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1/17
Good Morning Farmers.
Today we will talk a bit about the uterus & the ovaries.
@gospelmatondi @Makera_Cattle @babatafi @xandatoto @basera_john @AylesTech @DVSZim @BrahmanMasilo @retweet263 @iMisred @MusikaZimbabwe @JohnMuchenje4 @MukuvariKaroi @CynthiaTapera
Good Morning Farmers.
Today we will talk a bit about the uterus & the ovaries.
@gospelmatondi @Makera_Cattle @babatafi @xandatoto @basera_john @AylesTech @DVSZim @BrahmanMasilo @retweet263 @iMisred @MusikaZimbabwe @JohnMuchenje4 @MukuvariKaroi @CynthiaTapera
2/17
The uterus is the structure immediately after cervix.
It branches off into 2 horns ; which are termed the Right Horn of the uterus & the Left Horn of the uterus.
The uterus is the structure immediately after cervix.
It branches off into 2 horns ; which are termed the Right Horn of the uterus & the Left Horn of the uterus.
3/17
The dividing line between the 2 horns of the uterus is called the Septum & one has to watch out that they don't push the lnsemination pipette/syringe beyond 1cm after the 3rd ring of the Cervix because the lnseminator doesn't know which ovary is releasing the oocyte or egg.
The dividing line between the 2 horns of the uterus is called the Septum & one has to watch out that they don't push the lnsemination pipette/syringe beyond 1cm after the 3rd ring of the Cervix because the lnseminator doesn't know which ovary is releasing the oocyte or egg.
4/17
At the end of each uterine horn is a valve called the lsthmus which opens up to the Fallopian tube or Oviduct.
The lsthmus only opens up when an egg is raptured to allow for semen to move up the Oviduct for fertilisation.
At the end of each uterine horn is a valve called the lsthmus which opens up to the Fallopian tube or Oviduct.
The lsthmus only opens up when an egg is raptured to allow for semen to move up the Oviduct for fertilisation.
5/17
The Fallopian tube or Oviduct is connected to the ovary where thousands of follicles ( eggs) or ova have the potential to grow & ripen & get released every 21-24 days which gives the cow's cycle.
The Fallopian tube or Oviduct is connected to the ovary where thousands of follicles ( eggs) or ova have the potential to grow & ripen & get released every 21-24 days which gives the cow's cycle.
6/17
Depending on the animal's cycle, the ovary may have an actively growing follicle/egg if she's not pregnant. In case of pregnancy there will be an actively growing corpus luteum to support the pregnancy.
Depending on the animal's cycle, the ovary may have an actively growing follicle/egg if she's not pregnant. In case of pregnancy there will be an actively growing corpus luteum to support the pregnancy.
7/17
The ovary produces hormones which directly control the animal's status within the 21 day cycle. The ovaries work together with the pituitary gland which is found at the base of the brain on the hypothalamus
The ovary produces hormones which directly control the animal's status within the 21 day cycle. The ovaries work together with the pituitary gland which is found at the base of the brain on the hypothalamus
8/17
Diestrous Phase
If the cow is healthy, with a good body condition score & is not exposed 2 too many stress factors & is not pregnant, her uterus will produce the hormone Prostaglandin (F2a) which cancels the activity of Progesterone (P4), the hormone which supports pregnancy
Diestrous Phase
If the cow is healthy, with a good body condition score & is not exposed 2 too many stress factors & is not pregnant, her uterus will produce the hormone Prostaglandin (F2a) which cancels the activity of Progesterone (P4), the hormone which supports pregnancy
9/17
The progesterone hormone is produced by the corpus luteum (Yellow Body) on the ovary. Once the corpus luteum starts to regress & the progesterone hormone levels go down, the Hypothalamus releases Gonadotrophin Releasing Hormone (GnRH)................
The progesterone hormone is produced by the corpus luteum (Yellow Body) on the ovary. Once the corpus luteum starts to regress & the progesterone hormone levels go down, the Hypothalamus releases Gonadotrophin Releasing Hormone (GnRH)................
10/17
.....which activates the Pituitary Gland to release Follicle Stimulating Hormone (FSH). This FSH is sent to the ovaries then a follicle or egg starts growing on the ovary. The Pituitary Gland also produces Luteinizing Hormone (LH).....
.....which activates the Pituitary Gland to release Follicle Stimulating Hormone (FSH). This FSH is sent to the ovaries then a follicle or egg starts growing on the ovary. The Pituitary Gland also produces Luteinizing Hormone (LH).....
11/17
...which encourages the rupture of the ripened follicle. If the animal fails to produce enough Luteinizing Hormone, the ovary may fail to release the egg; this will result in a cystic follicle on the cow's ovary.
...which encourages the rupture of the ripened follicle. If the animal fails to produce enough Luteinizing Hormone, the ovary may fail to release the egg; this will result in a cystic follicle on the cow's ovary.
12/17
These cysts mostly occur on animals exposed to poor nutrition,infections or synthetic hormone treatments in heat-sychronized programs. The Graafian Follicle on the cow's ovary releases the Oestrogen Hormone which is responsible for the change in the....
These cysts mostly occur on animals exposed to poor nutrition,infections or synthetic hormone treatments in heat-sychronized programs. The Graafian Follicle on the cow's ovary releases the Oestrogen Hormone which is responsible for the change in the....
13/17
....cow's behavior when it goes into Heat/Oestrus. A cow on heat starts showing interest in males because the oestrogen hormone affects the central nervous system of the cow as it is sent to the brain. It takes about 36 hrs from when....
....cow's behavior when it goes into Heat/Oestrus. A cow on heat starts showing interest in males because the oestrogen hormone affects the central nervous system of the cow as it is sent to the brain. It takes about 36 hrs from when....
14/17
....the follicle is fully grown to ovulation or rupture into the Fallopian tubes. This is the "Heat-Period" of the cow. At the very place where the ovum ruptured, a corpus luteum (yellow body) starts growing through the action of Luteinizing Hormone.
....the follicle is fully grown to ovulation or rupture into the Fallopian tubes. This is the "Heat-Period" of the cow. At the very place where the ovum ruptured, a corpus luteum (yellow body) starts growing through the action of Luteinizing Hormone.
15/17
This corpus luteum produces the hormone progesterone which maintains pregnancy if the cow was inseminated & did actually conceive.
If she did not conceive, the uterus will produce prostaglandin hormone around day 12 of the cycle.
This corpus luteum produces the hormone progesterone which maintains pregnancy if the cow was inseminated & did actually conceive.
If she did not conceive, the uterus will produce prostaglandin hormone around day 12 of the cycle.
16/17
This Prostaglandin will cancel the action of the Progesterone then the Corpus Luteum regresses and the 21 day cycle starts again; developing to Day 1 as the Graafian Follicle ruptures
This Prostaglandin will cancel the action of the Progesterone then the Corpus Luteum regresses and the 21 day cycle starts again; developing to Day 1 as the Graafian Follicle ruptures
17/17
Thank you so much for going through this long thread but we hope that it will benefit someone out there to have full understanding of your herd.
#ZimFarmersCan
#Cattle
Thank you so much for going through this long thread but we hope that it will benefit someone out there to have full understanding of your herd.
#ZimFarmersCan
#Cattle
