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Artificial Insemination

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Presentation on theme: "Artificial Insemination"— Presentation transcript:

1 Artificial Insemination

2 History of Artificial Insemination
1322- Arab Chief stole semen from an arabian stallion belonging to another chief to breed his prized mare 1780- Successful AI of Dogs 1900’s – Livestock Became popular in cattle 1960’s & 70’s Sucessful in Cattle, Sheep, Goats, Swine, Horses, Dogs, Cats, Poultry, Lab Animals, Humans, and Insects.

3 Advantages of Using AI Maximize use of outstanding sires. Thus, enhancing the genetic value of the herd. Providing access to high quality sires at modest prices. Also, avoid price of ownership. Improve herd by selecting the best sire match for female. Records and genetic traits available Prevention of disease transmission(std’s)

4 Advantages Continued Shortening of the birthing season
Improved merchandising through the use of well publicized sires with known reputations. Increased safety – no aggressive males on farm (bull, stallion) “Life Insurance” for the sire, will still have offspring after he is deceased.

5 Disadvantages of Using AI
Requires skilled technician. More labor intensive, females must be watched to detect estrus. Must have special handling facilities. Training sires for collection Accentuates poor traits if a poor sire is selected May increase the spread of disease

6 Process of Artificial Insemination
Semen Collection Two methods Artificial vaginas electroejaculation Semen Processing, Storage and Handling Insemination

7 Semen Collection Male is trained to mount a teaser animal or dummy
Penis is directed into an artificial vagina that is temperature controlled to be the same temperature as the female. Ejaculation occurs

8 Frequency of collection
Bulls Twice a day – 2 days/week- frozen semen Three times a week otherwise Sheep Many times a day for several weeks Boars and Stallions Every other day If everyday is required for short period, let rest for 2-3 days between intensive collection.

9 Semen Processing Dillution Freezing Storage Liquid nitrogen tanks
Can be diluted so that more animals can be bred with one ejaculate Freezing Use liquid nitrogen at -320°F Storage Put into ampules or plastic straws. Liquid nitrogen tanks Horse and swine semen is generally not frozen

10 Insemination Estrus detection in female
Timing is important – sperm need to be injected into oviduct at ovulation Semen is thawed and placed in inseminating device. Technician inserts speculum into female reproductive tract into cervix Inseminating tube is inserted and sperm is deposited.

11 Technician is well trained to avoid damaging the reproductive tract of females.
Cleanliness and sterilization are very important to reduce disease transmission.

12 Procedures Cattle Sheep Swine Horse
Rectovaginal technique -Straw inseminating gun or pipet Sheep Speculum – straw inseminating gun or pipet Laparoscopic insemination (most common) Semen is deposited directly into the uterine horns by way of surgical procedure. Swine Cork screw pipet pipet is hooked to bottle containing semen Horse Vaginal method Straw inseminating gun or pipet

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