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There are not many excuses to keep an animal that could not handle the first time calving. Is there really such a shortage of heifers? Keep more of the young ones.

I have most of mine calve the first three weeks of may, it is when we have great new growth. It is more economical and easier to compare production between individuals when they are all treated the same with forage and management. To each his own. In a system like this a late calver or a poor...

Every ejaculation is equal. The only exception to ths is that old bulls that have not been in use for a while may shoot blanks the first mount, but that sorts itself out if he can mount again. Young bulls keep the seed fresh. How to know which bulls? All heifers go to breeding, we cull first on...

Genetic drift is the change in the frequency of a gene variant (allele) in a population due to random sampling of organisms. The alleles in the offspring are a sample of those in the parents, and chance has a role in determining whether a given individual survives and reproduces. The more even...

Inbreeding depression exists in the way it is measured. Four generations of full sibling matings with random choice of breeding specimens, it has been replicated with lots of different species such as swine, dogs, guinea pigs, rabbits, you name it. It has to be random to be replicable, if not...

It is completely out of the question that it is a cow problem, the bull can take care of five times as many cows. If they cycled, he has bred them. If he has bred them it is not his fault they are not pregnant. Why would the bull be infertile with some cows while fertile with others? on this...

Well, it means Breeding Soundness Exam. I do not have one, what ever you like that to mean. Our calving season is two months. 80+ percent calve in the first three weeks, then 15% or so in the second three. When cows calve is a cow issue not a bull issue. The bulls grow up here, yes. They are...

I typically run one yearling bull for every ten cows, all of them together in one herd. Most cows mate with many bulls, most bulls mate with many cows. I still cull open or late cows. And scrotal circumference is not a consideration at all, nor is BSE; no one does these things here. We cull...

A lot. His Sire might lower his Dam's contribution; seveteen years is still a good cow.

Raise your own cows. Buying cows = not breeding. Raising your own cattle, making a surplus, and culling to get back to the right number, rinse and repeat = breeding. If one can not accumulate the effects of culling and bull choices it does not matter how long the process takes. Auction cattle...

My entire breeding program focuses on longevity in the producing cow. Longevity might be important, but what lies underneath is far more important - the cow that does not fail with her fourteenth calf has not failed before either! The genetics of cows that end up virtually resistant to culling...

Bigfoot is right, sell the cow. She makes you no money for a year. If you graft another callfto her it is a different matter, then probably she could get pregnant and raise her own next year. Difficult birth dose not have to mean you have to cull,but on the other hand when you cull problem cows...

Normal.

If intended as a terminal cross it will be fine. A reasonably easy calving can be expected.

They are old enough to breed. Now buy a bull. (you are now responsible for the lives of these cattle - act fast and read up on how to keep them, or better still sell them to someone who has a clue and buy no new cattle until you know anything at all) :2cents:

There is no genetic difference between son/Dam and a daughter/Sire mating. A thing come to mind; the frequency of this type mating per year. If there is only one bull in the herd, there is only one cow bred to her son that year. So whatever happens it is a tiny fraction of all calves involved...

So this is an issue with Brahman cattle, and with Simmenthals? Any other breeds where late cycling in heifers is an issue?

I am fine with heifers starting to cycle at twelve months. When we let the bulls in the youngest possible heifer is thirteen months, most are of course 15 months when the bulls get there. As long as they are bred I am fine, if not bred they are culls no matter why they were not bred. The thread...

Hereford bulls do no good on Angus bulls.You need cows. :2cents: :pop:

There is one more question to be asked: Do you have two cows and both are open (then it is either management or a bull issue) or do you have these two open cows and 37 pregnant cows? Then it is a cow issue.