+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Evaluation of models to estimate variance components and genetic parameters for growth traits of Guzera cattle



Evaluation of models to estimate variance components and genetic parameters for growth traits of Guzera cattle



Revista Brasileira de Zootecnia-Brazilian Journal of Animal Science 35(5): 1943-1950



Data front 26.314 animals of Guzera cattle, weighted every 90 days from birth to 630 days, between 1975 and 2001. were used to estimate covariance components by REML methodology using four different models. The first model was the complete one and included four random components: direct genetic (GA), maternal genetic (GM), maternal permanent environmental (ANI) and the residual: model 2 did not include the GM effect: model 3 did not include the AM effect and model 4 did not include both GM and AM effects. Models 1 and 2 did not differ by likelihood ratio test in almost all age classes. Direct heritability estimates obtained from models 1 and 2 were quite similar, and increased front first to second age, remained the same until weanirg and then increased. Direct heritability estimates for weight in age classes close to 205, 365 and 550 days, by models 1 and 2. were respectively 0.15, 0.12 and 0.14. Estimates of the same parameter obtained by models 3 and 4 were respectively 0.15. 0.14. 0.15 and 0.26. 0.19, 0.17. Maternal heritability estimates by model 3 were higher because it did not include the AM effect. The additive genetic variance was probably superestimated by model 4 because it did not include GM and AM effects. The comparison between the models indicated that the model without GM was equivalent to the complete model 1.

(PDF emailed within 1 workday: $29.90)

Accession: 066199800

Download citation: RISBibTeXText


Related references

Alternative animal models to estimate (co)variance components and genetic and phenotypic parameters for birth weight in Nelore cattle. Revista Brasileira de Zootecnia 28(3): 512-518, 1999

Estimation of (Co)variance components and genetic parameters of growth traits in beef cattle. Journal of Applied Animal Research 26(2): 77-82, 2004

(Co)variance components and genetic parameters for growth traits in dual purpose crossbred cattle. Revista Cientifica, Facultad de Ciencias Veterinarias, Universidad del Zulia 16(1): 55-61, 2006

Variance components and genetic parameters estimates for growth traits of Simmental cattle in Brazil. Arquivo Brasileiro de Medicina Veterinaria e Zootecnia 51(4): 363-370, 1999

(Co)variance components and genetic parameters for growth traits in Arabi sheep using different animal models. Genetics and Molecular Research 11(1): 305-314, 2012

Direct and maternal (co)variance components and genetic parameters for growth traits in the Sahiwal cattle in Kenya. Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006: 32-21, 2006

Genetic parameters for weight traits from birth to 630 days of age in Guzera cattle by random regression models. Journal of Dairy Science 93: 38-39, 2010

Estimation of genetic parameters and variance components for growth traits in Romosinuano cattle in the Colombian humid tropics. Genetics and Molecular Research 6(3): 482-491, 2007

Direct and maternal (co)variance components and genetic parameters for growth and reproductive traits in the Boran cattle in Kenya. Tropical Animal Health and Production 41(5): 741-748, 2008

Variance components and genetic parameters for early growth traits in a mixed population of purebred Bos indicus and crossbred cattle. Livestock Production Science 84(1): 11-21, 2003

Estimation of genetic parameters and variance components for growth traits in Costeno Con Cuernos cattle in Colombian humid tropic. Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006: 32-20, 2006

Estimation of genetic parameters and variance components for growth traits of Nguni cattle in Limpopo Province, South Africa. Tropical Animal Health and Production 36(8): 801-806, 2005

Comparison of models to estimate genetic parameters of growth traits in dual purpose crossbred cattle. 2007

Evaluation of models to estimate (Co)variance components in reproductive traits of swine. Revista Brasileira de Zootecnia 29(6): 1684-1688, 2000

Evaluation of models to estimate (co)variance components in performance and reproductive traits of swine. Revista Brasileira de Zootecnia-Brazilian Journal of Animal Science 33(2): 350-357, 2004