scholarly journals Testicle size as indicator of fertility in bulls

2014 ◽  
Vol 68 (5-6) ◽  
pp. 311-322
Author(s):  
Igor Prka ◽  
Branislava Djordjevic
Keyword(s):  
Artificial Insemination ◽  
Semen Quality ◽  
Sperm Quality ◽  
Quality Parameters ◽  
Sperm Production ◽  
Production Potential ◽  
Holstein Friesian ◽  
Selection For ◽  
One Year

Male calves from the high value parents, bull fathers and bull dams, enter the selection for artificial insemination. After laboratory tests, the calves are taken to the center for artificial insemination, and after a stay in quarantine the are moved to a test station. At the age of twelve months they are measured for assessing the value of each calf exterior. One of the measures recorded was the testicle scope. On the basis of testicle size, it is possible to predict sperm production potential. For the determination of testicle size (testicular biometry), tapes or rulers were used. The aim of this work was to investigate the possible effect of testicle size on sperm production in young bulls used for artificial insemination. For that purpose there were used the data on circumference of testicles of one year old bulls just starting production of sperm, and then compared with certain semen quality parameters such as: volume of ejaculate and concentration and percentage of alive and progressively mobile spermatozoa. The investigation included all young bulls that started production in the period from 2010. to 2012., that is 36 bulls of various breeds (Simmental, Holstein Friesian, Montafon). After the testicle scope measuring in these bulls, there were observed the parameters of the sperm quality during the following one year period. The obtained results showed that the increased testicle size was followed by the increased average ejaculate quantity, in other words: 3.7 ml in group of bulls with testicle circumference below 30 cm, to 6.7 ml in bulls whose testicle circumference was over 40 cm. Also, the results showed that there was a correlation between the increased testicle size and the increased spermatozoa concentration. The values grow to testicle scope of 36 cm, and above that they were still high but with some oscillations. When it came to relation between testicle scope and the percentage of alive and progressively mobile spermatozoa, the trend line showed their positive correlation. The percentage of rejected ejaculates varied from 72% in bulls wit testicle scope below 30 cm to 10% in bulls with testicle scope above 35 cm. On the basis of the results obtained in this work, the conclusion is that testicle size is an indicator of bull fertility; that there is a significant correlation between testicle size and ejaculate volume, and that there is a need to explore a genetic link between testicle size and the fertility of their daughters.

scholarly journals Evaluating bull fertility based on non-return method

2012 ◽  
Vol 66 (1-2) ◽  
pp. 27-40
Author(s):  
Igor Prka ◽  
Dragan Vukovic ◽  
Stevan Perkovic
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Quality Parameters ◽  
Semen Parameters ◽  
Service Period ◽  
Microscopic Evaluation ◽  
Live Sperm ◽  
Return Method ◽  
The Impact ◽  
First Time

In order to evaluate the results of reproductive cows and heifers, different parameters of fertility are used, such as the service period, insemination index, intercalving time and others, and of the breeding bulls the values obtained through non-return. An ejaculate is taken up for further processing by veterinary centres only provided it meets the prescribed quality parameters. Rating semen parameters includes a macroscopic (volume, colour, consistency, smell and pH) and a microscopic evaluation (mobility, density, percentage of live sperm and abnormal and damaged sperm). In addition to sperm quality and the fertility of the female animal, the results of the non-return method are also influenced by a number of exogenous causes (season, age, race, insemination techniques) that have no small impact on the end result of insemination - pregnancy. In order to obtain more objective results of the fertility of bulls the following tasks were undertaken, namely: 1. to calculate with the non-return method the fertility of bulls in over 10,000 cows inseminated for the first time during a period of 6 years; and 2. to analyze the impact of semen quality, season, age of cow and bull, and the bull breed on the results of fertility.

scholarly journals Variation of Semen Quality Among Three Generations (F1, F2 and F3) of Holstein Friesian Upgraded Breeding Bulls of Bangladesh

2020 ◽  
Vol 7 (3) ◽  
pp. 457-463
Author(s):  
Faruk Hossain ◽  
Md Golam Sorowar ◽  
Sharmin Akter Suma ◽  
Abdullah Al Mansur ◽  
Md Mahbubul Hoque ◽  
...  
Keyword(s):  
First Generation ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Quality Parameters ◽  
Quality Parameter ◽  
Microsoft Excel ◽  
Three Generations ◽  
Holstein Friesian ◽  
Recorded Data ◽  
Mass Activity

The experiment was conducted in a well-known private livestock research and development farm in Bangladesh to find out the variation of semen quality parameter among three generations (F1, F2 and F3) of Holstein Friesian upgraded breeding bulls. A total of 312 ejaculates were collected from 6 upgraded breeding bullsthrought the experimental year. The recorded data were summarized using Microsoft Excel 2010 and analyzed using GraphPad Prism 5 softwere. Out of the 312 ejaculates, 273 (87.50%) were found to be creamy in color followed by 26 (8.33%) and 13 (4.17%) as yellowish and watery, respectively. Generation had significant (P<0.05) effect on ejaculate volume, consistancy, mass activity, sperm concentration, initial and post freezing motility. The highest (7.389±0.19ml) and the lowest (5.156±0.13ml) volume of semen were found in third (F3) and first generation (F1), respectively. The mass activity ranges from 3.74±0.04 to 4.30±0.05. Sperm concentration and pH varied insignificantly (p>0.05) but initial motility and post freezing motility had the significant differences among the three generations. Initial motility ranges from 75.87±0.32 to 78.40±0.38 percent and the post freezing motility ranges from 50.38±0.41 to 52.16±0.43 percent. It could be concluded that most of the semen quality parameters were influenced by generation and freezing. Semen characteristics were better in F2 followed by F3 and F1 generation in upgraded Holstein Friesian bulls. Res. Agric., Livest. Fish.7(3): 457-463,  December 2020

scholarly journals Effect of whole and clarified egg yolk based extenders on post-thaw semen quality in bulls.

2021 ◽  
Author(s):  
Prosper Kamusasa ◽  
Eddington Gororo ◽  
Fungayi Primrose Chatiza
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Egg Yolk ◽  
Quality Parameters ◽  
Normal Morphology ◽  
Semen Cryopreservation ◽  
Bull Semen ◽  
Inclusion Level ◽  
Whole Egg

Abstract This study was conducted to evaluate the comparative cryoprotective effects of whole egg yolk and clarified egg yolk on post thaw sperm quality parameters and to determine the optimum clarified egg yolk inclusion level (10-20%) in semen extenders for Mashona bull semen cryopreservation. It was shown that there was a significant decrease in sperm quality variables following cryopreservation. Semen quality increased with the concentration of clarified egg yolk, indicating a positive relationship between egg yolk LDL concentration and maintenance of in vitro sperm quality. The 20% clarified egg yolk (CEY20) extender treatment gave post-thaw motility, viability and normal morphology values which were comparable to the control (20% whole egg yolk, WEY20). The 10% clarified egg yolk concentration gave the least post-thaw quality values and the greatest proportion of defective spermatozoa. This experiment found no advantage of replacing whole egg yolk with up to 15% clarified egg yolk in Mashona bull semen cryopreservation. However, 20% clarified and 20% whole egg yolk performed similarly in the maintenance of post-thaw sperm motility, viability and normal morphology.

Hydroxy-selenomethionine as an organic source of selenium in the diet improves boar reproductive performance in artificial insemination programs

2021 ◽  
Author(s):  
Ana Paula P Pavaneli ◽  
Cristian H G Martinez ◽  
Denis H Nakasone ◽  
Ana Carolina Pedrosa ◽  
Maitê V Mendonça ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Reproductive Performance ◽  
Artificial Insemination ◽  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
Dietary Treatments ◽  
Gpx Activity ◽  
Organic Source

Abstract This study aimed to compare different selenium (Se) sources in the diet on boar's semen quality and fertility. For this, 28 boars aged 8 to 28 months were fed with the following dietary treatments for 95 days: 0.3 mg Se/kg as sodium selenite (SS, n = 14) and 0.3 mg Se/kg as hydroxy-selenomethionine (OH-SeMet, n = 14). During this period, two experiments were carried out. In experiment 1, the semen of all boars was evaluated every 2 weeks. Raw semen was initially evaluated for the processing of seminal doses, which were stored at 17 °C for 72 h, followed by sperm quality assessments. Furthermore, Se concentration and glutathione peroxidase (GPx) activity were measured in the seminal plasma. In experiment 2, 728 females were inseminated weekly with seminal doses from boars of the different experimental groups to further assess in vivo fertility and litter characteristics. Results demonstrated that boars fed OH-SeMet had more Se in their seminal plasma (p &lt; 0.05), showing the greater bioavailability of the organic source in the male reproductive system. Moreover, boars fed OH-SeMet tended (p &lt; 0.10) towards a higher total sperm count in the ejaculate (66.60 vs. 56.57 × 10 9 sperm), and the number of seminal doses (22.11 vs. 18.86; 3 × 10 9 sperm/dose) when compared to those fed SS. No effect of the dietary treatments was observed on GPx activity in seminal plasma (p &gt; 0.05), as well as on raw and stored semen quality (p &gt; 0.05). Under in vivo conditions, seminal doses from boars fed OH-SeMet tended (p &lt; 0.10) towards a higher pregnancy rate at weeks 3, 5, and 8, and also resulted in a higher (p &lt; 0.05) percentage of pregnant females in the overall period (99.30 vs. 97.00). In conclusion, the replacement of SS with OH-SeMet in boars' diet can improve sperm production and results in better reproductive performance for them, bringing greater productivity and profitability to artificial insemination centers and commercial pig farms.

Effects of low-density lipoproteins extracted from different avian yolks on boar spermatozoa quality following freezing–thawing

Zygote ◽  
2012 ◽  
Vol 22 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Peng Wang ◽  
Yan-Feng Wang ◽  
Chun-Wei Wang ◽  
Shu-Hai Bu ◽  
Jian-Hong Hu ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Membrane Integrity ◽  
Egg Yolk ◽  
Quality Parameters ◽  
Low Density Lipoproteins ◽  
Low Density ◽  
Boar Sperm ◽  
Boar Semen ◽  
Avian Egg

SummaryLow-density lipoproteins (LDL) is known to protect boar sperm during freezing–thawing, but little information is known about the effects of LDL extracted from different avian egg yolks on post-thaw boar semen quality. The purpose of this study was to compare and analyze the effects of LDL at various concentrations and different species on boar sperm quality after freezing–thawing. LDL extracted from the yolk of hen egg, duck egg, quail egg, pigeon egg or ostrich egg was added to the extender at the concentrations of 0.06, 0.07, 0.08, 0.09 and 0.1 g/ml, respectively, and their effects on frozen–thawed boar sperm quality were assessed. According to all measured parameters, the results showed that sperm motility, acrosome integrity and plasma membrane integrity were 43.20%, 52.57% and 48.13%, respectively, after being frozen–thawed with 0.09 g/ml LDL extracted from pigeon egg yolk. All these quality parameters were higher than that of other groups (P < 0.05). In conclusion, our results confirmed that LDL extracted from pigeon egg yolk had the best cryoprotective effects on frozen–thawed boar sperm among all of the groups supplemented with LDL from five kinds of avian egg in extender. The optimum concentration of LDL extracted from pigeon egg in boar semen freezing extender was 0.09 g/ml.

scholarly journals Sperm distribution in the genital tract of the bitch following artificial insemination in relation to the time of ovulation

Reproduction ◽  
2004 ◽  
Vol 128 (6) ◽  
pp. 801-811 ◽  
Author(s):  
T Rijsselaere ◽  
A Van Soom ◽  
S Van Cruchten ◽  
M Coryn ◽  
K Görtz ◽  
...  
Keyword(s):  
Artificial Insemination ◽  
Genital Tract ◽  
Sperm Quality ◽  
Quality Parameters ◽  
Uterine Horn ◽  
Corpus Uteri ◽  
The Mean ◽  
Uterine Glands ◽  
Different Parts ◽  
Scanning Electron

In the present study, sperm distribution in the genital tract of the bitch following artificial insemination (AI) in relation to the time of ovulation was investigated by histology, scanning electron microscopy (SEM) and flushing. Ten bitches were inseminated intravaginally with 500 × 106spermatozoa: three dogs before ovulation, four dogs during ovulation and three dogs after ovulation. Ovariohysterectomy was performed 24 h after AI. Half of the genital tract was divided into nine segments (cervix, corpus uteri, caudal, middle and cranial uterine horn (UTH), utero–tubal junction (UTJ), isthmus, ampulla and infundibulum), which were processed for histology and SEM. The contralateral UTH and uterine tube (UT) were flushed, and several sperm characteristics were assessed. Histology revealed that the spermatozoa were mainly located in the uterine glands and at the UTJ, while very few spermatozoa were detected in the UT. Insemination during ovulation resulted in higher percentages of glands with spermatozoa in the different parts of the uterus (P< 0.05). Evaluation by SEM showed higher numbers of spermatozoa in several parts of the uterus for bitches inseminated during ovulation (P< 0.05). The mean number of spermatozoa flushed from the UTH and the UT was low. No significant differences in the evaluated sperm quality parameters were found between the flushings of the UTH and the UT. In conclusion, based on our findings, the uterine glands and the UTJ might act as sperm reservoirs in the bitch and sperm transport in the genital tract is affected by the time of AI in relation to ovulation.

scholarly journals Gross testicular morphometric parameters and sperm reserves in indigenous Ghanaian West African dwarf goats

2021 ◽  
Vol 19 (3) ◽  
pp. 233-236
Author(s):  
J. Atawalna ◽  
D. Essel-Cobbinah ◽  
P.D. Akpalu ◽  
B.O. Emikpe
Keyword(s):  
Semen Quality ◽  
Tunica Albuginea ◽  
Gonadosomatic Index ◽  
Quality Parameters ◽  
West African ◽  
Morphometric Parameters ◽  
Sperm Production ◽  
Cross Sectional ◽  
West African Dwarf ◽  
Length Width

The West African Dwarf (WAD) goat has genetic potentials that can be exploited for improved goat production. However, their testicular morphometric parameters and sperm reserves in Ghana are not well known. A cross-sectional study was conducted at the Sabtiu Musah abattoir in Kumasi, Ghana, to evaluate the gross testicular morphometric parameters and sperm reserves in 10 indigenous WAD goats. The samples were stored on an ice chest and transported to the Regional Veterinary Laboratory for analysis on the day of collection. In the laboratory, the testes and epididymis were separated by dissection and then freed of all connective tissue and the Tunica albuginea. The weight, length, width and volume of the testis were determined. A segment of testicular parenchyma was incised and homogenized in a 20 ml normal saline solution. The resulting homogenate was stored in the refrigerator overnight and a filtered aliquot used for estimating spermatid concentration and sperm reserves. The weight, length, width, volume of the testis and the gonadosomatic index were 70.09 ±14.19 gm, 7.46 ± 0.52 cm, 5.08 ± 0.62, cm, 102.40 ± 29.40 ml and 5.09 ± 0.07%, respectively. The sperm reserves per the whole testis, sperm reserves per gramme testis, Daily Sperm production (DSP), and DSP per gramme testis of Ghanaian WAD bucks were 146.0 ± 50.95, 2.2 ± 0.62, 41.01 ± 14.3 and 0.62 ± 0.17 x109 spermatozoa, respectively. Indigenous West African Draft goats have a high potential for sperm production. It is recommended that further research be conducted on the semen quality parameters of this breed.

scholarly journals Az évszak és az azonos évszakban történt ismételt mintavételek hatása holstein tenyészbikák ejakulátumának minőségi- és mennyiségi jellemzőire

2002 ◽  
pp. 33-37
Author(s):  
János Tőzsér ◽  
Miklós Mézes ◽  
József Várszegi ◽  
Ferenc Szász
Keyword(s):  
Sperm Quality ◽  
Seasonal Effects ◽  
Seasonal Effect ◽  
Sperm Cells ◽  
Sperm Production ◽  
Special Effect ◽  
Special Effects ◽  
Holstein Friesian ◽  
Multiple Analysis

This study was carried out at the Hungarian National Artificial Insemination Centre in order to evaluate the seasonal effects on the quantitative and qualitative parameters of sperm production using sperm analyser equipment. The volume of ejaculate (VE), percentage of living sperm (PLS), spermatozoa concentration (SC), motility score (MC), percentage of motile spermatozoa (PMS), speed of movement of sperm cells (SMS) and the percentage of sperm cells moving straightforward (PSMS) were collected and observed in three seasons (summer, autumn, winter) in Holstein-Friesian breeding bulls (n = 15). The sperm collection was done for three successive weeks in every season on the same day (summer: n = 41, autumn: n=39, winter: n = 42, altogether: n = 122). The same sperm samples were measured by sperm analyser equipment (HTM version 7.0, Danvers) for PMS, SMS and PSMS. The seasonal and the number of sperm collection effects were confirmed on semen characteristics by multiple analysis of variance (two ways MANOVA, Type III) using the program package of STATISTICA 4.5. The average values of VE were similar in the three seasons (summer: from 4.42 to 6.28 cm3, autumn: from 4.08 to 6.86 cm3, winter: from 5.43 to 5.71 cm3). The average values of the MC were similar in each of the three seasons (summer: from 3.66-4.00 M; autumn: from 3.66-3.77 M; winter: from 3.86-4.07 M). The summary of all effects for season (P<0.001), repeated sperm collections in the same season (P<0.05) and interaction of two traits (P<0.01) were established on the measured characteristics. The special effects (P<0.05) of a given season were calculated, excepting the VE and MC, on all of the measured characteristics. The special effect (P<0.01) of the repeated sperm collections in the same season was verified in only one case (SMS). It is not surprised at the interaction was established on the VE (P<0.001), PMS (P<0.05), and SMS (P<10.0). The results of present study suggest that seasonal effect on sperm quality of breeding bulls cannot be eliminated even at standard feeding and keeping conditions. Considering our results, we can recommend that the average values of three successive weeks in every season be used, to take advantage of seasonal effect on the quantitative and qualitative parameters of sperm production.

scholarly journals Dietary Patterns and Poor Semen Quality Risk in Men: A Cross-Sectional Study

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1162 ◽  
Author(s):  
Anna Danielewicz ◽  
Katarzyna Przybyłowicz ◽  
Mariusz Przybyłowicz
Keyword(s):  
Dietary Patterns ◽  
Semen Quality ◽  
Sperm Quality ◽  
Cross Sectional Study ◽  
Quality Parameters ◽  
Semen Parameters ◽  
Sectional Study ◽  
Cross Sectional ◽  
Progressive Motility ◽  
Increased Risk

The etiology of diminished sperm quality in about 30% of male infertility cases generally remains unexplained. Some studies have suggested that specific nutritional factors can affect semen quality. The aim of this study was to evaluate an association between dietary patterns (DPs) and the risk of abnormal semen quality parameters in men. This cross-sectional study was carried out in 114 men aged 20–55 years from Poland. Semen parameters were assessed via computer-aided semen. Diet was assessed by a food frequency questionnaire (FFQ). DPs were derived using Principal Component Analysis (PCA). Two DPs were derived: Pro-healthy and Western. After adjusting for potential confounders, the risk of abnormal progressive motility was significantly higher in the middle (OR: 2.89, 95% CI: 1.03–8.09) and upper (OR: 7.78, 95% CI: 1.52–15.06) tertiles of the Western DP. A trend for increased risk of the abnormal total count, progressive motility, and morphology (P-trend < 0.050) was found in Western DP. To conclude, the Western DP may increase the risk of abnormal semen parameters, whereas no association was found in the case of Pro-healthy DP. These findings stand in contrast to an increasing number of research findings indicating a positive relation between intake of healthy foods or diet and semen quality parameters. The results highlight the need to study whether modifications in diet and lifestyle factors improve semen quality.

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