Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10495/10818
Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.contributor.authorAgudelo Gómez, Divier Antonio-
dc.contributor.authorPelicioni Savegnago, Rodrigo-
dc.contributor.authorBuzanskas, Marcos Eli-
dc.contributor.authorFerraudo, Antonio Sergio-
dc.contributor.authorPrado Murani, Danísio-
dc.contributor.authorCerón Muñoz, Mario Fernando-
dc.identifier.citationAgudelo-Gomez D A, Peliocini-Savegnago R, Ceron-Muñoz M F. Genetic principal components for reproductive and productive traits in dual-purpose buffaloes in Colombia. J Anim Sci. 2015; 93:3801–3809.spa
dc.description.abstractABSTRACT: A multitrait model (MC) and 5 reduced- rank models with principal component structure (components PC1, PC1:2, PC1:3, PC1:4, and PC1:5) were compared. The objectives were to determine the most appropriate model for estimating genetic parameters and to evaluate the genetic progress of dual-purpose buffaloes in Colombia using that mod- el. The traits evaluated were weaning weight (WW), yearling weight (W12), weight at 18 mo of age (W18), weight at 2 yr of age (W24), age at first calving (AFC), and milk yield at 270 d of first lactation (MY270). Genealogy and productive information from 34,326 buffaloes born in Colombia between 1997 and 2014 were used. Colombian Association of Buffalo Breeders (ACB) provided the data. Direct additive genetic and residual random effects were included for all the traits. In addition, the maternal additive genetic effect and permanent environmental random effect were included for WW, while a maternal additive genetic effect was included for W12. The fixed effects were contempo- rary group (farm, year, and calving season: January to April, May to August, or September to December; for all traits) and sex (for WW, W12, W18, and W24). Additionally, parity was included as a fixed effect for WW and W12. Age at weighing was used as a covariate for WW, W12, W18, and W24. Genetic progress of all traits was analyzed using a generalized smooth model (GAM). According to the Akaike information criteria (AIC), the best model was the one with reduced rank and first 3 principal components (PC1:3). This model maintained 100% of the original variance. Genetic parameters estimated with this model were similar to those estimated by MC, but with smaller standard errors. Heritability for weight-related traits ranged between 0.23 and 0.44. Heritabilities for AFC and MY270 were 0.14 and 0.24, respectively. The genetic correlations obtained between all weights (WW, W12, W18, and W24) were positive and high. Correlations between all weights with AFC were negative and mod- erate. Correlations between all weights with MY270 were positive and moderate, and between MY270 with AFC were negative and low.spa
dc.publisherAmerican Society of Animal Sciencespa
dc.rightsAtribución-NoComercial-SinDerivadas 2.5 Colombia*
dc.subjectBubalus bubalis-
dc.subjectGenetic evaluation-
dc.subjectGenetic progress-
dc.subjectReduced-rank models-
dc.titleGenetic principal components for reproductive and productive traits in dual-purpose buffaloes in Colombiaspa
dc.publisher.groupGrupo de Investigación en Agrociencias, Biodiversidad y Territorio GAMMAspa
oaire.citationtitleJournal of Animal Sciencespa
dc.publisher.placeEstados Unidosspa
dc.type.localArtículo de investigaciónspa
dc.relation.ispartofjournalabbrevJ. Anim. Sci.spa
Aparece en las colecciones: Artículos de Revista en Ciencias Agrarias

Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
AgudeloD_2015_GeneticDualPurposeBuffaloes.pdfArtículo de investigación526.41 kBAdobe PDFVisualizar/Abrir

Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons Creative Commons