The average should be around 45 to 60 days at the least.
If you have Red Angus cows, put a Charolais bull in with them and you'll more than likely get some nice yellow calves. Beware though, you may experience calving issues in your herd if you aren't careful about selecting for calving ease and birth weight in the Charolais bull of choice!
Birthing, or calving.
Yes, many Charolais are horned. Historically, all Charolais were horned. However, in today's world, there are more Charolais cattle that are polled, which is a term for being hornless.
Charolais originated in Charolles, France.
EPD's in Charolais bulls are numbers that tell of what genetics and characteristics that bull can pass on to his offspring. EPDs are based on a breed average when compared to other bulls of the same breed raised on the same feed in the same environment that are of the same age. Average is 0, whereas any number that is above average is a positive (+) number and any number that is below average is a negative (-) number. For instance, a Charolais bull (Bull A) that is considered to have good calving ease for his breeding and according to his birthweight, should have a negative value in the birthweight value and a positive value for calving ease. A Charolais bull (Bull B) that has good growth and high carcass characteristics should have a plus sign for weaning and yearling weights and carcass characteristics (marbling, rib-eye area, etc.). Bull A (one with good calving ease) is most likely to sire calves that are small at birthweight and easy for Charolais heifers to calve out. Bull B, on the other hand, will often be the opposite of Bull A because of the high weaning weights and excellent growth. Bull A is considered a maternal bull (siring calves best for raising for breeding), whereas Bull B is considered a terminal bull (sires calves intended for slaughter only). Note: EPDs are not to be compared with other breeds, since the average for each breed is different. See the related link below for more information on EPDs.
Charolais originated from Charolles, France. The first Charolais cow was shipped from Mexico to the US in 1934. In the late 40's early 50's breeder established the American Charolais breeders association. In 1957 the American and International association merged in the American International Charolais Association (ACIA).
The average lifespan of a charolais cow is around 15 years.
A cow that is very close to calving or which calving is imminent.
Calving or parturition.
Charolais, breed of large light-coloured cattle developed in France for draft purposes but now kept for beef production and used for crossbreeding. White cattle had long been characteristic of the Charolais region; recognition of the Charolais breed began about 1775. A typical Charolais is massive and horned and cream-coloured or slightly darker
Charolais are of the species Bos primigenius taurus. The related question below will answer the rest for you.