Comments and insights on the name Armistead: | Edit. Armistead is considered a VERY preppy name. It is more commonly used as a middle name. It is rarely used as a first name. I know a Armistead, it was his mothers maiden name. Personal experiences with the name Armistead: | Edit Share what you know! Nicknames for Armistead: | Edit Share what you know! Meanings and history of the name Armistead: | Edit
However, all this depends on the breed and each individual bull. Some breeds that are later maturing (typically Continentals), like Charolais, Simmental, Limousin or Salers, won't start showing puberty until they're around 12 to 16 months of age.
The optimum age is 15 months or more. She should also be weighing at least 60% of the average weight of the main herd or the body weight of a mature cow that is comprised of similar breeding to her.She must also have good pelvic area and good capacity in her hips and barrel area before she can have a calf.eifers can be bred by the time they â¦ reach between 9 and 18 months of age, (preferably 15 months of age or older) and/or weigh 60% of the average mature cow-herd weight, since some heifers may not be able to be bred until they're ~20 months old, like with most Brahman heifers for instance.