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Cards In This Set
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Scrotum
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Tunica dartos muscle will contract when temperature falls
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Cremaster muscle
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Temperature falls and muscle contacts
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Pampiniform plexus
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Complex network of blood vessles that cool the blood entering the body
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Epididymis
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Functions: transports sperm, storage of sperm, maturation of sperm, concentration of sperm
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Oxytocin
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Induces milk letdown
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Estrogen
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Steroid responsible for sexual behavior during estrus, responsible for secondary sex characteristics at time of puberty, relaxes cervix and increased uterine motility during estrus, elevates secretory activity of entire reproductive tract
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Progesterone
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Maintains pregnancy
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Testosterone is released by what cells?
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Leydig
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Advantages of AI
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Genetic improvment using superior sires, disease control, improve record keeping, eliminated need for bulls on farms, more economical than regular service
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Disadvantages of AI
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Time required for estrous detection, trained personell required, overuse of inferior sires
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Retrocervical AI is used in
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Cattle
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Speculum AI is used in
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Sheep and goats
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Cervical AI is used in
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Swine
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Vaginocervical AI is used in
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Horses
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Where does the US rank in terms of swine production?
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Second
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