02183naa a2200337 a 450000100080000000500110000800800410001910000180006024500950007826000090017350001400018252010890032265000160141165000170142765000340144465000260147865300170150465300290152165300190155065300160156965300180158565300180160365300230162170000190164470000150166370000130167870000240169170000190171570000230173477300880175718865102017-12-11       2011    bl uuuu     u00u1 u    #d1 aSANTOS, A. I.  aBayesian genetic parameters for body weight and survival of Nile tilapia farmed in Brazil.  c2011  aTítulo em português: Parâmetros genéticos bayesianos para peso corporal e sobrevivência de tilápias-do-nilo cultivadas no Brasil.  aThe objective of this study was to estimate genetic parameters for survival and weight of Nile tilapia (Oreochromis niloticus), farmed in cages and ponds in Brazil, and to predict genetic gain under different scenarios. Survival was recorded as a binary response (dead or alive), during harvest time in the 2008 grow-out period. Genetic parameters were estimated using a Bayesian mixed linear-threshold animal model via Gibbs sampling. The breeding population consisted of 2,912 individual fish, which were analyzed together with the pedigree of 5,394 fish. The heritabilities estimates, with 95% posterior credible intervals, for tagging weight, harvest weight and survival were 0.17 (0.09?0.27), 0.21 (0.12?0.32) and 0.32 (0.22?0.44), respectively. Credible intervals show a 95% probability that the true genetic correlations were in a favourable direction. The selection for weight has a positive impact on survival. Estimated genetic gain was high when selecting for harvest weight (5.07%), and indirect gain for tagging weight (2.17%) and survival (2.03%) were also considerable.  aCorrelation  aHeritability  aMelhoramento genético animal  aOreochromis Niloticus  aCorrelação  aFish genetic improvement  aGibbs sampling  aGIFT strain  aHerdabilidade  aLinhagem GIFT  aMostragem de Gibbs1 aRIBEIRO, R. P.1 aVARGAS, L.1 aMORA, F.1 aALEXANDRE FILHO, L.1 aFORNARI, D. C.1 aOLIVEIRA, S. N. de  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 46, n. 1, p. 33-43, jan. 2011.