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Theses/Dissertations

California Polytechnic State University, San Luis Obispo

Dairy cattle

2009

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Selecting, Marketing And Rebuilding A Herd Of Genetically Superior Animals, Katherine Rector Dec 2009

Selecting, Marketing And Rebuilding A Herd Of Genetically Superior Animals, Katherine Rector

Dairy Science

No abstract provided.


Viability Of Alternative Genetic Improvement Strategies Using Whole Genome Selection On Commercial Dairy Operations, Levi W.M. Gassaway Jun 2009

Viability Of Alternative Genetic Improvement Strategies Using Whole Genome Selection On Commercial Dairy Operations, Levi W.M. Gassaway

Master's Theses and Project Reports

The objective of this thesis was to determine the viability of alternative genetic improvement strategies (GIS). Each alternative GIS combined the use of whole genome selection (WGS) with common reproductive methods (non-sexed semen artificial insemination (AI), sexed semen AI, embryo transfer utilizing non-sexed semen AI) that can be found on a commercial dairy operation. The viability of each GIS was determined using a discounted gene flow model, designed with parameters of a typical western dairy operation, to evaluate the following variables: reproductive method, selection intensity, accuracy of prediction and female age-class. Of the GIS investigated, a heifer-based strategy that used ...