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The effect of age, live-weight and rate-of-gain on dressing percentage and non-saleable fat content of Israel-Friesian bull calves†

Published online by Cambridge University Press:  02 September 2010

D. Levi ,
M. Soller  and
A. Shilo
D. Levi
Affiliation:
The Volcani Institute of Agricultural Research, Rehovot, Israel
M. Soller
Affiliation:
The Volcani Institute of Agricultural Research, Rehovot, Israel
A. Shilo
Affiliation:
The Volcani Institute of Agricultural Research, Rehovot, Israel
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Extract

Data were collected during 1961–2 on the live-weight, age and warm carcass weights of 83 lots of Israel-Friesian bull calves, 525 animals in all, the offspring of 26 sires. For varying numbers of these animals weight of various non-saleable fat components, including ruminal fat, kidney fat, inguinal fat and scapular fat were also obtained. Ruminal fat alone and ruminal fat plus kidney fat were found to be highly correlated with total non-saleable fat (r = 0·84 and 0·94, respectively). Heritability of dressing percentage was 0·20, of live-weight rate-of-gain 0·92, and of carcass rate-ofgain 0·49. The genetic correlation between live-weight and carcass weight was 0·7. Between-lot correlations indicated that increased rate-of-gain achieved through management will be accompanied by decreased dressing percentage and increased non-saleable fat content.

Type
Research Article
Information
Animal Production , Volume 9 , Issue 1 , February 1967 , pp. 115 - 119
Copyright
Copyright © British Society of Animal Science 1967

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References

REFERENCES

Bar-Anan, R., Angel, Huguette, & Soller, M., 1962. Rate-of-gain of Israel-Friesian sire progeny groups. Israel J. agric. Res., 12: 75–81.Google Scholar
Blackwell, R. L., Knox, J. H., Shelby, C. E., & Clark, R. T., 1962. Genetic analysis of economic characteristics of young Hereford cattle. J. Anim. Sci., 21: 101–107.CrossRefGoogle Scholar
Henderson, C. R., 1953. Estimation of variance and covariance components. Biometrics, 9: 226–252.CrossRefGoogle Scholar
Knapp, B. F. Jr., & Nordskog, A. W., 1946. Heritability of growth and efficiency in beef cattle. J. Anim. Sci., 5: 62–70.Google Scholar
Knapp, B. F. Jr., & Clark, R. T., 1950. Revised estimates of heritability of economic characteristics in beef cattle. J. Anim. Sci., 9: 582–587.Google Scholar
Mason, I. L., 1964. Genetic relations between milk and beef characters in dual-purpose cattle breeds. Anim. Prod., 6: 31–45.Google Scholar
Robertson, Alan, 1959. Populationsgenetik und quantitative Verebung. In Handbuch der Tierzüchtung. Vol. 2. pp. 77–104. Paul Parey, Hamburg and Berlin.Google Scholar
Shelby, C. E., Clark, R. T., & Woodward, R. R., 1955. The heritability of some economic characteristics of beef cattle. J. Anim. Sci., 14: 372–385.Google Scholar
Soller, M., Bar-Anan, R., & Shilo, A., 1966. A note on heritability of live-weight-forage in Israel-Friesian bull calves and its genetic correlation with milk production. Anim. Prod., 8: 157–158.Google Scholar