RESUMO
The ventricular and atrial tributaries of the coronary sinus in the ovine represent basic contribution for the knowledge of the cardiac morphology in the species. In this study, 30 hearts of crossbred adult animals, either males or females, bred and slaughtered in the region of Araçatuba, São Paulo State, Brazil, had been used. After the slaughter of the animals, the joint heart and lungs were collected and brought to the laboratory. After the heart was isolated, a polyethylene cannula was inserted into the ostium of the coronary sinus in the right atrium, and either Neoprene-latex 650 or blue-tained natural latex diluted in water was injected. Following this procedure, the organs were fixed with 10% formaldehyde for no less than 72 hours. A pachymeter was used to measure the coronary sinus and its dissected ventricular and atrial tributaries. The analysis of 30 ovine hearts showed a variation of the length of the coronary sinus, which ranged from 1.9 to 3.2 cm. The amount of ventricular tributaries ranged from 3 to 5 branches, with five branches being more frequently observed. The atrial tributaries ranged from 3 to 8 branches, with either 6 or 7 branches more commonly seen. KEY-WORDS: Heart. Coronary sinus. Ovine
Os afluentes ventriculares e atriais do seio coronário no ovino representam fundamental contribuição para o conhecimento da morfologia cardíaca na espécie. Para tanto, foram utilizados 30 corações de animais mestiços, machos e fêmeas, adultos criados e abatidos na região de Araçatuba (SP). Após o abate desses espécimes, o conjunto coração e pulmões foi coletado e conduzido ao laboratório, isolando-se em seguida o coração, as suas veias foram injetadas mediante cânula de polietileno inserida no óstio do seio coronário no átrio direito. O material injetado foi Neoprene-latéx 650 ou látex natural diluído em água e corado em azul. Depois desse procedimento, os órgãos foram fixados por um período não inferior a 72 horas em solução aquosa de formol a 10%. A seguir, o seio coronário foi mensurado com paquímetro e dissecados os seus afluentes ventriculares e atriais. Ao analisarmos os 30 corações de ovinos observamos uma variação do comprimento do seio coronário de 1,9 a 3,2 cm. A quantidade de afluentes ventriculares oscilou de 3 a 5 ramos, com maior freqüência de 5 ramos. Os afluentes atriais foram em número de 3 a 8 ramos, com maior freqüência de 6 e 7 ramos.PALAVRAS - CHAVE: Coração. Seio coronário. Ovino.
RESUMO
Aortic and pulmonary semilunar valves were studied in 30 hearts of adult, mongrel ovines, either males or females, slaughtered in Araçatuba, São Paulo State, Brazil. Before the isolation, the valves had been dissected, arrested in plate, and fixed in watery solution of 10% formaldehyde. Images were obtained to analyze the valvular surface, which was then measured using the Analytical System of Images Leica® Qwin 550IW. The mean carcass weight was 77.6kg. The mean height was 0.63m, whereas the mean length was 1.28m. Regarding the hearts, the mean weight was 147.20g, then mean height 10.37cm, the mean width 7.52cm, and the mean diameter at the heart base 17.41cm. Coronary arteries originated from the aortic lumen, with its ostia positioned at the right (right coronary artery) and left (left coronary artert)semilunar aortic valves. The right coronary artery had the ostium located over the median line of the valve in 27 hearts(90%); in the remaining three hearts (10%) the ostium was located to the right of the line. In the majority of the hearts, 28 times (93.3%), the left coronary artery ostium was located to the right of the median line of the left semilunar aortic valve, whereas in two hearts (6.7%) the artery originated on the right of this line. KEY-WORDS: Heart. Valves. Ovine.
RESUMO
During the period from June 1974 to June 1975, five bovine fetuses between seven to nine months old were received for necropsy from four different counties of the S. Paulo State, Brazil. All of them were from brucellosis-free herds. Necropsy revealed slight liver enlargement generally accompanied by capsular petechial hemorrhages. Enlargement and congestion of the spleen, epicardial and endocardial petechiae were present in three fetuses and one of them had lungs with some hemorrhagic lobules. Cardiac blood films of all the fetuses stained by the Pappenheim's panoptic method showed Anaplasma marginale in two to 20% of red corpuscles. When stained with acridine orange and immunofluorescent methods blood films of the first fetus specifically showed A. marginale.