Hostname: page-component-5c6d5d7d68-pkt8n Total loading time: 0 Render date: 2024-08-08T02:51:35.667Z Has data issue: false hasContentIssue false
  • English
  • Français

Herd size and its genetical significance in pedigree cattle breeding

Published online by Cambridge University Press:  27 March 2009

H. P. Donald  and
A. A. El Itriby
H. P. Donald
Affiliation:
Institute of Animal Genetics, University of Edinburgh
A. A. El Itriby
Affiliation:
Institute of Animal Genetics, University of Edinburgh
Get access Rights & Permissions [Opens in a new window]

Extract

The average numbers of females of all ages (herd size) in pedigree herds of Jerseys, Guernseys, and Red Polls in 1939 were found to be 25, 22 and 42 respectively. Of the herds listed, 15–20% made no herdbook entries and were of much smaller than average size. Excluding these, the average numbers become 29, 26 and 49. The number of females entered in the herdbook during 1939 was about 20% of the total number of females of all ages. The same proportion was found in all herd size groups except the smallest where it was lower. As a general guide, therefore, to breed and regional differences in herd size in all the major breeds, the average number of herdbook entries of females has been multiplied by 5.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 35 , Issue 2 , April 1945 , pp. 84 - 94
Copyright
Copyright © Cambridge University Press 1945

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

Alsop, J. W. (1944). Ayr. Digest, 30, 4, 6.Google Scholar
Bridges, A. (1943). Milk Production. Agric. Econ. Res. Inst., Oxford.Google Scholar
Candy, B. A. et al. (1943). 19th Ann. Rep. N.Z. Dairy Board.Google Scholar
Donald, H. P. (1944). Vet. Rec. 56, 352–3.Google Scholar
Edwards, J. (1941). Farm. Econ. 3, 174–5.Google Scholar
Fisher, R. A. (1930). The Genetical Theory of Natural Selection. Oxford.Google Scholar
Garner, F. H. (1944). The Cattle of Britain. London.Google Scholar
Haring, F. (1943). Mitt. Landw. (Berl.), 58, 545–6.Google Scholar
Hazel, L. N. (1943). Genetics, 28, 476–90.CrossRefGoogle Scholar
Hoard's Dairyman (1942). 87, 669.Google Scholar
Hume, C. M. (1942). 18th Ann. Rep. N.Z. Dairy Board.Google Scholar
Kislovsky, D. (1940). Problems on the Origin, Evolution and Formation of Breeds of Domestic Animals. Ed., Komarov, V. L.. Moscow and Leningrad: Acad. Sci., U.S.S.R., pp. 191–289. (English Summary.)Google Scholar
Larsen, L. H. (1935). Denmark: Agriculture. Agric. Council, Copenhagen.Google Scholar
Northern Ireland Veterinary Medical Association (1944). Vet. Rec. 56, 258–64.Google Scholar
Paterson, J. A. (1943). Trans. High. Agric. Soc. Scot. 55, 107–16.Google Scholar
Smith, A. D. B. & Robison, O. J. (1931). J. Agric. Sci. 21, 136–49.Google Scholar
Ward, A. H. (1942). 18th Ann. Rep. N.Z. Dairy Board.Google Scholar
Wright, S. (1942). Bull. Amer. Math. Soc. 48, 223–46.CrossRefGoogle Scholar