Ascariasis in poultry: A comprehensive review

Abstract

Parasitic infections pose a significant challenge in poultry production. Ascaridia galli (Syn. A. lineata, A. perspicillum) is a nematode belonging to the phylum Nematoda that causes frequent infections along with significant morbidity and mortality in poultry birds, thereby leading to huge economic losses. A. galli has been detected in most of the species of poultry, including chickens, turkeys, geese, guinea fowl, and a wide variety of wild birds, with chicken being the main host. A. galli is commonly found in the small intestine of birds. Clinical symptoms include lack of appetite, ruffled feathers, weight loss, reduced egg production, anaemia, and diarrhoea, ultimately causing death. Upon post-mortem (PM) examination, partial or complete obstruction of the intestinal lumen alone or along with catarrhal to haemorrhagic enteritis is highly evident. Histopathologically, desquamation, hyperplasia of secretory cells and villous atrophy can occur. Treatment with suitable anthelmintics and good management practices are the key components for the treatment, prevention and control of this disease.