AI SWINE IN NICARAGUA

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Artificial Insemination in Swine: 

Artificial Insemination in Swine B. Olcott DVM,MS,MBA Winrock Nicaragua 2007

Advantages of Artificial Insemination: 

Advantages of Artificial Insemination

Comparative Cost Of AI: 

Comparative Cost Of AI

Artificial Insemination Kit: 

Artificial Insemination Kit

Be Ready!: 

Be Ready! Have insulated collection cup warm and clean until time to collect Extenders and other lab materials (slides) need to be pre-mixed and warmed to appropriate temperatures

Collecting Semen: 

Collecting Semen Place a sterile disposable bag inside the container.

Semen Straining: 

Semen Straining Place a double layer of sterile cheese cloth over the cup. Boil the cloth between collections. Secure with rubber bands.

Collecting Semen: 

Collecting Semen Warming cabinets keep all supplies at a uniform temperature of 35oC. Distilled water Slides Extender Glassware Stains

Collecting Semen: 

Collecting Semen Collection areas should be clean and quiet. Flooring should be non slippery. Escape hatches should be provided for personnel.

Collecting Semen: 

Collecting Semen Training boars Young boars will usually respond well to the collection dummy. Older boars are more difficult. Urine from sows in heat is a great aide.

Collecting Semen: 

Collecting Semen Familiarize the boar with contact on all parts of his body. Be patient.

Collecting Semen: 

Collecting Semen Let the boar explore his environment.

Collecting Semen: 

Collecting Semen Once a boar is trained collecting is a one person job. Grasp the tip of the boars penis firmly with poly vinyl NOT LATEX Gloves. Discard the first part of ejaculate which is the clear fraction.

Collecting Semen: 

Collecting Semen Collect the milky white sperm-rich portion. The final portion is the clear and gel fraction and not collected.

Collecting Semen: 

Collecting Semen There may be another sperm rich fraction than can be collected. Make sure the penis remains safe from damage from the dummy sow.

Collecting Semen: 

Collecting Semen Be patient. He will need to finish to avoid frustration. He may take 5-15 minutes Avoid pressure on the shaft, this may distract him and make him stop. Keep pressure applied to tip only!

Collecting Semen: 

Collecting Semen Remove the filter and discard. The semen should be extended within 15 minutes of collection. Keep the sample away from cool temperatures and light!!

Semen Evaluation: 

Semen Evaluation Weigh the semen first. Record the volume collected. Evaluate color, thickness, and smell.

Semen Motility Evaluation: 

Semen Motility Evaluation Estimate motility within 10-15 minutes of collection. Slides and cover slips warmed to 35oC Extender warmed to 33oC Add 9.5 mls of extender to 0.5 mls of semen. (1:19 dilution). Place 2 drops on a warm slide and cover with warm cover slip. Examine at 400x.

Sperm Morphology: 

Sperm Morphology

Semen Morphology: 

Morphology Stain Trypan Blue Eosin/Nigrosin solution 7 drops stain to 3 drops semen Must be warm or false readings!! Let sit for 5 minutes in water bath before reading. Semen Morphology

Extending Semen: 

Extending Semen Dose = 3-4 x 109 Hemocytometer Spectrophotometer Estimate Skim milk: 1:4 Milk: 1:7 Cream: 1:10

Sperm Concentration: 

Sperm Concentration Estimate by appearance Hand count with hemocytometer Electronic count with photometer Minimum of 2 x 109 viable sperm in one dose (70 ml) Maximum of 4.5 x 109 viable sperm in one dose (70 ml)

Hemocytometer: 

Hemocytometer

Hemocytometer: 

Hemocytometer

Extenders: 

Extenders What do extenders do? Dilute semen Provide buffers Provide nutrients Provide antibacterials to prevent infection

Extenders: 

Extenders Long term extenders: Shelf life of 5-7 days Difficult to prepare Expensive Short term extenders: Shelf life of 3 days Inexpensive Easy to make

Guidelines to Extending Semen: (Amount of extender to add): 

Guidelines to Extending Semen: (Amount of extender to add)

Extending Semen: 

Extending Semen

Adding Extender to Semen: 

Adding Extender to Semen

Extending Semen by Eye: 

Extending Semen by Eye

Records: 

Records Label EACH dose with boar ID, date, concentration, etc.

Storing Semen: 

Storing Semen Always store semen between 15-20oC. Cool warm semen over a period of 2-3 hours. Never store semen in a refrigerator (2o-8oC). Never store semen at a temperature greater than 20oC. Invert (roll) doses 2x daily during storage.

Inseminating the Sow: 

Inseminating the Sow

Artificial InseminationSpirettes: 

Artificial Insemination Spirettes

Insemination : 

Insemination

AI Catheter Placement: 

AI Catheter Placement

Artificial Insemination: 

Artificial Insemination Spirette is inserted at an angle of 30o. This will prevent catheterization of the bladder. Spirette should advance easily to the cervix. A hymen may be present in gilts.

Artificial Insemination: 

Artificial Insemination Rotate the spirette counterclockwise! This will lock it in place in the cervix. Turn the spirette until it won’t turn any more.

Artificial Insemination: 

Artificial Insemination Spirette locked in place

Artificial Insemination: 

Artificial Insemination Back pack set Sows in heat with proper stimulation will draw semen from the vial intra uterinely. Once semen is drawn in, leave catheter in place for 2 minutes to minimize back flow.