Animal Reproduction/Theriogenology https://www.youtube.com/channel/UCHzZhYqMy10vsVRZdddEkUg

1. THER 608
Physiology of Reproduction
Prof. Dr. Nasim Ahmad
Spermatogenesis
Endocrinology of male
Chapter 10
1

2. Western College of Veterinary Medicine
U of Sask
Canada

4. Westgen Research Suite

5. Human Sperm
(Hartsoeker, 1694)

6. Mammalian Sperm
(Leeuwenhoek, 1679)
Rabbit sperm Dog sperm

11. Male Endocrinology

12. Male Endocrinology

13. Seminiferous Tubule: Histology
Spermatogonia
Sertoli cell
Junctional complex
Primary spermatocyte
Spermatids
Connective tissue
Leydig cell
Blood
vessel
Lymphatic
vessel
Adlumninal
compartment
Basal
compartment
Interstitial
compartment

23. Spermatozoa of Different Species

24. Sperm Morphology
Head
Middle
piece
Principal
piece
End
piece
Acrosome:
Hyaluronidase
Acrosin

25. Semen
• Sperm:
– Head - Nucleus, Acrosome, Post-nuclear
cap
– Tail - Middle piece, Principal piece, terminal
piece
• Seminal plasma:
– Secretions from accessory sex gland
– Functions - Vehicle and Nutrition

27. Semen Characteristics
Man Bull Ram Boar Stallion Cock
Volume
(ml)
1.5 –
5.0
5.0-8.0 0.8-1.2 150-300 60-100 0.2-0.5
Sperm
Conc.
(million/ml)
40-250 800-
2000
2000-
3000
200-300 150-300 3000-
7000
Motility
(%)
60-70 40-75 60-80 50-80 40-75 60-80
pH 7.2-7.8 6.4-7.8 5.9-7.3 7.3-7.8 7.2-7.8 7.2-7.6
Fructose
(mg/100 ml)
150-600 400-600 250 9 2 4