Veterinary Blood Sampling Techniques

Dr. Gaby Meyer from UC Davis explains how to take blood samples from cattle, detailing the reasons for sampling, types of blood tubes, and the correct techniques for blood collection. The video emphasizes the importance of proper restraint, needle insertion, and handling of blood tubes to ensure accurate results. It concludes with additional resources for further learning.

What are some reasons for taking blood samples from cattle?

• To determine age

• To assess weight gain

• To measure milk production

• To check for mineral deficiencies

What is the recommended action if a veterinarian cannot visit immediately?

• Ignore the issue

• Perform the blood sampling task yourself

• Wait for the veterinarian

• Call another veterinarian

Which color tube is used for a trace mineral panel?

• Green top

• Purple top

• Red top

• Royal blue top

Which tube is used when serum is needed?

• Royal blue top

• Red top

• Purple top

• Green top

What is the purpose of the rubber piece on some needle hubs?

• To increase blood flow

• To make the needle sharper

• To change the color of the blood

• To protect the needle and stop blood flow when detached

Why is it important to avoid the vertebrae when inserting the needle?

• To ensure the blood tube fills quickly

• To prevent injury to the cow

• To make the process faster

• To avoid contamination

What should you do if you don't get blood flow immediately?

• Increase the pressure on the needle

• Start over with a new tube

• Check the tube attachment and redirect the needle if necessary

• Remove the needle

What is the correct angle for inserting the needle into the tail?

• 45 degrees

• 30 degrees

• 60 degrees

• 90 degrees

What should you do if the blood tube contains an anticoagulant?

• Freeze it immediately

• Shake it vigorously

• Leave it still

• Gently rock it several times

Why is it important to label the blood tube?

• To ensure the tube is used correctly

• To track the amount of blood

• To know the date of collection

• To identify the animal it came from