Marcus Antonio Rossi Feliciano

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The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0-6, Group 1) and five to a long-term progesterone-based protocol (Days 0-12, Group 2)(More)
Background: The very fi rst sign to confi rm pregnancy in bitches is the gestacional sac detection. In this primary moment, it is very small with only few millimeters. The average time for gestational sacs visualization is approximately 20 days after mating (2 mm) surrounded by a thin hyperechoic wall (trophoblasts). The Doppler is a new method for(More)
The Amazonian brown brocket deer (Mazama nemorivaga) is an endemic species of the Amazon rainforest region, which has suffered constant threats due to hunting and increasing deforestation. Artificial insemination (AI), combined with genomic banks, is considered an important tool for maintaining conservation programs of endangered species; however, the(More)
Testicles of 30 mongrel cats were analyzed histologically and morphometrically, divided into three groups: G1 (1-2 years old), G2 (over 2 and up to 4 years old) and G3 (over 4 and up to 6 years old). After orchiectomy and histopathology, the morphometric parameters studied were: thickness of the tunica albuginea (72 μm) and seminiferous epithelium (77.19(More)
Background: The Dopplerfl uxometry is a diagnostic technique that provides anatomical information and real-time dynamic tissue evaluation by determining the presence and direction of blood fl ow in a vessel and their hemodynamic features. Considering the importance of Doppler to pregnant women and the recent studies of vascular indices in pregnant animals(More)
The objective of this study was to evaluate the reproductive and productive performance of Santa Inês ewes bred at different times of the year in humid tropical climate. One hundred and forty-eight Santa Inês ewes were grouped according to the time of the year of their breeding season (i.e., mating period) (dry/wet, wet, wet/dry, and dry season). The(More)
The aim of this study was to evaluate and compare the efficacy of B-mode, Doppler, contrast-enhanced ultrasonography (CEUS), and Acoustic Radiation Force Impulse (ARFI) elastography in predicting malignancy in canine mammary masses. This was a prospective cohort study from 2014 to 2016, which included 153 bitches with one or more mammary masses. A total of(More)
Background: In humans and bitchs the age is another factor that may affect the size of ovarian structures, verifying alterations in the quality of the pool and size of follicular structures, which can compromise the use of these structures for in vitro maturation. There are no reports correlating the morphometric characteristics of the follicles and ovarian(More)
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