Identification of Macracanthorhynchus hirudinaceus, Stephanurus dentatus and Trichuris suis in Native Pigs on Marajó Island

José Diomedes Barbosa^1*, Jenevaldo Barbosa da Silva², Alessandra dos Santos Belo Reis¹, Henrique dos Anjos Bomjardim¹, David Driemeier³, Felipe Masiero Salvarani¹, Cairo Henrique Sousa de Oliveira⁴, Carlos Magno Chaves Oliveira¹ and Marilene de Farias Brito⁵

¹Instituto de Medicina Veterinária, Campus de Castanhal, Universidade Federal do Pará, Rodovia BR-316 km 61, 68741-740, Castanhal, PA, Brazil

²Instituto de Ciências Agrárias, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Avenida Vereador João Narciso 1380, 38610-000, Unaí, MG, Brazil

³Escola de Medicina Veterinária da Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9090, Porto Alegre, RS, Brazil

⁴Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Campus Samambaia 74690900, Goiânia, GO, Brazil

⁵Instituto de Medicina Veterinária, Universidade Federal Rural de Rio de Janeiro, Br 465, Km 7, 23890-000, Seropédica, RJ, Brazil

*Corresponding Author : José Diomedes Barbosa Neto
Instituto de Medicina Veterinária, Campus de Castanhal, Universidade Federal do Pará, Rodovia BR- 316 km 61, 68741-740, Castanhal, PA, Brazil
Tel: +9137211686
Fax: +9137211686
E-mail: diomedes@ufpa.br

Received: August 23, 2017 Accepted: September 08, 2017 Published: September 12, 2017

Citation: Barbosa JD, Silva JB, Reis ASB, Bomjardim HA, Driemeier D, et al. (2017) Identification of Macracanthorhynchus hirudinaceus, Stephanurus dentatus and Trichuris suis in Native Pigs on Marajó Island. J Vet Sci Med Diagn 6:4. doi: 10.4172/2325-9590.1000237

 Technification of pig farming in recent decades has led to a significant reduction in the occurrence of helminth parasitism. However, the production of pigs in free-range systems is still a common reality in rural areas of Brazil, such as Marajó Island, in the State of Pará, a Brazilian Amazonian biome. Therefore, the present work describes the main parasitological and anatomopathological findings of six pigs in a sample of 23, of different age groups, raised under free-range conditions on native pastures on Marajó Island. During slaughter, the presence of Stephanurus dentatus in the ureters and renal pelvis, Macracanthorhynchus hirudinaceus in the small intestine and Trichuris suis in the cecum and colon was detected in these six pigs. The histopathology results showed different types of lesions, including mild granulomatous infiltrates in the lymph nodes, granulomatous inflammation and brown pigment in the tonsils, hyperkeratosis in the esophagus and nonglandular stomach, lung with dark pigment in the bronchioles and intra-alveolar macrophages, as well as squamous metaplasia of the peribronchial glands, hemosiderosis in the spleen, liver with marked extramedullary hematopoiesis, mild hepatitis and abscess caused by parasitic migration with eosinophils, intestinal edema and neuronal lipofuscinosis in the spinal cord. From these findings, it can be inferred that free-range pigs on Marajó Island are susceptible to helminths, reflecting the high degree of environmental contamination in which these animals are reared, and that such ecosystems can function as reservoirs of these agents. Helminth infections lead to losses in pig farming in the Amazon biome, showing the importance of the strategic control of these parasites.