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15 Cards in this Set
- Front
- Back
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Viviparity
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live birth
born mature true placenta |
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Normal life of CL
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17-21 days
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Primitive CL
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Kangaroo
Possum Lifespan of Cl is same in cycling vs. pregnant length of gestation is equal to length of estrus cycle |
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maternal recognition of pregnancy
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occurs about 12 days after mating
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Sow gestation period
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114 d
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Sheep gestation period
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150 d
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Cattle gestation period
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283 d
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Mare
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336 d
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Purpose of Reproduction
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Perpetuate the Species
Provide Food -Surplus Animals Genetic Improvement |
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Repro Tools
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AI
Frozen Semen Sorting X and Y sperm Superovulation Embryo transfer Storing embryos In Vitro |
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DeGraaf
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Graafian follicles
1672 |
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Berthold
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Endocrinology 1849
Rooster experiment -ablation -replacement |
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Smith
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1926
Hypophysectomy |
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Cole and Hart
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1930
PMSG-Pregnant Mare Serum Gonadatropin |
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Hypophysectomy
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Removal of entire Pituitary gland
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