REPRODUCTION PHYSIOLOGY OF
CATTLE
Principle of Reproduction
decreasing reproduction
efficiency
increasing efficiency of the
production
Female
Tubula Genitalia
Oviducts
Uterus
Cervix
Vagina
Vulva
Supporting tissue
Ovaries
Male
Testes
Functional Morphology Scrotum and Spermatic Cord
Temperature control Epididymis
Transport Concentration
Storage Maturation
Epididymis
Function Morphology
•covered with the tunica vaginalis,a serous tissue•The outer layer of the testes,the tunica albuginea testis•contains germcells(spermatogonia) and nursa cells (Sertolicells)•Leydig (interstitial) cells are found in the parenchyma of the testes between the seminiferous tubules
Temperature Control
•Higher temperature causes degeneration of the cells lining the wall of the seminiferous tubules•In cattle ambient temperaturesrange from 5o
21o,the temperature inside the testes will be about 4o below body temperature(38.6o)•The role of the scrotum and spermatic cord in temperature control of the testes involved drawing•Actual cooling of testes occurs by two mechanisms
Accessory Glands • located along the
pelvic portion of the urethra
• contribute to the fluid volume of semen
• assure optium motility and fertility of semen
Vesicular Glands• a pair of lobular
glands• appearance of a
"cluster of grapes."• Unique organic
compounds
Prostate Gland • single gland located
around and along the urethra, posterior to the excretory ducts of the vesicular glands
• small contribution to the fluid volume of semen
Bulbourethral Glands• located along the
urethra near the point where it exits from the pelvis
• contribute very little to the fluid volume of semen
• prevent semen from flowing bak
Glans Penis
Bull Boar
Ram Stallion
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