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Article Abstract
The objective of this study was the evaluation of the locomotion activity of heifers and Holstein dairy cows during estrus. We have analyzed the locomotion activity using the Heatime RuminAct device on 180 cows (32 heifers and 148 dairy cows) and we evaluated a total of 633 estrus cycles during the reference period of 3 days before estrus, 3 days after estrus, and on the day ofestrus occurrence. The datawere analyzed using the DataFlowTM II program. The locomotion of cows was expressed in the units of locomotion activity in 24 h (u.24 h). During the reference period of 3 days before estrus, the cows showed locomotion activity of 558 u.24 h, with an increase in locomotion activity on the day of estrus of 836 u.24 h, and, during the reference period of 3 days after estrus, the level of locomotion activity decreased to 537 836 u.24 h, which is a similar level of locomotion activity to the reference period before estrus. Through the statistical analysis, we evaluated the impact of parity, lactation stage, milk yield, and individuality on changes in locomotion activity during estrus and throughout the reference period, and we found a significant effect of parity (F = 13.41, < 0.001) on changes in the locomotion activity of dairy cows during estrus. Based on these results, this research offers fresh perspectives on assessing specific factors affecting the locomotion activity of dairy cows during estrus through the practical application of electronic systems for estrus detection on dairy farms.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11117332 | PMC |
| http://dx.doi.org/10.3390/ani14101421 | DOI Listing |
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