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Table 5 Morphological features of the harvested GIT third stage larvae

From: Prevalence and associated risk factors of gastrointestinal helminths and coccidian infections in domestic goats, Capra hircus, in Minya, Egypt

Bunostomum sp. (Fig. 4 a)

Strongyloides sp. (Fig. 4e)

Haemonchus sp. (Fig. 4c)

Chabertia ovina (Fig. 4b)

Ostertagia ostertagi (Fig. 4 d)

Trichostrongylus axei (Fig. 3a)

T. Colubriformis (Fig. 3b)

Cooperia oncophora (Fig. 3d)

Cooperia curticei (Fig. 3c)

A medium-sized larva (the total length was 634.92 μm). The head was bullet. The esophagus has a prominent bulb caudally and it had 16 intestinal cells. It had along thin tail sheath measuring 76.9 μm. It had a wide body. The filament was medium, measuring 34.92 μm (approximately 50% of STE)

Slender short sized larva, measured 507.93 μm in length. Uniquely, it has a very long esophagus which extending nearly for 40% of the body length. Absence of tail sheath and high magnification shows that the tail is bifid

A medium-sized larva (the total length ranged from 608 to 693 The head was bullet. It had 16 alternating zigzag-shaped intestinal cells. It had a medium tail sheath (86 μm long). The tail of the sheath tapers to end in a whip-like, medium-sized filament and usually kinked. The filament constituted measured (33 μm long) about 10–15% of the total tail sheath

Long larva (the total length is 800 μm). The head was square-shaped. It had 28–32 intestinal cells which were rectangular- shaped. It had a long thin tail sheath (89 μm long). The filament was medium-sized measuring33 μm long (approximately 30% of the tail sheath long)

The total length was 666.67 μm. The head was head of ovine Ostertagia has a slight shoulder close to its anterior end giving it a square appearance. It contained 16 intestinal cells. The tail is rounded at its end, with a short tail sheath (57.14 μm) and blunt tail tip without a filament

The total length was 628.57- 685.71 μm. It was a short and straight. The head was rounded and the gut had 16 intestinal cells. The tail had a simple and blunt terminal end. It had a short STE ranged from 33 μm without a filament

Similarly, it was more or less closely related to T. axei, but the tail end had 2–3 tubercles (bifid structure, i.e., digitate tail)

Medium-sized larva with squared head, measured 716 μm, tail sheath measured 78 μm, sheath tapering to fine point. Characteristically, The head bears two refractile oval bodies at anterior end of the esophagus, the caudal tip of the sheath of C. oncophora is clearly perceptible

Similar to Cooperia oncophora, but the head of the L3 is narrower than that of C. oncophora. The caudal tip of the sheath Finer tip and vanish into nothingness