A
Anonymous
I have a unregistered heifer that I had bred, but I guess didn't take because a couple of weeks after bringing her home, she bred to my bull(her father). Is this something to wory about?
jfont":3dp69rx8 said:It's not something to brag about, but I wouldn't worry about it. The first inbred calf should be fine. Now if this calf happens to be a heifer and breeds back to her grandfather, you could start running into trouble. It's not a good practice, but things happen.
Suggest you get Jim Lent's book- The basis of Linebreeding- contact him at [email protected] The "rule" is to not have over 50% of any one animal in the pedigree - Example 50% sire- 50%Dam, the next generation the 4 animals are adding 25% each to the equation, then 12 1/2% .... Just add up the % each has and and you will see that an example of half brother to half sister mating is fine - and has been the success of many of the great bulls of most breeds - good example of this is EXT in the Angus. When the % goes over 50% - you can start to see problems. Line breeding is great - but it will bring out the problems as well as the goodness - so culling is Mandatory!! Jim's book starts out with a biblical example - really got my eyes opened after reading that book.sidney411":oapvn7y7 said:What is the difference in breeding to daughter but not grandaughter? Do you mean the "grandaughter" resulting from breeding the bull to his daughter and getting a heifer than breeding that heifer to the grandfather bull also? Would it be the same if you bred his daughter to another bull and breed the resulting granddaughter back to the mothers sire (grandfather bull)?
guest":16ftf1nw said:I have a unregistered heifer that I had bred, but I guess didn't take because a couple of weeks after bringing her home, she bred to my bull(her father). Is this something to wory about?
Larry Sansom":1guq8ljo said:Suggest you get Jim Lent's book- The basis of Linebreeding- contact him at [email protected] The "rule" is to not have over 50% of any one animal in the pedigree - Example 50% sire- 50%Dam, the next generation the 4 animals are adding 25% each to the equation, then 12 1/2% .... Just add up the % each has and and you will see that an example of half brother to half sister mating is fine - and has been the success of many of the great bulls of most breeds - good example of this is EXT in the Angus. When the % goes over 50% - you can start to see problems. Line breeding is great - but it will bring out the problems as well as the goodness - so culling is Mandatory!! Jim's book starts out with a biblical example - really got my eyes opened after reading that book.
TXBobcat":2o0r9xr9 said:Larry Sansom":2o0r9xr9 said:Suggest you get Jim Lent's book- The basis of Linebreeding- contact him at [email protected] The "rule" is to not have over 50% of any one animal in the pedigree - Example 50% sire- 50%Dam, the next generation the 4 animals are adding 25% each to the equation, then 12 1/2% .... Just add up the % each has and and you will see that an example of half brother to half sister mating is fine - and has been the success of many of the great bulls of most breeds - good example of this is EXT in the Angus. When the % goes over 50% - you can start to see problems. Line breeding is great - but it will bring out the problems as well as the goodness - so culling is Mandatory!! Jim's book starts out with a biblical example - really got my eyes opened after reading that book.
Guess I'm still a little confused on this one. When considering breeding two animals together, do you add the percentages in both animals together, and if comes to more than 50%, don't breed, or is it the amount each animal starts out with?
If you have 2 calves (1 bull, 1 hefier), both with same sire, and the bull calf bred the hefier, the resulting calf would still be 50% of the original sire - correct?