Acta Scientific Veterinary Sciences (ISSN: 2582-3183)

Review Article Volume 5 Issue 7

Clinico-Pathological Lesions Associated with Experimental Infection of Salmonella enterica Subspecies Enterica Serovar Gallinarum in Cockerels

Barde Israel Joshua1*, Oladele Blessing Sunday2, Fatihu Mohammed Yakasai2 and Abdu Paul Ayuba2

1Veterinary Pathology Division, National Veterinary Research Institute, Vom, Plateau State, Nigeria
2Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Kaduna State, Nigeria

*Corresponding Author: Barde Israel Joshua, Veterinary Pathology Division, National Veterinary Research Institute, Vom, Plateau State, Nigeria.

Received: May 23, 2023; Published: June 30, 2023

Abstract

Salmonella enterica subspecies enterica serovar Gallinarum (SG) causes fowl typhoid (FT), a disease responsible for economic losses to the poultry industry worldwide. Experimental investigation of clinico-pathological lesions associated with experimental infection of Salmonella enterica subspecies enterica serovar Gallinarum in cockerels was evaluated base on clinical signs, haematological examination, serum biochemical assessment, gross and histological examination of the effect caused on the birds. Twenty cockerels were used after raring them from day old to four weeks before infection. Ten were subjected to the salmonella infection while other ten were used as control. This study revealed the severity of Salmonella enterica subspecies enterica serovar Gallinarum infection against multiple organs lesions to the birds which cause mortality as observed in the study after 5 days of infection with clinical signs of weakness, ruffled feathers, inappetence, difficulty in breathing, reluctance to move, loss of weight, increase temperature,watery and yellowish diarrhea. The haematology result indicates anemia, leucocytopenia, heterophilia and lymphocytopenia while the serum biochemical results showed that alanine transferase (ALT) and alkaline phosphatase (ALP) were statistically significant (P < 0.05), while aspartate aminotransferase (ASP), total protein (TP) and urea (U) were statistically insignificant (P > 0.05) in the infected group. The gross lesions observed include: pale carcasses, severely congested lungs, and whitish nodular lesions on the heart, haemorrhagic enteritis, and bloody intestinal content, bronze colouration of the liver, swollen kidney and enlarge spleen (splenomegaly). The histopathological lesions revealed neuronal necrosis, necrosis of the myocardium, sloughing of the intestinal villi, severe necrosis of the renal tubules, thickening of alveolar septae and bronchiolar epithelial lining, necrosis of the hepatocytes and congestion and splenic lymphocytic depletion. These findings showed the severity of Salmonella enterica subspecies enterica serovar Gallinarum on the organs of the cockerel birds (young birds) just as it does in adult birds.

Keywords: Pathological Lesions; Salmonella; Cockerel

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Citation

Citation: Barde Israel Joshua., et al. “Clinico-Pathological Lesions Associated with Experimental Infection of Salmonella enterica Subspecies Enterica Serovar Gallinarum in Cockerels".Acta Scientific Veterinary Sciences 5.7 (2023): 159-167.

Copyright

Copyright: © 2023 Barde Israel Joshua., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.




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