Results 11 to 20 of about 134,753 (307)
Effect of age, season and sire on semen quality traits in Frieswal breeding bulls
The present study was undertaken to assess the effect of season of semen collection, age and sire on semen quality of Frieswal breeding bulls. The data on 8113 semen ejaculates of 155 bulls born to 34 Frieswal sires were utilized for the study.
S TYAGI +7 more
doaj +1 more source
Semen quality in Greenland [PDF]
To quantify semen quality in the Greenlandic population.A cross-sectional study including recently proven fertile men from four regions including nine municipalities and one settlement in Greenland.The samples were analysed for sperm cell concentrations and motility using standard methods.In total 201 semen samples were collected. The median sperm cell
Toft, Gunnar +3 more
openaire +4 more sources
Macro- and microelements in serum and seminal plasma as biomarkers for bull sperm cryotolerance
Background Wide variation in fertility rates is observed when using frozen bull semen, even when the bulls have met quality standards for semen production.
Maja Zakošek Pipan +5 more
doaj +1 more source
A comparative proteomic study of high and low semen quality seminal plasma in drakes
Semen quality is the most important indicator in evaluating drake fecundity. At present, the low semen quality has become a major factor restricting the development of artificial insemination (AI) technology in ducks. Numerous studies have indicated that
Bincheng Tang +8 more
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Association between semen collection time and semen parameters: an observational study
The process of semen collection plays a key role in the quality of semen specimens. However, the association between semen collection time and semen quality is still unclear.
Shun Bai +11 more
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Semen quality and production potential of Indian buffalo breeds
The objective of the study was to evaluate non-genetic factors on semen traits. The overall means for the semen quality traits: ejaculate volume, sperm concentration, total sperm, mass activity, initial and post thaw motility, hypoosmotic swelling test,
K G BHAVE +8 more
doaj +1 more source
Spermatozoa carries a reservoir of mRNAs regulating sperm functions and fertilizing potential. Although it is well recognized that a considerable proportion of high genetic merit breeding bulls produce poor-quality semen, the transcriptomic alterations ...
Thirumalaisamy Karuthadurai +10 more
doaj +1 more source
Semen quality of Asian men [PDF]
After the controversial report by Carlsenet al. in 1992 showing a possible decline in human semen quality over the past 50 years, many laboratories investigated their own records of semen findings that had been kept for the past decades, and a significant decrease in sperm quality was reported from some laboratories, but not others. At the beginning of
Teruaki, Iwamoto +2 more
openaire +2 more sources
Karakteristik dan Jenis Pengencer Semen Sapi Bali: Suatu Review
Bali cattle are Indonesian native cattle that are preferred because they have adaptability and reproductive efficiency capabilities. The productivity of this cow can be increased using artificial insemination.
Angelina Novita Tethool +3 more
doaj +1 more source
Environmental factors may negatively contribute to a progressive worsening of semen quality, and differences in semen quality may result from different environmental exposures (regional differences) or lifestyle differences. Heavy metals are factors with
Katarzyna Olszak-Wasik +4 more
doaj +1 more source

