Epidemiologische Aspekte zur Chorioptes-Räude bei Milchkühen in der Schweiz: Eine Felduntersuchung

Abstract

In the canton of Freiburg, in the midlands of western Switzerland, the influence of housing systems and season on the distribution of Chorioptes-mange was studied. 24 herds with a total of 667 dairy cows held in tethered and loose housings were considered. In the 14 farms with tethered housing 33.8 % of the dairy cows were clinically suspicious and 31.0 % parasitologically positive. In the ten studied farms with loose housing 26.5 % were clinically suspicious and 17.8 % parasitologically positive cows. Statistically the infestations of the two housing systems did not differ significantly (U-test, p > 0.05). The transmission of mange occurs mainly directly from animal to animal, and chronically infested animals are considered to be the main source of infestation. The seasonality of Chorioptes-mange which is typical of our temperate climate was confirmed by serial studies made in two endemically infested farms with tethered housing.

Ectoparasites Infestation to Small Ruminants and Practical Attitudes among Farmers toward Acaricides Treatment in Central Region of Java, Indonesia

“…Chorioptic mange was morphologically identified according to the presence of large caruncles and short pedicels. Chorioptic mange is one of the non-burrowing mites, and it is less pathogenic compared to S. scabiei [67,68]. During the collection of skin scrapings to find S. scabiei, this ectoparasite was also isolated from the surface of the skin.…”

Morphological features of the causative agent of chorioptic mange isolated from cattle

“…Chorioptosis of cattle is recorded in many countries of the world, especially during the stall period in the autumn-winter season. The infestation can lead to significant economic losses in the livestock industry (Kollbrunner et al, 2010;Vieira et al, 2014;Asmare et al, 2016). Therefore, timely detection and identification of its causative agent requires knowledge of their morphometric features.…”

“…Chorioptosis (chorioptic mange) is often diagnosed in cattle regardless of their breed, age and method of keeping in almost all climatic zones. Disease caused by chorioptic mites can become widespread among susceptible livestock and cause significant economic losses to the industry (Rehbein et al, 2005;Kollbrunner et al, 2009Kollbrunner et al, , 2010Vieira et al, 2014;Asmare et al, 2016). The acariasis can be acute, subacute or chronic, characterized by inflammation of the skin, itching in the infested body areas, hair loss, skin thickening, the presence of scabs, crusts and cracks on it, mainly in the area of the limbs, the root of the tail, as well as exhaustion of host animals.…”

Distribution and features of сhorioptosis of cattle as part of mixinvasions in farms of Poltava region

“…Наукова література свідчить, що хоріоптоз зареєстровано у великої рогатої худоби незалежно від їх породи, віку та способу утримання практично у всіх кліматичних зонах. Захворювання, викликане хоріоптесами, може набувати значного розповсюдження серед сприйнятливого поголів'я і завдає вагомих економічних збитків галузі (Rehbein et al, 2005;Kollbrunner et al, 2009;2010). Акарозна інвазія перебігає гостро, підгостро або хронічно, характеризується запаленням шкіри, свербежем у місцях паразитування кліщів, випадінням волосся, виснаженням тварин, що в комплексі призводять до зниження їх продуктивності та племінної цінності (Rhodes, 1976;Shibata et al, 2003;Nematollahi et al, 2007).…”