Changes in climate conditions and their effects on production and reproduction of medium yielding cows in temperate continental climate

IF 1.1 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE Mljekarstvo Pub Date : 2019-10-04 DOI:10.15567/mljekarstvo.2019.0406

S. Borş, I. Ibănescu, Emesse Balla, A. Borș

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引用次数: 1

Abstract

The increased air temperature combined with the reduction of rainfall during hot season impairs the capacity of cows to maintain the optimal body temperature. This study tested the hypothesis that climate changes affect the medium yielding cows in temperate continental climate. The productive-reproductive parameters of 8607 milking cows from a dairy farm in North-eastern Romania were examined and correlated with changes in ambient temperatures and rainfall between the years of 1983 and 2010. We observed that the number of artificial inseminations served to cows showed a decreasing trend. The reduction in this parameter was significantly influenced by the increase in the average and maximum temperatures during hot season associated with the reduction in rainfall, as shown by regression analysis. Other studied parameters such as milk production, calving to conception interval, calving to first artificial insemination interval and conception rates at first, second and more than two services were not related to the changes in average annual temperatures, annual temperatures amplitude and annual precipitation quantities. This study suggests that, although present, the effects of climate changes on some productive-reproductive parameters of medium yielding cows in geographic areas with temperate continental climate are not as dramatic as described in other studies.

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温带大陆性气候条件的变化及其对中等产量奶牛生产和繁殖的影响

高温季节气温升高，加上降雨量减少，削弱了奶牛保持最佳体温的能力。本研究验证了气候变化影响温带大陆性气候中高产奶牛的假设。研究了罗马尼亚东北部一个奶牛场8607头挤奶奶牛的生产繁殖参数，并将其与1983年至2010年期间环境温度和降雨量的变化相关联。我们观察到，为奶牛提供的人工授精数量呈下降趋势。如回归分析所示，该参数的减少受到与降雨量减少相关的炎热季节平均和最高温度增加的显著影响。其他研究参数，如产奶量、产仔至受孕间隔、产仔到第一次人工授精间隔以及第一次、第二次和两次以上服务的受孕率，与年平均温度、年温度幅度和年降水量的变化无关。这项研究表明，尽管气候变化存在，但在温带大陆性气候的地理区域，气候变化对中等产量奶牛的一些生产繁殖参数的影响并不像其他研究中描述的那样显著。

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来源期刊

Mljekarstvo Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

1.90

自引率

41.70%

发文量

审稿时长

12 weeks

期刊介绍： Mljekarstvo is an open access, peer-reviewed international quarterly scientific journal. The first issue was published in 1951, by the Croatian Dairy Operators'' Association (today: Croatian Dairy Union, publisher). In a paper at a Union conference held 28 October 1951 in Zagreb it was said: "Our desire is that this magazine does not meet the fate of its predecessors, but that it continues to reflect the creative efforts and to provide guidelines for the producers as well as all other operators employed in the dairy industry." It is our pleasure today to say that wishes of the enthusiasts who attended the conference have come true, and the magazine Mljekarstvo during the last six decades was a reflection of the creative efforts of numerous dairy scientists and experts, and through its texts it served as a guideline in improving production and processing of milk and dairy products. Mljekarstvo has been following all the achievements of the dairy profession in Croatia, and it also gives the short surveys of world achievements. The result of the research of local and foreign scientists and experts always find their place in the magazine Mljekarstvo. It has been edited by our outstanding dairy experts employed at colleges, research institutions and dairy companies.