Climate impacts on reproductive performance of Romanov sheep in the moderate climate

Authors

  • Dražen Đuričić DMV, PhD, Assistant Professor https://orcid.org/0000-0002-8013-2091
  • Attila Dobos DMV
  • Jozo Grbavac Faculty of Agriculture and Food Technology, University of Mostar, Mostar, Bosnia and Herzegovina.
  • Charlotte Stiles Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia.
  • Iva Bacan DMV, Faculty of Veterinary Medicine University of Zagreb
  • Željko Vidas
  • Franjo Marković DMV,PhD
  • Predrag Kočila TSH Čakovec, Čakovec, Croatia.
  • Marko Samardžija Faculty of Veterinary Medicine University of Zagreb https://orcid.org/0000-0003-0402-3173

DOI:

https://doi.org/10.31893/jabb.22001

Keywords:

air temperature, rainfall precipitation, reproduction, small ruminant, sunlight

Abstract

This study aimed to investigate the climatological impacts of air temperature, sunshine duration, and rain precipitation, in a moderate climate, on the reproductive performance of Romanov sheep in the continental part of Croatia, during two consecutive years (2019-2020). Our study included 549 matings with 520 successful conceptions at 5 Romanov sheep farms, and the fertility rate was 94.72%. The percentage of lambs delivered in winter was 53.27% (n = 277), in spring 20.19% (n = 105), in summer 14.23% (n = 74) and 12.31% in autumn (n = 64). According to percentile ranks and classification ratings, thermal conditions have been described as very warm (during 2019-2020), while precipitation conditions, expressed in percentiles, were wet (during 2019) but dry (during 2020) for this region. The peak of sexual activity was from mid-August until October in 2019 and from the end of August to November in 2020 for Romanov sheep in northwestern (NW) Croatia. A Kruskal-Wallis test showed a statistically significant difference in the number of pregnant ewes during the different mating seasons in the year (p < 0.001). Therefore, we can assume that air temperature, precipitation volume, and sunshine duration during the different seasons could impact the reproductive performance of Romanov sheep in a moderate climate.

Author Biography

Dražen Đuričić, DMV, PhD, Assistant Professor

                   

Clinic of Obstetrics and Reproduction

Veterinary Faculty, University of Zagreb,

Heinzelova 55, 10000 Zagreb, Croatia

and

Mount-trade d.o.o. Garešnica, Croatia

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Monthly air temperature, rainfall precipitation, sunshine duration and number of Romanov sheep in heat during 2019-2020, in NW Croatia.

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Published

2021-09-27

How to Cite

Đuričić, D., Dobos, A. ., Grbavac, J., Stiles, C. ., Bacan, I., Vidas, Željko, Marković, F., Kočila, P., & Samardžija, M. (2021). Climate impacts on reproductive performance of Romanov sheep in the moderate climate. Journal of Animal Behaviour and Biometeorology, 10(1), 2201. https://doi.org/10.31893/jabb.22001

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Section

Research Article