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Studies on the gestation period and post-partum heat of Friesian cattle in Egypt

Published online by Cambridge University Press:  27 March 2009

F. I. Dessouky  and
A. H. Rakha
F. I. Dessouky
Affiliation:
National Research Centre, Dokki, Cairo
A. H. Rakha
Affiliation:
National Research Centre, Dokki, Cairo
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Extract

1. The average length of gestation in Friesian cattle under Egyptian conditions was found to be 282·28 ± 10·7 days.

2. Neither the sex of the newborn calf nor the season of the year affects the gestation period significantly.

3. The average interval between calving and the first post-partum heat was found to be 85·52 ± 2·15 days.

4. The sex of the newborn calf does not affect significantly the interval of heat after calving whereas the month and the season of the year of calving affect this interval significantly.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 57 , Issue 3 , November 1961 , pp. 325 - 327
Copyright
Copyright © Cambridge University Press 1961

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References

REFERENCES

Ahmed, I. A. & Tantawy, O. A. (1956). Emp. J. Exp. Agric. 24, 95, 213.Google Scholar
Buch, N. C., Tyler, W. J. & Casida, L. E. (1955). J. Dairy Sci. 38, 73.Google Scholar
Hammond, J. (1927). Reproduction in the Cow. Cambridge University Press.Google Scholar
Herman, H. A. & Edmondson, J. H. (1950). Res. Bull. Mo. Agric. Exp. Sta. no. 462.Google Scholar
Kenneth, J. H. (1947). Gestation periods. Bureau of Anim. Genetics, Technical Commun. no. 5 (ed. 2). Edinburgh.Google Scholar
Lasely, J. E. & Bogart, R. (1943). Res. Bull. Mo. Agric. Exp. Sta. no. 376.Google Scholar
Lewis, K. C. & Horwood, R. E. (1950). Quart. Bull. Mich. Agric. Exp. Sta. no. 22.Google Scholar
Madhkour, Y. H. (1949). Relationship between length of gestation and sex of progeny. Thesis, Fac. Agric. Fouad I University.Google Scholar
Oloufa, M. M. (1951). J. Anim. Sci. 10, 1028.Google Scholar
Ragab, M. T. & Asker, A. A. (1951). Indian J. Dairy Sci. 4, 159.Google Scholar
Tantawy, O. A. & Ahmed, I. A. (1953). Alex. J. Agric. Res. 1, 1.Google Scholar