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Screening for Footrot Resistant Gene Markers and White Blood Cell Types in Katahdin and Katahdin Crossbred Sheep

Tuesday, August 19, 2014
Posters (The Westin Bayshore)
Tumen Wuliji , Department of Agriculture and Environmental Sciences, Lincoln University, Jefferson City, MO
William R. Lamberson , University of Missouri, Columbia, MO
Samaneh Azarpajouh , Department of Agriculture and Environmental Sciences, Lincoln University, Jefferson City, MO
Jonathan GH Hickford , Lincoln University, Lincoln, New Zealand
Bruce C. Shanks , Department of Agriculture and Environmental Sciences, Lincoln University, Jefferson City, MO
J. D. Caldwell , Department of Agriculture and Environmental Sciences, Lincoln University, Jefferson City, MO
Abstract Text:

Footrot is the most costly and impacting animal welfare disease in the small ruminants. The putative gene group with variation from highly resistance to highly susceptible allele is identified and a DNA marker (DQA2) is being developed for marker assisted selection in sheep. Katahdin and Katahdin crossbred sheep were screened for footrot resistant gene markers. A value for a pair of alleles was derived and animals were classed into five categorical groups (1, 2, 3, 4, and 5) from the highest to lowest resistance to footrot. White blood cell types were analyzed in the progeny groups. Both allelic and genotypic distributions were significantly (P < 0.01) different in the five gene marker score groups. There was no difference in white blood types by marker score groups but a significant difference for HM (P < 0.05) between breeds.

Keywords: Katahdin sheep, Footrot resistant gene marker, Breeding

See more of: Posters: Sheep and Goats Breeding (Group 3)
See more of: Species Breeding: Sheep and goats
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