Electronic Theses and Dissertation

Ginjal merupakan organ ekskresi utama pada burung yang berperan dalam filtrasi darah serta pengaturan keseimbangan cairan dan elektrolit. Penelitian ini bertujuan mendeskripsikan struktur makroskopis dan mikroskopis ginjal burung kuntul kerbau (Bubulcus ibis) yang hidup di habitat mangrove Desa Lambada Lhok, Aceh Besar. Sampel berupa lima ginjal burung dewasa betina sehat dengan berat badan 250–350 gram. Analisis dilakukan secara deskriptif melalui pengamatan makroskopis dan mikroskopis, menggunakan pewarnaan Hematoksilin–Eosin. Hasil penelitian menunjukkan ginjal terletak di rongga synsacrum, berwarna merah kecoklatan, bertekstur kenyal namun rapuh, serta tersusun atas tiga lobus, yaitu kranial, medial, dan kaudal, dengan lobus kranial dan medial berukuran lebih besar. Berat rata-rata ginjal adalah 2,22 ± 0,07 g. Secara mikroskopis, ginjal tersusun atas lobulus tanpa batas tegas antara korteks dan medula, serta ditemukan dua tipe korpuskula renalis, yaitu korpuskula renalis tipe reptilia dan korpuskula renalis tipe mamalia. Penelitian ini menyediakan data dasar mengenai morfologi ginjal burung kuntul kerbau dewasa di habitat

The kidney is the main excretory organ in birds, playing a crucial role in blood filtration and the regulation of fluid and electrolyte balance. This study aimed to describe the macroscopic and microscopic structures of the kidney of the cattle egret (Bubulcus ibis) inhabiting the mangrove ecosystem of Lambada Lhok Village, Aceh Besar. Five kidney samples were collected from healthy adult female birds weighing 250–350 g. A descriptive analysis was conducted through macroscopic and microscopic observations, using hematoxylin–eosin staining. Macroscopically, the kidneys were located in the synsacral cavity, reddish-brownish in color, with a firm yet fragile texture, and consisted of three lobes (cranial, medial, and caudal), with the cranial and medial lobes being larger. The mean kidney weight was 2.22 ± 0.07 g. Microscopically, the renal parenchyma was arranged into lobules without a distinct corticomedullary boundary. Two types of renal corpuscles were observed, namely reptilia renal corpuscles and mamalia renal corpuscles. This study provides baseline data on the renal morphology of adult B. ibis in a mangrove habitat, which may serve as a reference for further studies on renal physiological adaptation and waterbird health