Genetic and phenotypic relationships among milk production and composition traits in primiparous Holstein cows in two different herd environments

Simple item page
AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:32:42Z
Fecha de publicación2002-01-01
ResumenGenotype by environment interactions for mature equivalent milk yield (MEM), mature equivalent protein yield (MEP), mature equivalent fat yield (MEF), protein percentage (P\%), fat percentage (F\%), and lactation mean somatic cell score (LMSCS) were studied using 248 230 first parity records of Holstein cows calving from 1987 to 1994, daughters of 588 sires in 3042 herds. Herds were classified into low and high yield environment classes. Genetic parameters were estimated with bivariate linear mixed models using the multiple trait derivative free software (MTDFREML). For low yield environment herds, heritabilities for MEM, MEP, MEF, P\%, F\% and LMSCS were 0.22, 0.20, 0.23, 0.51, 0.58 and 0.11, while for high yield environment herds they were 0.30, 0.27, 0.27, 0.56, 0.56 and 0.09. All genetic correlations, except between MEM and P\% and F\%, were different in low and high yield environment herd classes. These results indicate that differences in management between the two herd environment classes modify the genetic expression of the traits studied and their genetic association. This suggests that, when these traits are considered in a selection index, appropriate weights for these traits depend on the herd environment class. These results also indicate that different correlated responses for MEP, MEF and LMSCS are expected in, high relative to low yield environment herds when selection is based on MEM only. (C) 2002 Elsevier Science B.V. All rights reserved.es_ES
Doihttps://doi.org/10.1016/s0301-6226(02)00098-2es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4515
Idiomaenes_ES
EditorialELSEVIERes_ES
RelaciónLivestock Production Sciencees_ES
URL relacionadohttps://doi.org/10.1016/s0301-6226(02)00098-2es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteLivestock Production Science
Palabra clavecattlees_ES
Palabra clavegeneticses_ES
Palabra clavemilk yieldes_ES
Palabra clavemilk constituentses_ES
Palabra clavesomatic cell scorees_ES
Palabra clavemanagementes_ES
Palabra clavegenotype by environment interactiones_ES
TítuloGenetic and phenotypic relationships among milk production and composition traits in primiparous Holstein cows in two different herd environmentses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorCastillo-Juarez, H
AutorOltenacu, PA
AutorCienfuegos-Rivas, EG
AutorCastillo-Juarez, Hes_ES
AutorOltenacu, PAes_ES
AutorCienfuegos-Rivas, EGes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número3es_ES
Rango de páginas223-231es_ES
URL relacionadahttps://doi.org/10.1016/s0301-6226(02)00098-2
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen78es_ES

Files

Collections

Documentación Cientifica