Presentation on theme: "Swine Reproduction Rebecca Begoon 2/8/02. What is the point? Why are we learning about swine reproduction? We need to breed the gilts in the barn We will."— Presentation transcript:
Activity With a partner, you will put together a model of a gilt’s reproductive tract, just like the picture used during lecture, using play dough. The supplies will be located at the front of the room.
Estrus or Heat Follicles – 6 to 10 will form on each ovary – Growth begins 3 days before estrus FSH (Follicle Stimulating Hormone) released from the pituitary gland Maturing ovum is held in each follicle Estrogen is secreted (responsible for estrus) Ovulation is stimulated by LH (Luteinizing Hormone)
Signs of Estrus Standing Heat – standing to be mounted or “back pressure test” – Red, swollen vulva – Increased nervous activity – Desire to seek boar – Decrease in appetite – Vaginal mucous
Progesterone Is responsible for maintaining Pregnancy !
Review How does Estrus cycle, estrus and ovulation relate? Which hormone is responsible for the estrus cycle? – Estrogen
Review con’t Which hormone is responsible for maintaining pregnancy? – Progesterone What are the signs of estrus? Standing Heat – standing to be mounted or “back pressure test” – Red, swollen vulva – Increased nervous activity – Desire to seek boar – Decrease in appetite – Vaginal mucous
Reality!!! In four days the gilts will be in heat and you all will have a chance to Artificially inseminate one of the gilts. It is important to understand the reproductive tract and cycles. Tomorrow we will practice on a model of a gilt
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