wet patches of wool due to the presence of fly eggs or larvae,Įarly detection allows for prompt intervention.behavioural changes (such as a sheep separating themself from the flock, signs of discomfort or restlessness) that could indicate a potential fly strike,.Regular inspection of your flock is crucial in identifying any signs of fly strike during a hot and humid season. In my opinion this is the best preventative measure available. Wool removed from around the head and the prepuce can prevent strike in these areas. Complete shearing controls outbreaks involving other parts of the body. If it's a bad season for fly I personally shear my sheep in the middle of summer in addition to main shear (Oct - Dec) and second shear (March - May). Blow fly infestation of the breech can be effectively controlled for 68 weeks by tagging or crutching (ie, wool is shorn between the legs and around the tail). Equipment and clothing become contaminated which further contaminates the shearer’s household through the washing machine.Īn alternative to using any pour-on is shearing your sheep more regularly. The chemical absorbs into a shearer’s skin and dust from the remnant is breathed in. Maggo remains on the skin of a sheep for a considerably long time and is easily identified by its white powder remnant. This is outlined in their safety data sheet in this link. Maggo can cause organ damage and cancer with repeat exposure. I will not shear your sheep if they have been treated with Maggo. Please note that almost all other pour-on applications are extremely toxic and hazardous to human health. I am happy to supply the amount needed for you to apply it yourself or come back and apply the product myself. This enables you to achieve the maximum timeframe of 12-weeks protection from shearing and the pour-on in succession. I recommend applying Extinosad 6-weeks after shearing your sheep. * Extinosad gives up to 6-weeks protection. Unlike most other fly strike preventatives or treatments Extinosad has no nasty organophosphate chemicals and provides protection from blowfly strains that are resistant to organophosphates. Its active ingredient is spinosad , which is derived from naturally occurring soil bacteria. Extinosad is considered an allowable product on organic farms and has no withholding period for meat or wool. * Shearing gives up to 6-weeks protection.ĭue to it being safe for humans to handle, Extinosad is the only pour-on fly strike preventative that I recommend using. The best fly strike preventative is regular shearing.īy removing the wool there is no cover for fly eggs and maggots to survive, allowing better airflow and sunlight to get in to the skin to kill any infestation of fly. The eggs hatch into maggots, which can cause severe damage and death if left untreated.Ĭertain measures can be taken to greatly reduce the chances of fly strike affecting your flock. Follow label directions.Ĭonsult your veterinarian if wounds heal slowly or persist.Fly strike is a condition where blowflies lay their eggs on a sheep. An aerosol product such as Catron IV (0.05% permethrin) be used on beef cattle, dairy cattle, sheep, goats, swine, and horses. Habitat Cosmopolitan blow flies can be found everywhere in association with human habitation as well as in the wild. An insecticide treatment may be used, but it does not take the place of regular, thorough cleaning.Regularly clean wounds and manure accumulations to reduce attraction of flies.Prevention is the best treatment for fly strike. The size of the wound increases and may become infected. Without treatment, areas where maggots developed become inflamed and exude puss, attracting more flies. Mature maggots drop from the animal and pupate in the soil, emerging as flies in 7 to 10 days. Maggots usually are full-grown in 6 to 12 days. (Photographer unknown)Ī tiny maggot hatches from each egg within 24 hours and crawls into soiled or decaying tissue to feed. Wound infested with maggots green bottle flies are still attracted.
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