Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-20T07:22:07.744Z Has data issue: false hasContentIssue false
  • English
  • Français

Crossbreeding beef cattle in Western Uganda 5. Growth and carcass evaluation of castrated males

Published online by Cambridge University Press:  02 September 2010

J. C. M. Trail ,
G. D. Sacker  and
H. J. S. Marples
J. C. M. Trail
Affiliation:
Ministry of Animal Industry, Game and Fisheries, Uganda
G. D. Sacker
Affiliation:
Ministry of Animal Industry, Game and Fisheries, Uganda
H. J. S. Marples
Affiliation:
Ministry of Animal Industry, Game and Fisheries, Uganda
Get access

Summary

Growth from two years to three years and carcass yield and composition were evaluated in nine types of steers produced by mating Angus, Boran and Red Poll bulls to Ankole, Boran and local Zebu cows. One hundred and nine steers were slaughtered at the average age of 3 years and 1 month.

At three years of age, steers by Angus and Red Poll sires were 7% heavier than steers by Boran sires, while progeny of Boran and Ankole dams were 14% heavier than progeny of Zebu dams. Significant hybrid vigour effects on weight-for-age were found.

After adjustment for weight and age at slaughter, linear carcass measurements supported the impression that steers by Angus sires were more compact and blocky than steers by Red Poll and Boran sires and that progeny of Ankole dams were longer in the leg and body than progeny of Boran and Zebu dams. Steers by Red Poll sires appeared to have a higher fat content than steers by Angus and Boran sires on the basis of dissection of a tenth rib sample joint. Progeny of Boran dams had a higher dressing percentage than progeny of Ankole and Zebu dams. Hybrid vigour appeared to have little effect on carcass traits.

Type
Research Article
Information
Animal Production , Volume 13 , Issue 1 , February 1971 , pp. 171 - 180
Copyright
Copyright © British Society of Animal Science 1971

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Agricultural Research Council. 1965. Recommended Procedures for use in the Measurement of Beef Cattle and Carcasses. Agricultural Research Council, London.Google Scholar
Berg, R. T. and Butterfield, R. M. 1966. Muscle: bone ratio and fat percentage as measures of beef carcass composition. Anim. Prod. 8: 1–11.Google Scholar
Duncan, D. B. 1955. Multiple range and multiple F tests. Biometrics 11: 1–42.CrossRefGoogle Scholar
Kramer, C. Y. 1956. Extension of multiple range tests to group means with unequal numbers of replications. Biometrics 12: 307–310.CrossRefGoogle Scholar
Ledger, H. P. and Hutchison, H. G. 1962. The value of the tenth rib as a sample joint for the estimation of lean, fat and bone in carcasses of East African Zebu cattle. J. agric. Sci., Camb. 38: 81–88.CrossRefGoogle Scholar
Mason, I. L. 1965. Estimation of beef carcass composition from sample joint dissection and other measurements. Mimeograph, 17 pp. Agricultural Research Council 676/65.Google Scholar
Pomeroy, R. W. 1965. Carcass evaluation. Wld Rev. Anim. Prod. 1: 83–88.Google Scholar
Sacker, G. D., Trail, J. C. M. and Fisher, I. L. 1971. Crossbreeding beef cattle in Western Uganda. 4. Calving percentage and mothering ability of crossbred heifers. Anim. Prod. 13: 165–170.Google Scholar
Trail, J. C. M., Sacker, G. D. and Fisher, I. L. 1971a. Crossbreeding beef cattle in Western Uganda. 1. Performance of Ankole, Boran and Zebu cows. Anim. Prod. 13: 127–141.Google Scholar
Trail, J. C. M., Sacker, G. D. and Fisher, I. L. 1971b. Crossbreeding beef cattle in Western Uganda. 3. Genetic analysis of body weight. Anim. Prod. 13: 153–163.Google Scholar