![]() The best approach to preventing flystrike is to use a combination of strategies to keep sheep as unattractive to flies as possible. Severely affected animals should be euthanised. ![]() Remember those with wounds cannot be sent to the works until they have healed. All affected animals should be given a non-steroidal anti-inflammatory injection (Metacam) too, to get the inflammation down and provide some pain relief, making them heal quicker.Īll affected animals should be provided with food, water and shade until healed. It prevents the larvae from moulting, so doesn't kill them immediately, however, it is much safer for the animals and people. Cyrex is another product that can be used. The jumping of the sheep when being treated is indicative of its nerve endings being stimulated, and the same can happen to us if we get it on our skin. Maggo can be used, however, be careful when using it, as it works on the nerve system of flies. Apply an approved insecticide dressing to the affected area and the fleece around it. Take care not to expose pink skin, as this can cause sunburn and delay healing. Clip the wool around the area until you get clear margins. Affected sheep may take up to six weeks to recover lost weight, and up to eight months for the fleece to recover.įlystruck sheep need to be treated as soon as possible. Wounds may be seen and wool will fall out. After a few days, the sheep stop eating, seek shade, and appear depressed. The earliest signs of flystrike are those of irritation - stamping, tail twitching, rubbing and biting the affected area. This attracts more flies, exacerbating the problem. The eggs hatch and the maggots feed on the skin, causing more damage. The flies are attracted to the sheep with faecal and urine staining, wounds, and fleece or foot rot.įlies lay their eggs on the sheep where there is warmth, moisture, and a food supply. Once you start seeing flies in your house (not cluster flies) your stock is at risk. Adult flies and larvae, which have overwintered, become active and start to hatch once the soil temperature exceeds 12 degrees. The main flystrike challenge period is November through to March. There are three species of blowfly that can initiate flystrike in sheep and two species that are secondary invaders. More informationĪbout viewing, downloading, and printing report files can be found at the common download problems FAQ.Vet Emily discusses how to be proactive on combating flystrike in the South.įlystrike is the most important external parasite of sheep in New Zealand, and yes, it's definitely in Southland. Download the latest version of Adobe Reader, free of charge. PDF documents opened from yourīrowser may not display or print as intended. The documents to your computer and open them with Adobe Reader. For best results viewing and printing PDF documents, it is recommended that you download Part or all of this report is presented in Portable Document Format Severe infestation of blow flies in a raccoon In all probability, the larvae described above hatched from eggs originally laid in a skin wound although no evidence for this was found. sericata may vary in virulence, some strains becoming parasitic with an ability to invade healthy tissue. Off.) and Hall (1948: The blowflies of North America. Gross and microscopic examination of tissue from the raccoon gave no indication of any acute process which might have led to its moribund condition. ![]() A few larvae were in comers of the eyes but none were found in other orifices. Muscle under lying infested skin appeared healthy and untraumatized. Inspection revealed the presence of thousands of larvae of the green-bottle fly, Phaenicia sericata, (Meigen}1 actively tunneling in and out of the skin and subcutaneous tissue. The fur was matted over the right hind leg, the inguinal region, and over much of the left hind leg. There was no evidence of trauma, either internal or external. Mixon of the Maryland Department of Game and Inland Fish submitted it to us for study. It continued to become weaker and on May 3, 1954, B. It was then caught and held in captivity for a few days. (Procyon lotor) was observed in a weakened condition for several days at a farm a few miles east of Salisbury, Maryland.
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