Direct and maternal annual genetic changes for selected traits at weaning and yearling in beef cattle

Vista sencilla de ítem
dc.creatorArione Augusti Boligon
dc.creatorIsadora dos Santos Vicente
dc.creatorVanerlei Mozaquatro Roso
dc.creatorFabio Ricardo Pablos de Souza
dc.date2019
dc.date.accessioned2026-07-07T03:57:16Z
dc.descriptionHeritability and direct and maternal genetic changes were estimated in Nellore cattle for the following traits: birth to weaning weight gain (BWG), weaning to yearling weight gain (YWG), weaning conformation (WC), weaning precocity (WP), weaning muscling (WM), yearling conformation (YC), yearling precocity (YP), yearling muscling (YM) and yearling scrotal circumference (SC). Direct and maternal heritability for weaning traits were 0.21±0.03 and 0.13±0.01 (BWG); 0.19±0.03 and 0.07±0.01 (WC); 0.22±0.03 and 0.07±0.01 (WP); 0.20±0.03 and 0.07±0.01 (WM), respectively. For yearling traits, direct heritability were 0.19±0.04 (YWG); 0.32±0.05 (YC); 0.37±0.05 (YP); 0.38±0.05 (YM) and 0.41±0.04 (SC). Positive and significant direct genetic changes (p < 0.05) were found for all traits, except for WC (p = 0.09), equal to 0.138 kg year-1 (BWG), 0.003 units year-1 (WC), 0.011 units year-1 (WP), 0.009 units year-1 (WM), 0.132 kg year-1 (YWG), 0.003 units year-1 (YC), 0.011 units year-1 (YP), 0.011 units year-1 (YM) and 0.020 cm year-1 (SC), indicating favorable genetic gains in the period. For weaning traits, we obtained negative and non-significant (p > 0.05) maternal genetic trends, with values of -0.084 kg year-1 (BWG), -0.004 units year-1 (WC), -0.004 units year-1 (WP) and -0.004 units year-1 (WM). Thus, greater emphasis should be given for maternal genetic merit of weaning traits in this population, if improvements in maternal ability were desirable.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303160553059
dc.identifierhttps://www.redalyc.org/journal/3031/303160553059/
dc.identifierhttps://www.redalyc.org/journal/3031/303160553059/html/
dc.identifierhttps://www.redalyc.org/journal/3031/303160553059/303160553059.epub
dc.identifierhttps://www.redalyc.org/journal/3031/303160553059/movil
dc.identifier10.4025/actascianimsci.v41i1.42572
dc.identifier.urihttp://hdl.handle.net/123456789/448391
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Vol.41
dc.subjectAgrociencias
dc.titleDirect and maternal annual genetic changes for selected traits at weaning and yearling in beef cattle
dc.typeartículo científico

Archivos

Colecciones

Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá