01584nam a2200253 a 450000100080000000500110000800800410001902200140006002400380007410000150011224501530012726001430028050003760042352003650079965300160116465300150118065300170119565300290121270000130124170000220125470000160127670000190129270000190131110642922023-08-17       2023    bl uuuu     u01u1 u    #d  a2772-283X7 a10.1016/j.anscip.2023.04.1512DOI1 aMARÍN, M.  aP56. Reproductive performance of grazing hereford heifers classified by paternal residual feed intake. [conference abstract].h[electronic resource]  aAnimal - science proceedings, July 2023, Volume 14, Issue 4, Page 637. https://doi.org/10.1016/j.anscip.2023.04.151  -- OPEN ACCESS.c2023  aArticle history: Available online 4 August 2023, Version of Record 4 August 2023. -- Corresponding author: M.F. Marín. mfedericamarin@gmail.com --  Part of special issue: 11th International Symposium on the Nutrition of Herbivores (ISNH 2023). 4-8 June 2023, Florianópolis, Brazil.  (https://www.sciencedirect.com/journal/animal-science-proceedings/vol/14/issue/4  ) --  aResidual feed intake (RFI) has become in a widely spread index of feed efficiency, however, although most of beef cattle systems in the world are pasture-based, RFI evaluation and research is usually performed in confinement conditions. Currently, selection in favor of feed efficiency has an unclear effect on reproductive performance of grazing beef heifers.  aBeef cattle  aRangelands  aReproduction  aResidual heat production1 aNAYA, H.1 aESPASANDÍN, A.C.1 aNAVAJAS, E.1 aDEVINCENZI, T.1 aCARRIQUIRY, M.