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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 bull
- Leg/spinal/hoof injury, making the bull be unable to mount and breed cows and heifers successfully
- Intense competition from other bulls, giving them no chance to settle any cows or heifers of their own
- Bull is too young to be breeding cows/heifers
- Competition between bulls of same age, size, breed, status induces more fighting than breeding.
- Illness or disease can cause a bull to become infertile
- Castration. A bull that is castrated will no longer be able to breed cows.
Other factors remain unsaid, but these are the most common.
What else can I help you with?
How young can a holestine bull calf breed?
A Holstein bull calf can be around 12 months of age to be able to breed.
When is a bull able to breed?
At about 10 months old.
Is a bull terrier classed as a small or medium size breed?
a bull terrier does have a relatively large genitalia so I would assume the breed would be medium size
What is the best determined dog breed?
To me it would have to be the doberman or the bull terrier.
When was The Bull Dog Breed created?
The Bull Dog Breed was created in 1930-02.
Is the bitish bull dog dead?
That breed is alive and breeding. The only bull breed extincted is the Cuban pit bull.
What is a cork screw bull?
A cork-screw bull is a bull with a cork-screw penis. A bull with this defect cannot breed females because the penis is not straight enough to be able to enter a cow's or heifer's vagina to breed her. The penis is, in a way, bent, but it is more shaped like a cork-screw than anything.
Bull mastiff is a breed of what?
It is a breed of dog.
What was the bull's name in The Rare Breed?
The bull's name in the movie "The Rare Breed" was Vindicator.
How many cows can a 20 month old bull expect to breed in a season?
A 20 month-old bull should be able to breed around 10 to 30 cows in a breeding season. The most may be 40, but that could be pushing it.
How did English bull dogs get there name?
English bull dogs were originally breed for an anchient sport where people would tie up a bear of "Bull", and sick dogs on it.
What is the meanest breed of bull?
Actually, the bull breeds are not mean, but the dog is the mirror of the owner. Take a look at the dog and you would know the owner.
