Testicular morphological and ultrasonographic characterization of male gray brocket deers (Mazama gouazoubira) in different reproductive status

Background: Gray brocket deer (Mazama gouazoubira) populations have been declining due to human intervention.Yet, only a few studies have assessed ultrasonographic testicular characteristics in cervids. Considering the relevance ofmonitoring testicular size, blood flow, and parenchyma, the present study aims to establish baseline information on scrotalcircumference, testicular volume, and spectral Doppler parameters, to describe differences among adult male gray brocketdeer in different reproductive status, and to correlate ultrasound parameters with testes size measurements.Materials, Methods & Results: Six adult male gray brocket deers were used in the study. Scrotal circumference and testicularvolume were measured. B mode ultrasound images of testes (longitudinal and cross-sectional views) and epididymes weresubjected to computer-assisted analysis, obtaining the numerical pixel values (NPV) and pixel standard deviation (PSD).Using spectral Doppler, supratesticular artery blood flow velocities (peak systolic velocity - PSV, end diastolic velocity -EDV, time-average maximum velocity - TAMAX, resistivity - RI and pulsatility indices - PI) were obtained. Semen wasanalyzed through total motility, vigor, and concentration tests. Three animals were normospermic (F+ group) and threewere oligo/azoospermic (F- group). Groups were compared using were compared using a one-way ANOVA or KruskalWallis followed by Student-Newman-Keuls (SNK) test. Ultrasound parameters were correlated to testes size parametersusing Pearsons correlation for parametric variables and Spearmans correlation for non-parametric variables. F+ grouppresented significantly higher scrotal circumference (14.57 ± 1.19 cm), testicular volume (26.18 ± 4.94 cm3), and testescross-sectional NPV (69.88 ± 24.00) and PSD (10.78 ± 3.42) than group F- (NPV: 28.26 ± 13.75, PSD: 6.70 ± 1.84). Nosignificant differences were observed between the groups regarding...(AU)

Testicular morphological and ultrasonographic characterization of male gray brocket deers (Mazama gouazoubira) in different reproductive status

Background: Gray brocket deer (Mazama gouazoubira) populations have been declining due to human intervention.Yet, only a few studies have assessed ultrasonographic testicular characteristics in cervids. Considering the relevance ofmonitoring testicular size, blood flow, and parenchyma, the present study aims to establish baseline information on scrotalcircumference, testicular volume, and spectral Doppler parameters, to describe differences among adult male gray brocketdeer in different reproductive status, and to correlate ultrasound parameters with testes size measurements.Materials, Methods & Results: Six adult male gray brocket deers were used in the study. Scrotal circumference and testicularvolume were measured. B mode ultrasound images of testes (longitudinal and cross-sectional views) and epididymes weresubjected to computer-assisted analysis, obtaining the numerical pixel values (NPV) and pixel standard deviation (PSD).Using spectral Doppler, supratesticular artery blood flow velocities (peak systolic velocity - PSV, end diastolic velocity -EDV, time-average maximum velocity - TAMAX, resistivity - RI and pulsatility indices - PI) were obtained. Semen wasanalyzed through total motility, vigor, and concentration tests. Three animals were normospermic (F+ group) and threewere oligo/azoospermic (F- group). Groups were compared using were compared using a one-way ANOVA or KruskalWallis followed by Student-Newman-Keuls (SNK) test. Ultrasound parameters were correlated to testes size parametersusing Pearson’s correlation for parametric variables and Spearman’s correlation for non-parametric variables. F+ grouppresented significantly higher scrotal circumference (14.57 ± 1.19 cm), testicular volume (26.18 ± 4.94 cm3), and testescross-sectional NPV (69.88 ± 24.00) and PSD (10.78 ± 3.42) than group F- (NPV: 28.26 ± 13.75, PSD: 6.70 ± 1.84). Nosignificant differences were observed between the groups regarding...

Viabilidade espermática em sêmen in natura e refrigerado de veado-catingueiro / Sperm viability of brown brocket deer fresh and cooled sêmen

The brown brocket deer is in risk of extinction in two brazilian states. Therefore, more studies on semen evaluation may be useful to improve male reproductive capacity assessment. In this sense, this study evaluated the sperm viability using eosin-nigrosin and compared the results of fresh and cooled semen samples. Although the viability decreased in cooled semen, it maintained a satisfactory result.

Incidência de Ancylostoma sp. e Toxocara sp. em cães recolhidos pelo Centro de Zoonoses / Incidence of Ancylostoma sp. and Toxocara sp. in dogs collected by the Zoonoses Center

In order to verify the contamination by Ancylostoma sp. and Toxocara sp., 40 fecal samples were collected from dogs, 20 of them from the fire brigade and military police, and 20 from wandering animals collected by the Zoonoses Control Center (CCZ). Samples were stored in plastic bags, identified with the location, date, and information of the animal (name, age, sex, deworming and castrated when possible). The samples were sent to the Laboratory of Parasitology of Uece where they were stored and later analyzed. Of the total samples analyzed, 30% presented contamination by Ancylostoma sp., 22.5% of them presented contamination by Toxocara sp. and 12.5% contamination by Ancylostoma sp and Toxocara sp.

Viabilidade espermática em sêmen in natura e refrigerado de veado-catingueiro / Sperm viability of brown brocket deer fresh and cooled sêmen

The brown brocket deer is in risk of extinction in two brazilian states. Therefore, more studies on semen evaluation may be useful to improve male reproductive capacity assessment. In this sense, this study evaluated the sperm viability using eosin-nigrosin and compared the results of fresh and cooled semen samples. Although the viability decreased in cooled semen, it maintained a satisfactory result.(AU)

Incidência de Ancylostoma sp. e Toxocara sp. em cães recolhidos pelo Centro de Zoonoses / Incidence of Ancylostoma sp. and Toxocara sp. in dogs collected by the Zoonoses Center

In order to verify the contamination by Ancylostoma sp. and Toxocara sp., 40 fecal samples were collected from dogs, 20 of them from the fire brigade and military police, and 20 from wandering animals collected by the Zoonoses Control Center (CCZ). Samples were stored in plastic bags, identified with the location, date, and information of the animal (name, age, sex, deworming and castrated when possible). The samples were sent to the Laboratory of Parasitology of Uece where they were stored and later analyzed. Of the total samples analyzed, 30% presented contamination by Ancylostoma sp., 22.5% of them presented contamination by Toxocara sp. and 12.5% contamination by Ancylostoma sp and Toxocara sp.(AU)