Genitourinary and Skeletal Congenital Malformations in Lamb: Case Report in Western Region of São Paulo
DOI:
https://doi.org/10.17921/1415-6938.2025v29n1p151-160Abstract
Congenital malformations are structural defects that occur during intrauterine development and can result from genetic, environmental, or infectious factors. Susceptibility to these malformations varies according to the embryonic development stage. In Brazil, the ingestion of toxic plants, is a significant cause of deformities in ruminants, especially sheep, leading to conditions like arthrogryposis and craniofacial anomalies. This report describes a rare case of genitourinary and skeletal malformations in a lamb born in Pirapozinho, SP, in September 2022. The animal presented changes incompatible with life, leading to euthanasia. The necropsy revealed several anomalies, including vertebral deformities, pulmonary edema, cardiac hypertrophy, and anal atresia. The presence of the toxic plant juá bravo (Solanum viarum) on the property suggests its possible contribution. The observed malformations indicate a multifactorial etiology, involving potential nutritional deficiencies, plant toxins, and maternal infections. This case highlights the complexity of the causes of congenital malformations in sheep and underscores the need for comprehensive preventive approaches, such as nutritional monitoring, toxin control, and infection surveillance, to minimize these risks in sheep.
Keywords: Autopsy. Birth Anomaly. Ovine. Veterinary Pathology.
Resumo
Malformações congênitas são defeitos estruturais que ocorrem durante o desenvolvimento intrauterino e podem resultar de fatores genéticos, ambientais ou infecciosos. A susceptibilidade a essas malformações varia de acordo com o estágio de desenvolvimento embrionário. No Brasil, a ingestão de plantas tóxicas, é uma causa significativa de deformidades em ruminantes, especialmente ovinos, resultando em condições como artrogripose e anomalias craniofaciais. Este relato descreve um raro caso de malformações geniturinárias e esqueléticas em um cordeiro nascido em Pirapozinho, SP, em setembro de 2022. O animal apresentava alterações incompatíveis com a vida, levando à eutanásia. A necropsia revelou diversas anomalias, incluindo deformidades vertebrais, edema pulmonar, hipertrofia cardíaca e atresia anal. A presença da planta tóxica juá bravo (Solanum viarum) na propriedade sugere sua possível contribuição. As malformações observadas indicam uma etiologia multifatorial, envolvendo possíveis deficiências nutricionais, toxinas de plantas e infecções maternas. Este caso reforça a complexidade das causas das malformações congênitas em ovinos e destaca a necessidade de abordagens preventivas abrangentes, como monitoramento nutricional, controle de toxinas e vigilância de infecções, para minimizar esses riscos em rebanhos ovinos.
Palavras-chave: Anomalia de Nascimento. Necropsia. Ovinos. Patologia Veterinária.
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Copyright (c) 2025 Gabriella Capitane Sena, Isabella Guartieri Da Silva, Felipe Rydygier De Ruediger , Rejane Batista Brinholi , Leticia Jalloul Guimarães, Maria Fernanda Gibim, Isadora De Souza e Silva, Fabiola Cristine De Almeida Rêgo, Marilice Zundt, Rayane Cardoso Melozo
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