Genetic diversity of livestock can help feed a hotter, harsher world

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    Rome – Livestock keepers and policy makers worldwide are increasingly interested in harnessing animal biodiversity to improve production and food security on a warmer, more crowded planet, according to a new FAO report issued today. The agency nonetheless warns that many valuable animal breeds continue to be at risk and calls for stronger efforts to use the pool of genetic resources sustainably.

    According to The Second Report on the State of the World’s Animal Genetic Resources for Food and Agriculture, some 17 percent (1,458) of the world’s farm animal breeds are currently at risk of extinction, while the risk status of many others (58 percent) is simply unknown due to a lack of data on the size and structure of their populations. Nearly 100 livestock breeds have gone extinct between 2000 and 2014.
    Country data shows that indiscriminate cross-breeding is considered as the main cause of genetic erosion. Other common threats to animal genetic diversity are the increasing use of non-native breeds, weak policies and institutions regulating the livestock sector, the decline of traditional livestock production systems, and the neglect of breeds considered not competitive enough.

    Europe and the Caucasus, and North America are the two areas in the world with the highest proportion of at-risk breeds. In absolute terms, the highest number of at-risk breeds can be found in Europe and the Caucasus.
    Both areas are characterized by highly specialized livestock industries that tend to use only a small number of breeds for production.

    Why biodiversity matters

    Genetic diversity provides the raw material for farmers and pastoralists to improve their breeds and adapt livestock populations to changing environments and changing demands.

    “For thousands of years, domesticated animals, like sheep, chickens and camels, have contributed directly to the livelihoods and food security of millions of people,” said FAO Director General José Graziano da Silva, “That includes some 70 percent of the world’s rural poor today.”

    “Genetic diversity is a prerequisite for adaptation in the face of future challenges”, according to the Director-General, who added that the report will “underpin renewed efforts to ensure that animal genetic resources are used and developed to promote global food security, and remain available for future generations.”

    Among the future challenges are climate change, emerging diseases, pressure on land and water, and shifting market demands, which make it more important than ever to ensure animal genetic resources are conserved and used sustainably.

    Currently, some 38 species and 8,774 separate breeds of domesticated birds and mammals are used in agriculture and food production.

    Rise in national gene banks and improved management
    A total of 129 countries participated in the new global assessment, which follows nearly a decade after the release of the first global assessment of animal genetic resources in 2007.

    “The data we’ve collected suggests there’s been improvement in the number of at-risk breeds since the first assessment,” says Beate Scherf, Animal Production Officer at FAO and co-author of the report. “And governments overall have definitely stepped up efforts to halt genetic erosion and more sustainably manage their national livestock breeds.”

    The study finds that governments are increasingly recognizing the importance of sustainably using and developing the genetic resources embodied in livestock.
    When FAO published the first global assessment in 2007, fewer than 10 countries reported having established a gene bank. That number has now risen to 64 countries, and an additional 41 countries are planning to establish such a gene bank, according to the new report.

    And these efforts are bearing fruit, experts say: “Over the last decade, countries across Europe have invested heavily in building shared information systems and gene banks as security measures,” according to Scherf.

    Regional collaborations like the new European Gene Bank Network (EUGENA) are key to managing and improving breeds in the future, she says, and should be supported by in situ conservation of live animals in their natural habitat.
    In situ conservation also recognizes the cultural and environmental value of keeping live populations of diverse animal breeds.

    Some 177 countries additionally have appointed National Coordinators and 78 have set up multi-stakeholder advisory groups to aid national efforts to better manage animal genetic resources.

    source: fao.org

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