Single Nucleotide Polymorphism in KiSS1 gene and its association with semen quality in Bos taurus and Bos indicus bulls

2018 ◽  
Author(s):  
P. , , Divya ◽  
K. P. Ramesha ◽  
Ragini Kumari ◽  
Arun Pratap Singh ◽  
D. N. Das ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Semen Quality ◽  
Direct Sequencing ◽  
Bos Indicus ◽  
Sperm Concentration ◽  
Quality Parameters ◽  
Coding Regions ◽  
Acrosome Integrity ◽  
Live Sperm

Selection of high fertile bulls with the help of marker assisted selection has gained importance in recent years. The low heritability of fertility traits hampers improvement of these traits by conventional selection based on phenotypic records. No information is available on the role of SNPs in KiSS1 gene in cattle on semen quality parameters in bovines. KiSS1 genes code for Kisspeptin, which are essential upstream regulators of neurons secreting gonadotropin-releasing hormone and play crucial role in reproduction.The coding regions along with exon-intron boundaries of KiSS1 gene, was characterized using PCR-SSCP method and direct sequencing. Two genotypes were observed which were represented as SSCP pattern 1 and pattern 2 and found to carry one SNPs (T153C) and one insertion of G at 291_292bp. The bulls with pattern 2 were heterozygous with respect to the transition T153C and pattern1 bulls were homozygous with TT genotype. The transition was predicted to cause amino acid change from Valine to Alanine. The frequency of bulls with pattern1 and pattern 2 were 0.67 and 0.33 in 67 Holstein Friesian bulls and 0.73 and 0.27 in 13 Khillari bulls. The association study of genotypes with semen quality parameters revealed significant association of genotypes with acrosome integrity in fresh semen (P less than 0.05) and no association with sperm concentration, volume per ejaculate, percent live sperm and Hypo Osmotic Swelling Test (HOST) with higher acrosome integrity in bulls with pattern2. Upon validation of the results in larger population and identifying the exact role of the novel SNP T153C and insertion of G at 291_292bp, they could be incorporated in selection programme for improving fertility in bulls.as markers for acrosome integrity in cattle.

scholarly journals Influence of Non-Genetic Factors on Semen Quality Parameters in Crossbred Jersey (Bos taurus x Bos indicus) Bulls

2018 ◽  
Vol 7 (04) ◽  
pp. 2994-3004
Author(s):  
Alagappan Gopinathan ◽  
Salem Nagalingam Sivaselvam ◽  
Sarojini Kanniappan Karthickeyan ◽  
Ragothaman Venkataramanan
Keyword(s):  
Genetic Factors ◽  
Bos Taurus ◽  
Semen Quality ◽  
Bos Indicus ◽  
Quality Parameters

scholarly journals Effect of Age and Frequency of Collection on Quality of Jersey Bulls Semen at National Livestock Breeding Center (NLBC), Nepal

2019 ◽  
Vol 7 (1) ◽  
pp. 88-95 ◽  
Author(s):  
S. Sankhi ◽  
K.R. Sapkota ◽  
B. Regmi
Keyword(s):  
Semen Quality ◽  
Sperm Concentration ◽  
Quality Parameters ◽  
Bull Semen ◽  
Livestock Breeding ◽  
Abnormal Sperm ◽  
Breeding Center ◽  
Live Sperm ◽  
Level Of Significance ◽  
Effect Of Age

Objective: To determine the effect of age and frequency of collection on quality parameters of Jersey bull semen at National Livestock Breeding Center (NLBC), Pokhara. Materials and Methodology: Nine Jersey bulls were selected randomly from NLBC. To obtain the effect of age, six bulls of three different age interval (3-4, 5-7 and 8-9 years) were selected randomly. Remaining three bulls were used to determine the effect of frequency of collection on semen quality. Studies were conducted for three months (Nov/Dec to Dec/Jan, 2016). Semen quality was analyzed using CASA system and SMILE software. ANOVA and paired t- tests were applied to find out level of significance. All the statistical analyses were done using SPSS 17.0 Results: Sperm concentration, post- thaw motility, live sperm, and abnormal sperm were significantly affected by the age of the bulls. Semen quality was found superior in the bulls belonging to 5-7 years of age intervals. Significantly higher value for semen volume, sperm concentration and post- thaw motility was obtained on second collection (P<0.05). However, volume initial motility, pre-filling motility, live sperm and abnormal sperm percentage did not differ significantly among different age intervals and between the frequencies of collection. Conclusion: Different quality parameters of semen like volume, concentration, initial motility, pre-filling motility, post thaw motility, live and normal spermatozoa percentages were higher in 5-7 years old bulls and in second collection of semen. Int. J. Appl. Sci. Biotechnol. Vol 7(1): 88-95

scholarly journals Effect of Age and Frequency of Collection in Quality of Jersey Bulls Semen at National Livestock Breeding Center, Nepal

2018 ◽  
Vol 35 ◽  
pp. 9-22
Author(s):  
S. Sankhi ◽  
K.R. Sapkota ◽  
B. Regmi
Keyword(s):  
Semen Quality ◽  
Sperm Concentration ◽  
Quality Parameters ◽  
Bull Semen ◽  
Livestock Breeding ◽  
Abnormal Sperm ◽  
Breeding Center ◽  
Live Sperm ◽  
Level Of Significance ◽  
Effect Of Age

The present study was undertaken to determine the effect of age and frequency of collection on quality parameters of Jersey bull semen at National Livestock Breeding Center (NLBC), Pokhara, Kaski district. Nine Jersey bulls were selected randomly from NLBC. To obtain the effect of age, six bulls of three different age interval (3- 4, 5-7 and 8-9 years) were selected randomly. Remaining three bulls were used to determine the effect of frequency of collection on semen quality. Studies were conducted for three months (Nov/Dec to Dec/Jan 2017). Semen quality was analyzed using CASA system and SMILE software. ANOVA and paired t- tests were applied to find out level of significance. All the statistical analyses were done using SPSS 17.0. Sperm concentration (0.551 ±0.004 to 1.084 ± 0.014x109), post- thaw motility (42.44±0.11 to 51.72±0.03 %), live sperm (45.62 ± 0.13 to 51.23±0.15 %), and abnormal sperm (11.57±0.12 to 19.59±0.24%) were significantly affected by the age of the bulls. Semen quality was found superior in the bulls belonging to 5-7 years of age intervals. On the other hand, volume (3.98±0.09 to 6.72±0.06 ml), initial motility (72.68±0.02 to 78.64±0.15 %) and pre-filling motility (71.34±0.17 to 77.62±0.02 %) did not differ significantly among different age intervals. Significantly, higher value for semen volume (3.98±0.12 to 6.02±0.14 ml), sperm concentration (0.572±0.119 to 1.095±0.015) and post- thaw motility (40.34±0.21 to 48.54±0.06% was obtained on second collection. However, initial motility (70.58±0.06 to 75.64±0.13 %), prefilling motility (68.11±0.12 to 71.62±0.02 %), live sperm (53.27±0.54 to 56.17±0.02 %) and abnormal sperm (12.31±0.12 to 14.3±0.47 %) did not differ significantly between the frequencies of collection. Different quality parameters of semen like volume, concentration, initial motility, pre-filling motility, post thaw motility, live and normal spermatozoa percentage were higher in 5-7 years old bulls and in second collection of semen.

Sexual Behavior and its Relationship with Semen QualityParameters in Jaffrabadi Breeding Bulls

2019 ◽  
Vol 15 (01) ◽  
pp. 57-60
Author(s):  
J K Chaudhary ◽  
G B Solanki ◽  
H P Vijyeta ◽  
P M Gamit ◽  
K S Murthy
Keyword(s):  
Sexual Behavior ◽  
Sperm Motility ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Quality Parameters ◽  
Mating Ability ◽  
Mean Values ◽  
Semen Volume ◽  
Mass Activity ◽  
Live Sperm

The present study was carried out on 80 ejaculates, 20 each from four healthy Jaffrabadi breeding bulls to see the relationship betweensexual behavior and semen quality parameters. The results depicted that the overall mean values of libido score, mating ability score andsexual libido score between bulls. The overall color of semen ranged from thin white to very thick creamy. The overall values for semen volume(ml), pH, sperm concentration (million/mL), mass activity, individual sperm motility (%) and live spermatozoa (%) were 2.99 ± 0.12, 6.80 ± 0.01, 1439.68 ± 48.46, 3.94 ± 0.03, 89.51 ± 0.21 and 95.00 ± 0.19, respectively. The values for semen volume, sperm concentration,mass activity (%) and live sperm (%) differed significantly (p less than 0.05) between bulls. There were significant positive correlations (p LESS THAN 0.01)of libido with mating ability, sexual behavior score and ejaculate volume of semen (r = 0.37 to 0.87), while a negative correlation wasfound with sperm concentration (-0.30). Mating ability was significantly (p less than 0.01) correlated with sexual behavior score and ejaculatevolume (0.78, 0.67), and sexual behavior was correlated with semen volume (0.84). Sperm concentration was significantly (p less than 0.05 correlated with mass activity (0.29), while individual sperm motility was positively (p less than 0.05) correlated with live sperm percentage (0.25).Correlations of libido, reflected the importance of sexual behavior of Jaffrabadi bulls in predicting their future utility as a proficient breeder under AI program.

scholarly journals Influence of Collection Frequency on Boar Ejaculate Quality Parameters

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Stoja Jotanović ◽  
Milorad Sarajlić ◽  
Nenad Stojanović ◽  
Đorđe Savić ◽  
Ivan Stančić ◽  
...  
Keyword(s):  
Sperm Motility ◽  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Quality Standards ◽  
Quality Parameters ◽  
Progressive Motility ◽  
Boar Semen ◽  
Live Sperm

The aim of study was to examine the effect of the boar ejaculate collection frequency on the parameters of its quality. The research covered a three-year period, and four most common boar breeds in our area. A total of 1705 ejaculates were taken from Yorkshire boars, 1693 ejaculates from Landrace boars, 1106 ejaculates from Pietrain boars and 669 ejaculates from Duroc boars. Within each breed, groups were formed according to the frequency of ejaculate taking (once, twice, three, four, five, or six times a month). Evaluation of ejaculate quality was performed in a reprocentre laboratory, according to their quality standards. Quality parameters that have been determined were the volume of ejaculate, sperm concentration, progressive sperm motility, live sperm count, the number of doses per ejaculate and the overall assessment of ejaculate. Results of this study show that the volume and progressive motility increase with the increase of frequency in ejaculate taking, while the sperm concentration drops, except for the Pietrain boars. The best results were observed in ejaculates collected 5-6 times during the month. The highest mean volume of ejaculate was found in the Landrace boars (292.22 ml), in ejaculate taking frequency of five times per month. The highest average progressive sperm motility was 92% in the Yorkshire boars, on collection frequency of six times a month, while the highest concentration of spermatozoa was found in the Duroc boars in collection frequency of one taking per month (447.32 mil/ml). The results of this study indicate that the frequency of ejaculate taking affects the boar semen quality parameters.

Differences between reproductive traits in beef bulls used for multiple-sire breeding under range conditions

2014 ◽  
Vol 94 (4) ◽  
pp. 647-652
Author(s):  
C. C. Brauner ◽  
L. M. Menezes ◽  
J. S. Lemes ◽  
M. A. Pimentel
Keyword(s):  
Bos Taurus ◽  
Semen Quality ◽  
Bos Indicus ◽  
Age Groups ◽  
Sperm Concentration ◽  
Reproductive Traits ◽  
Linear Effect ◽  
Spermatozoa Motility ◽  
Scrotal Circumference ◽  
Beef Bulls

Brauner, C. C., Menezes, L. M., Lemes, J. S. and Pimentel, M. A. 2014. Differences between reproductive traits in beef bulls used for multiple-sire breeding under range conditions. Can. J. Anim. Sci. 94: 647–652. The aim of this study was to evaluate the reproductive traits (scrotal circumference and semen quality) of different breeds of beef bulls used for multiple-sire breeding under range conditions, as well as to verify the relation between four sperm concentration scores and the reproductive traits of beef bulls. Two hundred and one bulls of three different breeds (Angus, Nelore and Brangus) and three different age groups (18, 24 and 36 mo old) were evaluated. Angus showed better (P>0.05) reproductive traits than Brangus and Nelore bulls, in which scrotal circumference, mass motility spermatozoa, motility spermatozoa, as well as spermatic vigor were greater than those of other breeds. Two-year-old bulls demonstrated better reproductive traits as compared with the other age groups. The sperm concentration score had a linear effect (P<0.01) on all reproductive traits evaluated, and the same evidence was also detected for body weight. It was concluded that genetic groups should be considered differently for multiple-sire breeding under range conditions, especially because Bos taurus and Bos indicus have significant reproductive trait differences. Moreover, the sperm concentration score can be used as an auxiliary method of semen quality in beef bulls, having a positive relation with other breeding soundness evaluation traits.

QUALITY TRAITS OF FRESH, REFRIGERATED AND CRYOPRESERVED BUFFALO BULL SEMEN AND THEIR INTERRELATIONSHIPS

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
A.J. Dhami ◽  
D.V. Chaudhari ◽  
Orin Varghese
Keyword(s):  
Semen Quality ◽  
Sperm Concentration ◽  
Membrane Integrity ◽  
Quality Parameters ◽  
Mean Values ◽  
Bull Semen ◽  
Artificial Breeding ◽  
The Mean ◽  
Live Sperm ◽  
C 30

A study was carried out on semen ejaculates (40) of five healthy Surti buffalo bulls during favourable breeding season. The ejaculates with >70% IM were diluted @ 100 million sperms/ml in Tris-fructoseegg yolk-glycerol (TFYG) diluent supplemented with L-cysteine @ 1 mg/ml, and examined for quality parameters such as sperm progressive motility, viability, morphology, acrosomal and plasma membrane integrity. A part of the extended semen was preserved at 5°C and another was processed for ultra-low temperature (-196°C) preservation in LN2 using biofreezer after filled in French mini straws. The mean values of ejaculate volume, sperm concentration, mass activity (0-5 score), individual sperm motility, live sperm, abnormal sperm, intact acrosome and HOS reactive sperms observed in fresh semen were 3.04±0.11 ml, 963.05±50.97 million/ml, 2.97±0.06, 75.00±0.69 %, 88.22 ±0.48 %, 4.40±0.26 %, 93.67±0.31 % and 89.17±0.57 %, respectively. Just after dilution the percentages of progressively motile, live & abnormal sperms, intact acrosomes and HOS reactive sperms were 80.51±0.65, 85.95±0.65, 4.92±2.20, 91.00±2.30, 85.72±0.67, respectively. The corresponding values after 48 hrs of refrigeration (5°C) were 61.75±0.85, 67.85±0.85, 6.45±0.27, 89.05±0.32, 67.30±0.96%, the values at pre-freeze stage (after equilibration) were 72.62±0.69, 78.97±0.93, 5.45±0.25, 90.90±0.35, 78.12±0.79% and at post-thaw stage (37°C/30 sec) 46.50±0.72, 52.97±0.79, 7.10±0.26, 85.73±0.18, 51.62 ±0.82%, respectively. The mean motile spermatozoa observed after 1, 2 and 3 h of post-thaw incubation at 37°C in water bath were 32.75±0.82, 18.88 ±0.70 and 8.88±0.66% (P<0.01), respectively. The semen quality parameters, fresh and cryopreserved were acceptable for artificial breeding use. The seminal traits in initial, 48 hrs refrigerated, pre-freeze and post-thawed samples revealed significant (p<0.01) interrelationships (r = 0.44 to 0.84) between progressive motile sperm, live sperm and HOST reactive sperm directing more emphasis on these quality parameters for better semen evaluation.

P–430 Male fertility preservation: is there a role for cancer-induced inflammation that affects semen quality in oncological patients?

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
C Omes ◽  
V Tomasoni ◽  
R Bassani ◽  
V Amico ◽  
R E Nappi
Keyword(s):  
Oxidative Stress ◽  
Fertility Preservation ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Semen Parameters ◽  
Cancer Type ◽  
Oncological Patients ◽  
Inflammatory State ◽  
Hematological Values

Abstract Study question What is the cause of semen quality impairment in oncological patients during fertility preservation programs? The cancer type and stadiation or the resulting inflammatory state? Summary answer The inflammatory state seems to be related to the decrease of sperm concentration, motility, morphology and viability due to the worsening of oxidative stress microenvironment. What is known already Fertility preservation acquired a great importance in the last decades due to increase survival of oncological patients, boost of diagnosis under 40 years and postponement of paternal age. At the time of cryopreservation, only one third of these males are normozoospermic. Tumor itself or other factors, added to psychological reasons, may be involved but there is no clear evidence. An imbalance of ROS (reactive oxygen species) in semen can compromise its quality. However, the correlation between cancer-related generalized stress state and fertility is poorly investigated. Inflammatory conditions induced by infections and pathologies, including cancer, increase ROS. Study design, size, duration Retrospective observational analysis was performed on 45 patients (29.0 ± 6.9 yrs) recruited during their fertility preservation program between 2016 and 2019 with written consent on use of their clinical data for research purpose. Patients presented several oncological diagnoses. Semen samples obtained from multiple collections (N = 58) were analyzed before applying standard freezing protocol. Data on semen parameters, inflammatory indices, hematological values and type/stage of tumors were collected. No exclusion criteria were applied. Participants/materials, setting, methods Routine semen analysis was performed according to the WHO standards. Sperm concentration and motility were evaluated on Makler Chamber, whereas eosin stain and Diff-quick slides were used for viability and morphology, respectively. Lymphoma was present in 72% of cases, leukemia in 8%, seminoma in 7% and other cancers in 13%. Correlations (Pearson/Spearman tests) among principal semen parameters and hematological values (leukocytes, erythrocytes, hemoglobin, RDW, albumin, etc.) were calculated with a P-value &lt;0.05 considered statistically significant. Main results and the role of chance The majority of semen samples showed a severe impairment, with one or more parameters under lower reference limits (WHO): 48.3% had sperm concentration under 15 millions/ml, 43.1% had a progressive motility under 32%, 41.4% had viability under 58% and 91.4% had abnormal morphology (under 4%). The role of potential inflammatory state was analyzed by correlating semen parameters and some hematological values. No correlation was found with cancer type. Negative association resulted between progressive motility (%PR) and leukocytes (p = 0.041) or RDW% (p = 0.015), but positive one with albumin (p = 0.012). Even sperm count, total motility (%PR+NP) and morphology were significantly correlated to RDW% (p = 0.003, p = 0.032, p = 0.034, respectively). These findings suggest a possible role of inflammation and ROS related generation in semen quality impairment. Indeed, albumin exerts a protective action, but leukocytes are known to cause ROS increase. Cancer-induced oxidative stress state may alter red blood cells homeostasis and vitality and increase erythrocytes turnover resulting in high RDW values. It is likely semen is worse when blood values indicate more severe cancer-induced inflammatory condition. Limitations, reasons for caution Significant correlations with type/stage of cancer were not found due to small number of each diagnosis, in spite our study considered 3 years of patients inclusion. Moreover, we lack to analyze the same patient before the cancer onset to avoid the influence of inflammatory state generated by the tumor itself. Wider implications of the findings: Understanding the influence of cancer-induced inflammatory state on semen quality could increase the awareness that clinicians should direct patient to the fertility preservation as soon as possible, even if diagnosis is still ongoing. It should be evaluated whether offering specific treatments may reduce oxidative stress conditions. Trial registration number Not applicable

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

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