01745nam a2200253 a 450000100080000000500110000800800410001910000190006024501370007926001650021650001890038152007030057065000100127365000210128365300350130465300370133965300090137665300160138565300200140170000180142170000150143970000170145470000200147110619422021-04-05       2006    bl uuuu     u01u1 u    #d1 aCIAPPESONI, G.  aEstimation of genetic parameters and genetic trends for wool production and quality for the Uruguayan Merino.h[electronic resource]  aIn: Proceedings of the World Congress on Genetics Applied to Livestock Production, 8., Belo Horizonte, Minas Gerais, Brazil, August 13-18, 2006, p. 05.04.c2006  aAcknowledgements: This work would not have been possible without the support of ARU (Asociación Rural del Uruguay) and SCMAU (Association of the Uruguayan Merino Breeders of Uruguay).  aUsing the data recorded in the National Genetic Evaluation System of the Australian Merino Breed (20,335 animals and 13,497 production records), the genetic parameters were estimate using restricted maximum likelihood methodology, applied to a multiple trait animal model for the five wool traits evaluated routinely: Greasy Fleece Weight (GFW), Clean Fleece Weight (CFW), Fibre Diameter (FD), Staple Length (SL) and Body Weight (BW). The heritabilities for these traits were 0.39, 0.39, 0.67 0.48 and 0.37, respectively. The genetic trend reached for FD by the national population and the selection nucleus (supported by INIA, SUL and SCMAU), was of -0.15 and -0.24 microns per year, respectively.  aLANAS  aLANAS ULTRAFINAS  aFine Merino Project of Uruguay  aPROYECTO MERINO FINO DEL URUGUAY  aWool  aWool market  aWool production1 aRAVAGNOLO, O.1 aGIMENO, D.1 aMONTOSSI, F.1 aDE BARBIERI, I.