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Artificial Insemination A.I. Jenna Parnell Agricultural Leadership. What Is Artificial Insemination?. General definition -the introduction of semen into the oviduct or uterus by some means other than sexual intercourse.
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Artificial InseminationA.I. • Jenna Parnell • Agricultural Leadership
What Is Artificial Insemination? • General definition-the introduction of semen into the oviduct or uterus by some means other than sexual intercourse. • Ag definition- the use of semen from a genetically superior male to inseminate a female resulting in a genetically superior offspring.
Quick facts • 99% of female swine are artificially inseminated in the world • 50% farrow with 10 or more piglets per litter • Sexing sperm can be done in swine but a very slow process & not used often • Frozen sperm not used in the swine industry
Advantages • Genetic Improvement • Disease control • Cost effectiveness • Less stress on gilt/sow (can use larger boar on smaller gilts) • Safety • Reduce number of boars needed on farm • 15-20 doses per collection
Time Saving Tubbs, Rick. Swine Production Management. Helping clients implement an artificial insemination program.
Disadvantages • Human Error • Equipment needed • Time/Labor • Careful herd observation required • Cannot freeze semen due to decreased fertility • Higher level of management BUT better record keeping
Supplies needed • Collection: • Dummy • Space • Bottles/Caps • Extender • Thermometer • Distilled Water • Microscope • Storage • A.I. Pipettes/catheters • Synchronization
Collection information • Collection: • Every other day • 1-5 semen collections per week • 50-500 mL per collection • 150-750 (million/mL) sperm concentration • 15-20 doses per collection • Volume varies by breed, age, and collection frequency
Processing the semen • The semen is extended • Extender dilutes the semen so that it can be used for many females • Extender must be added when semen and extender is within 3 degrees of each other • Look at semen under the microscope • Bottle and store semen until needed or shipped
Storage of Semen • Storage Temperature 60-65 degrees Fahrenheit • Typically used within three-seven days from collection • Do not expose to sunlight • Temperature fluctuations shorten semen life • Rotate bottles 3-4 times daily
Heat Detection • Increased activity • Mounting • Swelling and redness of vulva • Discharge • Standing heat • Best indicator of estrus • *Takes time to catch in heat • Return to heat every 21 days
Breeding • Gilts- 12 hours after heat detection • Sows- 24 hours after heat detection • Typically use 2-3 doses per female (12 hour difference) • Re-check every 21 days for recycling