Mapping the quantitative trait loci (QTL) for body shape and conformation measurements on BTA1 in Japanese Black cattle

Malau-Aduli, Aduli Enoch Othniel, Niibayashi, Tomomi, Kojima, Takatoshi, Oshima, Kazunaga, Mizoguchi, Yasushi, and Komatsu, Masanori (2005) Mapping the quantitative trait loci (QTL) for body shape and conformation measurements on BTA1 in Japanese Black cattle. Animal Science Journal, 76 (1). pp. 19-27.

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The detection and mapping of segregating quantitative trait loci (QTL) that influence withers height, hip height, hip width, body length, chest width, chest depth, shoulder width, lumbar width, thurl width, pin bone width, rump length, cannon circumference, chest girth, abdominal width and abdominal girth at weaning was conducted on chromosomal regions of bovine chromosome one. The QTL analysis was performed by genotyping half-sib progeny of five Japanese Black sires using microsatellite DNA markers. Probability coefficients of inheriting allele 1 or 2 from the sire at specific chromosomal locations were computed. The phenotypic data of progeny were regressed on these probability coefficients in a within-common-parent regression analysis using a linear model that included fixed effects of sex, parity and season of birth, as well as age as a covariate. F-statistics were calculated every 1 cM on a linkage map. Permutation tests of 10 000 iterations were conducted to obtain chromosome-wide significance thresholds. A significant QTL for chest width was detected at 91 cM in family 3. The detection of this QTL boosts the prospects of implementing marker-assisted selection for body conformation traits in Japanese Black beef cattle.

Item ID: 41051
Item Type: Article (Research - C1)
ISSN: 1740-0929
Keywords: beef cattle; body shape; conformation; Japanese Black; quantitative trait loci (QTL) mapping
Funders: Japan Society for Promotion of Science (JSPS)
Date Deposited: 02 Dec 2015 00:47
FoR Codes: 06 BIOLOGICAL SCIENCES > 0604 Genetics > 060408 Genomics @ 50%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070201 Animal Breeding @ 50%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830301 Beef Cattle @ 100%
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