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REPRODUCTION & BREEDING (Factors involved in reproduction &…

- - - - Types
        
        Bipartile uteri: 2 smaller uterine horns with small uterine body & 1 cervix. Eg. Ruminants, cats & horses.
        
        Bicornuate Uteri: Upper part of uterus(long uterine horns) separated, lower part fused into single structure(1 cervix).Eg dog
        
        Duplex uteri: 2 cervices & 1 vagina. Eg. Rabbits & Rodents
        
        Simplex Uteri: No uterine horns. Eg. Primates & Humans
- - - - Impotency
        
        Physical damage
        
        Health & medication
        
        Psychological problem
        
        Causes:
    - - Development
        
        Descend into the scrotum during breeding season
        
        Bats, most rodents, some carnivores
        
        Descend into the scrotum during fetal @ early postnatal life
        
        Domestic mammals
        
        Mammals with abdominal testes
        
        Elephant, ant-eaters, whales, dolphin
      - Structure
        
        90% seminiferous tubules
        
        10% from connective tissue, blood vessels & Leydig cells
  - - - Leydig cells produce testosterone under LH stimulation
- - - - Reduce female body size/weight
      - Increase survival chance of fragile egg