HerefordSire":sedaa7cn said:
Are the four new calves 75% 20X? Also, what percentage does your 107H line bred cow's heifer have of 107H genes?
No, to be 75% 20X, they'd have to be 20X bred back to HIS daughters. They are 37.5% 20X. The cow(dam of the heifer) is 34.375% Enforcer 107H, a maternal granddaughter and traces back to him twice on the top side.(25 + 6.25 + 3.125 = 34.375%). She's a rather average looking cow, but she has really nicked well with my 20X son - producing 4 outstanding heifers and a son that I also used a little before selling him. I'll bet that most of my herd will eventually trace back to her, once I start retaining more bulls and linebreeding.
I haven't figured how much 107H blood is in 20X. But my bull's(20X son) dam is a straight Line 1 cow, so there isn't any Enforcer 107H back there.
George