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Estimates of genetic parameters for growth traits of Gobra cattle

Published online by Cambridge University Press:  02 September 2010

M. Diop  and
L. D. Van Vleck
M. Diop
Affiliation:
Department of Animal Science, University of Nebraska, Lincoln, NE 68583–0908, USA
L. D. Van Vleck*
Affiliation:
US Department of Agriculture-Agricultural Research Station, Clay Center, NE 68933–0166, USA
*
†To whom correspondence should be addressed
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Abstract

Estimates of (co)variance components and genetic parameters were obtained for birth (no. = 3909), weaning (no. = 3425), yearling (no. = 2763), and final weight (no. = 2142) for Gobra cattle at the Centre de Recherches Zootechniques de Dahra (Senegal), using single trait animal models. Data were analysed by restricted maximum likelihood. Four different animal models were fitted for each trait. Model 1 considered the animal as the only random effect. Model 2 included in addition to the additive direct effect of the animal, the environmental effect due to the dam. Model 3 added the maternal additive genetic effects and allowed a covariance between the direct and maternal genetic effects. Model 4 fitted both maternal genetic and permanent environmental effects. Inclusion of both types of maternal effects (genetic and environmental) provided a better fit for birth and weaning weights than models with one maternal effect only. For yearling and final weights, the improvement was not significant. Important maternal effects werefound for all traits. Estimates of direct heritabilities were substantially higher when maternal effects were ignored. Estimates of direct and maternal heritabilities with model 4 were 0·07 (s.e. 0·03) and 0·04 (s.e. 0·02), 0·20 (s.e. 0·05) and 0·21 (s.e. 0.05), 0·24 (s.e. 0·07) and 0·21 (s.e. 0·06), and 0·14 (s.e. 0·06) and 0.16 (s.e. 0·06) for birth, weaning, yearling and final weights, respectively. Correlations between direct and maternal genetic effects were negative for all traits, and large for weaning and yearling weights with estimates of -0·61 (s.e. 0·33) and -0·50 (s.e. 0·31), respectively. There was a significant positive linear phenotypic trend for weaning and yearling weights. Linear trends for additive direct and maternal breeding values were not significant for any trait except maternal breeding value for yearling weight.

Keywords

cattlegenetic parametersGobragrowth
Type
Research Article
Information
Animal Science , Volume 66 , Issue 2 , April 1998 , pp. 349 - 355
Copyright
Copyright © British Society of Animal Science 1998

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References

Abassa, P. K. 1984. Systems approach to Gobra Zebu production in Dahra, Senegal. Ph.D. dissertation, University of Florida, Gainesville, FL.Google Scholar
Baker, R. L. 1980. The role of maternal effects on the efficiency of selection in beef cattle. A review. Proceedings of the New Zealand Society ofAnimal Production 40: 285–303.Google Scholar
Boldman, K. G., Kriese, L. D., Van Vleck, L. D. and Kachman, S. D. 1993. A manual for use of MTDFREML. A set of programs to obtain estimates of variances andcovariences. ARS, USDA, Washington, DC.Google Scholar
Centre de Recherches Zootechniques de Dahra. 1973. Rapport annual 1973.Google Scholar
Denis, J. P. and Thiongane, A. I. 1974. L'aptitude a la production de viande chez le zebu Gobra du Senegal. Proceedings of the first world congress on genetics applied animal production, Madrid, vol. 3, pp. 889–897.Google Scholar
Eler, J. P., Van Vleck, L. D., Ferraz, J. B. S. and Lobo, R. B. 1995. Estimation of variances due to direct and maternal effects for growth traits of Nelor cattle Journal of Animal Science 73: 3253–3258.CrossRefGoogle ScholarPubMed
Gerstmayr, S. 1992. Impact of the data structure on the reliability of the estimated genetic parameters in an animal model with maternal effects Journal of Animal Breeding and Genetics 109:321–336.CrossRefGoogle Scholar
Johnson, D. L. and Thompson, R. 1994. Restricted maximum likelihood estimation of variance components for univariate animal models using sparse matrix techniques and a quasi-Newton procedure. Proceedings of the fifth world congress on genetics applied to livestock production, Guelph, 18, p. 410–413.Google Scholar
Khombe, C. T., Hayes, J. F., Cue, R. I. and Wade, K. M. 1995. Estimation of direct additive and maternal additive genetic effects for weaning weight in Mashona cattle of Zimbabwe using an individual animal model Animal Production 60: 41–48.Google Scholar
Koch, R. M. 1972. The role of maternal effects in animal breeding. VI. Maternal effects in beef cattle. Journal of Animal Science 35: 1316–1323.CrossRefGoogle ScholarPubMed
Koots, K. R., Gibson, J. P., Smith, C. and Wilton, J. W. 1994. Analyses of published genetic parameter estimates for beef production traits. 1. Heritability. Animal Breeding Abstracts 62:309–338.Google Scholar
Mackinnon, M. J., Meyer, K. and Hetzel, J. D. S. 1991. Genetic variation and covariation for growth, parasite resistance and heat tolerance in tropical cattle Livestock Production Science 27:105–122.CrossRefGoogle Scholar
Meyer, K. 1992. Variance components due to direct and maternal effects for growth traits of Australian beef cattle. Livestock Production Science 31:179–204.CrossRefGoogle Scholar
Mohiuddin, G. 1993. Estimates of genetic and phenotypic parameters of some performance traits in beef cattle Animal Breeding Abstracts 61: 495–522.Google Scholar
Robison, O. W. 1981. The influence of maternal effects on the efficiency of selection; a review Livestock Production Science 8:121–137.CrossRefGoogle Scholar
Sow, R. S., Denis, J. P., Trail, J. M. C., Thiongane, P. I., Mbaye, M. and Diallo, I. 1988. Productivite du Zebu Gobra au Centre de Recherches Zootechniques de Dahra (Senegal). ISRA Etudes et Documents, vol. 1, no. 2.Google Scholar
Statistical Analysis Systems Institute. 1992. SAS/STAT release 6.08. SAS Institute Inc., Cary, NC.Google Scholar
Tawah, C. L., Mbah, D. A., Rege, J. E. O. and Oumate, H. 1993. Genetic evaluation of birth and weaning weight of Gudali and two-breed synthetic Wakwa beef cattle populations under selection in Cameroon: genetic and phenotypic parameters Animal Production 57: 73–79.Google Scholar
Van Vleck, L. D., David, St L. and Miller, J. I. 1977. Expected phenotypic response in weaning weight of beef calves from selection for direct and maternal genetic effects. Journal of Animal Science 44: 360–367.CrossRefGoogle Scholar
Willham, R. L. 1972. The role of maternal effects in animal breeding. III. Biometrical aspects of maternal effects in animals. Journal ofAnimal Science 35: 1288–1293.Google Scholar
Wright, D. W., Johnson, Z. B., Brown, C. J. and Wildeus, S. 1991. Variance and covariance estimates for weaning weight of Senepol cattle Journal of Animal Science 69: 3945–3951.Google ScholarPubMed