Evaluation of Hamilton-Thorn Automated Semen Analysis System

1992 ◽  
Vol 28 (3) ◽  
pp. 213-222 ◽  
Author(s):  
E. M. Kolibianakis ◽  
B. C. Tarlatzis ◽  
J. Bontis ◽  
J. Papadimas ◽  
E. Spanos ◽  
...  
2020 ◽  
Vol 114 (3) ◽  
pp. e534-e535
Author(s):  
Mary Katherine Samplaski ◽  
Owen Falk ◽  
Stan Honig ◽  
David Shin ◽  
William J. Matthews ◽  
...  

2000 ◽  
Vol 73 (3) ◽  
pp. 636-640 ◽  
Author(s):  
William R. Boone ◽  
Jeffrey M. Jones ◽  
Sander S. Shapiro

2007 ◽  
Vol 76 (4) ◽  
pp. 601-604 ◽  
Author(s):  
R. Kozdrowski ◽  
A. Dubiel ◽  
W. Bielas ◽  
M. Dzięcioł

The objective of the study was a comparison of two protocols of goat semen cryopreservation with the use of computer-assisted semen analysis system. Twenty ejaculates obtained with electroejaculation method were assessed. Each ejaculate was divided in half and frozen according to two protocols. In protocol I semen was centrifuged in order to remove its plasma and diluted in Tris buffer extender containing glucose, citric acid and glycerol with 20% addition of egg yolk. Protocol II did not include removal of plasma and the extender contained 1.5% egg yolk. It was shown that the removal of semen plasma improved motility of goat spermatozoa following freezing/thawing with respect to the following motility indicators: motility, average path velocity, amplitude of lateral head displacement at p < 0.05, and straight velocity, straightness and linearity at p < 0.01. In conclusion, the removal of semen plasma through centrifugation improved motility properties of goat semen following the freezing/thawing procedure.


2010 ◽  
Vol 60 (232) ◽  
pp. 1087-1094
Author(s):  
J. A. Bravo ◽  
J. Montanero ◽  
R. Calero ◽  
T. J. Roy

En este trabajo se analizan las relaciones existentes entre las variables de movilidad espermática en eyaculados de moruecos de raza Île de France a lo largo de un año, obtenidas mediante análisis subjetivo y por el sistema informatizado ISAS® (Integrated Semen Analysis System). Los resultados muestran una fuerte asociación entre parámetros del mismo tipo, siendo el coeficiente de correlación r>0,80 (p


2021 ◽  
Vol 32 (1) ◽  
pp. e19506
Author(s):  
Hernán Cucho ◽  
Mitzi Gallegos ◽  
Rufina Ccoiso ◽  
Aydee Meza ◽  
Enrique Ampuero ◽  
...  

El objetivo del estudio fue determinar la existencia de subpoblaciones espermáticas según la morfometría de los espermatozoides de llama, utilizando un sistema CASA-Morph. Se colectó semen de cuatro llamas Q’ara de 4-6 años mediante el método de electroeyaculación en cuatro oportunidades por animal, con intervalos de una semana. Se determinó el volumen, movilidad total, concentración de espermatozoides, porcentaje de espermatozoides vivos y porcentaje de espermatozoides con reacción acrosomal. Los parámetros morfométricos de los espermatozoides se evaluaron utilizando el sistema CASA-Morph, Integrated Semen Analysis System (ISAS®v1). Se determinó la longitud, anchura, área, perímetro, elipticidad, elongación, regularidad y rugosidad de la cabeza del espermatozoide de llama, así como la anchura, área, distancia y ángulo de inserción de la pieza intermedia del espermatozoide. Las variables morfométricas se distribuyeron en cinco componentes principales (PCA) denominados elongación, longitud, circularidad, anchura de la pieza intermedia e inserción de la pieza intermedia, que explicaron un 81.6% de la varianza total. El análisis de clústeres determinó cuatro subpoblaciones (SP): SP1 agrupó células pequeñas con baja elongación y elipticidad (36.8%); SP2 de espermas de tamaño intermedio, tanto en la longitud y anchura de la cabeza (9.9%); SP3 de células alargadas con valores bajos de anchura de la cabeza y pieza intermedia (33.0%); y SP4 de espermatozoides con una anchura de la pieza intermedia alta (20.2%). Se hallaron diferencias significativas de subpoblaciones intra e inter animal.


1995 ◽  
Vol 10 (8) ◽  
pp. 2090-2095 ◽  
Author(s):  
J.G. Wijchman ◽  
B.T.H.M. de Wolf ◽  
S. Jager

2014 ◽  
Vol 26 (1) ◽  
pp. 142
Author(s):  
B. G. Silva ◽  
E. A. Moraes ◽  
W. C. G. Matos ◽  
C. S. Oliveira ◽  
W. D. Ferrari Junior ◽  
...  

The objective of the present study was to determine the concentration of cholesterol or cholestanol-loaded-cyclodextrin that needs to be added to goat sperm before cryopreservation to optimize its survival. The cholesterol or cholestanol loaded methyl-β-cyclodextrin was prepared as described by Moraes et al. (2010 Anim. Reprod. Sci. 118, 148–154). A working solution of the cholesterol or cholestanol-loaded cyclodextrin was prepared by adding 50 mg of each one to 1 mL of TALP at 37°C and mixing the solution briefly using a vortex mixer. Ejaculates (n = 24) from 5 bucks were used for this experiment. Sperm from each ejaculate were diluted 1 : 1 (vol : vol) in Tris diluent (200 mM Tris, 65 mM citric acid, and 55 mM glucose) and centrifuged at 800 × g for 10 min. The pellets were resuspended to a concentration of 120 × 106 sperm mL–1 in Tris and subdivided into 7 aliquots of 5 mL each (600 × 106 total sperm). Sperm were treated in 7 treatment groups that received no additive (0 mg; control) or different levels of cholesterol or cholestanol (0.75, 1.5, or 3.0 mg/120 × 106 sperm). All treatments were incubated for 15 min at room temperature and then cooled to 4°C over 2 h. The samples were diluted with Tris-egg yolk diluent containing 2% glycerol. The sperm were packaged into 0.5-cc straws and frozen in static liquid nitrogen vapor for 20 min and then straws were plunged into liquid nitrogen and stored until analysed for motility and thermal resistance test using a computer-assisted semen analysis system (CASA). Two straws from each treatment were thawed in a 37°C water bath for 30 s and extended in Tris. For the thermal resistance test, after thawing, 0.5 mL of semen from each treatment was placed in 1.5-mL tubes in a water bath at 37°C for 3 h. At 0, 60, 120, and 180 min, subsamples were evaluated for sperm total and progressive motility using a computer-assisted sperm motion analyzer. A total of 200 spermatozoa were counted in at least 5 different fields. Data were analysed using ANOVA and treatment means were separated, using the SNK test at 5% probability. Cholesterol (0.75 mg; 46.7%) and cholestanol (1.5 mg; 40.5%) produced an increase in progressive motility compared with other treatments after 1 h of incubation (P < 0.05). However, cholestanol (0.75 mg; 39.5 and 31%) was higher for total and progressive motility after 3 h of sperm incubation compared with the control (27 and 17.8%; P < 0.05), respectively. The addition of 0.75 mg of cholestanol in fresh sperm before cryopreservation improved the motility of freeze-thawed goat sperm compared with cholesterol. Therefore, adding cholestanol to goat sperm membranes improved cell cryosurvival. Supported by Fundação de Amparo à Ciência e Tecnologia de Pernambuco (FACEPE) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).


2010 ◽  
Vol 12 (6) ◽  
pp. 871-879 ◽  
Author(s):  
Giuseppe Bellastella ◽  
Trevor G. Cooper ◽  
Marina Battaglia ◽  
Anda Ströse ◽  
Inma Torres ◽  
...  

1996 ◽  
Vol 8 (2) ◽  
pp. 219 ◽  
Author(s):  
WV Holt ◽  
MJ Palomo

Sampling conditions that affect the biological validity of computer-assisted analysis of ram sperm motion were examined using a continuous real-time computerized semen analysis system (Hobson Sperm Tracker). Search radius (SR, 10 settings) and minimum track point (MTP, 10 settings) were varied factorially to evaluate their effects on the inclusion of sperm subpopulations within derived datasets. Low SR (< 12 microns) or high MTP values (> 26 frames) precluded measurements of rapidly moving cells, whereas high SR (> 17 microns) and low MTP settings (< 22 frames) led to erroneous tracking and poor data quality. Suitable settings for these set-up parameters were derived and tested for their biological consistency with four methods of preparing ram semen for computerized analysis. The preparation techniques tested were: centrifugation through sucrose-based Ficoll and Percoll media, a swim-up technique and simple dilution in Tyrode's media. The 'selective' Percoll and swim-up methods generated sperm populations with significantly higher linear velocities and a lower tendency to deviate from linear trajectories than from either the Ficoll method or dilution technique. Deleterious effects of centrifugation were evident, particularly on sperm survival in vitro over several hours. It is concluded that computer-assisted semen analysis provides useful information about the behaviour of ram spermatozoa in vitro, but the measurement conditions must be defined carefully.


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