Genetic and environmental parameters for milk production, udder health, and fertility traits in Mexican Holstein cows

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:33Z
Fecha de publicación2010-01-01
ResumenGenetic and phenotypic parameters for Mexican Holstein cows were estimated for first- to third-parity cows with records from 1998 to 2003 (n = 2,971 -15,927) for 305-d mature equivalent milk production (MEM), fat production (MEF), and protein production (MEP), somatic cell score (SCS), subsequent calving interval (CAI), and age at first calving (AFC). Genetic parameters were obtained by average information matrixREML methodology using 6-trait (first-parity data) and 5-trait (second- and third-parity data) animal models. Heritability estimates for production traits were between 0.17 +/- 0.02 and 0.23 +/- 0.02 for first-and second-parity cows and between 0.12 +/- 0.03 and 0.13 +/- 0.03 for third-parity cows. Heritability estimates for SCS were similar for all parities (0.10 +/- 0.02 to 0.11 +/- 0.03). For CAI, estimates of heritability were 0.01 +/- 0.05 for third-parity cows and 0.02 +/- 0.02 for second-parity cows. The heritability for AFC was moderate (0.28 +/- 0.03). No unfavorable estimates of correlations were found among MEM, MEF, MEP, CAI, and SCS. Estimates of environmental and phenotypic correlations were large and positive among production traits; favorable between SCS and CAI; slightly favorable between MEM, MEF, and MEP and SCS, between AFC and SCS, and between SCS and CAI; and small but unfavorable between production traits and CAI. Estimates of genetic variation and heritability indicate that selection would result in genetic improvement of production traits, AFC, and SCS. Estimates of both heritability and genetic variation for CAI were small, which indicates that genetic improvement would be difficult.es_ES
Doihttps://doi.org/10.3168/jds.2009-2050es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5370
Idiomaenes_ES
EditorialELSEVIER SCIENCE INCes_ES
RelaciónJournal of Dairy Sciencees_ES
URL relacionadohttps://doi.org/10.3168/jds.2009-2050es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteJournal of Dairy Science
Palabra clavegenetic parameteres_ES
Palabra clavemilk production traites_ES
Palabra clavesomatic cell scorees_ES
Palabra clavefertilityes_ES
TítuloGenetic and environmental parameters for milk production, udder health, and fertility traits in Mexican Holstein cowses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorMontaldo, H. H.
AutorCastillo-Juarez, H.
AutorValencia-Posadas, M.
AutorCienfuegos-Rivas, E. G.
AutorRuiz-Lopez, F. J.
AutorMontaldo, H. H.es_ES
AutorCastillo-Juarez, H.es_ES
AutorValencia-Posadas, M.es_ES
AutorCienfuegos-Rivas, E. G.es_ES
AutorRuiz-Lopez, F. J.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número5es_ES
Rango de páginas2168-2175es_ES
URL relacionadahttps://doi.org/10.3168/jds.2009-2050
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen93es_ES

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