Gross Morphology of Male Sex Organs of Cattle Egret (Bubulcus Ibis) During Breeding and Non-Breeding Seasons
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Abstract
Cattle egrets are important stocky heron involve in bio-control of cattle parasites. The study was aimed at evaluating the gross morphology of the sex organs of male cattle egret (Bubulcus ibis) during breeding and non-breeding season. Ten (10) male cattle egrets were sourced from the wild, five (5) each during breeding and non- breeding season. The animals were anesthesized using ketamine hydrochloride (50mg/kg body weight), thereafter perfused with 10% neutral buffered formalin. The reproductive organs were gently extracted using a pair of scissors and scalpel blade. Grossly during breeding season, the left testis is relatively slightly longer than the right testis but the right is relatively slightly wider than left. Both testes are whitish in color, varies between elongated to oval shaped, convex at lateral surface but slightly concave medially where it joins the epididymis. The epididymis is brownish spindle to fusiform in shape and is unsegmented. The vas deferens is light grey in color, slightly convoluted and conspicuous from point of exit at epididymis to the point of entry to the cloaca. While, in non-breeding season: the testis appeared creamy pale, shrunken with an oval shape. The vas deferens is faintly obvious from the epididymis but later become conspicuous after first twisting as it extends toward the cloaca. The cloaca is similar to those in other avian species as a single chamber that is connected to the vent as the most external portion of the sex organ. In conclusion, the male reproductive organs of cattle egrets showed great similarities and variations between breeding and non-breeding seasons and across various species of birds.
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© African Journal of Veterinary Sciences (AJVS), Faculty of Veterinary Medicine,University of Jos.
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