Puberty And Estrous cycle Flashcards
They must go through a process of sexual maturation before they are capable of producing offspring.
Animals
This is the stage of sexual maturation.
Puberty
In _______ , puberty is marked by a desire to mate and the ability to produce sperm capable of fertilizing an egg.
Males
This gender’s puberty involves the production of ova by the follicles, the development of the reproductive tract to give the animal the capacity to bear offspring.
Female
They are capable of breeding at any time after reaching puberty.
Male animals (mammals)
They are receptive to breeding ONLY during specific periods, called estrus, or heat.
female mammals
Their puberty ranges between six and twelve months of age
Heifer (batang cattle)
Their puberty ranges between four to eight months
Swine
They becomes sexually mature between five and nine months of age.
Ewe lamb
They reach puberty at ten to twelve months.
Horse
Their puberty starts any time from six to twelve months of age but varies/depends on their breed
Dog
They usually reach puberty at five to eight months
Rabbit
They become sexually mature at 17 to 26 weeks of age.
Chickens
They become sexually mature later, at 27 to 30 weeks.
Turkeys
This is the period during which the female will accept the male for mating.
Estrous or heat
Each interval is called an __________
estrous cycles
three phases of estrous cycle
proestrus, estrus, and diestrus.
During these phase a follicle matures to release the egg.
the proestrus phase
During this phase the female is sexually receptive to the male for mating.
Estrus
During this phase the reproductive tract becomes less active, until the cycle begins again with prostrus.
Diestrus
animal that has only one estrus in a breeding season or year.
Monoestrus
This animal is monoestrus
Since they are monoestrus, they do not have They average one cycle every seven months.
Dogs
They have more than once a breeding season or year
Polyestrous
Give some examples of polyestrous animals
Cattle, swine, sheep, horses, rabbits
They cycles only during the fall.
Ewe
The time when the ewe is not cycling is called ______
Anestrus
The mare usually experiences anestrus in the winter and cycles from around _____
March until October/November.
Decreasing daylight triggers FSH production in _______
Sheep
increasing daylight stimulates the production of FSH in _____
Horses
They have an average estrous cycle length of 21 days
cow, sow, and mare
This animal has an average estrous cycle length of 16 days
Sheep
They have an estrous cycle of 15 days
Rabbits
It is the window of opportunity for mating
Estrus
may mount other females or be willing to be mounted
They may be nervous or become agitated.
Cow
Another visual sign of estrus in a cow is _______
frequent urination or swollen, inflamed vulva
same visual signs as a cow when in estrus, they may occasionally grunt loudly. It may also immobile stance, holding its ears erect.
Sow
vulva may be slightly enlarged and secrete mucus. The best sign they are in heat is when they standing to be mounted
Ewe
They show sign estrous sign when they raised, tail and a relaxed vulva. Also
disturb others, be nervous, nicker, and urinate frequently.
Mare
They will exhibit changes in behavior when in heat. Like appetite may decrease or increase.
Bitch
Causes of Anestrus
Pregnancy
Pathology
Stress
Signs of Estrus in swine
Standing heat (Back pressure test)
Swelling of the vulva
Frequent urination
Signs of Estrus in sheep
when she accepts the ram and submit to
mounting/mating.
Swollen vulva, inflamed and pinkish in color
Signs of Estrus in goat
- Shaking of tail from side to side
- Bleating
- Mucous discharges from the vulva
Signs of Estrus in horse
- Raised tail
- Relaxation of the vulva
- Frequent urination
- Teasing of other mares
