Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle

The influence of cytoplasmic inheritance on birth and weaning weight was evaluated in an experimental Hereford herd. Data on 1,720 records for birth and weaning weights from calves born between 1963 and 2002 were studied. Variance components were estimated using MTDFREML procedures and an animal mod...

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Autores principales: Mezzadra, Carlos Alberto, Melucci, Lilia Magdalena, Corva, Pablo Marcelo, Valiente, Sebastián López, Ripoli, María Verónica, Lirón, Juan Pedro, Giovambattista, Guillermo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Ciencias Veterinarias
Beef cattle
Birth weight
Cytoplasmic inheritance
Hereford
SSCP
Weaning weight
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83158
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83158
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Veterinarias
Beef cattle
Birth weight
Cytoplasmic inheritance
Hereford
SSCP
Weaning weight
spellingShingle Ciencias Veterinarias
Beef cattle
Birth weight
Cytoplasmic inheritance
Hereford
SSCP
Weaning weight
Mezzadra, Carlos Alberto
Melucci, Lilia Magdalena
Corva, Pablo Marcelo
Valiente, Sebastián López
Ripoli, María Verónica
Lirón, Juan Pedro
Giovambattista, Guillermo
Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle
topic_facet Ciencias Veterinarias
Beef cattle
Birth weight
Cytoplasmic inheritance
Hereford
SSCP
Weaning weight
description The influence of cytoplasmic inheritance on birth and weaning weight was evaluated in an experimental Hereford herd. Data on 1,720 records for birth and weaning weights from calves born between 1963 and 2002 were studied. Variance components were estimated using MTDFREML procedures and an animal model was fitted for each trait. Direct and maternal additive effects and permanent environment and maternal lineage effects were treated as random, while year and month of birth, age of dam and sex of the calf were treated as fixed. Identification of maternal lineages was based on pedigree information. The contribution to phenotypic variance of cytoplasmic lineages defined by pedigree information was negligible for both traits. Mitochondrial genotypes of cows present in the herd in 2002 were analyzed by single strand conformation polymorphism (SSCP) analysis. Only five different genotypes were identified among 23 maternal lineages. All the animals with records were assigned to maternal genotypes based on pedigree information. The statistical analysis was repeated, removing maternal lineage from the model and including mitochondrial genotype as a fixed effect. No evidence of genotype effects was detected. These results suggest a negligible effect of the mitochondrial genome on the preweaning traits of this Hereford herd.
format Articulo
Articulo
author Mezzadra, Carlos Alberto
Melucci, Lilia Magdalena
Corva, Pablo Marcelo
Valiente, Sebastián López
Ripoli, María Verónica
Lirón, Juan Pedro
Giovambattista, Guillermo
author_facet Mezzadra, Carlos Alberto
Melucci, Lilia Magdalena
Corva, Pablo Marcelo
Valiente, Sebastián López
Ripoli, María Verónica
Lirón, Juan Pedro
Giovambattista, Guillermo
author_sort Mezzadra, Carlos Alberto
title Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle
title_short Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle
title_full Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle
title_fullStr Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle
title_full_unstemmed Effects of cytoplasmic inheritance on preweaning traits of Hereford cattle
title_sort effects of cytoplasmic inheritance on preweaning traits of hereford cattle
publishDate 2005
url http://sedici.unlp.edu.ar/handle/10915/83158
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