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首页> 外文期刊>DTW:Deutsche Tierarztliche Wochenschrift >Respiratory function in cattle: impact of breed, heritability and external factors.
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Respiratory function in cattle: impact of breed, heritability and external factors.

机译：牛的呼吸功能：品种，遗传力和外部因素的影响。

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摘要

Bovine respiratory disease complex (BRDC) is the most common and costly disease of cattle. The important prevalence of this multifactorial syndrome results from interactions between different pathogens, physical constitution of the host and environmental factors. Because of the strong economical impact of BRDC, it is recommended to complete classical preventive and therapeutic measures by selection of heritable traits improving resistance against respiratory disease and by alternatives based on improved control of environmental factors. The transport of oxygen between the atmospheric air and the mitochondria essentially includes four steps, i.e. (1) respiratory function, including pulmonary ventilation, perfusion and respiratory mechanics, (2) blood circulation and oxygen transport, (3) capillary-cell diffusion and (4) oxygen combustion by mitochondria. Each step should be considered when factors improving resistance against respiratory disease are investigated. This review aims (1) to summarise briefly the anatomical, histological and physiological peculiarities of the bovine respiratory system and (2) to consider the effect of breed, heritability and external factors at each step of the oxygen transport chain, by focussing essentially on respiratory function.
机译：牛呼吸系统疾病综合症（BRDC）是最常见，最昂贵的牛疾病。这种多因素综合症的重要患病率是由不同病原体之间的相互作用，宿主的身体构成和环境因素引起的。由于BRDC具有强大的经济影响，因此建议通过选择可改善对呼吸系统疾病抵抗力的遗传性状以及基于改善的环境因素控制的替代方法，来完成经典的预防和治疗措施。氧气在大气与线粒体之间的运输基本上包括四个步骤，即（1）呼吸功能，包括肺通气，灌注和呼吸力学，（2）血液循环和氧气运输，（3）毛细血管扩散和（ 4）线粒体燃烧氧气。在研究改善对呼吸系统疾病抵抗力的因素时，应考虑每个步骤。这篇综述旨在（1）简要总结牛呼吸系统的解剖学，组织学和生理学特征，以及（2）通过将注意力集中在呼吸系统上，来考虑品种，遗传力和外部因素在氧气输送链每一步的影响功能。

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