Psoroptic Mange

Psoroptic Mange

 

an animal disease characterized by itching, skin inflammation, loss of hair, and emaciation. Psoroptic mange is caused by mites of the genus Psoroptes. Different mite species occur in different species of farm animals.

Psoroptic mange causes the greatest economic damage to fine-wooled sheep raising and rabbit breeding. The disease generally appears in the winter or early spring, when the hair of the animals is quite thick and the humidity of the air near the skin is high. A female mite deposits 40 to 60 eggs in a lifetime; the development of a generation takes 14 to 20 days. Mites remain viable outside the host’s body for up to two months.

Infection occurs when healthy animals come in contact with diseased individuals or grooming utensils that have been used on diseased animals. Crowded maintenance conditions and inadequate feeding foster the spread of psoroptic mange. Diagnosis is based on clinical symptoms and the results of laboratory analysis of skin scrapings. Control measures include the destruction of mites on the animals’ bodies, in the pasture, on grooming utensils, and in barns.

REFERENCE

Dubinin, V. B. Chesotochnye kleshchi, ikh biologiia, vred v sel’skom khoziaistve, meryprofilaktiki i bor’by s nimi. Moscow, 1954.

V. I. POTEMKIN

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These endectocides with the active ingredient moxidectin offer persistent killing of internal parasites at multiple stages, including the most economically devastating parasite, Ostertagia ostertagi (brown stomach worm) and controls external parasites including lice, grubs and psoroptic mange mites on beef and dairy cattle.
Elias and Jabina (2005) also reported that the combination of Ivermectin @ 200pg/kg body weight at one week interval for two occasions and Amitraz@5ml/litre of water once in 4 days for 3 weeks could completely cure a case of psoroptic mange in goat.
Treatment of psoroptic mange in a goat- A case report.
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Dr Mary Vickers, a senior beef scientist with the English Beef and Lamb Executive (Eblex), said: "Experience from continental Europe, Ireland and the USA where it has long been recognised, suggests psoroptic mange could easily become a very common as well as highly debilitating UK disease if effective action is not taken to control it.
As untreated control, six Petri dishes containing only 2.5 ml of paraffin oil were used, while six Petri dishes containig 2.5 ml of a pyrethrum extract containing 25% of pyretrhins (AcaCerulen R[R], Teknofarma s.p.a., Torino), a drug used for topically treatment of psoroptic mange of the rabbit, represented the treated control.
The method of application for topical treatments of psoroptic mange, as in the case of Acacerulen R[R], often suggests to collect the scabs prior the treatment; however, in this study both essential oil and Acacerulen R[R] showed that the presence of scabs do not reduce their therapeutic efficacy.
Doramectin @ 200 pg/kg body weight subcutaneously was also found effective and safe in treatment of Psoroptic mange in rabbits (Bansod et al., 2004).
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(2012) recorded a concurrent Sarcoptic and Psoroptic mange in 21 rabbits.
Clinical examination indicates the probability of psoroptic mange and the diagnosis must be confirmed by microscopic examination of scab material from ear (Ribbeck, 1976).