Seasonal Dynamics of Cattle Reproduction in the North

Seasonal Dynamics of Cattle Reproduction in the North Russian Journal of Ecology, Vol. 35, No. 3, 2004, pp. 205–208. Translated from Ekologiya, No. 3, 2004, pp. 235–238. Original Russian Text Copyright © 2004 by Borisenkov, Kalinin, Vakhnina. SHORT COMMUNICATIONS M. F. Borisenkov, A. I. Kalinin, and N. A. Vakhnina Institute of Physiology, Komi Scientific Center, Ural Division, Russian Academy of Sciences, ul. Pervomaiskaya 50, Syktyvkar, 167982 Russia Received April 10, 2003 Key words: North, cow, calving frequency, conception frequency, seasonal dynamics, geomagnetic activity. Many authors have noted seasonal changes in the 100%). The resulting temporal series were smoothed reproductive function of polyestral animals, for with a fifth-degree polynomial to remove “noise.” The instance, cows. It is supposed that the seasonal dynam- seasonal dynamics of calving frequency were assessed ics of reproduction in cattle is governed by the condi- by plotting the dependence of the total number of calv- tions of their keeping and feeding. At the same time, ings over the entire study period on the month of the there is evidence that the reproductive function of cows year and the dynamics of conception frequency, by depends on meteorological conditions (Vlasov, 1996). shifting the plot of calvings to the left along the tempo- The data on the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Ecology Springer Journals

Seasonal Dynamics of Cattle Reproduction in the North

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Publisher
Springer Journals
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Ecology
ISSN
1067-4136
eISSN
1608-3334
D.O.I.
10.1023/B:RUSE.0000025973.96876.18
Publisher site
See Article on Publisher Site

Abstract

Russian Journal of Ecology, Vol. 35, No. 3, 2004, pp. 205–208. Translated from Ekologiya, No. 3, 2004, pp. 235–238. Original Russian Text Copyright © 2004 by Borisenkov, Kalinin, Vakhnina. SHORT COMMUNICATIONS M. F. Borisenkov, A. I. Kalinin, and N. A. Vakhnina Institute of Physiology, Komi Scientific Center, Ural Division, Russian Academy of Sciences, ul. Pervomaiskaya 50, Syktyvkar, 167982 Russia Received April 10, 2003 Key words: North, cow, calving frequency, conception frequency, seasonal dynamics, geomagnetic activity. Many authors have noted seasonal changes in the 100%). The resulting temporal series were smoothed reproductive function of polyestral animals, for with a fifth-degree polynomial to remove “noise.” The instance, cows. It is supposed that the seasonal dynam- seasonal dynamics of calving frequency were assessed ics of reproduction in cattle is governed by the condi- by plotting the dependence of the total number of calv- tions of their keeping and feeding. At the same time, ings over the entire study period on the month of the there is evidence that the reproductive function of cows year and the dynamics of conception frequency, by depends on meteorological conditions (Vlasov, 1996). shifting the plot of calvings to the left along the tempo- The data on the

Journal

Russian Journal of EcologySpringer Journals

Published: Oct 18, 2004

References

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