RAPD marker variation in meat quality traits of Poll Dorset second-cross lambs selected for muscle or growth

Malau-Aduli, A.E.O., Bignell, C.W., Hegarty, R.S., Oddy, H., Johns, W., Tavassoli-Salardini, F., Smolenski, A.J., Malau-Aduli, B.S., Wells, B.B., Lane, P.A., and Clark, R.J. (2006) RAPD marker variation in meat quality traits of Poll Dorset second-cross lambs selected for muscle or growth. In: Proceedings of 52nd International Congress of Meat Science and Technology: Harnessing and Expoliting Global Opportunities. pp. 89-90. From: 52nd International Congress of Meat Science and Technology, 13-18 August 2006, University College Dublin, Ireland.

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[Extract] Crossbreeding has long been recognised as a powerful tool for exploiting genetic differences between two or more breeds to harness hybrid vigour in the offspring as a means of improving traits of economic importance. The growth and carcass merit of crossbred lambs is significant to the efficiency of production in the Australian meat sheep industry because the national flock is predominantly based on Merino. The development of DNA-based genetic markers has had a revolutionary impact on animal genetics in that genetic variation can be observed and exploited in the entire genome at the molecular level. Applications of DNA markers include investigations of genetic variability and inbreeding, species and strain identification, parentage assignment, the construction of high-resolution genetic linkage maps and identification of major genes for use in marker-assisted selection (Liu and Cordes 2004). Molecular markers can be classified into type I and type II markers. The former are markers associated with genes of known function, while the latter are associated with anonymous genomic segments. Random amplified polymorphic DNA (RAPD) markers are type II markers because their bands are amplified from anonymous genomic regions via the polymerase chain reaction. This research focuses on the prospects of RAPD markers distinguishing between Poll Dorset crossbred progeny carrying the genes for muscle or growth on the basis of their rams selected for high estimated breeding values (EBV) for the two traits.

Item ID: 35670
Item Type: Conference Item (Presentation)
ISBN: 978-90-8686-010-4
Date Deposited: 21 Jul 2015 22:43
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070202 Animal Growth and Development @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830310 Sheep - Meat @ 100%
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