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heifer management - Coggle Diagram
heifer management
technique
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- Insert the AI catheter into the
vulva at a slight upward 30
degree angle to avoid inserting
the catheter into the urethra and
into the bladder
- Bring the tip of the catheter to the
opening of the cervix . The catheter
may already be in contact with the cervix. If not, take a firm hold of the cervix and push it forward. This straightens out the reproductive tract and eliminates folds in which the
catheter may be caught. Gently readjust the depth and direction of the catheter until you can easily guide it to the opening of the cervix. This is often one of the more challenging steps in the AI process. Around the cervix, the vagina forms a blind-ended pocket
called the fornix vagina
- Once the AI catheter is in the cervix, you will need to pass the catheter through the annular rings. Most cows and heifers will have three to four annular rings. Passing the catheter through the rings can be very challenging in some animals, as the cervix is a tough structure and may require a lot of manipulation Bring the tip of the catheter to the
opening of the cervix . The catheter may already be in contact with the cervix. If not, take a firm hold of the cervix and push it forward. This straightens out the reproductive tract and eliminates folds in which the catheter may be caught. Gently readjust the depth and direction of the catheter until you can easily guide it to the opening of the cervix. This is often one of the more challenging steps in
the AI process. Around the cervix, the vagina forms a blind-ended pocket called the fornix vagina
- Once the AI catheter is in the cervix, you will need to pass the catheter through the annular rings. Most cows and heifers will have three to four annular rings. Passing the catheter through the rings can be very challenging
in some animals, as the cervix is a tough structure and may require a lot of manipulation.
Recommendations
1.
Occasionally, electric thaw bath units may require calibration to
maintain water at the recommended temperature.
If the canister is raised into the neck of the tank for more than eight seconds, lower the canister back into the tank to allow for it to cool again for 20–30 seconds before raising it again. This helps to prevent partial thawing of straws that are not intended for immediate use.
Each straw is essentially a small ice cube that results in a slight
temporary cooling of the water in the thaw bath. In general, it is
recommended to thaw no morethan three straws in a single thaw
bath at any one time.
2.
• When inserting a straw into an AI catheter, work in a sheltered area out of direct sunlight. Work quickly to avoid exposing the straw to temperature swings.
If you believe you have inserted the catheter in the urethra, pull the catheter back while not completely removing the tip of the catheter from the vagina. It is important to not remove
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- make sure that all equipment is cleaned and sanitary
- Before putting on a shoulder-length sleeve, wrists and fingers should be free of any item that may be abrasive to the rectal lining of the cow or heifer.Most technicians choose to palpate with their non-dominant hand while manipulating the AI
catheter with their dominant hand. In addition, some technicians prefer to use an additional latex
or nitrile glove on the outside of the sleeve to improve fingertip dexterity.
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