Cattle Medicine Q&A 08 - Revision history

Bara at 15:39, 2 September 2011

2011-09-02T15:39:18Z

Nlyons at 09:20, 31 August 2011

2011-08-31T09:20:40Z

Bara at 16:42, 5 August 2011

2011-08-05T16:42:35Z

Ctrace at 14:19, 23 May 2011

2011-05-23T14:19:04Z

Ctrace: Created page with "{{Template:Manson}} 500px
'''After a stormy autumn night you are called to attend a recumbent 10-year-old Simmental-cross-Friesia..."

2011-04-12T18:15:35Z

Created page with "{{Template:Manson}} centre|500px '''After a stormy autumn night you are called to attend a recumbent 10-year-old Simmental-cross-Friesia..."

New page

{{Template:Manson}}

[[Image:Cattle medicine 8.jpg|centre|500px]]

 

'''After a stormy autumn night you are called to attend a recumbent 10-year-old Simmental-cross-Friesian beef suckler cow that calved 36 hrs ago. The cow is at pasture with a group of predominantly summer-calving cows which is receiving no supplementary feeding other than barley straw in a ring feeder. The cow was found by the farmer to be in lateral recumbency and ‘thrashing wildly’. When you arrive the cow appears quiet but clinical examination precipitates seizure activity.'''

 

<FlashCard questions="4">
|q1=What conditions would you consider? (Most likely first.)
|a1=The most likely conditions to consider include: 
*hypomagnesaemia
*hypocalcaemia
*lead poisoning
*bovine spongiform encephalopathy.
|l1=Hypomagnesaemia
|q2=What treatment would you administer immediately?
|a2=While unlicensed for use in cattle, 6–8 mL of 20% pentobarbital solution injected intravenously controls seizure activity a great deal more effectively than either diazepam or xylazine. 
The cow is then haltered and 50 mL of 25% magnesium sulphate is added to a bottle of 400 mL of 40% calcium borogluconate solution and given by intravenous injection over 10 minutes. 
The remaining 350 mL of the bottle of 25% magnesium sulphate solution is given subcutaneously in two divided sites immediately behind the left shoulder. 
The cow was able to maintain sternal recumbency when pulled upright after all treatments had been administered and walked off to find its calf after a further 20 minutes.
|l2=
|q3=What samples would you collect?
|a3=A serum sample for calcium and magnesium concentrations should be collected in case the cow does not respond to treatment.
|l3=Hypocalcaemia
|q4=What control measures could be adopted for the remainder of the herd?
|a4=The farmer was advised to start feeding 2 kg per head per day of highmagnesium concentrates immediately. Good-quality barley straw should also be ''available ad libitum.''
|l4=
</FlashCard>

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