Koyun ve Keçilerde Digital Dermatitis

Year 2017, Volume: 12 Issue: 1, 99 - 110, 30.04.2017

Mehmet Akköse

https://doi.org/10.17094/ataunivbd.309782

Cited By: 2

Abstract

Şiddetli topallıkla seyreden contagious ovine digital dermatitis
(CODD), koyunların enfeksiyöz karekterli bir ayak hastalığıdır. İlk defa 1997
yılında İngiltere’de bildirilmiştir. CODD’un etiyolopatogenezi henüz açık
değildir. Sığırlarda digital dermatitise neden olan treponemaların, CODD etiyolojisinde
de rol oynadığı belirtilmektedir. Benzer treponema grupları keçilerin ve
geyiklerin (cervus elephus) ayak hastalıklarından da izole edilmiştir. Hastalık
keçilerde, klinik ve mikrobiyolojik bulgularının CODD ile benzerliği nedeniyle,
contagious caprine digital dermatitis (CCDD) olarak adlandırılmıştır. CODD için
en büyük risk faktörünün piyeten olduğu belirtilmektedir. Sindirim kanalı
digital dermatitis ilişkili treponemaların potansiyel enfeksiyon rezarvuarıdır.
Hastalık şiddetli topallıkla karakterizedir. Başlangıçta yangı koroner bantta
başlar ve bunu boynuz tırnağın koryumdan progresif olarak ayrılması izler. Boynuz
tırnak ayrılmaları ve koryum nekrozu hastalığın şiddeti ile pareleldir. COOD’un
tanısı hastalığın klinik bulguları ve şiddeti doğrultusunda yapılır. Anektodal
tedavi denemeleri, lokal ve/veya parenteral olarak verilen diğer
antibiyotiklerin de yararlı olabileceğini gösterirken; kanıta dayalı tedavi
denemeleri uzun etkili amoksisilinin parenteral yolla verilmesinin CODD için
etkili bir tedavi olduğun göstermektedir. Uygun biyogüvenlik ve çiftlik
yönetimi protokolleri ve aşıların geliştirilmesini kapsayan sürdürülebilir kontrol
stratejilerinin geliştirilebilmesi için daha ileri mikrobiyolojik ve
epidemiyolajik çalışmalara ihtiyaç duyulmaktadır. Bu derlemede CODD’un etiyolojik,
epidemiyolojik ve klinik yönleri ile control yaklaşımları hakkında güncel
bilgiler değerlendirilmiştir.

Keywords

Contagious ovine digital dermatitis (CODD), Koyun, Topallık, Treponema

Digital Dermatitis in Sheep and Goats

Abstract

Contagious ovine digital dermatitis (CODD) which characterised by severe lameness is an infectious foot disease in

sheep. It was first described in the UK in 1997. The aetiopathogenesis of CODD is currently unclear. It is stated that

treponemes caused digital dermatitis in cattle also play a role in the etiology of CODD. The same treponema phylogroups was

isolated also from goats and elk (cervus elephus). The diseases was named caprine contagious digital dermatitis (CCDD) in

goats because of clinical and microbiological similarity with CODD. It was remarked that the biggest risk factor for CODD was

footrot. The gastrointestinal tract is a potential infection reservoir of digital dermatitis-associated treponemes. The disease

charactised by severe lameness. Initially, the inflammation starts on the coronary band and followed by progressive

separation of the hoof capsule from the chorium. Separations of hoof capsule and necrosis of chorium is parallel with severity

of the disease. The diagnosis of CODD was made in the direction of clinical sings and severity of the disease. Evidenced-based

treatment trials indicate that parenteral administration of long-acting amoxicillin is an efficacious treatment for CODD, while

anecdotal evidence suggests other antibiotics, given locally and/or parenterally, may also be beneficial. Further

microbiological and epidemiological research is required to develop sustainable control strategies, including the development

of vaccines and appropriate biosecurity and farm management protocols. In this review current knowledge of the clinical,

aetiological, and epidemiological aspects of CODD and approaches to its control was assessed.

Keywords

Contagious ovine digital dermatitis (CODD), Lameness, Sheep, Treponema

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