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Genetic and environmental factors affecting the incidence of difficult calving and perinatal calf mortality in Israeli-Friesian dairy herds

Published online by Cambridge University Press:  02 September 2010

R. Bar-Anan ,
M. Soller  and
J. C. Bowman
R. Bar-Anan
Affiliation:
Ministry of Agriculture, Hakirya, Tel Aviv, Israel
M. Soller
Affiliation:
Department of Genetics, Hebrew University, Jerusalem, Israel
J. C. Bowman
Affiliation:
Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT
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Summary

Records of 178 593 monoparous births between 1964 and 1970 in Israeli-Friesian dairy cattle were analysed for information on environmental and genetic factors affecting calving difficulties and perinatal mortality. The incidence of difficult calvings (DC) and peri-natal calf mortality (PM) were 6·9 and 9·1% in heifer calvings, and 1·6 and 4·1% in cow calvings. Calving characters were not related t o heifer age nor cow parity, but there was a seasonal trend in heifer calvings, with both DC and PM being high in winter and low in summer calvings.

Heritability estimates for calf-genotype effects on PM were 0·042 in heifer calvings and 0·013 in cow calvings. Heritability estimates for dam-genotype effects on PM were 0·018 and 0·004 respectively. Heritability estimates for DC were similar t o those for PM. The genetic correlations between DC and PM in the same class of calvings ranged between 0·8 and 0·9, while the environmental correlations were considerably lower, about 0·3. The genetic correlations between the calf-genotype effects in heifer and cow calvings were about 0·5, indicating that different factors may affect heifer and cow calvings.

It is proposed that sires already proven for milk yield be tested for their calf effects in heifer calvings, using contemporary comparisons within herds and seasons. Results will be available when the sires are 6 to 6½ yr old. Sires causing fewest calving difficulties would be nominated for heifer matings, so that most heifer inseminations would be by sires proven for both yield and calving characters. Some long-term progress might be obtained if sires with a high incidence of difficulties in their heifer mates were not used to produce young sires.

Type
Research Article
Information
Animal Production , Volume 22 , Issue 3 , June 1976 , pp. 299 - 310
Copyright
Copyright © British Society of Animal Science 1976

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References

REFERENCES

Bar-Anan, R. 1971. Breeding the Israeli-Friesians. Ministry of Agriculture Extension Service, Israel. (Mimeograph.)Google Scholar
Bar-Anan, R. 1972. [Heritability estimates of some calving characters.] Züchtungskunde 44: 360–367.Google Scholar
Dreyer, D. and Leipnitz, C. 1971. [Calf losses and difficult calvings.] Tierziichter 23: 397–400.Google Scholar
Fimland, E. A., Bar-Anan, R. and Harvey, W. R. 1972. Studies on dairy records from Israeli-Friesian cattle. Ada Agric. scand. 22: 34–62.CrossRefGoogle Scholar
Lindhe, B. 1966. Dead and difficult births in cattle and measures for their prevention. Wld Rev. Anim. Prod. 2 (4): 53–58.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
Norman, H. D., McDaniel, B. T. and Dickinson, F. N. 1972. Conflicts between heritability estimates of mature equivalent and herdmate-deviation milk and fat. J. Dairy Sci. 55: 507–517.CrossRefGoogle Scholar
Robertson, A. 1959. Experimental design in the evaluation of genetic parameters. Biometrics 15: 219–226.CrossRefGoogle Scholar
Husdjursskötsel, Svensk. 1972. [Performance recording and A.I. in 1970–71.] Meddn Svensk Husdjursskotsel, No. 52.Google Scholar
Sloss, V. 1970. [Analysis of the cause of dystocia in cattle in Victoria (Australia).] Dissertation. Justus Liebig Univ., Giessen.Google Scholar
Stegenga, T. 1964. [Stillborn calves.] Tijdschr. Diergeneesk. 89: 93–97.Google Scholar
Van Dieten, S. W. J. 1965. Reproduction in cattle as a breeding problem. EAPP Comm. on Animal Genetics, Nordwijk.Google Scholar
Woodward, R. R. and Clark, R. T. 1959. A study of stillbirths in a herd of range cattle. J. Anim. Sci. 18: 85–90.CrossRefGoogle Scholar