Variations in automatically recorded rumination time as explained by variations in intake of dietary fractions and milk production, and between-cow variation

Journal of Dairy Science
M V ByskovP Nørgaard

Abstract

Individual recording of rumination time (RT) is now possible in commercial dairy herds, through development of a microphone-based sensor, which is able to record RT by the sound of rumination activity. The objectives of this study were to examine the relationship between daily RT and intakes of different dietary fractions, the relationship between RT in minutes per kilogram of dry matter intake (DMI) and milk production, and to examine the variation in RT within and between mid-lactating dairy cows. Data from 3 production trials were used in which a total of 27 different diets were fed. The data contained 761, 290, and 203 daily recordings of RT, milk yield, milk components, DMI, and intake of dietary fractions recorded on 29, 26, and 24 Holstein and Swedish Red cows from trials 1, 2, and 3, respectively. The dietary fractions included forage neutral detergent fiber (NDF), concentrate NDF, crude protein, sugar, starch, and the remaining fraction represented by organic matter--(forage NDF+concentrate NDF+crude protein+sugar+starch). The relationship between the dietary fractions and RT was analyzed in 2 steps. In step 1, the dietary fractions, which were significantly related to RT, were selected and simultaneously checked for m...Continue Reading

References

Oct 1, 1983·Journal of Dairy Science·D H BaeB E Gilman
Apr 1, 1994·Journal of Dairy Science·K A Beauchemin, L M Rode
Jul 1, 1997·Journal of Dairy Science·D R Mertens
Jun 11, 2002·Annual Review of Nutrition·Barbara A HorwitzRoger B McDonald
Nov 20, 2009·Journal of Dairy Science·K SchirmannW Heuwieser
May 23, 2012·Journal of Dairy Science·K SchirmannM A G von Keyserlingk

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Citations

Aug 9, 2016·International Journal of Biometeorology·Fabio Abeni, Andrea Galli
Oct 8, 2018·Journal of Dairy Science·L ZetouniP Løvendahl
Jul 27, 2020·Translational Animal Science·Glenda M Pereira, Bradley J Heins
Jun 6, 2017·Animal : an International Journal of Animal Bioscience·R MorettiR Bozzi
Jun 7, 2021·Animal : an International Journal of Animal Bioscience·Niclas HögbergJohan Höglund

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