Artificial insemination , or AI , is a very popular method acting of cover swine . Most everyone use this method these day , as it ’s gentle and price - good . A hobby farmer can purchase seminal fluid from a boar stud poker for $ 25 and up , so the financial investiture is minimum if you are n’t too special about the breed or boar . you may feel boar studs across the country , and owner promote their animals in catalogue , in swine publication and through porc producers associations .
AI is easy for a secular to do ; you do n’t necessarily necessitate a veterinarian , though it ’s always good to see it done first before you try it yourself . Your county extension broker or pork producers connexion appendage might be able to tie you to someone with AI experience .
The most vital aspect to successful AI is detecting when the sow is in stand estrus , or in high temperature , which means she ’s ready to be engender . The sow ’s median estrus bike is 21 day but can lay out from 18 to 23 Clarence Day . Most bull stock breeder will have a teaser boar or a bottle of pheromones to help observe when their sows are in brook estrus .
If you do n’t have these at your garbage disposal , the signs are easy to detect . When a sow is in standing estrus , she will have a different attitude and present different behaviors . A good test for standing estrus is the response to back pressing . If you press on the centre of the sow ’s back and she run aside from you , she ’s not quick . If the pressure level get her to stand tilt self-coloured with ears percolate up , she ’s in standing estrus . gynecologic signs include a self-conceited vulva that ’s often red in color and stringy mucus discharge from the vulva . If you could stretch this mucus between your thumb and index finger a good 1/2 in , she ’s ready . The sow will remain in heat for the next 36 to 72 60 minutes .
Once you detect stand up estrus , connect with the stud owner and ask for cum to be ship . Prepare in progress for this , because if you want a specific boar , you may have to call for the semen months in advance . If you ’re not exceptional , you ’ll have more immediate pick .
The cum will arrive in vials or bags in a temperature - controlled box at 58 to 60 stage F. There will be 2.5 million to 3.5 million sperm , thin in semen extender , in each bag . You commonly multiply a sow twice while she ’s in standing rut , so order two bags .
The semen is inserted into the neck with a disposable insemination rod . Ask the macho-man proprietor if these are included with the semen order . Insert the rod , angling slightly up , through the vagina until you feel resistivity , which means you ’ve gain the cervix . If you have a spirette - type retinal rod , call on it counter - clockwise until it bushel into the cervix . Turn it clockwise as you remove it . If you have a foam - tipped retinal rod , advertise firmly until the tip is locked into the uterine cervix . Pull it down gently to remove it . Insert the second bag 24 hours by and by .
If the sow does n’t come back into standing estrus 21 days later , she ’s in all likelihood significant . Your veterinarian can perform an ultrasonography 24 twenty-four hours from breeding to make certain . The normal gestation period for a sow is 116 days ( three month , three weeks and three days ) , and she ’ll have six to 14 piglets .
— Thomas G. Gillespie , DVM , Diplomate , ABVP , Swine Health Management Specialty of Rensselaer Swine Services in Rensselaer , Ind. ; 2010 American Association of Swine Veterinarians Swine Practitioner of the yr
