Swine Production.ppt
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This document discusses swine reproduction. It begins by stating the objectives are to identify parts of the reproductive tract and describe the estrous cycle, estrus, and ovulation. It then provides details on the reproductive tract including ovaries, oviducts, uterine horns, cervix, vagina, and vulva. It describes the estrous cycle typically being 21 days and the signs of estrus being standing heat, red swollen vulva, increased activity and appetite changes. It concludes by stating the students will have a chance to artificially inseminate gilts in 4 days.
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Students be able to identify the various structures of the male reproductive systems and state their functions;
Students be able to identify the various structures of the female reproductive systems and state their functions
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Hormones from the pituitary gland also begin the production of eggs in females and sperm in males. Eggs and sperm transfer hereditary information from one generation to the next.
Reproduction is the process that continues life on Earth
Males and females each have structures specialized for their roles in reproduction.
Hormones are the key to how the human reproductive system functions,
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Hormones from the pituitary gland also begin the production of eggs in females and sperm in males. Eggs and sperm transfer hereditary information from one generation to the next.
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Reproductionsystem 131109102239-phpapp01
Students be able to identify the various structures of the male reproductive systems and state their functions;
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Males and females each have structures specialized for their roles in reproduction.
Hormones are the key to how the human reproductive system functions,
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Hormones from the pituitary gland also begin the production of eggs in females and sperm in males. Eggs and sperm transfer hereditary information from one generation to the next.
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Reproduction can occur through asexual or sexual means. Asexual reproduction involves one parent and produces offspring identical to the parent, while sexual reproduction involves two parents and produces offspring with genetic variation. The male reproductive system produces sperm in the testes which are transported through ducts. The female reproductive system produces eggs in the ovaries which pass to the uterus. Fertilization occurs when sperm and egg join together. In humans and most animals, reproduction occurs sexually through internal fertilization.
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Stage 1 (Menstruation): The lining of the uterus sheds and is expelled from the body. The ovaries do not release an egg.
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Students be able to identify the various structures of the male reproductive systems and state their functions;
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Reproduction is the process that continues life on Earth
Males and females each have structures specialized for their roles in reproduction.
Hormones are the key to how the human reproductive system functions,
Sex hormones are necessary for the development of sexual characteristics, such as breast development in females and facial hair growth in males.
Hormones from the pituitary gland also begin the production of eggs in females and sperm in males. Eggs and sperm transfer hereditary information from one generation to the next.
Reproduction is the process that continues life on Earth
Males and females each have structures specialized for their roles in reproduction.
Hormones are the key to how the human reproductive system functions,
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Hormones from the pituitary gland also begin the production of eggs in females and sperm in males. Eggs and sperm transfer hereditary information from one generation to the next.
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Students be able to identify the various structures of the male reproductive systems and state their functions;
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This document provides information on swine production. It discusses the objectives and terminology of swine farming, describes various pig breeds such as Berkshire and Yorkshire, and outlines management practices including feeding, farrowing, and processing piglets. Key topics covered include the social hierarchy of pigs, their behavior and intelligence, growth and reproductive development, and common diseases. The document concludes by outlining areas to evaluate pigs such as muscle, fat cover, soundness, and general appearance.
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Swine Production.ppt
- 2. What is the point? Why are we learning about swine reproduction? • We need to breed the gilts in the barn • We will be doing this by artificial insemination • We need to know what we are doing
- 3. Objectives Identify parts of the reproductive tract Describe Estrous cycle, Estrus, and Ovulation
- 4. I. Reproductive Tract Ovaries Infundibulum Oviduct Uterine horns Uterine body Cervix Vagina Vulva
- 5.
- 6. Ovaries Primary Structure Two Major Function: To produce ova, the female germ cells To produce the hormones progesterone and estrogen
- 8. Infundibulum Acts like a funnel to collect ova Diverts ova to the oviducts Oviducts 6 to 10 inches long Acts as site of fertilization
- 10. Uterine Horns 2 – 3 feet in a non-pregnant sow Act as a passage way for sperm Are the site of fetal development Uterine body is located at junction of the uterine horns
- 11. Cervix Muscular junction between the vagina and uteri Site of semen deposit It is dilated during heat (estrus) Constricted during pregnancy and when not in heat
- 13. Vagina Extends from the cervix to the vulva Passage way for urine and piglets The Bladder is connected to the vagina by the urethra
- 15. Vulva External part of the reproductive tract Becomes red and swollen just prior to estrus
- 17. 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.
- 18. II. Estrous cycle, Estrus, Ovulation
- 19. Estrous Cycle Normally 21 days long Can range from 18-24 days long Non-pregnant and non-lactating sows will estrus or standing heat
- 21. 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)
- 22. 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
- 24. Review How does Estrus cycle, estrus and ovulation relate? Which hormone is responsible for the estrus cycle? Estrogen
- 25. 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
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