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CP and Dun, I think you are both overthinking the situation. They were in standing heat on the 15th so no need for GnRH because you know exactly where they are in the cycle. Lutalyse given any time between day 7 and day 14 after heat (including day 10) should work. There are too many variables...

This is incorrect. Bos taurus cattle (non-Eared) "sweat" from the tongue. I.e. They pant like dogs and stand in tanks to cool off. Bos indicus cattle including the composite breeds have sweat glands and sweat from the skin allowing for increased dissipation of heat and so a better handling of...

Not necessarily. This is where visual appraisal is not as cut and dry. A purebred, WHITE, Charolais cow is homozygous for the dilution. Her calves, when bred to a solid bull (red or black), will be mostly straw or smoke in color. If you are looking at a White cow of unknown origin with a...

You are fighting 2 different genes to get Charolais from White to Black. 1st is the diluter gene and 2nd, the base color gene, which is recessive red in Charolais cattle. There are some Charolais that are referred to as "red factor". These are Charolais cattle that are already either...

It can be done, and has been tried before. But your product would not be F1 calves, they would be F2. This means they would have, on average, half the hybrid vigor seen in the F1 calves (may not be initially observed because the F1 dams would provide maternal hybrid vigor that did not exist in...

Actually, Scrotal Circumference has been shown to be correlated to age of puberty in daughters. This is a common misconception that occurs with this trait. With many breeders pushing heifers to calve a 2 years of age, daughters of smaller scrotal bulls can be observed as being subfertile...

Sorry for the delay in response. I always calculate from AI date. Just remember that could make for some young calves when you start the synch protocol, so make sure you have the facilities to get them sorted off without getting a calf hurt.

EPD's are the most comprehensive tool available to evaluate how an animal will BREED. Actual data is useless as it can be manipulated with environment and pampering as someone has already mentioned. Ratios are a little better, but they only tell you how the animal performed in that...

It's all about what the order buyers are looking for. If you take a black no-ear #1 to a barn where all the orders are for eared #2's, that black calf will get docked. It always pays to shop around for the barn that has orders for your type of calves.

His hocks don't bother me too much but his straight pasterns do. This bull wouldn't make it in most parts of the country where any travel was involved to cover his girls. (FYI to whoever mentioned earlier...that's why he appears to walk on his toes because he has no set in his pasterns)

I would synch anything with a 30 day old calf and older. Chances are that your success rate won't be great on those shorter post-partum cows, but the hope is that the synch process will jump start them and start moving them up in the calving season so they are farther along next year. If...

The problem with this protocol is that the GnRH is a desperation attempt only. If the cows or heifers have the "correct" timing, they ovulated at 54 hrs and you are breeding at 66 and the GnRH is useless. The hope with the GnRH is to pick up a few extra pregs in the ones that did not ovulate on...

I don't know where you are located, but with purebred bulls of that age and type, it is highly likely that a reputable Hereford breeder sent them to the sale barn for a reason. I wouldn't be too keen on trying to make herd sires out of them.

If you are considering bulls of two different breeds for the same set of cows, then I am sure some degree of crossbreeding is about to happen. If you have a set of Angus cows and you are trying to choose between and Angus bull and a Hereford bull, there is not a number in the world that can do...

The "data" is the actual measurements taken in the field and reported to the respective association. EPDs are "information" regardless of accuracy. Low accuracy EPDs may be less reliable that high accuracy, but they are much more informative than actual data points.

I didn't say they don't try to account for heterosis. I said they don't accurately account for it

While it is a great idea in theory, it is just not possible. Politics aside, the science doesn't support it. There are several breeds already using a new Multi-Breed EPD model and it is a joke. The problem (and is also a problem with across breed adjustments if you read the fine print) is...

You can calculate estimates until your blue in the face, but he will still be a crossbred bull and the EPDs are virtually useless. Roll the dice and see where they fall. EPDs cannot accurately account for heterosis.

I have not used it to start non-cycling cows, but I have used the technique in donor cows and recips to tighten heat windows with the use of drugs. It is an excellent tool if you have the proper facilities to hold the calves where they still have nose to nose contact with the cows. It really...

The difference is that the Poultry and Swine industries were able to utilize intense linebreeding of the purebred lines before they formed a cross of two specialized sire lines (terminal breeds) to form a crossbred sire and crossed two specialized dam lines (maternal) to form a crossbred dam...