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==Pathogens and parasites==
{{See also|Climate change and infectious diseases}}
While climate-induced heat stress can directly reduce domestic animals' immunity against all diseases, climatic factors also impact the distribution of many livestock pathogens themselves. For instance, [[Rift Valley fever]] outbreaks in East Africa are known to be more intense during the times of drought or when there is an [[El Nino]]. Another example is that of [[helminth]]s in Europe which have now spread further towards the poles, with higher survival rate and higher reproductive capacity ([[fecundity]]). Detailed long-term records of both livestock diseases and various agricultural interventions in Europe mean that demonstrating the role of climate change in the increased helminth burden in livestock is actually easier than attributing the impact of climate change on diseases which affect humans.
[[File:FCO-brebis.jpg|thumb|A sheep infected with bluetongue virus]]
Temperature increases are also likely to benefit [[Culicoides imicola]], a species of [[midge]] which spreads [[bluetongue virus]]. [[Ixodes ricinus]], a [[tick]] which spreads pathogens like [[Lyme disease]] and [[tick-borne encephalitis]], is predicted to become 5–7% more prevalent on livestock farms in Great Britain, depending on the extent of future climate change.

Translations:Effects of climate change on livestock/22/en - Revision history

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