Some morphological clarifications on causal agents of Chabertia and Oesophagostomum in sheep

Despite previous researchers provided complete description of helminths, those images fail to demonstrate some anatomical features; spicules, guber-naculums, all 14 ribs; perils of cephalic pole crown and natural color of helminthes [6; 9]. For the purposes of study of helminths, by applying K.I Skrabin’s methodology, in 2014-2015, the full helminthology dissection of bowels of 30 fallen and cut sheep of different age at two southern regions of the Republic of Azerbaijan - in Astara where by sheep breeding takes place on invariable basis and foothill has been conducted. The microscopy study of collected helminths reveals clearly distinctive features Chabertia avina Oesophagostomum coumbianum and Oe.venulosum. It is the first time, visualizing of gubernaculums (Ch. avina, Oe. venulosum), spicules of helminths in different positions (Oe. venulosum) and all 14 ribs of bursa was achieved. Demonstration of the natural color of helminth (light yellow) was also succeeded. Spicules depending on their physiological condition may be situated inside the bursa or coming out of it. In all studies conducted on the samples, it has been concluded that in the helminths with neck papillae, the bursal papillae is absence, or vice-versa, in helminths with bursal papillae the neck papillae is not noticed ( Ch.ovina, Oe.columbianum, Oe. venulosum). Upon analysis of the literature, it has been concluded that these resources fail to demonstrate the full image of morphological specifics of separate helminths [6; 9]. At the images provided by the previous researchers, spicules Oe. columbianum are featured from inside of the helminths only [9,c. 454; 6, c, 71; 1, c. 196], as well as in all resources the spicules Oe. venulosum are not featured at all [9, c. 460; 6, c. 73]. No other references demonstrating other images of helminths different to those initially described by famous scientists Qudey and Rensom were identified in research sources [9, c. 454, 460, 464; 6, 71, 73; 1, c. 196]. It shall be noted that these images have been nomading through sources from many years. Accordingly, on the basis of aforementioned, it is considered important to provide a more comprehensive image and description of morphological structure of helminths studied. The provided image allows without any difficulties to determine the type category and to achieve an accurate diagnostics of the highlighted helminthes.

Гельминтоз, микроскопия, овцы, ребро, спикулы, Chabertiа, Oesophagostomum, Helminthosis, microscopy, sheep, ribs, spicules, Chabertia, Oesophagostomum

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