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Genetic parameters and environmental effects on temperament score and reproductive traits of Nellore cattle

Published online by Cambridge University Press:  01 August 2011

D. Barrozo ,
M. E. Buzanskas ,
J. A. Oliveira ,
D. P. Munari ,
H. H. R. Neves  and
S. A. Queiroz
D. Barrozo
Affiliation:
Secretaria da Agricultura e Abastecimento, CODEAGRO, Caixa Postal 14, 14870-970, Jaboticabal, São Paulo, Brazil Departamento de Zootecnia, FCAV/UNESP, Via de acesso Prof. Paulo Castelane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil
M. E. Buzanskas
Affiliation:
Departamento de Ciências Exatas, FCAV/UNESP, Jaboticabal, São Paulo, Brazil
J. A. Oliveira
Affiliation:
Departamento de Ciências Exatas, FCAV/UNESP, Jaboticabal, São Paulo, Brazil
D. P. Munari
Affiliation:
Departamento de Ciências Exatas, FCAV/UNESP, Jaboticabal, São Paulo, Brazil
H. H. R. Neves
Affiliation:
Departamento de Zootecnia, FCAV/UNESP, Via de acesso Prof. Paulo Castelane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil
S. A. Queiroz*
Affiliation:
Departamento de Zootecnia, FCAV/UNESP, Via de acesso Prof. Paulo Castelane, s/n, 14884-900, Jaboticabal, São Paulo, Brazil
*
†E-mail: saquei@fcav.unesp.br
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Abstract

Animal temperament is a trait of economic relevance and its use as a selection criterion requires the identification of environmental factors that influence this trait, as well as the estimation of its genetic variability and interrelationship with other traits. The objectives of this study were to evaluate the effect of the covariates dam age at calving (ADC), long yearling age (YA) and long yearling weight (YW) on temperament score (T) and to estimate genetic parameters for T, scrotal circumference (SC) at long YA and age at first calving (AFC) in Nellore cattle participating in a selection program. The traits were analyzed by the restricted maximum likelihood method under a multiple-trait animal model. For all traits, contemporary group was included as a fixed effect and additive genetic and residual as random effects. In addition to these effects, YA, YW and ADC were considered for analyzing T. In the case of SC and AFC, the effect of long YW was included as a covariate. Genetic parameters were estimated for and between traits. The three covariates significantly influenced T. The heritability estimates for T, SC and AFC were 0.18 ± 0.02, 0.53 ± 0.04 and 0.23 ± 0.08, respectively. The genetic correlations between T and SC, and T and AFC were −0.07 ± 0.17 and −0.06 ± 0.19, respectively. The genetic correlation estimated between SC and AFC was −0.57 ± 0.16. In conclusion, a response to selection for T, SC and AFC is expected and selection for T does not imply correlated responses with the other traits.

Keywords

age at first calvingscrotal circumferencelong yearling agelong yearling weight
Type
Full Paper
Information
animal , Volume 6 , Issue 1 , January 2012 , pp. 36 - 40
Copyright
Copyright © The Animal Consortium 2011

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References

Baker, JH, Kroo, JR, Turman, EJ, Buchanan, DS 1981. A comparison of different breeds for growth rates, performance traits and scrotal circumference in young beef bulls. Animal Science Research Report, Blacksburg, Stillwater, 15–18.Google Scholar
Boldman, KG, Kriese, LA, Van Vleck, LD, Kachman, SD 1995. A manual for use of MTDFREML. A set of programs to obtain estimates of variance and covariance. SDA-ARS, Clay Center, NE, USA.Google Scholar
Boligon, AA, Rorato, PRN, Albuquerque, LG 2007. Correlações genéticas entre medidas de perímetro escrotal e características produtivas e reprodutivas de fêmeas da raça Nelore. Revista Brasileira de Zootecnia 36, 565–571.CrossRefGoogle Scholar
Burrow, HM 1997. Measurements of temperament and their relationship with performance traits in beef cattle. Animal Breeding Abstracts 65, 477–495.Google Scholar
Burrow, HM 2001. Variances and covariances between productive and adaptive traits and temperament in composite breed of tropical beef cattle. Livestock Production Science 70, 213–233.CrossRefGoogle Scholar
Cardoso, FF, Cardellino, RA, Campos, LT 2004. Componentes de (co)variância e parâmetros genéticos de características pós-desmama em bovinos da raça Angus. Revista Brasileira de Zootecnia 33, 313–319.CrossRefGoogle Scholar
CRV Lagoa. Sumário Consolidado PAINT 2009. Lagoa da Serra Ltda. Sertãozinho, SP, Brazil. Retrieved December 25, 2009, from http://www.lagoa.com.brGoogle Scholar
Frizzas, OG, Grossi, DA, Buzanskas, ME, Paz, CCP, Bezerra, LAF, Lôbo, RB, Oliveira, JA, Munari, DP 2009. Heritability estimates and genetic correlations for body weight and scrotal circumference adjusted to 12 and 18 months of age for male Nellore cattle. Animal 3, 347–351.CrossRefGoogle ScholarPubMed
Gauly, G, Mathiak, K, Hoffmann, K, Kraus, M, Erhardt, G 2001. Estimating genetic variability in temperamental traits in German Angus and Simmental cattle. Applied Animal Behaviour Science 74, 109–119.CrossRefGoogle Scholar
Gressler, SL, Bergmann, JAG, Pereira, CS, Penna, VM, Pereira, JCC, Gressler, MGM 2000. Estudo das associações genéticas entre perímetro escrotal e características reprodutivas de fêmeas Nelore. Revista Brasileira de Zootecnia 29, 427–437.CrossRefGoogle Scholar
Grossi, DA, Frizzas, OG, Paz, CCP, Bezerra, LAF, Lôbo, RB, Oliveira, JA, Munari, DP 2008. Genetic associations between accumulated productivity, and reproductive and growth traits in Nelore cattle. Livestock Science 117, 139–146.CrossRefGoogle Scholar
Kachman, SD, Van Vleck, LD 2007. Technical Note: calculation of standard errors of estimates of genetic parameters with the multiple-trait derivative-free restricted maximal likelihood programs. Journal of Animal Science 85, 2375–2381.CrossRefGoogle ScholarPubMed
Martin, LC, Brinks, JS, Bourdon, RM, Cundiff, LV 1992. Genetic effects on beef heifer puberty and subsequent reproduction. Journal of Animal Science 70, 4006–4017.CrossRefGoogle ScholarPubMed
Mishra, RR, Chauhan, RS, Gupta, SC 1975. Studies of dairy temperament of Karan Swiss cows. Indian Journal of Dairy Science 8, 85–88.Google Scholar
Mourão, G, Bergmann, JAG, Ferreira, MBD 1998. Diferenças genéticas e estimação de coeficientes de herdabilidade para temperamento em fêmeas zebus e F1 Holandês × Zebu. Revista Brasileira de Zootecnia 27, 722–729.Google Scholar
Phocas, F, Boivin, X, Sapa, J, Trillat, G, Boissy, A, Le Neindre, P 2006. Genetic correlations between temperament and breeding traits in Limousin heifers. Animal Science 82, 805–811.CrossRefGoogle Scholar
Silveira, IDB, Fischer, V, Soares, GJD 2006. Relação entre o genótipo e o temperamento de novilhos em pastejo e seu efeito na qualidade da carne. Revista Brasileira de Zootecnia 35, 519–526.CrossRefGoogle Scholar
Spironelli, ALG, Paranhos da Costa, MJR 2008. Avaliação da reatividade de bovinos dos grupos genéticos Braford e Nelore e suas relações e influências nas contusões e rendimentos de carcaças. In Congreso Latinoamericano de Etologia Aplicada 1, International Society for Applied Ethology, Montevideo, p. 114.Google Scholar
Trocóniz, JF, Beltrán, J, Bastidas, H, Larreal, H, Bastidas, P 1991. Testicular development, body weight changes, puberty and semen traits of growing Guzerat and Nellore bulls. Theriogenology 35, 815–826.CrossRefGoogle ScholarPubMed
Voisinet, BD, Grandin, T, Tatum, JD, o'Connor, SF, Struthers, JJ 1997. Feedlot cattle with calm temperaments have higher average daily gains than cattle with excitable temperaments. Journal of Animal Science 75, 892–896.CrossRefGoogle ScholarPubMed