在乌克兰大陆性气候的炎热夏季条件下，棕色瑞士奶牛比荷斯坦奶牛更耐热

IF 1.8 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Journal of Animal Behaviour and Biometeorology Pub Date : 2021-07-31 DOI:10.31893/jabb.21034

R. Mylostyvyi, O. Lesnovskay, L. Karlova, O. Khmeleva, O. Кalinichenko, O. Orishchuk, S. Tsap, N. Begma, N. Cherniy, B. Gutyj, O. Izhboldina

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引用次数: 37

摘要

寻找耐高温的牲畜品种可能是减轻全球气候变化对奶牛养殖影响的策略之一。在本次调查中，我们在乌克兰炎热的夏季条件下，研究了两个商业奶牛场的荷斯坦奶牛(HB)和布朗瑞士奶牛(BS)的耐热性。动物的生理反应是通过在舒适条件下的上午(4:00 ~ 6:00)和热负荷时的下午(14:00 ~ 16:00)测量直肠温度(RT)和呼吸频率(RR)来确定热阻。温湿指数(THI)用于表征自然通风室内的天气条件和小气候。发现BS牛具有耐热性。HB奶牛对高温的反应表现为RT和RR的较高生长，夏季单头奶牛日产奶量损失显著。进一步的研究将需要阐明奶牛耐热性差异的生物学和遗传机制。

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Brown Swiss cows are more heat resistant than Holstein cows under hot summer conditions of the continental climate of Ukraine

Finding livestock breeds that are resistant to high temperatures may be one of the strategies for mitigating the impact of global climate change on dairy farming. In this investigation, we studied the heat resistance of Holstein (HB) and Brown Swiss (BS) cows on two commercial dairy farms under the hot summer conditions of Ukraine. The physiological response of animals determined heat resistance by measuring rectal temperature (RT) and respiratory rate (RR) in the morning (from 4:00 to 6:00) in comfortable conditions and the afternoon (from 14:00 to 16:00), during heat load. The temperature-humidity index (THI) was used to characterize weather conditions and microclimate in naturally ventilated rooms (NVBs). BS cows were found to be heat resistant. The reaction of HB cows to the heat was manifested by higher growth of RT and RR, and they suffered significant losses in the daily milk yield per cow in the summer. Further research will need to elucidate the biological and genetic mechanisms of the identified breed differences in heat tolerance of dairy cows.

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来源期刊

Journal of Animal Behaviour and Biometeorology Environmental Science-Ecology

CiteScore

4.00

自引率

9.50%

发文量

期刊介绍： The Journal of Animal Behaviour and Biometeorology (ISSN 2318-1265) is the official journal of the Center for Applied Animal Biometeorology (Brazil) currently published by Malque Publishing. Our journal is published quarterly, where the published articles are inserted into areas of animal behaviour, animal biometeorology, animal welfare, and ambience: farm animals (mammals, birds, fish, and bees), wildlife (mammals, birds, fish, reptiles, and amphibians), pets, animals in zoos and invertebrate animals. The publication is exclusively digital and articles are freely available to the international community. Manuscript submission implies that the data are unpublished and have not been submitted for publication in other journals. JABB publishes original articles in the form of Original Articles, Short Communications, and Reviews. Original Articles arising from research work should be well grounded in theory and execution should follow the scientific methodology and justification for its objectives; Short Communications should provide sufficient results for a publication in accordance with the Research Article; Reviews should involve the relevant scientific literature on the subject. JABB publishes articles in English only. All articles should be written strictly adopting all the rules of spelling and grammar.