Article (Scientific journals)
Influence of animals obtained using embryo transfer on the genetic evaluation of growth in Simmental beef cattle with random regression models
REIS MOTA, Rodrigo; Lopes, P. S.; Marques, L. F. A. et al.
2013In Genetics and Molecular Research, 12 (4), p. 5889-5904
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Keywords :
Body weight; Heritability; Maternal effects; (Co)variance components
Abstract :
[en] Weight records of Simmental beef cattle were used in a genetic evaluation of growth with and without embryo transfer (ET). A random regression model in which ET individuals were excluded (RRM1) contained 29,510 records from 10,659 animals, while another model that did not exclude these animals (RRM2) contained 62,895 records from 23,160 animals. The fixed and random regressions were represented by continuous functions, and a model with an order of three for the fixed curve and random effects was used to consider the homogeneity of residual variance. In general, the (co)variance components were similar in both models, except the maternal permanent environment and residual components. The direct heritability in RRM1 and RRM2 showed the same behavior with oscillations along the growth curve and were slightly higher in RRM1. Generally, the estimated correlations were the same and smaller as the ages distanced themselves. The inclusion of animals from ET in genetic evaluations can be done using random regression models; the inclusion of these animals would provide potential accuracy gains and greater genetic gains per unit time because of the reduction in the generation interval from the use of this reproductive technique. © FUNPEC-RP.
Disciplines :
Animal production & animal husbandry
Agriculture & agronomy
Genetics & genetic processes
Author, co-author :
REIS MOTA, Rodrigo ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Lopes, P. S.;  Departamento de Zootecnia, Universidade Federal de Viçosa/INCT Ciência Animal, Viçosa, MG, Brazil
Marques, L. F. A.;  Departamento de Zootecnia, Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Alegre, ES, Brazil
Silva, L. P.;  Departamento de Zootecnia, Universidade Federal de Viçosa/INCT Ciência Animal, Viçosa, MG, Brazil
Conceição Pessoa, M.;  Departamento de Zootecnia, Universidade Federal de Viçosa/INCT Ciência Animal, Viçosa, MG, Brazil
Almeida Torres, R.;  Departamento de Zootecnia, Universidade Federal de Viçosa/INCT Ciência Animal, Viçosa, MG, Brazil
Resende, M. D. V.;  Embrapa Florestas, Colombo, PR, Brazil, Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Viçosa, MG3, Brazil
Language :
English
Title :
Influence of animals obtained using embryo transfer on the genetic evaluation of growth in Simmental beef cattle with random regression models
Publication date :
2013
Journal title :
Genetics and Molecular Research
ISSN :
1676-5680
Publisher :
Fundacao de Pesquisas Cientificas de Ribeirao Preto (FUNPEC-RP)
Volume :
12
Issue :
4
Pages :
5889-5904
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 April 2017

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