Pig artificial vagina is applied in swine artificial insemination semen collection. 
It compared with traditional hand semen collection method, this artificial vagina has advantages as below: 
    1)  Health and Safety, can effectively prevent bacterial infection to the boar.
    2)  Convenient and efficient, there is no need to manual stimulation the boar. 
    3)  Flexible and friction net of inwall can stimulate the swine ejaculation naturally.

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