maine's supposedly have a 6% twinning rate, one of the highest of any breed, without selecting for it, which it probably was at one point.
it will probably be very easy to develope a test for this as it works it's way up the "defect" list. what is the twinning rate of a purebred herd versus a commercial herd?
i've posted this link before
http://www.ansci.wisc.edu/research/twin/index.html
some pretty amazing rates from the sire side. no news letter since 2003, though i've contacted him a couple of times (Dr. Brian Kirkpatrick)
USDA ID#928507, 26.8 twinning rate EBV (USDA), polled.
Owner: Dave Serfling.
Contact Dave Serfling at 507-765-2797.
USDA ID#888521, 47.9 twinning rate EBV (USDA),
Owner: Daren Cyphers.
Contact ABS Global Inc, 1 - 800 - ABS - STUD.
USDA ID#949673, 42.8 twinning rate EBV (USDA).
Owner: Daren Cyphers.
Contact Hoffman A.I. Breeders, 801 - 753 - 7883.
USDA ID #918521, 50.7 twinning rate EBV (USDA),
Owner: Sean Smith.
Contact Sean Smith, 1211 240th Avenue, Thurman, IA 51654. 712-628-3005.
USDA ID#969549, 55.9 twinning rate EBV (USDA).
Owner: Dave Serfling.
Contact Dave Serfling at 507-765-2797.
USDA ID#998628, 64.0 twinning rate EBV (USDA), progeny test not completed
Owner: ProlifiCow Inc.
Contact Brian Kirkpatrick, 5615 Longford Terrace, Madison, WI 53711, 608-271-6904.
USDA ID#969381, 67.3 twinning rate EBV (USDA),
Owner: ProlifiCow Inc.
Contact Brian Kirkpatrick, 5615 Longford Terrace, Madison, WI 53711, 608-271-6904.