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Para estudo morfométrico, topográfico, da forma e das artérias da glândula tireóide, utilizou-se 30 fetos de bovinos, Bos taurus taurus, sendo 15 machos e 15 fêmeas, provenientes do Frigorífico Novilho do Valle, de Jaboticabal - SP. Canalizou-se a aorta torácica, injetou-se solução de neoprene látex corada e fixou- se com formol a 10%. Como média, encontrou-se, respectivamente, para comprimento e largura, para o lobo direito 15,45 mm e 15,16 mm, para o lobo esquerdo 18,61 mm e 16,14 mm e para o istmo 11,52 mm e 5,91 mm. O lobo direito encontra-se em nível do 2o anel traqueal (80,00%), 3o (10,00%), 4o (6,67%), 6o (3,33%), o lobo esquerdo encontra-se em nível do 2o anel traqueal (66,67%), 3o (20,00%), 4o (3,33%), 5o (10,00%). O lobo direito recebe as artérias tireóideas cranial e caudal em 73,34% dos casos e somente a artéria tireóidea cranial em 26,66%. O lobo esquerdo recebe as artérias tireóideas cranial e caudal em 60,00% dos casos e somente a artéria tireóide cranial em 40,00%. A artéria tireóidea cranial direita emitiu ramos que variaram entre 1 e 12 ramos, tendo como maior frequência de 3 em 30,00% das amostras, para a esquerda este número variou entre 2 e 9 ramos, tendo como maior freqüência de 3 em 36,67% dos casos. Ainda encontrou-se que a artéria tireóidea cranial pode ser dupla em 3,33% das peças, tanto para o antímero direito quanto para o antímero esquerdo, porém em peças diferentes. A artéria tireóidea caudal direita emitiu vasos que variaram de 2 a 5 ramos, tendo como maior frequência de 2 em 30,00% das amostras, para a esquerda este número variou de 2 a 6 ramos, tendo como maior freqüência de 2 em 23,34% dos casos. Encontrou-se que a artéria tireóidea caudal direita pode ser dupla em 6,66% das peças, e a esquerda em 3,33% dos casos estudados. A forma da glândula tireóide variou de ovalada a triangular, tendo a forma ovalada ocorrido em 90,00% dos casos, em ambos os antímeros The aim of this study was to analyze some morphometric, morphologic and topographic parameters of the arterial blood supply for the thyroid gland in 30 bovine fetuses (Bos taurus taurus), 15 male and 15 female, coming from Novilho do Valle Slaughterhouse, Jaboticabal, SP, Brazil. The thoracic aorta was canulated, latex neoprene colored solution was injected and specimens were fixed in a 10% formol solution. It was found that the mean length and width were, respectively, 15.45 mm and 15.16 mm for the right side, 18.61 mm and 16.14 mm for the left side, and 11.52 mm and 5.91 mm for the isthmus. The right side was found at level of the 2nd (80%), 3rd (10%), 4th (6.67%) or 6th (3.33%) traqueal rings. The left side was found at level of the 2nd (66.67%), 3rd (20%), 4th (3.33%) or 5th (10%) traqueal rings. The right side received the cranial and caudal thyroidea arteries in 73.34% of cases and only the cranial thyroidea artery in 26.66% of cases. The left side received the cranial and caudal thyroidea arteries in 60% of cases and only the cranial thyroidea artery in 40% of cases. The right cranial thyroidea artery gave off branches ranging from 1 to 12 twigs, with the highest frequency (3 branches) in 30% of the samples. For the left side, the range was from 2 to 9 branches, with the highest frequency (3 branches) in 36.67% of the cases. It was also found that the cranial thyroidea artery was double in 3.33% of the cases, in both the right and left sides, even so in different specimens. The caudal thyroidea artery gave off branches ranging from 2 to 5 twigs, with the highest frequency (2 branches) in 30% of the samples. For the left side, the range was from 2 to 6 branches, with the highest frequency (2 branches) in 23.34% of the cases. It was also found that the right caudal thyroidea artery was double in 6.66% of the cases while the left one was double in 3.33% of the studied specimens. Morphologically, the thyroid gland ranged from oval to the triangular shape, with the highest frequency (90% of the cases) in oval shape on both sides Dissertação (Mestrado)

In Brazil, there is increasing interest in the establishment of captive breeding programs for caiman. However, there is a paucity of in-depth studies on the proper care of these reptiles in captivity, particularly regarding optimal food type and frequency of feeding. The purpose of this study was to determine radiographic-anatomical aspects of, and gastrointestinal transit time of Caiman crocodilus crocodilus using contrast radiography. Ten caiman were used in the study, five males and five females, the animals were physically restrained for administration of a radiographic contrast medium, consisting of 10 ml/kg barium sulfate and mineral oil suspension (70%: 30% respectively), via the orogastric tube. Following contrast medium administration, radiographs were taken via dorsoventral projection first at five minutes, then at 6, 24, 30, 48, 54, 72, 80, 96, 104, 120, 130, 144 and 150 hours. This technique allows visualization of contrast medium passage through the GI tract, which enabled determination of gastrointestinal transit time in the spectacled caiman. The average time for contrast medium passage through the digestive tract of this species was 117 ± 29.6 h for females and 86.4 ± 21.5 h for males.

The purpose of this study was to describe the origin and branching of the cranial and caudal mesenteric arteries in geoffroy's side-necked turtle and to provide support on medical and surgical procedures. Five turtles from the Phrynops geoffroanus specie, from the Laboratory of Research in Wild Animals, which died of natural causes were used. The aorta artery was cannulated and filled with synthetic latex, and the plastron was removed to visualize the turtles´internal structures. The cranial mesenteric artery arises from the aorta and it branches into jejunal artery, ileocolic artery and caudal pancreaticoduodenal artery. The caudal mesenteric artery divides into two branches, a cranial one and a caudal one, and it also has its origin in aorta artery. The cranial branch structure binds itself to the ileocolic artery on the dorsal surface of the colon-rectum. KEYWORDS: Anatomy; arteries; Phrynops geoffroanus; reptiles.

El pirarucu, pez de la familia Arapaimidae, es una de las especies mas importantes y emblematicas de la ictiofauna amazonica. Para estudiar las caracteristicas anatomicas de su sistema circulatorio, fueron utilizados 10 ejemplares de Arapaima gigas, con un longitud total media de 74 cm, provenientes de lagos del rio Araguaia, Sao Miguel do Araguaia, Goias, Brasil. A los peces se les abrio la cavidad celomatica donde se identifico y canalizo la arteria aorta dorsal, injectandose una solucion coloreada de latex sintetico. La fijacion del material se realizo con inyecciones de formol al 10%. La arteria celiacomesenterica es responsable de la irrigacion del tubo digestivo y tiene origen en las 2a, 3a y 4a arterias branquiales eferentes izquierdas. El estomago esta irrigado por la arteria celiaca y por una rama gastrica de la arteria cecal ventral. El intestino recibe ramas arteriales procedentes de la arteria celiacomesenterica y de las arterias mesentericas craneal y caudal; los ciegos dorsal y ventral estan irrigados por las arterias cecales dorsal y ventral, respectivamente