Table of Contents
ISRN Veterinary Science
Volume 2013, Article ID 148030, 3 pages
http://dx.doi.org/10.1155/2013/148030
Research Article

A Proposed Selection Index for Jersey Cattle in Zimbabwe

1Malawi College of Forestry and Wildlife, Private Bag 6, Dedza, Malawi
2Department of Animal Science, Faculty of Agriculture, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe

Received 5 February 2013; Accepted 28 February 2013

Academic Editors: P. Butaye and J. F. Hocquette

Copyright © 2013 Edward Missanjo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A multitrait selection index for Zimbabwean Jersey cattle was constructed. The breeding objective was defined in terms of production and functionality traits. The production component of the index included milk yield , butterfat yield , protein yield , butterfat percent , and protein percent , while the functional component included the somatic cell count (SCC). The index was termed as . The accuracy of the index was 91.1%, and the correlation between this index and the aggregate breeding objective was 0.954. A selection index is more important in the selection of sires and cows. This leads to the greatest genetic progress and hence productivity in the dairy sector. Therefore, the application of the selection index developed is necessary if the dairy cattle industry is to maximise the exploitation of genetics and to improve its relative competitive position.