + 3) and mid-infrared spectra were registered. The spectral data were acquired using a MilkoScan 7RM (FOSS, Hillerød, Denmark), which operates over the wavelength range from 5,011.54 to 925.92 cm-1 and is routinately standarised following the manufacturer recommendations. The measurements were taken at intervals of 3.85 cm-1, resulting in 1,060 data points per spectrum recorded as pin-numbers from 240 to 1299. MilkoScan 7RM also determined milk composition (fat, protein, and lactose as a percentage), and Fossomatic (FOSS, Hillerød, Denmark) analyzed somatic cell count (SCC).

Microsoft Excel, Version: 2016

Excel (xlsx) file with 2,271 rows and 1073 columns. For more details see published paper S. V. Chirife, E. Albanell, X. Such, and C. L. Manuelian (2025). Mid-infrared spectroscopy can be applied to authenticate A2 milk. Journal of Dairy Science, https://doi.org/10.3168/jds.2025-26500