Spatial and temporal variation in proximity networks of commercial dairy cattle in Great Britain.
Spatial and temporal variation in proximity networks of commercial dairy cattle in Great Britain.
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英国商业奶牛邻近网络的时空变化。
DOI：
10.1016/j.prevetmed.2021.105443
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发表时间：
2021-09
影响因子：
2.6
通讯作者：
McDonald RA
中科院分区：
文献类型：
--
作者：
Fielding HR;Silk MJ;McKinley TJ;Delahay RJ;Wilson-Aggarwal JK;Gauvin L;Ozella L;Cattuto C;McDonald RA
我们分析了奶牛的高分辨率邻近网络和GPS定位。接触率在时间和空间上差异很大，而且与畜牧业有关。在建筑物中，联系更频繁、时间更长。很少有奶牛表现出一致的关系。当允许自由进入整个农场时，奶牛在接触方面表现出更大的差异。宿主之间接触的性质对于促进或阻碍病原体在种群内的传播可能是重要的。通过宿主之间的接触构建的网络可以检查个体差异如何影响感染的传播。研究在不同条件下管理的牲畜物种的联系网络可以进一步洞察它们对这些联系结构的影响。我们收集了来自七个奶牛群的九组家牛(平均群体大小为85)的高分辨率邻近和GPS定位数据，这些牛采用了一系列放牧和住房制度。网络由不同的时间窗口(2小时、24小时和大约1周)和农场内的位置聚集的牛接触者(由接近度定义)构成。在整个研究中聚集的联系人网络高度饱和，但按空间和时间划分联系人显示出牛之间互动的巨大差异。奶牛在接触的频率和接触的奶牛数量方面显示出统计上的显著差异。当牛在建筑物中时，与牧场相比，接触时间更长，牛与其他牛接触的次数更多。少数牛表现出一致的关系，但大多数牛没有。在管理层允许自由进入所有农场区域的一组中，奶牛表现出不同步的空间使用，在牧场时，与其他奶牛接触较少，而且个体之间接触的差异比其他组大得多。我们强调了管理(例如放牧、挤奶)的变化在很大程度上改变了牛的接触模式，对感染传播和社会互动具有潜在的重大影响。特别是，在每头奶牛可以自由选择环境的情况下，由此产生的接触网络可能具有风险较低的结构，可以降低感染直接传播的可能性。
We analysed high resolution proximity networks and GPS locations of dairy cattle. Contact rates varied markedly in time and space, and in relation to husbandry. Contacts were more frequent and longer in buildings. Few cows exhibited evidence of consistent relationships. When given free access across the farm, cows showed greater variation in contacts. The nature of contacts between hosts can be important in facilitating or impeding the spread of pathogens within a population. Networks constructed from contacts between hosts allow examination of how individual variation might influence the spread of infections. Studying the contact networks of livestock species managed under different conditions can additionally provide insight into their influence on these contact structures. We collected high-resolution proximity and GPS location data from nine groups of domestic cattle (mean group size = 85) in seven dairy herds employing a range of grazing and housing regimes. Networks were constructed from cattle contacts (defined by proximity) aggregated by different temporal windows (2 h, 24 h, and approximately 1 week) and by location within the farm. Networks of contacts aggregated over the whole study were highly saturated but dividing contacts by space and time revealed substantial variation in cattle interactions. Cows showed statistically significant variation in the frequency of their contacts and in the number of cows with which they were in contact. When cows were in buildings, compared to being on pasture, contact durations were longer and cows contacted more other cows. A small number of cows showed evidence of consistent relationships but the majority of cattle did not. In one group where management allowed free access to all farm areas, cows showed asynchronous space use and, while at pasture, contacted fewer other cows and showed substantially greater between-individual variation in contacts than other groups. We highlight the degree to which variations in management (e.g. grazing access, milking routine) substantially alter cattle contact patterns, with potentially major implications for infection transmission and social interactions. In particular, where individual cows have free choice of their environment, the resulting contact networks may have a less-risky structure that could reduce the likelihood of direct transmission of infections.
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影响因子：
4.6
作者：
Chen S;White BJ;Sanderson MW;Amrine DE;Ilany A;Lanzas C
通讯作者：
Lanzas C
影响因子：
2.3
作者：
Charlton, Gemma L.;Rutter, Steven Mark;Sinclair, Liam A.
通讯作者：
Sinclair, Liam A.
影响因子：
3.5
作者：
Beggs, D. S.;Jongman, E. C.;Fisher, A. D.
通讯作者：
Fisher, A. D.
影响因子：
3.3
作者：
Courcoul, Aurelie;Ezanno, Pauline
通讯作者：
Ezanno, Pauline
影响因子：
3.7
作者：
Cattuto C;Van den Broeck W;Barrat A;Colizza V;Pinton JF;Vespignani A
通讯作者：
Vespignani A