Diagnosis of Avian Tuberculosis in Swinhoe's Pheasants Using Conventional and Molecular-based Techniques

Hsieh, Yao‐Ching; Tsai, Keng-Yu; Wang, Chi Y.; Hung, Chien-Ning; Tsai, Shinn-Shyong; Liu, Hung-Jen

doi:10.1637/9017.1

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“…Tuberculosis is a chronic and contagious disease caused by Mycobacterium avium in poultry (Thoen and Karlson 1991). Although most of the poultry tuberculosis is reported in chickens (Gonzalez et al 2002), it has also been reported in turkey (Gerhold and Fischer 2005), goose (Oruç and Bali 2004), pigeon (Bougiouklis 2005;Terim Kapakin et al 2010;Terim Kapakin and Alçığır 2009), ostrich (Garcia et al 2001), quail (Tell et al 2003), pheasant (Hsieh et al 2009), psittacine birds (Lennox 2007), parrots, budgerigars, canaries, eagles and other domestic and wild birds (Thoen and Karlson 1991). In particular, while pigeons are highly resistant to M. avium infection, pheasants are susceptible to disease (Singbeil et al 1993;Hejlicek and Treml 1994).…”

Section: Introductionmentioning

confidence: 99%

Spontaneous Tuberculosis Cases In Two Pigeon Flocks

Ekebaş¹,

Atasever²

2020

Van Veterinary Journal

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In this study, a 2-year-old female rock pigeon and two 4-month-old tumbler domestic pigeon brought to Erciyes University, Faculty of Veterinary Medicine, Department of Pathology, for necropsy were diagnosed as tuberculosis. On the macroscopic examination, several nodules with yellowish colour were seen in the pulmonary sections as well as in the rock pigeon. The grey-yellowish nodules were found on the right wings (1 x 1.5 x 0.8 cm in size), the liver surface and the jejunum in the small intestine (with a size ranging from 0.5-1 mm to 1 cm) and near the craw (0.3 x 0.8 cm in size) of the one tumbler pigeon. In other, grey-yellowish nodular structures were seen in the lungs 1 x 1.2 x 0.5 cm and 0.5 x 0.7 x 0.6 cm in the liver. Histopathological examination showed that these lesions were tuberculous lesions consisting of homogeneous eosinophilic colourized casein necrosis, surrounding multi-nucleated giant cells, epithelioid histiocytes, histiocytes, lymphocytes and, most extensively, typical tubercles with a fibrous capsule. According to In the Ziehl-Neelsen staining, tuberculous bacillus was not observed in the tissue of rock pigeon, while tuberculous bacillus was found in a large number of dense red in tubercle structures in both of the tumbler pigeons. Because of the zoonotic nature of the agent and the risk of contamination, it was evaluated as a case report.

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