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Coordinated and published by The Grassroots Institute, the Grassroots Journal of Natural Resources (GJNR) is an international journal dedicated to the latest advancements in natural resources throughout the world. The goal of this journal is to provide a platform for scientists, social scientists, policy analysts, managers and practitioners (on all academic and professional levels) all over the world to promote, discuss and share various new issues and developments in different arenas of natural resources.
Physiological Justification of Udder Emptying in Highly Productive Cows
Vasyl Ivanovych Kostenko
Department of Milk and Meat Production Technologies, National University of Life and Environmental Sciences, Kyiv, Ukraine. Email: kostenko_vasyl@ukr.net | ORCID: https://orcid.org/0000-0002-7300-215X
Grassroots Journal of Natural Resources, 5(2): 138-147. Doi: https://doi.org/10.33002/nr2581.6853.050209
Received: 11 May 2022
Reviewed: 27 May 2022
Provisionally Accepted: 31 May 2022
Revised: 10 June 2022
Finally Accepted: 15 June 2022
Published: 30 June 2022
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This study encompasses to measure frequency of physiologically motivated emptying the udder by Holstein cows during lactation. With the recording of the hours of the day, the experiment shows that the first-born cows emptied the udder, on average, almost three times a day, the cows having second lactation emptied 2.5 times a day, and cows having 3rd and 4th lactations emptied udder three or more times a day. Analysis of the daily attending a robotic milking machine during lactation by first-born cows showed that the visitation frequency was relatively even, except for the maximum peaks from 11.00 to 12.00 o’clock and from 21.00 to 23.00 o’clock. Similarly, among the cows of the 2nd lactation there were two maximum peaks of milking or udder emptying – at night from 22.00 to 1.00 o'clock and in the day from 12.00 to 17.00 o'clock. For cows having 3rd lactation, there were two maximum peaks of udder emptying - one from 21.00 to 1.00 o'clock at night, and the second from 12.00 to 17.00 o'clock in the afternoon. Cows under 4th lactation had three relatively high maxima: the first from 1.00 to 4.00 o'clock at night, the second from 10.00 to 12.00 o'clock in the afternoon, and the third from 18.00 to 22.00 o'clock at night. This study concludes that high milk productivity of cows needs emptying (milking) of the udder at least three times a day. Since almost a third of udder emptying occurs at night, at that time it is necessary to provide animals with adequate water and feed on the feed table.
Motivated milking; Multiplicity; Udder emptying; Lactation
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Kostenko, V.I. (2022). Physiological Justification of Udder Emptying in Highly Productive Cows. Grassroots Journal of Natural Resources, 5(2): 138-147. Doi: https://doi.org/10.33002/nr2581.6853.050209
Kostenko, V. I. (2022). Physiological Justification of Udder Emptying in Highly Productive Cows. Grassroots Journal of Natural Resources, 5(2), 138-147. https://doi.org/10.33002/nr2581.6853.050209
Kostenko V.I. Physiological Justification of Udder Emptying in Highly Productive Cows. Grassroots Journal of Natural Resources, 2022, 5 (2), 138-147. https://doi.org/10.33002/nr2581.6853.050209
Kostenko, Vasyl Ivanovych. 2022. “Physiological Justification of Udder Emptying in Highly Productive Cows”. Grassroots Journal of Natural Resources, 5 no. 2: 138-147. https://doi.org/10.33002/nr2581.6853.050209
Kostenko, Vasyl Ivanovych. 2022. “Physiological Justification of Udder Emptying in Highly Productive Cows”. Grassroots Journal of Natural Resources, 5 (2): 138-147. https://doi.org/10.33002/nr2581.6853.050209
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