NADIS Knowledge Transfer - Ear Tip Necrosis

Please select one or more answers from the list for each question. Many have multiple answers - these will only be marked as correct when all the right answers and none of the wrong answers, have been selected

Which of the following is true of ear tip necrosis?

	It is caused by ear biting by other pigs
	It is often fatal
	It leads to carcase condemnation
	Only boar pigs are affected
	None of these

Ear tip necrosis is caused by:

	Bacterial infection of ear tips
	Grease
	Viral infection
	Adverse weather conditions
	All of these

Clinically, ear tip necrosis:

	Typically starts at 6-7 weeks of age
	May only present as a small black ear tip
	Progresses to erode increasing parts of the ear
	Can trigger secondary ear biting
	All of these

The long term effects of ear tip necrosis are:

	Slowed growth
	A crinkled margin to the ear tip
	Economic consequences for the value of a carcase
	Unsuitability for breeding
	All of these

Treatment of ear tip necrosis: (more than one answer may be correct)

	Is easily achieved
	Can be achieved by feed medication
	Is usually unjustified
	Can sometimes be achieved by topical application of antibiotics
	All of these

Prevention of ear tip necrosis requires:

	Increasing stocking rates
	Vaccination
	Routine washing of pigs at weaning
	Thorough hygiene in weaning pens
	All of these

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