Pathogen elimination through Medication

Example – Sarcoptes scabiei var suis – farrow to wean unit.

Science points re Sarcoptes scabiei var suis
Mange mite	Avomectin remain active in the pig for 7 days post-treatment
	Sarcoptic eggs are resistant to avomectins
	Sarcoptic eggs hatch in 5 days
	Sarcoptic mites may live off the host for 21 days, but in the summer months this is reduced to 5 days
	Boars are difficult to estimate their weight and are often underdosed – a major reason for the programme failure
Animal	Programme
Suckling pigs	Inject with an avomectins at 300 mg/kg via a 21 gauge ^5/8 " needle, using an insulin syringe by injection in the neck
Gilt pool	In feed medication for 7 days, with an inclusion of avomectin in-feed at 100 mg/kg bodyweight. Ensure all animals eat 2.75 kg per day.
Breeding and pregnant sows	In feed medication for 7 days, with an inclusion of avomectin in-feed at 100 mg/kg bodyweight. Ensure all animals are fed 2.7 kg of feed per day ignore condition score
Lactating sows	Feed 2.7 kg of the dry sow ration, with an inclusion of avomectin in-feed at 100 mg/kg bodyweight in the morning for 7 days. Feed lactator in the evening
Boars	Feed dry sow ration, with an inclusion of avomectin in-feed at 100 mg/kg bodyweight. For large boars increase quantity feed. For instance a 200 kg boar feed 2.7 kg per day for 7 days; 250 kg boar feed 3.3 kg per day for 7 days and for a 300 kg boar feed 4 kg per day. Or inject with Avomectin 300 mg/kg
Hospital pens	Inject all pigs with an avomectin at 300 mg/kg in the neck
All adults off feed for more than 24 hours	Inject with avomectin at 300 mg/kg bodyweight in the neck. Note sows in oestrus
Buildings	At the end of the 7 day animal treatment period spray all houses with amitraz 0.1% at 40 ml per 10 litres of water dilution using a knapsack sprayer
Clothing	Stockpeople attending to the grow/finish herd should not wear the same overalls when attending to the breeding herd
	At the end of the 7 day animal treatment period all overalls and boots should be washed thoroughly, disinfected and re-washed in a amitraz 0.1% solution at 40 ml per 10 litres of water dilution
Repeat medication programme with another injection and 7 day medicated feed
Feed bin management	All feed lines should be flushed with normal food after the 7 day period to remove any treated feed material.

If this programme is combined with a partial depopulation or a clean pen break system, mange can be eliminated from a farrow to finish farm for more detail consult with your veterinarian