Different Parts Of Alimentary Canal Research Articles

Occurrence of Endoparasites in Domestic Fowls (GALLUS GALLUS) And Ducks (ANAS PLATYRHYNCHOS)

A comparative study was carried out to investigate the gastrointestinal helminth infection in domestic fowls Gallus gallus (30 specimens) and ducks Anas platyrhynchos (30 specimen). A total of 1610 helminth parasites of eight species from three taxonomic classes were recovered and identified from the different parts of alimentary canal. Among the parasitic group the cestodes were turned out to be predominant with a prevalence of 50.93% (820) whereas, the rate was 27.97% (450) and 21.19% (340) in nematodes and trematodes, respectively. The prevalence of parasites species were Ascaridia galli (80%), Echinostoma revolutum (73.33%), Raillientina echinobothrida (53.33%), Echinoparyphium recurvatum (53.33%), Cotugnia digonophora (50%), Amoebotaenia sphenoids (30%), Ascaridia hermaphoridita (43.33%) and Hymenolepis cantania (26.67%). The rate of infestation was higher (90%) in fowls than in ducks (80%) and the intensity of infections was slightly higher in ducks 31.67 (31.48 in domestic fowls). In both domestic fowls and ducks, cestode parasites were most dominant, and prevalence (83.33% and 16.80±4.31) and intensity were lower in fowls than in ducks (76.67% and 17.39 ± 4.2 2). Highest rate of infestation was observed in summer both in fowl (81.82%) and duck (70%) while, winter was associated with peak intensity of parasites in fowl (46.67) and in duck (44.28) observed in summer. The prevalence of parasites was higher in caecum of both domestic fowls and ducks. Bangladesh J. Zool. 49(1): 35-46, 2021

Comparative incidence of Helminth parasites in domestic fowl, white leg horne, layer and cock

Investigation on gastrointestinal helminths was conducted on 20 domestic fowl, 20 white leghorn, 20 layer and 20 cock of Dhaka city. Six species of helminth belonging to trematode, cestode and nematode were found to infect the different parts of alimentary canal of domestic fowl. The prevalence of helminths in domestic fowl were as follows: Catatropis verrucosa (25%), Amoebotaenia sphenoides (10%), Hymenolepis cantaniana (35%), Rallietina echinobothrida (55%), Ascardia galli (70%) and Heterakis gallinarum (30%) whereas, in white leghorn the prevalence of Rallietina echinobothrida (20%) and Ascardia galli (35%) were recorded. In layer, higher prevalence of Rallietina echinobothrida (55%) and Ascardia galli (60%) were recorded; in cock the prevalence of specific helminthes were as follows: Hymenolepis cantaniana (10%), Rallietina echinobothrida (40%), Cotugnia digonopora (20%), Ascardia galli (60%) and Heterakis gallinarum (25%). Along with the prevalence and intensity of infestation of different species of parasites, intensity were also recorded. Highest number of parasites were collected from intestine.Bangladesh J. Zool. 44(2): 245-254, 2016

Histological and Histochemical Studies on the Alimentary Canal of Spur-Winged Lapwing Vanellus Spinosus

Aim of the work: The present study aims to describe and compare between the different parts of the alimentary canal of Spur-winged lapwing Vanellus spinosus from the histological and histochemical reviews. Materials and methods: This animal was caught from its natural habitat (Nile Delta in Egypt); dissected and the alimentary canal was fixed in the suitable fixatives for histological and histochemical investigations. Results: Histological findings revealed that the alimentary canal wall in different parts under investigation is consisted of four main layers which are; serosa, muscularis, submucosa and mucosa. The serosa is composed of simple squamous epithelium. The muscularis is formed of outer circular and inner longitudinal muscle fibers. The submucosa is showing green colour with Masson’s stain due to its content of connective tissue. The mucosal folds of oesophagus are characterized by stratified squamous epithelium. At the base of these folds, oesophageal glands which secrete acid mucopolysacchride are located. The stomach composed of two parts; cardiac (glandular) and pyloric (muscular). The gastric glands of glanular portion are differentiated into deep and superficial gastric glands. The deep gastric glands are of compound-branched alveolar and have neutral mucopolysacchride secrections. While, the superficial gastric glands are of compound tubular type and secreting acid and neutral mucopolysacchride since they give blue and red colours with Alcian PAS stain. The gastric glands in muscular portion of stomach, are compound tubular type and have acid and neutral mucopolysaccharides. The mucosal villi of duodenum and ileum are characterized by tubular glands (crypts of Leiberkhun), which contain acid and neutral mucopolysaccharides. The mucosal layer of rectum is covered by simple columnar epithelium containing goblet cells in addition to the rectal glands. This layer nature is acid and neutral mucopolysaccharides. The histochemical results showed differences in the stainability and distribution of polysaccharides, acid and neutral mucopolysaccharides in different parts of alimentary canal of investigated animal.