Yes. But it's ill advised because this is inbreeding and something that should be avoided if you have no history about the genetics of the bull and his daughters.
Heifers have smaller pelvic areas than mature cows do, so they need to be bred to a bull that has, genetically, low birth weights. Heifers are also best bred to yearling bulls(primarily 12 to 18 months of age), which are smaller than the bigger mature bulls and won't increase the chances of crippling the heifers when trying to mount them. Young and/or small bulls tend to have the genetics for siring smaller calves, and heifers have the body size that tend to develop small calves, however, in either case this does not always occur: Yearling bulls are primarily unproven bulls; small bulls may sire large calves; Breed of the yearling bull plays a part in low birthweight genetics; condition, feed and environment play a role in lowbirthweight rates in heifers and cows. Young bulls are not the best because 99% of the time they are unproven sires. In other words, they are virgin bulls, or have never mated with a cow or heifer and produced offspring. They are selected by the rancher because they are expected to produce low birthweight calves out of the heifers, only because the Expected Progeny Differences (EPDs) combined and calculated from the sire and dam, and compared with other bulls of the same breed and raised in the same conditions, says so. Smaller bulls also need to have the EPD numbers to be able to be used on heifers. If there are no papers that come with a small bull that you buy, you are making a big gamble on him. Even EPDs on yearlings are not reliable, especially if you have a 60% chance that that bull will sire large calves instead of small ones. Thus young unproven bulls may have high birth weights that should not be used on heifers; the same goes with smaller bulls. Breed also has a large affect on how the heifers calve out, and what size of calves the bull will sire. For instance, a yearling Simmental bull is put in with about 20 Red Angus heifers. Low birth weight EPDs for the Simmental breed is different from the low birthweight genetics of the Red Angus breed, so there's a higher chance that 10 or 15 of those Red Angus heifers will need assistance. Even using a Red Angus yearling bull that may have the numbers for low birth weights may not sire low birthweight calves in all of the heifers. But, primarily using a Continental bull that is of a breed that is notorious for large calves, like Simmental, Charolais, Maine Anjou and Belgian Blue, for instance, on your heifers, is asking for trouble. Small bulls like Dexters, White Park, Red Poll, etc. tend to sire small calves that are easy for your heifers to pop out. So heifer bulls are chosen through careful selection of genetics, size and breed, with the type of heifers in mind, in order to have a successful, worry-free calving season. If you know what to look for, you will have some happy heifers on your hands.
No. Heifers are female, bulls are male. Heifers cannot change their sex like some other creatures can. However, heifers that were born with a twin brother and shared the same placenta with her twin brother can develop bull-like characteristics. These are called Freemartins or Hermaphrodites. Hermaphrodites are 100% sterile, and a hermaphrodite heifer is a heifer that has both male and female sexual characteristics but can not fully become a bull like REAL bulls are.
Well the female gives off a smell telling the male ' im ready to do it ' ( make a baby ) and they do it. But if you ever see a bull with 2 calfs then yes it might do it again.
Puberty in cattle is the same for humans: it is the time when a heifer or bull begins to become more receptive to the possibility of conceiving offspring, due to the fact their reproductive organs start reaching maturity and their secondary sexual characteristics begin to develop. Sexual maturity is when the reproductive organs reach maturity enough that a heifer is old enough to conceive or a bull is old enough to start breeding heifers and cows. Age of puberty in cattle is highly dependent on the breed and how selective for fertility a producer is for his/her cow-calf herd. Heifers in herds that have high fertility have been known to start puberty as early as 4 or 5 months of age. Other herds or breeds may not see heifers beginning puberty until they're between 9 to 12 months of age. Brahman and zebu cattle may have heifers beginning puberty as late as 15 to 20 months of age. The latter breeds often don't see heifers being bred to calve until they're around 24 or 25 months old. The former often have a rule of thumb with having heifers not to be bred until they're 15 months of age. However, some breeders of the more highly fertile herds may find that they have no issues with breeding heifers a few months younger. Of course this is all down to the producer's discretion and management goals.
No, no dog does. There is no "locking mechanism" in any dog. Ever.
Heifers have smaller pelvic areas than mature cows do, so they need to be bred to a bull that has, genetically, low birth weights. Heifers are also best bred to yearling bulls(primarily 12 to 18 months of age), which are smaller than the bigger mature bulls and won't increase the chances of crippling the heifers when trying to mount them. Young and/or small bulls tend to have the genetics for siring smaller calves, and heifers have the body size that tend to develop small calves, however, in either case this does not always occur: Yearling bulls are primarily unproven bulls; small bulls may sire large calves; Breed of the yearling bull plays a part in low birthweight genetics; condition, feed and environment play a role in lowbirthweight rates in heifers and cows. Young bulls are not the best because 99% of the time they are unproven sires. In other words, they are virgin bulls, or have never mated with a cow or heifer and produced offspring. They are selected by the rancher because they are expected to produce low birthweight calves out of the heifers, only because the Expected Progeny Differences (EPDs) combined and calculated from the sire and dam, and compared with other bulls of the same breed and raised in the same conditions, says so. Smaller bulls also need to have the EPD numbers to be able to be used on heifers. If there are no papers that come with a small bull that you buy, you are making a big gamble on him. Even EPDs on yearlings are not reliable, especially if you have a 60% chance that that bull will sire large calves instead of small ones. Thus young unproven bulls may have high birth weights that should not be used on heifers; the same goes with smaller bulls. Breed also has a large affect on how the heifers calve out, and what size of calves the bull will sire. For instance, a yearling Simmental bull is put in with about 20 Red Angus heifers. Low birth weight EPDs for the Simmental breed is different from the low birthweight genetics of the Red Angus breed, so there's a higher chance that 10 or 15 of those Red Angus heifers will need assistance. Even using a Red Angus yearling bull that may have the numbers for low birth weights may not sire low birthweight calves in all of the heifers. But, primarily using a Continental bull that is of a breed that is notorious for large calves, like Simmental, Charolais, Maine Anjou and Belgian Blue, for instance, on your heifers, is asking for trouble. Small bulls like Dexters, White Park, Red Poll, etc. tend to sire small calves that are easy for your heifers to pop out. So heifer bulls are chosen through careful selection of genetics, size and breed, with the type of heifers in mind, in order to have a successful, worry-free calving season. If you know what to look for, you will have some happy heifers on your hands.
Heifers will hit puberty anywhere from 6 to 9 months of age--or older--depending on the breed. Heifers are ready to breed by the time they're 15 months old. Bulls will hit puberty around the same age, and are ready to breed at around 12 months of age.
No. Heifers are female, bulls are male. Heifers cannot change their sex like some other creatures can. However, heifers that were born with a twin brother and shared the same placenta with her twin brother can develop bull-like characteristics. These are called Freemartins or Hermaphrodites. Hermaphrodites are 100% sterile, and a hermaphrodite heifer is a heifer that has both male and female sexual characteristics but can not fully become a bull like REAL bulls are.
There are a lot more reasons than one may realize. A bull may be a "crypto" bull, or have his testes up close to his body (they haven't completely descended) causing the testes to have too high a temperature and unable to produce fertile sperm. He can breed, he just will be "shooting blanks." Other reasons are as follows:Injury to the penis (most common injury is a broken penis)Genetic condition causing the bull to be sterile, such as crooked or corkscrew penis, abnormal sperm, erectile dysfunction, etc.Malnutrition decreasing fertility of the bullLeg/spinal/hoof injury, making the bull be unable to mount and breed cows and heifers successfullyIntense competition from other bulls, giving them no chance to settle any cows or heifers of their ownBull is too young to be breeding cows/heifersCompetition between bulls of same age, size, breed, status induces more fighting than breeding.Illness or disease can cause a bull to become infertileCastration. A bull that is castrated will no longer be able to breed cows.Other factors remain unsaid, but these are the most common.
There's a 50% chance that a cow will give birth to a bull calf. Same with heifers. Therefore the ratio is 1:1 that a cow will be mother to a bull (bull calf) or a future cow (heifer calf)
There are a few dog breeds that can be put under the term 'pit bull': American pit bull terrier American staffordshire terrier Staffordshire bull terrier and there is a breed called Irish staffordshire bull terrier People argue that the APBT and the Amstaff are one and the same breed, but others argue that the bloodlines have been apart too long for them to be considered the same breed.
No. Heifers are bred the same ways other cows are, with natural service via a bull, or artificial service via artificial insemination. Only difference with natural service is that the bull must be young or small to prevent any potential back or leg injuries. Big mature bulls are very heavy, and a big mature bull mounting a small growing heifer can cause a train-wreck waiting for a place to happen.
Absolutely not! Angus is a breed, which encompasses not just steers, but also cows, bulls, heifers and calves of the same breed. The Angus breed are black polled cattle that originated from Scotland and is the breed that has gained huge popularity in the United States.
ASTs and APBT are not the same breed. People commonly lump them in together but they are not the same breed. The only dog breed that can be accurately called a Pit Bull is the American Pit Bull Terrier.
If any breed is crossed with a different breed, any characteristic of either breed can be present. A pit bull cross could look mostly like a pit bull, or could just as likely look mostly like the breed it was crossed with.
American staffys are considered the same breed as an American pit bull
The breed is The American Pit Bull Terrier. Some people shorten the breed's name but it is the same thing.