000074987 001__ 74987
000074987 005__ 20200117221657.0
000074987 0247_ $$2doi$$a10.1093/jas/sky112
000074987 0248_ $$2sideral$$a107523
000074987 037__ $$aART-2018-107523
000074987 041__ $$aeng
000074987 100__ $$aBrito, L.C.
000074987 245__ $$aGenetic evaluation of age at first calving for Guzerá beef cattle using linear, threshold, and survival Bayesian models
000074987 260__ $$c2018
000074987 5060_ $$aAccess copy available to the general public$$fUnrestricted
000074987 5203_ $$aAge at first calving (AFC) is characterized as a censored trait due to missing values provided by recording mistakes and nonoccur-rence or delay in calving communication. In this context, we aimed to compare several statistical methods for genetic evaluation of AFC in Guzerá beef cattle under a Bayesian approach. Seven different methods were used for this purpose. The traditional linear mixed model (LM), which considers only uncensored records; the LM with simulated records (SM), which is based on data augmentation framework; the penalty method, in which a constant of 21 d was added to censored records; the bivariate threshold-linear method considering (TLcens) or not (TLmiss) censored information; and the piecewise Weibull proportional hazards model considering (PWPHcens) or not (PWPH) censored records. Heritability estimates ranged from 0.19 (TLcens) to 0.28 (SM) in non-survival approaches; and 0.40 and 0.46 to PWPH and PWPHcens methods, respectively. In general, breeding values correlations between different methods and the percentage of selected bulls in common indicated reranking, with these correlation ranging from -0.28 (between SM and PWPH) to 0.99 (between TLmiss and LM). The traditional LM, which considers only uncensored records, should be preferred due to its robustness and simplicity. Based on cross-validation analyses, we conclude that the TLmiss could be also a suitable alternative for breeding value prediction, and censored methods did not improve the analysis.
000074987 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000074987 590__ $$a1.697$$b2018
000074987 591__ $$aAGRICULTURE, DAIRY & ANIMAL SCIENCE$$b16 / 61 = 0.262$$c2018$$dQ2$$eT1
000074987 592__ $$a0.871$$b2018
000074987 593__ $$aAnimal Science and Zoology$$c2018$$dQ1
000074987 593__ $$aMedicine (miscellaneous)$$c2018$$dQ1
000074987 593__ $$aGenetics$$c2018$$dQ1
000074987 593__ $$aFood Science$$c2018$$dQ1
000074987 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000074987 700__ $$aCasellas, J.
000074987 700__ $$0(orcid)0000-0001-6256-5478$$aVarona, L.$$uUniversidad de Zaragoza
000074987 700__ $$aLopes, P.S.
000074987 700__ $$aVentura, H.T.
000074987 700__ $$aPeixoto, M.G.C.D.
000074987 700__ $$aLázaro, S.F.
000074987 700__ $$aSilva, F.F.
000074987 7102_ $$11001$$2420$$aUniversidad de Zaragoza$$bDpto. Anatom.,Embri.Genét.Ani.$$cÁrea Genética
000074987 773__ $$g96, 7 (2018), 2517-2524$$pJ. anim. sci.$$tJOURNAL OF ANIMAL SCIENCE$$x0021-8812
000074987 8564_ $$s153002$$uhttps://zaguan.unizar.es/record/74987/files/texto_completo.pdf$$yVersión publicada
000074987 8564_ $$s123445$$uhttps://zaguan.unizar.es/record/74987/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000074987 909CO $$ooai:zaguan.unizar.es:74987$$particulos$$pdriver
000074987 951__ $$a2020-01-17-22:11:46
000074987 980__ $$aARTICLE