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Genetic variation in serum copper concentration in Angus cattle

Published online by Cambridge University Press:  13 March 2007

C. A. Morris ,
N. C. Amyes  and
S. M. Hickey
C. A. Morris*
Affiliation:
AgResearch, Ruakura Research Centre, Private Bag 3123, Hamilton, New Zealand
N. C. Amyes
Affiliation:
AgResearch, Ruakura Research Centre, Private Bag 3123, Hamilton, New Zealand
S. M. Hickey
Affiliation:
AgResearch, Ruakura Research Centre, Private Bag 3123, Hamilton, New Zealand
*
†Email: chris.morris@agresearch.co.nz
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Abstract

Following the discovery of low serum copper (Cu) concentrations in 9-month-old beef calves at pasture in autumn (50% of animals had values <7·5 μmol/l), genetic variation in serum Cu concentration was studied in an experimental Angus herd in New Zealand, monitoring at intervals from about 7 to 17 months of age. The study was initiated in autumn when animals were supplemented with zinc (Zn) salts (to protect against liver injury from toxin-producing facial eczema spores on the pasture), and later in the production year after Cu supplementation but without Zn supplementation. Heritabilities of Cu concentration were estimated in 837 calves from six calf crops, the progeny of 47 sires, using restricted maximum likelihood procedures with an animal model. Correlations between Cu concentration and Zn concentration were also estimated, along with correlations between Cu concentration and 6-month, 9-month and yearling live weights. The heritability estimate for Cu concentration at all times outside the autumn Zn supplementation period was 0·28±0·08 (between-animal repeatability, 0·30±0·05), and the heritability estimates for autumn Cu concentration and Zn concentration were 0·35±0·11 and 0·26±0·13, respectively. The genetic and environmental correlations between autumn Cu concentration and Zn concentration were ?0·29±0·31 and 0·15±0·11, respectively, suggesting antagonistic effects between Zn and Cu only at the genetic level, with a net (phenotypic) correlation of 0·02±0·06. Genetic correlations between Cu concentration (outside the autumn season) and 6-month, 9-month and yearling weights ranged from 0·15±0·15 to 0·17±0·16. It was concluded that serum Cu and Zn concentrations in calves were heritable traits under the grazing conditions encountered, and that index selection to increase live weights and Cu concentrations could be applied if desired.

Keywords

cattlegeneticscopperzincweight
Type
Research Article
Information
Animal Science , Volume 82 , Issue 6 , December 2006 , pp. 799 - 803
Copyright
Copyright © British Society of Animal Science 2006

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References

Cullen, N. G., Morris, C. A. and Hickey, S. M. 2006. Genetic parameters for resistance to facial eczema in dairy cattle. Proceedings of the New Zealand Society of Animal Production 66: 310–314 and 319–324.Google Scholar
Cunningham, I. J. 1950. Copper and molybdenum in relation to diseases of cattle and sheep in New Zealand. In Symposium on copper metabolism McElroy, W. D., Glass, B. pp. 246–273John Hopkins Press, Baltimore.Google Scholar
Ellison, R. S. 2002. Major trace elements limiting livestock performance in New Zealand. New Zealand Veterinary Journal 50: (Suppl.) 35–40.CrossRefGoogle ScholarPubMed
Gilmour, A. R. 1997. ASREML for testing fixed effects and estimating multiple trait variance components. Proceedings of the Association for the Advancement of Animal Breeding and Genetics 12: 386–390.Google Scholar
Grace, N. D. 1994. Managing trace element deficiencies. New Zealand Pastoral Agriculture Research Institute Ltd, Ruakura, NZ.Google Scholar
Lee, J., Grace, N. D. and Martell, S. 1991. Effect of high and sustained zinc supplements on trace element metabolism in sheep. Proceedings of the New Zealand Society of Animal Production 51: 173–177.Google Scholar
Morris, C. A., Amyes, N. C., Cullen, N. G. and Hickey, S. M. 2006. Carcass composition and growth in Angus cattle genetically selected for differences in pubertal traits. New Zealand Journal of Agricultural Research 49: 1–11.CrossRefGoogle Scholar
Morris, C. A., Towers, N. R., Wheeler, M. and Wesselink, C. 1995. Selection for or against facial eczema susceptibility in Romney sheep, as monitored by serum concentrations of a liver enzyme. New Zealand Journal of Agricultural Research 38: 211–219.CrossRefGoogle Scholar
Morris, C. A., Wilson, J. A., Bennett, G. L., Cullen, N. G., Hickey, S. M. and Hunter, J. C. 2000. Genetic parameters for growth, puberty, and beef cow reproductive traits in a puberty selection experiment. New Zealand Journal of Agricultural Research 43: 83–91.CrossRefGoogle Scholar
Smith, B. L., Towers, N. R., Munday, R., Morris, C. A. and Collin, R. G. 1997. Control of the mycotoxic hepatogenous photosensitisation, facial eczema, in New Zealand. In Toxic plants and other natural toxicants. Proceedings of the fifth international symposium on poisonous plantsSan AntonioTexasMay 1997, pp. 469–473.Google Scholar
Statistical Analysis Systems Institute 1995 JMP version 3. SAS Institute, Cary, NC.Google Scholar
Wakelin, R. L. 1992. Copper supplementation for ruminants. In Trace elements in ruminants. Proceedings of the 22nd seminar of the Society of Sheep and Beef Cattle Veterinarians of the New Zealand Veterinary AssociationNZVA Publication 145, pp. 43–51.Google Scholar
Ward, J. D., Spears, J. W. and Gengelbach, G. P. 1995. Differences in copper status and copper metabolism among Angus, Simmental and Charolais cattle. Journal of Animal Science 73: 571–577.CrossRefGoogle ScholarPubMed
Wiener, G. and Field, A. C. 1971. The concentration of minerals in the blood of genetically diverse groups of sheep. V. Concentrations of copper, calcium, phosphorus, magnesium, potassium, and sodium in the blood of lambs and ewes. Journal of Agricultural Science, Cambridge 76: 513–520.CrossRefGoogle Scholar
Wiener, G., Suttle, N. F., Field, A. C., Herbert, J. G. and Woolliams, J. A. 1978. Breed differences in copper metabolism in sheep. Journal of Agricultural Science, Cambridge 91: 433–441.CrossRefGoogle Scholar