03190naa a2200589 a 450000100080000000500110000800800410001902400250006010000170008524501840010226000090028650001050029552014210040065300190182165300230184065300220186365300190188565300220190465300230192665300320194970000260198170000140200770000150202170000170203670000160205370000160206970000180208570000170210370000170212070000150213770000180215270000140217070000180218470000160220270000170221870000160223570000160225170000150226770000140228270000170229670000150231370000150232870000180234370000170236170000160237870000180239470000140241270000150242670000140244170000160245577301290247110616772021-01-22       2021    bl uuuu     u00u1 u    #d7 a10.1071/RD202052DOI1 aRIVERO, M.J.  aKey traits for ruminant livestock across diverse production systems in the context of climate changebperspectives from a global platform of research farms.h[electronic resource]  c2021  aArticle history: Published online 8 January 2021. Corresponding author: michael.lee@rothamsted.ac.uk  aAbstract: Ruminant livestock are raised under diverse cultural and environmental production systems around the globe. Ruminant livestock can play a critical role in food security by supplying high-quality, nutrient-dense food with little or no competition for arable land while simultaneously improving soil health through vital returns of organic matter. However, in the context of climate change and limited land resources, the role of ruminant-based systems is uncertain because of their reputed low efficiency of feed conversion (kilogram of feed required per kilogram of product) and the production of methane as a by-product of enteric fermentation. A growing human population will demand more animal protein, which will put greater pressure on the Earth?s planetary boundaries and contribute further to climate change. Therefore, livestock production globally faces the dual challenges of mitigating emissions and adapting to a changing climate. This requires research-led animal and plant breeding and feeding strategies to optimise ruminant systems. This study collated information from a global network of research farms reflecting a variety of ruminant production systems in diverse regions of the globe. Using thisinformation, key changesin the genetic and nutritional approachesrelevant to each system were drawn that, if implemented, would help shape more sustainable future ruminant livestock systems.  aBREEDING GOALS  aFEEDING STRATEGIES  aGENETIC RESOURCES  aGLOBAL WARMING  aGRAZING RUMINANTS  aPRODUCTION SYSTEMS  aSUSTAINABLE INTENSIFICATION1 aLÓPEZ-VILLALOBOS, N.1 aEVANS, A.1 aBERNDT, A.1 aCARTMILL, A.1 aNEAL, A. L.1 aMCLAREN, A.1 aFARRUGGIA, A.1 aMIGNOLET, C.1 aCHADWICK, D.1 aSTYLES, D.1 aMCCRACKEN, D.1 aBUSCH, D.1 aMARTIN, G. B.1 aFLEMING, H.1 aSHERIDAN, H.1 aGIBBONS, J.1 aMERBOLD, L.1 aEISLER, M.1 aLAMBE, N.1 aROVIRA, P.J.1 aHARRIS, P.1 aMURPHY, P.1 aVERCOE, P. E.1 aWILLIAMS, P.1 aMACHADO, R.1 aTAKAHASHI, T.1 aPUECH, T.1 aBOLAND, T.1 aAYALA, W.1 aLEE, M.R.F.  tReproduction, Fertility and Development, 8 January 2021, vol. 33, p. 1-19. OPEN ACCESS. Doi: https://doi.org/10.1071/RD20205