Semen production of the American kestrel

1977 ◽  
Vol 55 (8) ◽  
pp. 1351-1358 ◽  
Author(s):  
David M. Bird ◽  
Paul C. Laguë
Keyword(s):  
Sperm Motility ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Barometric Pressure ◽  
Weather Factors ◽  
American Kestrel ◽  
American Kestrels ◽  
Semen Volume ◽  
The Mean ◽  
Egg Fertility

In 1975, semen was collected by massage from 18 randomly selected captive male American kestrels (Falco sparverius). The period of semen production extended for 103 days, beginning on March 19, while the mean duration of semen production was 73.6 days. Under natural light, semen production began at [Formula: see text] of daily light, peaked about [Formula: see text], and decline considerably around June 21 at [Formula: see text]. Weather factors, i.e., temperature, barometric pressure, did not significantly (P > 0.05) affect semen collections or quality.The following means were calculated: semen volume, 12 μl; sperm concentration, 31 000/mm3; sperm count per ejaculate, 416 000; motility score, 78%; contamination with epithelial debris and urates, 67%; and semen colour, very pale to pale amber.The following significant (P < 0.05) correlations were found: body weight with semen volume (0.48) and sperm count per ejaculate (0.54); egg fertility with sperm count per ejaculate (0.65); semen volume with sperm count per ejaculate (0.84) and sperm motility (0.54); sperm count per ejaculate with sperm concentration (0.78); and sperm motility with sperm concentration (0.59) and sperm count per ejaculate (0.75).

scholarly journals Correlation Between Ultrasonic Testicular Volume and Seminal Fluid Analysis in Men with Infertility

2021 ◽  
Vol 3 (1) ◽  
pp. 103-107
Author(s):  
Sadiq Abu ◽  
Hadijat O. Kolade-Yunusa ◽  
Terkaa Atim ◽  
F. Ehimatie Obakeye ◽  
Nuhu K. Dakum
Keyword(s):  
Sperm Motility ◽  
Teaching Hospital ◽  
Seminal Fluid ◽  
Sperm Concentration ◽  
Testicular Volume ◽  
Seminiferous Tubules ◽  
Testicular Function ◽  
Semen Volume ◽  
Significant Difference ◽  
The Mean

Background: Infertility is a major cause of marital disharmony in Nigeria because of the high premium placed on childbearing. Unfortunately, the blame is on the woman most times in Nigeria. Seminiferous tubules comprise 80-90% of testicular mass. Thus, the testicular volume is an index of spermatogenesis. Therefore, accurate testicular volume will help in assessing testicular function if there is no obstruction. This study was conducted to evaluate the correlation between testicular volume, measured by ultrasound and conventional sperm parameters (semen volume, sperm concentration, sperm motility and sperm morphology) in men with infertility presenting to Urology Division, University of Abuja Teaching Hospital, Gwagwalada Abuja. Methodology: This was a descriptive cross sectional study, male subjects with infertility presenting to University of Abuja Teaching Hospital were recruited into the study. The testicular volume of all the subjects was measured by ultrasonography. The semen samples were collected by the process of masturbation on day five of sexual abstinence and analyzed according to WHO criteria 2010. Collated data were analyzed using SPSS version 20.0. P-value<0.05 was taken as statistically significant. Results: The average total testicular volume (TTV) of men with infertility was 19.83 ml while mean testicular volume (MTV) was 10.24 ml. There was a statistically significant difference between MTV and semen volume (r=0.391, p=0.000), and sperm concentration (r=0.639, p=0.000). There was a weak and insignificant correlation between MTV and sperm motility and MTV and morphology (r=0.216, p=0.055 and r=0.076, p=0.502) respectively. Linear regression analysis showed significant impact of MTV (P<0.001) on sperm concentration with a critical MTV of ≤10ml.0 indicating poor testicular function (severe oligospermia) Conclusion: The mean ultrasonic testicular volume in men with infertility in this study was 10.24ml and there was a significant positive correlation of MTV with semen volume and sperm concentration. Although, there was correlation of MTV with sperm motility and morphology, this was not significant. The critical mean ultrasonic testicular volume indicating poor testicular function (severe oligospermia) was found to be 10ml. This study has shown that the mean ultrasonic testicular volume can be a pointer to semen volume and sperm concentration in evaluating men with infertility.

scholarly journals From Spermiogram to Bio-Functional Sperm Parameters: When and Why Request Them?

2020 ◽  
Vol 9 (2) ◽  
pp. 406 ◽  
Author(s):  
Rosita A. Condorelli ◽  
Aldo E. Calogero ◽  
Giorgio I. Russo ◽  
Sandro La Vignera
Keyword(s):  
Normal Form ◽  
Sperm Motility ◽  
Sperm Count ◽  
Semen Analysis ◽  
Sperm Concentration ◽  
Sperm Parameters ◽  
Sperm Parameter ◽  
Progressive Motility ◽  
Semen Volume ◽  
Chromatin Compactness

The aim of this experimental study was to evaluate whether infertile patients may benefit from the evaluation of bio-functional sperm parameters in addition to the conventional semen analysis. To accomplish this, we evaluated the correlation between conventional and bio-functional sperm parameters based on their percentile distribution in search of a potential threshold of these latter that associates with conventional sperm parameter abnormalities. The study was conducted on 577 unselected patients with infertility lasting at least 12 months. We identified cut-off values according to the median of the population for mitochondrial membrane potential (MMP), number of alive spermatozoa, and chromatin abnormality. High MMP (HMMP) (≥46.25%) was associated with sperm concentration, sperm count, progressive motility, and normal form. Low MMP (LMMP) (≥36.5%) was found to be associated with semen volume, sperm concentration, total sperm count, progressive motility, total motility, and normal form. The number of alive spermatozoa (≥71.7%) was associated with sperm concentration and progressive motility whereas abnormal chromatin compactness (≥21.10%) was associated with sperm concentration, total sperm count, and progressive motility. The data would suggest that, for every increase in the percentile category of sperm concentration, the risk of finding an HMMP≤46.25 is reduced by 0.4 and by 0.66 for a total sperm count. This risk is also reduced by 0.60 for every increase in the percentile category of sperm progressive motility and by 0.71 for total sperm motility. Each increment of percentile category of the following sperm parameter was followed by a decrease in the risk of finding an LMMP≤36.5: sperm concentration 1.66, total sperm count 1.28, sperm progressive motility 1.27, total sperm motility 1.76, and normal form 1.73. Lastly, the data showed that, for every increase in the percentile category of total sperm count, the risk of finding an abnormal chromatin compactness ≤21.10 is reduced by 1.25 (1.04–1.51, p < 0.05) and an increase of total sperm motility is associated with a reduced risk by 1.44 (1.12–1.85, p < 0.05). Results suggest a correlation between bio-functional and conventional sperm parameters that impact the sperm fertilizing potential. Therefore, the evaluation of bio-functional sperm parameters by flow cytometry may be useful to explain some cases of idiopathic male infertility.

Improved sperm motility after 4 h of ejaculatory abstinence: role of accessory sex gland secretions

2019 ◽  
Vol 31 (5) ◽  
pp. 1009
Author(s):  
Dale Goss ◽  
Bashir Ayad ◽  
Gerhard van der Horst ◽  
Bongekile Skosana ◽  
Stefan S. du Plessis
Keyword(s):  
Citric Acid ◽  
Sperm Motility ◽  
Sperm Count ◽  
Semen Analysis ◽  
Sperm Concentration ◽  
Sperm Analysis ◽  
Semen Volume ◽  
Alternative Sources ◽  
Abstinence Period ◽  
Ejaculatory Abstinence

Various studies have sought to determine the typical v. optimal abstinence period after which semen samples should be collected, with many contradictory results reported. Several factors influence the semen microenvironment, and thus sperm parameters. In this study we focused on the secretions of the prostate, seminal vesicles and the epididymis. Semen samples were obtained from healthy normozoospermic males (n=16) after 4-day and 4-h periods of ejaculatory abstinence, and standard semen analysis was performed using computer-aided sperm analysis, whereas seminal plasma citric acid, neutral α-glucosidase and fructose concentrations were measured using assay kits. There were significant decreases in total sperm count (P&lt;0.001), sperm concentration (P&lt;0.05) and semen volume (P&lt;0.05) after 4h compared with 4 days ejaculatory abstinence. Furthermore, increases were observed in total sperm motility (P&lt;0.05) and sperm progressive motility (P&lt;0.01) after a 4-h abstinence period, accompanied by significant reductions in citric acid (P&lt;0.05), α-glucosidase (P&lt;0.01) and fructose (P&lt;0.01) concentrations. In addition, due to the decreased number of spermatozoa, these concentrations translated to a significant decrease in fructose (P&lt;0.05) per spermatozoon, indicating an intrinsic mechanism capitalising on alternative sources of energy for increased metabolic function and subsequent sperm motility.

Impact of Male Aging on Semen Parameters

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Arzu Yurci ◽  
Nur Dokuzeylul Gungor
Keyword(s):  
Regression Analysis ◽  
Sperm Motility ◽  
Sperm Concentration ◽  
Paternal Age ◽  
World Health ◽  
Semen Parameters ◽  
Age Group ◽  
Male Age ◽  
Semen Volume ◽  
The Mean

Aim: To investigate the effect of increasing male age on the semen parameters including semen volume, sperm concentration, and progressive sperm motility. Materials and Methods: 1038 patients who applied to our IVF clinic for semen analysis or for infertility treatment were included in the study. The participants were divided into three age categories as follows: 680 participants (65.5%) aged 22-30, 139 participants (13.4%) aged 31-45 years, and 219 participants (21.1%) aged ≥45 years. Demographic and baseline clinical characteristics were recorded. The variables considered in this study were age and the following semen parameters: volume (ml); sperm concentration (millions/ml); and progressive sperm motility A+B (%). Normal semen values were defined based on the WHO criteria (World Health Organization, 2010). Results: The mean age of the participants was 33.1(± 4.8). The mean BMI of the participants was 24.1(± 2.8). The mean semen volume was 3.3 (± 1.5), the mean semen concentration was 43.6 (± 31.7), and the mean progressive sperm motility was 43.6 (± 10.1). There was a moderate negative correlation between paternal age and semen volume (r=-0.13) and sperm motility (r=-0.32), while there was a moderate positive correlation between paternal age and sperm concentration (r=0.24). The proportion of likelihood ratio measured between semen volume, sperm concentration, sperm motility and age was found to be 1 in patients between the ages of 22-30. The 22-30 age group does not have a decreasing or increasing effect on semen volume (OR: 1), sperm concentration (OR: 1) and motility (OR: 1). Regression analysis of patients in the 31-45 age group revealed no change in semen volume (OR: 0.99, 95% CI: 0.43-2.3, p <0.9), but an increase in sperm concentration (OR: 1.74, 95% CI: 1.13-2.7, p <0.01), and decreased sperm motility (OR: 0.28, 95% CI: 0.16-0.47, p <0.00). In the regression analysis of participants over the age of 45, semen volume (OR: 0.31, 95% CI: 0.19-0.53, p <0.00) and sperm motility (OR: 0.05, 95% CI: 0.03-0.08, p <0.00) decreased with age. No change was detected in the concentration (OR: 0.87, 95% CI: 0.63- 1.2, p <0.3). Conclusion: With increasing male age, semen volume and sperm motility begin to decrease. However, a significant decrease in sperm concentration does not occur until the age of 45.

scholarly journals Evaluating the ability of semen cryopreservation of Blance Blue Belge bull cattle in Vietnam

2021 ◽  
Vol 19 (2) ◽  
pp. 237-244
Author(s):  
Nguyen Huu Duc ◽  
Pham Thu Giang ◽  
Tran Thi Binh Nguyen ◽  
Nguyen Thi Mai ◽  
Bui Dai Phong
Keyword(s):  
Sperm Motility ◽  
Sperm Concentration ◽  
Joint Stock Company ◽  
Stock Company ◽  
Cattle Breeding ◽  
Semen Cryopreservation ◽  
Semen Collection ◽  
Frozen Semen ◽  
Semen Volume ◽  
Fresh Semen

The objective of this study was to determine the semen cryopreservation capacity of BBB bulls in Hanoi-Vietnam. Research conducted on the fresh semen collected from 05 BBB bulls. Results showed that semen color was normal (milky white, ivory white, ivory yellow), semen volume ranged from 6.35 mL to 7.48 mL (P <0.05), initial motility of semen ranged from 80.53% to 82.92% (P <0.05), sperm concentration in semen  ranged from 1.02 x 109 sperms/ml to 1.12 x 109 sperms/mL (P <0.05), abnormal sperm ratio ranged from 6.45% to 8.12% (P <0.05), alive sperm ratio ranged from 76.34% to 82.97% (P <0.05), sperm motility after thawing from straw semen ranged from 71.33% to 75.92% (P<0.05). In conclusion, successfully semen collection from 05 breeding BBB bulls at Hanoi Cattle Breeding Joint Stock Company, semen samples had normal color and good quantity and quality, suitable for production of frozen semen; and semen cryopreservation of straws of the 05 bull BBB semen mentioned at -196oC, sperm motility after freezing-thawing reached the economic and technical norms of 675/2014 of the Ministry of Agriculture and Rural Development.

scholarly journals The Effect of Cyperus esculentus on Sperm Function Parameters in Prepubertal Mice as a Model for Human

2010 ◽  
Vol 7 (1) ◽  
pp. 389-393 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Body Weight ◽  
Sperm Motility ◽  
Sperm Concentration ◽  
Sperm Function ◽  
Alcoholic Extract ◽  
Cyperus Esculentus ◽  
Alcohol Extract ◽  
The Mean ◽  
Group 2 ◽  
And Control

The objective of this work was to study the effect of oral administration of Cyperus esculentus (CE) and its alcoholic extract on sperm function parameters in prepubertal mice as a model for human .The animals were divided into three groups each contains 6 animals .Group 1 was treated with 150 mg/ kg body weight /day of crude CE, group 2 was treated with same dose of alcohol extract of CE and group 3 regarded as control throughout six weeks period. The results showed a significant (p> 0.05) increase in the mean of sperm concentration ,sperm motility percent and progressive sperm motility between treated groups and control . There was no differences among groups in the mean of sperm normal morphology and sperm viability . No significant differences was recorded in the mean of body weight among groups throughout the study. The results revealed that the administration of Cyperus esculentus may enhance certain sperm characters in prepubertal mice without affecting body weight.

scholarly journals Semen quality and diversity of morphological sperm abnormalities in bulls: breed and strain effects

2019 ◽  
Vol 22 (8) ◽  
pp. 931-938
Author(s):  
M. A. Kleshchev ◽  
V. L. Petukhov ◽  
L. V. Osadchuk
Keyword(s):  
Sperm Motility ◽  
Environmental Conditions ◽  
Western Siberia ◽  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Sperm Head ◽  
Sperm Dna Fragmentation ◽  
Sperm Production ◽  
Sperm Abnormalities

At present great attention is paid to studying genetic regulation of farm animal adaptations to environmental conditions. This problem is very important due to a wide expansion of highly productive cattle breeds created in Europe and North America. However, until the present no investigation of changing semen quality in bulls of imported breeds during their adaptations to environmental conditions of Western Siberia has been conducted. The aim of this study was to investigate semen quality peculiarities and the diversity of morphological sperm abnormalities in bulls of imported and local breeds kept in the environmental conditions of the southern part of Western Siberia. We determined sperm concentration, sperm count, and rate of sperm with progressive motility and percentage of morphologically normal spermatozoa. The rate of sperm abnormalities according to Blome’s classifcation was determined too. It was found that the mean values of sperm concentration, sperm motility and percentage of morphologically normal spermatozoa in the bulls investigated were similar to those in bulls kept in European countries. Inter­breed differences in these parameters were not found. However, bulls of the Red Danish, Angler, and Simmental breeds had a higher percentage of misshapen sperm head and pyriform sperm head than bulls of the Black­White breed. An inter­strain difference in sperm motility in bulls of the Black­White breed was observed. It was found that bulls of Reflection Sovereign 198998 strain had lover sperm motility than bulls of Wis Burke Ideal 1013415 strain. No inter­strain differences in sperm production, percentage of morphologically normal spermatozoa and rate of main sperm abnormalities were found. Thus, it has been found that the environmental conditions of the southern part of Western Siberia do not seriously affect the sperm production, sperm motility or percentage of morphologically normal spermatozoa in bulls. However, the increased rate of misshapen and pyriform sperm heads in the bulls of the foreign breeds points to a need to study sperm DNA fragmentation.

scholarly journals Effects of coadministration of DHA and vitamin E on spermatogram, seminal oxidative stress, and sperm phospholipids in asthenozoospermic men: a randomized controlled trial

2020 ◽  
Vol 112 (3) ◽  
pp. 707-719 ◽  
Author(s):  
Ghazaleh Eslamian ◽  
Naser Amirjannati ◽  
Nazanin Noori ◽  
Mohammad-Reza Sadeghi ◽  
Azita Hekmatdoost
Keyword(s):  
Oxidative Stress ◽  
Vitamin E ◽  
Sperm Motility ◽  
Seminal Plasma ◽  
Sperm Count ◽  
Controlled Trial ◽  
Sperm Concentration ◽  
Endocrine Function ◽  
Semen Parameters ◽  
Double Blind

ABSTRACT Background It is unknown which compounds in spermatozoa or seminal plasma may be involved in the regulation of sperm motility. Objectives The aim of this study was to investigate the effects of DHA (22:6n–3), vitamin E, and their probable interactions in men with asthenozoospermia. Methods A factorial, randomized, double-blind, placebo-controlled trial was conducted in infertility clinics in Tehran, Iran. The participants were idiopathic asthenozoospermic men aged 20–45 y, with normal endocrine function. Their concentration of spermatozoa and percentage of morphologically normal spermatozoa were equal to or above the lower reference limits, according to the fifth edition of the WHO guideline. Out of 717 men referred to the infertility clinics, 180 asthenozoospermic men were randomly assigned to 1 of 4 groups according to stratified blocked randomization by age and sperm concentration. Participants took daily 465 mg DHA plus 600 IU vitamin E (DE), 465 mg DHA plus placebo (DP), 600 IU vitamin E plus placebo (EP), or both placebo capsules (PP) for 12 wk. Sperm characteristics, oxidative stress of seminal plasma, serum and sperm membrane fatty acids, dietary intakes, anthropometric measurements, and physical activity were measured at baseline and after 12 wk. Results After the intervention, mean ± SD sperm progressive motility was greater in the DE group (27.9 ± 2.8) than in the DP (25.7 ± 3.4), EP (26.1 ± 2.8), and PP (25.8 ± 2.6) groups (P &lt; 0.05). Sperm count (P = 0.001) and concentration (P = 0.044) increased significantly in the DE group compared with the other 3 groups, whereas other semen parameters were not significantly different between the groups after the intervention. Serum concentrations of n–3 PUFAs were significantly higher in the DE and DP groups than in the EP and PP groups. Conclusions Combined DHA and vitamin E supplements led to increased sperm motility; however, no significant changes occurred in sperm morphology and vitality in asthenozoospermic men. This trial was registered at clinicaltrials.gov as NCT01846325.

Effect of different extenders on quality of frozen-thawed boar semen

2015 ◽  
Vol 49 (6) ◽  
Author(s):  
S Frydrychová ◽  
A Lustyková ◽  
E Václavková ◽  
J Lipenský ◽  
M Rozkot
Keyword(s):  
Sperm Motility ◽  
Aspartate Aminotransferase ◽  
Sperm Concentration ◽  
Holding Time ◽  
Holding Period ◽  
Semen Volume ◽  
Significant Difference ◽  
Boar Semen ◽  
Fresh Semen

The objective of this study was to investigate the effect of using different extenders <italic>viz.</italic> Androhep, Safecell Plus and SUS during cryopreservation on quality of frozen-thawed boar semen. Semen volume, sperm motility, sperm concentration, percentage of morphologically abnormal spermatozoa, total number of spermatozoa per ejaculate and activity of the enzyme aspartate aminotransferase (AST) were assessed in fresh semen collected from 39 fertile AI boars. Semen from each boar was divided into three portions and diluted 1:1.5 in extender Androhep, Safecell Plus and SUS and keep at 17°C for 15-h holding time before cryopreservation. Then sperm was cryopreserved. Straws were thawed in a water bath at 38°C for 40s and post-thaw sperm motility with AST activity was assessed. Significant difference in post-thaw sperm motility was found between extender Androhep and Safecell Plus (P<0.05). AST activity did not differ significantly between tested extenders (P>0.05). In conclusion, the results of the study indicate that using Safecell Plus extender during holding period before cryopreservation significantly affected post-thaw sperm motility.

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