Genetics for the bovine practitioner

Jonsson, N. N. and Piper, E. K. (2015) Genetics for the bovine practitioner. In: Cockcroft, P. D. (ed.) Bovine Medicine [3rd ed.]. John Wiley & Sons, Ltd., pp. 305-311. ISBN 9781444336436 (doi:10.1002/9781118948538.ch31)

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Abstract

The bovine genome consists of about 22 000 protein-coding genes, coded by about three billion base pairs (2.87 Gbp), organised into 30 chromosomes (29 autosomes plus X, Y), giving a diploid number (2n) of 60 chromosomes. Domestication, formation of breeds, and selection of animals within breed for milk production or other traits, have caused tight genetic bottlenecks and relatively low effective population sizes in most modern breeds. The accuracy of parentage tests is important to stud producers and commercial cattle producers who wish to use multiple-sire mating systems in their herds and allocate calves to their correct sires. Parentage and paternity tests are performed using genetic (DNA) markers. Many inherited diseases caused by single autosomal genes can now be detected by PCR targeting the causal mutation responsible for the disorder, usually a SNP or insertion/deletion mutation.

Item Type:Book Sections
Status:Published
Glasgow Author(s) Enlighten ID:Jonsson, Professor Nicholas
Authors: Jonsson, N. N., and Piper, E. K.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Publisher:John Wiley & Sons, Ltd.
ISBN:9781444336436
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