Animal / Dairy Science 434
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Transcript of Animal / Dairy Science 434
![Page 1: Animal / Dairy Science 434](https://reader035.fdocuments.in/reader035/viewer/2022062717/56812b2c550346895d8f39f2/html5/thumbnails/1.jpg)
Animal / Dairy Science 434Animal / Dairy Science 434Comparative Male AnatomyComparative Male Anatomy
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TestisSpecies Testis Wt. % Of Orientation
(grams) Body Wt.
bull 300+ .03 vertical
ram 250 .3 vertical
boar 350 .2 oblique
stallion 200 .03 horizontal
dog 25 .2 oblique
rabbit 2.5 .1 vertical
human 25 .03 vertical
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Reproductive Organs of the
Bull
Cowpers Gland
Caput Epididymis
Cauda EpididymisTestis
Scrotum
GlansPenis
Bladder
Ampulla
Seminal Vesicles
ProstateRectum
Vas Deferens
Gubernaculum
SigmoidFlexure
Retractor Penis
Muscle
Prepuce
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Reproductive Organs of the
Bull
Vertical
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Ram
Vertical
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Boar
Oblique
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Dog
Oblique
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Stallion
Horizontal
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HumanVertical
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Testis Orientation
Tail Head
Bull
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TestisSpecies Testis Wt. % Of Orientation
(grams) Body Wt.
bull 300+ .03 vertical
ram 250 .3 vertical
boar 350 .2 oblique
stallion 200 .03 horizontal
dog 25 .2 oblique
rabbit 2.5 .1 vertical
human 25 .03 vertical
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Ram
No Body of the Prostate
Ampulla
SeminalVesicles
Prostate
BulbospongiosusMuscle
Cowper’s
Gland
Bladder
Vas Defere
ns
Pelvic Urethral Muscle
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No AmpullaLarge Cowper’s
SeminalVesicles
BulbospongiosusMuscle
Cowper’s Gland
Vas Deferens
Pelvic Urethral Muscle
Prostate
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No DisseminateProstate
SeminalVesicles
BulbospongiosusMuscle
Cowper’s Gland
Vas Deferens Pelvic Urethral Muscle
Prostate
Ampulla
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Human
No DisseminateProstate
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Dog Pelvic Tract
Prostate
Vas Defere
ns
Bladder
Pelvic Urethral Muscle
BulbospongiosusMuscle
No Seminal Vesicles or Disseminate Prostate
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Cat (Tom) Reproductive Tract
ProstateCowper’s Gland
Glans Penis
Corpus Cavernosum
Crus Penis
Vas Deferens
AmpullaNo Seminal Vesicles or Disseminate Prostate
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Cat (Tom) Reproductive
Tract
Note how close the cowper’s gland is to the penis in the cat.
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Cat Glans Penis
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Feline Anatomy: Erection and
Mating
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Accessory GlandsSpecies Seminal Prostate Cowper's
Vesicles body disseminate
bull ++ + + +
ram + - + ++
boar +++ + + +++
stallion +++ ++ - (+) +
dog - ++ - -
Cat - ++ - ++
human + ++ - +
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Accessory Gland SecretionsSpecies Seminal
VesiclesProstate
Body+ DisseminateCowper’s
bull 30 6ram 8 6boar 30 40 30
stallion 30dog 70
human 70 25
GelGel
Clot Clot Enzyme
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Penis TypesMuscular-Vascular Fibroelastic
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Human Penis Cross Section
Corpus Cavernosum
Corpus SpongiosumUrethra
Blood Vessels
Large Veins
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InternalPrepuce Raphe
UrethralProcess
Free End of Penis GlansPenis
FiliformAppendage
Bull
Ram
Boar
Stallion
Human
Cat
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Comparison of Penis Types
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Human
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Sigmoid Flexure
Bull
Boar
Fibroelastic Penis
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Muscular-Vascular
Penis Type
Stallion
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The Penis
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Erection and Ejaculation Characteristics
Species Speed of Ejaculate Semen Sperm SpermErection Time Volume Conc. Number
bull rapid short medium medium- mediumhigh
ram rapid short small high medium
boar rapid long large low high
stallion slow moderate large low medium
dog slow long large low low
human slow moderate medium low low
Large Testes = high sperm numbersLarge accessory glands = large volume of the ejaculate with lower concentration of sperm
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»Support spermatogenesis
»Testosterone synthesis
PrimarySpermatocyte
Sertoli Cells
Leydig Cells
Capillary
BasementMembrane
Spermatids
Round Spermatids
SecondarySpermatocyte
Myoid Cells
SeminiferousTubule
SeminiferousTubule
Spermatogonium
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Seminiferous Tubules
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Seminiferous Tubule
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Sertoli CellSertoli Cell
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Leydig Cell
Capillary
Interstitial Tissue (space)
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Capillary
LeydigCells
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Basal CellPrincipal Cell Stereo-Cillia
Epididymis
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Cauda Epididymis near Vas Deferens
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Vas Deferens
Smooth Muscle
Sperm
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