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Changes in Milk Components Through Breeding

Published online by Cambridge University Press:  21 November 2017

G.I.T. Swanson ,
R.A. Mrode  and
M.S. Winters
G.I.T. Swanson
Affiliation:
Animal Data Centre, Lavrock Lane, Rickmansworth, Herts, WD3 3AW
R.A. Mrode
Affiliation:
Animal Data Centre, Lavrock Lane, Rickmansworth, Herts, WD3 3AW
M.S. Winters
Affiliation:
Animal Data Centre, Lavrock Lane, Rickmansworth, Herts, WD3 3AW
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Extract

In view of the major changes taking place concerning the buying and selling of milk and milk products this is an appropriate time to consider ways and means to manipulate milk components. The replacement of the Milk Marketing Boards by voluntary co-operatives and the potential changes in the pricing of milk together with changes in consumer demand raises questions over breeding objectives in relation to the emphasis on milk, fat and protein.

The total cow population in the United Kingdom (UK) in 1992 was 4.38 million of which 2.68 million were dairy cows. Prior to 1984 when quotas were introduced cow numbers remained relatively static over a period of 25 years. Since 1984 cow numbers have decreased steadily from 3.3 million to 2.68 million. The major dairy breeds together with their average yields and composition are shown in Table 1.

Type
Manipulation of Milk Components
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1994 , March 1994 , pp. 6
Copyright
Copyright © The British Society of Animal Production 1994

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References

Brotherstone, S. (1994) Genetic and phenotypic correlations between Linear Type Traits and Production Traits in Dairy Cattle. (Paper in preparation).Google Scholar
Mrode, R.A. and Swanson, G.J.T. (1994) Animal model estimates of sire x herd interactions for production traits for the major dairy breeds in the United Kingdom (Paper in preparation).Google Scholar
Pander, B .L., Hill, W.G. and Thompson, R. (1992) Genetic parameters of test day records of British Holstein-Friesian heifers. Anim. Prodn 55:11–21 Google Scholar