A mature bull will typically mate with 30 to 50 cows per season, whereas with a yearling bull, 10 to 25 cows or heifers is sufficient.
Bulls that are rated as sound for breeding and have a testicle circumference of 360mm or better, can be mated to 40 cows or more, and get 95% or more in calf over a 9-week mating period.
A female calf is sometimes called a heifer calf and a male a bull calf. A heifer is a female that has not had any offspring. The term usually refers to immature females; after giving birth to her first calf, however, a heifer becomes…
Torgerson-White explains that most cows—approximately 92 percent—bred for the U.S. meat industry are “naturally serviced.” This term, also called natural service synchronization, uses herd bulls to impregnate cows and heifers “naturally” rather than through artificial insemination (AI).
Usually a bull will mate with a cow once, but it's not uncommon if it's done several times, especially if she has garnered the attention of more than one.
To achieve the ideal calving distribution, the guidelines for the length of mating are: maximum 60 days for bulls run with cows. minimum 45 days for bulls run with cows (if bulls are not run with the cows for long enough, the calving percentage is decreased).
Bulls frequently display male-male mounts, with consequences in the incidence of injuries, and possibly affecting the reproductive performance of the bulls.
Electroejaculation is an effective means for collecting semen for breeding soundness evaluation or artificial insemination, but is considered painful for the bull (Palmer, 2005; but see Whitlock et al., 2012).
You can have father-daughter matings in beef cattle, but it is not recommended. This type of breeding practice is called inbreeding or close breeding. Again, this breeding practice is rarely practiced today, although it was common in the foundation animals of most breeds.
A common question is “can my bull effectively breed each cow or heifer when everyone comes into heat at once?”. The answer is yes. Bulls should have experience, about 3+ years, have a BCS of at least 6, and have a scrotal circumference of at least 34cm. The bull should have also been through a breeding soundness exam.
Seahorses and their close relatives, sea dragons, are the only species in which the male gets pregnant and gives birth. Male seahorses and sea dragons get pregnant and bear young—a unique adaptation in the animal kingdom. Seahorses are members of the pipefish family.
Based on a 283 day Gestation Period.
The female counterpart to a bull is a cow, while a male of the species that has been castrated is a steer, ox, or bullock, although in North America, this last term refers to a young bull.
Bull Breeding
that a mature bull can service 25 to 35 cows; however it has been shown that highly fertile bulls can service up to 50 cows.
Mounting behavior is commonly recognized as a sexual behavior that is performed by cattle to identify female cattle in estrus and possibly attract a bull for breeding.
The sale also set a new all-breeds Australian record for sale average price, at $34,220. Theresult easily broke the previous Angus bull record of $225,000 set in July 2021 by Texas Iceman R725, sold by the Mayne family, Texas Angus, Warialda NSW.
Two Breeding Seasons per Year:
With two breeding seasons per year, bulls have a shorter time to replenish their weight loss before the next breeding season. Young bulls may need to gain 2 to 2 ½ pounds per day to recover from weight loss.
Bulls, much like cows, can live ten to twelve years. Most bulls will remain active in the herd for closer to four or five years due to feet and leg, structural, and fertility problems, temperament concerns, or injuries. The decision to cull many bulls happens in the spring after failing a breeding soundness exam.
There is no such thing as a totally safe bull, but the risk of an attack can be reduced with proper management. When dairy calves are six to eight weeks old, they should be put in group pens. If there are no bull calves available for pen mates, a young bull should be raised with steer calves that are older and heavier.
For healthy sperm production the testicles must be a few degrees below body temperature. A bull lowers his testicles in hot weather, and draws them up closer to the body in cold weather to keep them warm.
This measurement will usually be reported as the "actual SC." Benchmarks have been established for a minimum SC of 30 cm for bulls that are 15 months of age or less, 31 cm for bulls that are 15- 18 months of age, 32 cm for 18-21 months, 33 cm for 21-24 and all bulls over 24 months should have at least 34 cm.
Young bulls can ejaculate 10 to 20 billion sperm per week, and mature bulls should ejaculate 40 to 60 billion sperm per week.
Like the camel, the Brahman stores food and water in the odd- looking hump on its back. The hump is a deposit of fat. Farmers and ranchers in the southeastern US and the Gulf States like to raise Brahman cattle because they can stand the heat, and insects don't bother them much.
Whether you call it humping, mounting or thrusting, the behavior is natural in male and female dogs. For some dogs, it is a response to arousal. For others, it can just be a way to exert dominance and show that they're the top dog in the house.