Semen collection from mice: electroejaculation

2002 ◽  
Vol 14 (6) ◽  
pp. 363 ◽  
Author(s):  
R. T. Tecirlioglu ◽  
E. S. Hayes ◽  
A. O. Trounson
Keyword(s):  
Sperm Count ◽  
Sine Wave ◽  
Computer Assisted ◽  
Probe Type ◽  
Sound Card ◽  
Function Generator ◽  
Cba Mice ◽  
Semen Collection ◽  
Device Type ◽  
Pentobarbitone Sodium

The effects of device type (electrostimulator, function generator or computer-generated waveforms), waveform (square, triangle or sine wave), probe type (ring or strip) and anaesthetic compound (ketamine/xylazine combination or pentobarbitone sodium) were investigated on electroejaculation (EEJ) responses of C57Bl × CBA and C57Bl/6J mice. Ejaculates were analysed for total sperm count and motility variables using computer-assisted sperm analyses. Automated computer-generated waveforms delivered through a sound card were more effective and reproducible compared with waveforms generated by function generator and electrostimulator. Sine waves and triangle waves were found to be more effective in producing ejaculate than square waves. As an anaesthetic, pentobarbitone sodium tended to outperform ketamine/xylazine across waveforms and strains. Strip probes failed to produce any ejaculate regardless of the device or waveform employed. Sperm obtained by EEJ exhibited poor motility and C5Bl/6J mice had lower motility variables than C57Bl × CBA mice.

Impact of supplementing commercial rabbit pellets with fresh Moringa oleifera leaves on semen characteristics in rabbit bucks under tropical climate in Trinidad

2021 ◽  
Author(s):  
Krishna Mohan Kumar
Keyword(s):  
Sperm Motility ◽  
Moringa Oleifera ◽  
Sperm Count ◽  
Control Group ◽  
Computer Assisted ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
Moringa Oleifera Leaves ◽  
The Impact

Objective This study aimed to evaluate the impact of the dietary supplement of Moringa oleifera leaves (MOL) on semen quality and characteristics in rabbits. Methods Eighteen (n=18) breeding bucks of New Zealand white, of similar age group, were used for the study. Three feeding regimes, (i) 100% commercial rabbit pellets (CRP)-Group I (ii) 90% CRP + 10% fresh MOL on a dry matter (DM) basis – Group II and (iii) 80% CRP + 20% fresh MOL on a DM basis – Group III, were adopted and the trial continued for 21 days. After adaptation to the diet, semen was collected from each buck and subjected to evaluation using a computer-assisted semen analyser. Results In Group III, the sperm count, normal sperm morphology, and sperm motility increased (52.0%) in comparison with the control (Group I; 50.1%). The inclusion of 20% Moringa oliefera in the diet (Group III) caused a significant increase (P<0.05) in semen concentration (Control =136.2 M/mL; Group III=297.2 M/mL). There was no significant difference (P>0.05) in sperm motility and semen volume among the groups. Conclusion The results suggest that supplementing commercial rabbit pellets with 20% fresh Moringa oliefera leaves on a DM basis can improve the quality and characteristics of semen in breeding bucks.

scholarly journals Semen Parameters of Fertile Guinea Pigs (Cavia porcellus) Collected by Transrectal Electroejaculation

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 767
Author(s):  
Fernando Benavides ◽  
Peter Sutovsky ◽  
Verónica López ◽  
Chelsey Kennedy ◽  
Luisa Echevarría
Keyword(s):  
Guinea Pig ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Semen Parameters ◽  
Live Births ◽  
Qualitative And Quantitative ◽  
Livestock Species ◽  
Semen Collection ◽  
Seminal Parameter ◽  
Selection Of

The guinea pig, as a livestock species, is still developing and growing throughout Peru and neighboring countries, as reflected by its increasing export since 2000. However, the selection of proven fertile males is tedious due to the absence of seminal parameter standards and the lack of safe semen collection techniques. Thus, pregnancy detection or live births are required for males’ selection. The purpose of this study was to describe the qualitative and quantitative semen parameters of fertile guinea pig males, to set reference values, and to validate a novel electroejaculation technique for the species. Semen was collected at weekly intervals from sixteen fertile males. Four transrectal electroejaculations were performed per male with 95% successful collections, yielding 39 viable semen samples. Seminal characteristics were as follows: pH 7.0 ± 0.13; ejaculate volume 0.67 ± 0.55 mL; sperm motility 90.81 ± 6.64%; sperm concentration 36.7 ± 28.41 × 106 sperm/mL; sperm count 20.09 ± 17.56 × 106 sperm/ejaculate; percentage of abnormal morphology 18.26 ± 8.52%; and percentage ubiquitinated spermatozoa 5.57 ± 6.28%. These values will serve as a reference to detect best breeding and infertile males rapidly. The described techniques are reproducible by commercial producers.

362 STORAGE OF BOVINE SPERM FOR 20 H BETWEEN SEMEN COLLECTION AND SEXING

2010 ◽  
Vol 22 (1) ◽  
pp. 337
Author(s):  
J. L. Anema ◽  
J. K. Graham ◽  
R. W. Lenz ◽  
G. E. Seidel
Keyword(s):  
Flow Cytometry ◽  
Egg Yolk ◽  
Computer Assisted ◽  
Ph Measurements ◽  
Sperm Analysis ◽  
Bovine Sperm ◽  
Semen Collection ◽  
Dairy Bulls ◽  
And Control ◽  
Better Than

The objective of this study was to optimize bovine sperm storage for up to 20 h between semen collection and sex sorting followedby cryopreservation. Two successive ejaculates were obtained from mature dairy bulls (Holstein, n = 5; Jersey, n = 3) via artificial vagina. Treatments were then applied to the neat semen to which antibiotics were added as recommended by Certified Semen Services (Columbia, MO). Nothing further was added to the control samples until staining with Hoechst 33342 for sorting. For Treatment 1, semen was diluted 9:1 with a MOPS solution resulting in 24 mM MOPS and similarly, Treatment 2 resulted in 24 mM MOPS +2% egg yolk. A subsample of each treatment and control was sorted by flow cytometry shortly after collection, and sperm then were frozen following standard processing procedures. The other subsample was stored at 15-18°C and sorted 20 h after collection followed by cryopreservation. pH measurements were made before staining samples for sorting. Samples were evaluated post-thaw for subjective progressive and total sperm motility, by computer-assisted sperm analysis (CASA, Berkeley, CA, USA), and by flow cytometry for sperm viability using propidium iodide and SYBR-14. Treatment 1 performed better than the control (Table 1), while results for Treatment 2 were similar to the control. Second ejaculates were superior to first ejaculates. pH measurements showed that addition of MOPS kept the pH about 0.2 units higher than the control, but pH declined similarly over time in all groups. While responses for the 20 h sort were numerically lower than the 0 h sort (P > 0.1), the majority of responses were acceptable for most, but not all bulls. In conclusion, storing sperm in 24 mM MOPS was beneficial. Surprisingly, 2% egg yolk negated the beneficial effect of MOPS, possibly due to increasing osmolarity by ∼15mOsM/kg due to pH adjustment. Addition of MOPS provided better results than the control for both the 0 h and 20 h sorts. Table 1.Main effect means of semen characteristics

Effect of Panax notoginseng Extracts on Inferior Sperm Motility in vitro

1999 ◽  
Vol 27 (01) ◽  
pp. 123-128 ◽  
Author(s):  
Jung-Chou Chen ◽  
Ming-Xiong Xu ◽  
Leih-Der Chen ◽  
Yan-Nian Chen ◽  
Tsan Hung Chiu
Keyword(s):  
Sperm Motility ◽  
Sperm Count ◽  
Semen Analysis ◽  
Panax Notoginseng ◽  
World Health ◽  
Computer Assisted ◽  
Butanol Extract ◽  
The World ◽  
Health Organization

The purpose of this study was to investigate the effects of Panax notoginseng extracts on inferior sperm motility in vitro. Semen samples were collected from 23 patients with sperm motility between 20% and 40%. The sperm count was over 20 × 106/ml in accordance with the World Health Organization standard. 1.0 mg/ml and 2.0 mg/ml of Panax notoginseng extracts including aqueous extract, n-butanol extract, and polysaccharide fraction on sperm motility and progression were evaluated by computer assisted semen analysis. The results demonstrated that sperm motility as well as progression on inferior sperm motility were enhanced at 1 hour and 2 hours after incubation with all three types of extracts.

scholarly journals The Quality of Frozen-thawed Canine Semen With Respect to Semen Extender Composition and Sequence of Ejaculate Collection in Dogs

2016 ◽  
Vol 64 (1) ◽  
pp. 169-175
Author(s):  
Jiří Šichtař ◽  
Ondřej Šimoník ◽  
Petra Folková ◽  
Adéla Dokoupilová ◽  
Radko Rajmon ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Membrane Integrity ◽  
Egg Yolk ◽  
Computer Assisted ◽  
Time Interval ◽  
Sperm Analysis ◽  
Semen Collection ◽  
Movement Characteristics ◽  
Semen Extender

The aim of this study was to evaluate the effect of clarified egg yolk addition to semen extender, and the semen collection sequence on the quality of frozen-thawed semen in dogs. Semen was collected from 6 dogs in a time interval of 24 hours. As parameter of the quality of frozen-thawed (F-T) semen, the motility by computer assisted sperm analysis (CASA) and plasma membrane integrity by hypo-osmotic swelling test (HOS) were evaluated. All kinematic parameters of sperm motility were higher in F-T samples containing the whole in comparison to the clarified egg yolk. The sequence of semen collection affected sperm movement characteristics of native as well as F-T semen, but it was not possible to determine whether the fresh semen from the 1st or 2nd collection is of higher quality. All motility parameters of sperms frozen with extender containing the whole egg yolk were significantly higher in the case of the 2nd collection. The situation was not so clear in the case of clarified egg yolk addition, but the velocity values were higher in F-T samples from the 2nd collection. In contrast to proven differences in motility, the effect of the addition of clarified egg yolk and the sequence of semen collection were not projected at all on the quality of plasma membrane of canine sperms evaluated by HOS test.

Urospermia indicating ectopic ureters in breeding dogs – 3 cases

2019 ◽  
Vol 47 (02) ◽  
pp. 119-124
Author(s):  
Anne-Rose Günzel-Apel ◽  
Karola Wolf ◽  
Franziska Werhahn Beining ◽  
Anke Baumeister ◽  
Jan-Peter Bach ◽  
...  
Keyword(s):  
Sperm Motility ◽  
Semen Quality ◽  
Sperm Count ◽  
Labrador Retriever ◽  
Semen Collection ◽  
Ectopic Ureters ◽  
Breeding Soundness

AbstractAn Entlebucher Mountain Dog (57 months old, case 1), a Labrador Retriever (24 months, case 2) and an Irish Soft-Coated Wheaten Terrier (31 months old, case 3) were presented for breeding soundness evaluation to the clinic. During semen collection in all 3 dogs, the pre-secretion and the sperm-rich fraction showed normal consistency and colour, whereas the prostatic secretion (3 rd ejaculate fraction) appeared strikingly yellow. In cases 1 and 2, a severely decreased sperm motility (asthenozoospermia) and an increased amount of abnormal spermatozoa (teratozoospermia), and in case 3, a moderately decreased total sperm count (oligozoospermia) were detected. Sonographical examination revealed abnormal findings regarding the uretero-vesical junction and ectopic ureters. Therefore it is concluded that urine admixture to the 3 rd ejaculate fraction may indicate the presence of ectopic ureters and may cause impairment of semen quality and fertility. The present cases raise questions regarding urospermia concerning: 1. its incidence in dogs in general and in connection with ectopic ureters and 2. its relevance as a cause of deficient ejaculate quality and subfertility or infertility.

Transscrotal stimulation of the testes and epididymides improves urethral sperm collection in domestic cats

2021 ◽  
Vol 33 (6) ◽  
pp. 437
Author(s):  
S. Prochowska ◽  
W. Niżański
Keyword(s):  
Clinical Practice ◽  
Sperm Count ◽  
Domestic Cats ◽  
Sperm Analysis ◽  
Semen Collection ◽  
Manual Stimulation ◽  
Urethral Catheterisation ◽  
Computer Aided ◽  
Before And After ◽  
Stimulation Of

Urethral catheterisation after medetomidine administration is the method of choice for semen collection in cats, but it yields variable results. This study tested whether scrotal manual stimulation can improve urethral sperm collection in domestic cats. The study was performed on 20 male cats, from which two urethral semen samples were collected, one before and one after 2min of transscrotal finger massage of the testes and epididymides. Both sperm samples were assessed for total sperm count and motility using computer-aided sperm analysis, viability and morphology (eosin–nigrosin staining). The transscrotal manual stimulation allowed a significantly higher number of spermatozoa to be obtained (P=0.0015). Viability was similar before and after the stimulation (median 92% and 90.5%), whereas the number of motile (median 60% and 70%) and morphologically normal (median 17% and 30.5%) spermatozoa was higher in the second sample (P=0.03 and P=0.002 respectively), which confirms that transscrotal massage induced the expulsion of a fresh pool of spermatozoa into the urethra. Transscrotal stimulation of the testes and epididymides significantly improves urethral semen collection in domestic cats and can be easily introduced into clinical practice.

Design of a Functional Signal Generator Based on MAX038 and Microcontroller

2014 ◽  
Vol 915-916 ◽  
pp. 1167-1170 ◽  
Author(s):  
Hao Hu
Keyword(s):  
Power Amplifier ◽  
Sine Wave ◽  
Signal Generator ◽  
Function Generator ◽  
Triangular Wave ◽  
Square Wave ◽  
Wave Signal ◽  
Frequency Adjustment ◽  
Voltage Amplifier ◽  
Output Amplitude

Based on SCM STC89C52 and MAX038, a function signal generator for generating a frequency and amplitude can be programmed to adjust the sine wave, square wave and triangular wave signal. MAX038 function generator with a small amount of peripheral devices are responsible for generating waveforms, which then are input into the LM6361 wideband voltage amplifier and a power amplifier is output. Master STC89C52 is responsible for selecting and managing the waveform types, frequency adjustment, output amplitude adjustment, LCD, and keyboard work of each module operation.

scholarly journals Effect of Croton caudatus Geiseler Aqueous Root Extract on Reproductive and Biochemical Parameters in Male Wistar Rats

2020 ◽  
Vol 12 (3) ◽  
pp. 251-60
Author(s):  
Razif Dasiman ◽  
Mastura Abd Malek ◽  
Ebby Anuar Bahari ◽  
Fatin Nadzirah Zakaria ◽  
Nina Keterina Hashim ◽  
...  
Keyword(s):  
Biochemical Parameters ◽  
Sperm Count ◽  
Male Rats ◽  
Seminiferous Tubules ◽  
Computer Assisted ◽  
Root Extract ◽  
Rheumatic Arthritis ◽  
Male Wistar Rats ◽  
Histological Results ◽  
Aqueous Root Extract

BACKGROUND: Croton caudatus Geiseler (CCG), a local herb that empirically has been used as traditional medicine for malaria, fever, convulsions, and rheumatic arthritis. This study aimed to investigate the effect of CCG on reproductive and biochemical parameters in male Wistar rats.METHODS: Twenty-four Wistar male rats were divided randomly into four groups, which were treated with CCG aqueous root extract at the concentration of 0-16 mg/kg, via oral gavage. After 21 days of treatment, blood, sperm, and testes were harvested for analyses. Sperm parameters were evaluated using computer-assisted sperm analyser (Hamilton Thorne Sperm Analyzer), and morphometric analyses of histological changes were performed.RESULTS: CCG extract at 8 and 16 mg/kg significantly (p<0.05) increased the total sperm count, concentration, and motility; whereby, only 16 mg/kg significantly decreased the percentage of abnormal sperm morphology. Testosterone hormones levels were the highest in 4 mg/kg CCG but were slightly decreased in 8 and 16 mg/kg CCG. The histological results showed a significant increase in the germinal epithelial height, decrease of lumen size at 16 mg/kg of CCG extract. No significant changes of alanine aminotransferase (ALT) and creatinine levels in serum from all CCG extract groups. However, the aspartate aminotransferase (AST) level in 8 mg/kg CCG was elevated, and the blood urea nitrogen (BUN) level was decreased in all CCG extract groups.CONCLUSION: In conclusion, the CCG extract at 4 mg/kg has the potential to enhance spermatogenesis activity within the seminiferous tubules in rats without any hepatotoxicity and nephrotoxicity effect on the liver and kidney.KEYWORDS: Croton caudatus Geiseler, rats, spermatogenesis, seminiferous tubules, testis, testosterone

Sign in / Sign up

Export Citation Format

Share Document