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The genetic parameters of lactation using a biological model on cows from UK dairy herds

Published online by Cambridge University Press:  23 November 2017

G. E. Pollott  and
B. Albarran-Portillo
G. E. Pollott*
Affiliation:
SAC, Midlothian, United Kingdom
B. Albarran-Portillo
Affiliation:
Imperial College London, London, United Kingdom
*
Email:[email protected]
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Extract

Recently, Pollott (2000, 2004) has proposed a biological model of lactation which mimics the three processes of cell proliferation, apoptosis and milk secretion rate per cell during lactation. This model has been used on dairy sheep and cattle to investigate several aspects of its utility to account for the factors which influence the milk production during lactation. Pollott and Gootwine (2001) and Pollott (2002) reported genetic parameters of the biological model for a single flock/herd sheep respectively. Here we report an extensive genetic study of over 400 UK dairy herds using the biological model of lactation.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 62
Copyright
Copyright © The British Society of Animal Science 2007

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References

Pollott, G. E. (2000) A biological approach to lactation curve analysis for milk yield. Journal of Dairy Science, 83: 2448–2458.Google Scholar
Pollott, G. E. (2002) Using a biological model of lactation to reassess dairy recording and genetic evaluation. Proc. of the 7th WCGALP. CD-ROM communication No. 01-39.Google Scholar
Pollott, G. E. (2004) Deconstructing milk yield and composition during lactation using biologically-based lactation models. Journal of Dairy Science, 87:2375–2387.Google Scholar
Pollott, G. E. and Gootwine, E. (2001) A genetic analysis of complete lactation milk production in Improved Awassi sheep. Livestock Production Science, 71: 37–47.CrossRefGoogle Scholar