Skip to main content Accessibility help
×
Home

Crossbreeding beef cattle in Western Uganda 3. Genetic analysis of body weight

  • J. C. M. Trail (a1), G. D. Sacker (a1) and I. L. Fisher (a1)

Summary

Genetic influences on body weights, taken at three-monthly intervals from birth to two years, were measured in the progeny of Angus, Boran and Red Poll bulls mated to Ankole, Boran and local Zebu cows. At two years old, progeny of Angus and Red Poll sires were 9% heavier than progeny of Boran sires. Progeny of Boran dams were 15% heavier than progeny of Zebu dams and 8% heavier than progeny of Ankole dams at two years. Differential performance by progeny of Ankole dams in different years suggested that genetic × environment interaction might be of some importance, and indicated the necessity of testing breed types over several years. Low and variable heritability estimates of weight-for-age up to two years old, and significant hybrid vigour effects on weight, indicated that in this environment, exploitation of hybrid vigour could be of great importance. Repeatability estimates for calf pre-weaning weights averaged 0·42.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Crossbreeding beef cattle in Western Uganda 3. Genetic analysis of body weight
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Crossbreeding beef cattle in Western Uganda 3. Genetic analysis of body weight
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Crossbreeding beef cattle in Western Uganda 3. Genetic analysis of body weight
      Available formats
      ×

Copyright

References

Hide All
Blackwell, R. L., Knox, J. H., Shelby, C. E. and Clark, R. T. 1962. Genetic analysis of economic characteristics of young Hereford cattle. J. Anim. Sci. 21: 101107.
Brinks, J. S., Clark, R. T., Kieffer, N. M. and Quesenberry, J. R. 1962. Genetic and environmental factors affecting performance of Hereford bulls. J. Anim. Sci. 21: 777786.
Brinks, J. S., Clark, R. T., Kieffer, N. M. and Urick, J. J. 1964. Estimates of genetic, environmental and phenotypic parameters in range Hereford females. J. Anim. Sci. 23: 711716.
Carter, R. C. and Kincaid, C. M. 1959. Estimates of genetic and phenotypic parameters in beef cattle. III. Genetic and phenotypic correlations among economic characters. J. Anim. Sci. 18: 331335.
Gregory, K. E., Blunn, C. T. and Baker, M. L. 1950. A study of some of the factors influencing the birth and weaning weights of beef calves. J. Anim. Sci. 9: 338346.
Harvey, W. R. 1960. Least-squares analysis of data with unequal subclass numbers. United States Department of Agriculture, ARS-20-8.
Koch, R. M. 1951. Size of calves at weaning as a permanent characteristic of range Hereford cows. J. Anim. Sci. 10: 768775.
Koch, R. M. and Clark, R. T. 1955. Genetic and environmental relationships among economic characters in beef cattle. I. Correlation among paternal and maternal half-sibs. J. Anim. Sci. 14: 775785.
Koger, M. and Knox, J. M. 1947. The repeatability of the yearly production of range cows. J. Anim. Sci. 6: 461466.
Minyard, J. A. and Dinkel, C. A. 1965. Heritability and repeatability of weaning weight in beef cattle. J. Anim. Sci. 24: 10721074.
Robertson, Alan. 1959. [Population genetics and quantitative inheritance.] In Handbuch der Tierzüchtung, Bd. 2, pp. 77104. Paul Parey, Hamburg and Berlin.
Sacker, G. D., Trail, J. C. M. and Fisher, I. L. 1971. Crossbreeding beef cattle in Western Uganda. 2. Environmental influence on body weight. Anim. Prod. 13: 143152.
Shelby, C. E., Harvey, W. R., Clark, R. T., Quesenberry, J. R. and Woodward, R. R. 1963. Estimates of phenotypic and genetic parameters in ten years of Miles City R.O.P. steer data. J. Anim. Sci. 22: 346353.
Swiger, L. A. 1961. Genetic and environmental influences on gains of beef cattle during various periods of life. J. Anim. Sci. 20: 183188.
Swiger, L. A., Koch, R. M., Gregory, K. E. and Arthaud, V. H. 1961. Effect of length of the feeding period on accuracy of selection for gain and feed consumption in beef cattle. J. Anim. Sci. 20: 802808.
Trail, J. C. M., Sacker, G. D. and Fisher, I. L. 1971. Crossbreeding beef cattle in Western Uganda. 1. Performance of Ankole, Boran and Zebu cows. Anim. Prod. 13: 127141.
Warwick, E. J. 1958. Fifty years of progress in breeding beef cattle. J. Anim. Sci. 17: 922943.

Crossbreeding beef cattle in Western Uganda 3. Genetic analysis of body weight

  • J. C. M. Trail (a1), G. D. Sacker (a1) and I. L. Fisher (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed