Downer Cows

Question 1

What is the definition of a downer cow?

Answer 1

A cow which has been recumbent for more than 24 hours and which does not have hypocalcaemia

Question 2

List four pre-disposing factors of downer cows

Answer 2

Delayed/inadequate treatment of MF
Unfavourable surfaces
Obesity
Dystocia

Question 3

What are the three main causes of primary recumbency in cattle?

Answer 3

Metabolic disease
Toxaemia/infection
Periparturient injury

Question 4

Describe the process of ischaemic limb damage.

Answer 4

Heavy cows, compression of underneath limb
Impairment of venous return
Ischaemia of semiteninosus/hamstring mucles
Leakadge of fluid into confined space
Further increase in pressure
Further necrosis
Swelling and rigidity of limb
Struggling causes further damage
Compression of sciatic and peroneal nerves

Question 5

List 8 things you must do during the examination of a down cow

Answer 5

Temperature
Auscultate
Vaginal examination
Rectal examination
Check mucous membranes
Provide food and water
Analgesia
Clinical pathology - especially biochemistry

Question 6

How often should you turn a down cow?

Answer 6

Regularly (at leats every 5-6 hours)

Question 7

List four options for hoisting cows

Answer 7

Bagshaw hoist
Inflatable bag
Harness/net
Float tank