Raadsma, H.W., Jonas, E., Zenger, K.R., Cavanah, C.A., Lam, M.K., and Thomson, P.C. (2009) Mapping QTL for early growth and maternal performance in sheep. In: Proceedings of the AAABG 18th Conference (18) pp. 640-643. From: 18th AAABG Conference 2009, 28 September - 1 October 2009, Barossa Valley, SA, Australia.

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Abstract

This paper describes QTL for bodyweight, and growth rate between week 2 after birth up to 43 weeks of age, and maternal performance based on milk yield and milk energy content in Awassi-Merino backcross progeny. QTL were mapped using a population specific framework map with 50 QTL (LOD>2) mapped for body weight and growth rate, and six QTL for milk yield and milk energy content. The majority of QTL for bodyweight and growth showed a significant sex by QTL interaction with wethers showing stronger QTL effects than ewes. Fewer QTL were detected for body weight or growth in the period from 2 to 25 weeks (range 1-4 QTL) whereas for the period from 25-43 weeks and over the entire growth period a greater number of QTL were observed (range 5-8). Implementation of multiple QTL for early growth and maternal performance will be difficult in sheep with need for validation and tracking in each population.

Item ID:	49823
Item Type:	Conference Item (Research - E1)
ISBN:	978-0-646-52103-9
Related URLs:	Organisation
Date Deposited:	10 Aug 2017 02:23
FoR Codes:	07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070201 Animal Breeding @ 100%
SEO Codes:	83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8305 Primary Animal Products > 830599 Primary Animal Products not elsewhere classified @ 100%
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