Research concerning to characterize seasonal reproductive cycle in males and females of Crotalus durissus terrificus by ultrasound and hormonal measurement. Reproductive aspects (follicular and testicular cycles, and pregnancy) from 28 adult snakes (14 males and 14 females) during different months of the years were studied. Snakes housed individually in cages in an environment with controlled luminosity and humidity, and fed monthly. Females were examined by ultrasound during quiescence and active follicular phase, and pregnancy for follicular and embryo/fetal development. Males were evaluated to testicular echotexture and measurements during reproductive and non-reproductive season. The blood samples were collected from males and females for serum testosterone and progesterone determination, respectively. In 77% males the testes were identified by ultrasound and found increased size during summer, decreased serum testosterone in winter, and positive correlation between serum testosterone and testes size. There was no change in testicular echotexture in according to season. Testosterone concentration was decreased during winter and it was positively correlated with testes size. In 71% females, were observed follicular development (vitellogenesis) and gestation since winter to spring by ultrasonography. Parturition occurred mainly in summer. Pregnancy length was 123.0 ± 11.4 days, with mean 6.9 ± 1.5 newborns/female, and there was gradual increase of serum progesterone during this period. There was no variation in progesterone concentration in nongravid females. Males and females Tropical Rattlesnake show seasonal variation of reproductive cycle and was clear a biennial cycle in female. The ultrasonography can be considered an essential tool to accomplish the follicular development, pregnancy and testicular alterations in Tropical Rattlesnake.
. Cats, having a very low stress threshold, show altered vital parameters during consultations. on the physiology of stress in which it addresses the main changes that can be found at the expense of this phenomenon. The present study evaluated the clinical parameters of heart rate, respiratory rate and body temperature of cats, under natural stress conditions, treated in an outpatient setting at the University Veterinary Clinic of the Federal University of Tocantins and correlated them with the variables room temperature, room humidity and time measurement of these clinical parameters (beginning or end of the consultation). There was no significant correlation between body temperature and room temperature, which may suggest a good adaptation of cats that live in the region of Araguaína at high temperatures. The respiratory rate showed mean values higher than those described in the literature (P < 0.05). When evaluating the results, it was concluded that higher respiratory rate values should be considered in healthy cats, under stress conditions during outpatient care. Regarding the assessment of the correlation between body temperature and room temperature, there was no significance.
As neoplasias intracranianas estão entre as principais causas de disfunção cerebral em cães geriátricos, sendo o meningioma o mais comumente diagnosticado. É um tumor extra axial que surge de uma das três meninges, principalmente da aracnoide. Geralmente são classificados histologicamente como benignos, mas podem apresentar caráter biológico maligno devido as alterações intracranianas primárias e secundárias que podem ocorrer. A idade média para o surgimento é de nove anos de idade e tem como principal sinal clínico, o surgimento de crises epilépticas, mas outros sinais clínicos podem ocorrer dependendo da localização, extensão e taxa de crescimento. Objetivou-se com esse trabalho relatar um caso de meningioma intracraniano em lobo frontal de um cão da raça Pastor Belga, com seis anos de idade que foi atendido na clínica veterinária universitária da UFNT, com histórico de crises epilépticas de caráter progressivo e que durante avaliação foi observado head press e déficits visuais.
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