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Abstract

The vast majority of sperm are lost from the female reproductive tract in hours following natural mating or artificial insemination in mammals. Multiple complex processes including uterine contractions, mucus barriers, and phagocytosis of sperm by neutrophils have been reported to be involved in...

Author(s)
Hong JiWon; Dicker, B. L.; Jayasinghe, S. N.; Gregorio, F. de; Tian Hong; Han DugYeo; Hudson, K. R.
Publisher
Oxford University Press, Cary, USA
Citation
Biology of Reproduction, 2017, 97, 5, pp 671-687
Abstract

Millions or billions of sperm are deposited by artificial insemination or natural mating into the cow reproductive tract but only a few arrive at the site of fertilization and only one fertilizes an oocyte. The remarkable journey that successful sperm take to reach an oocyte is long and tortuous,...

Author(s)
Miller, D. J.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, s1, pp s110-s120
Abstract

Increasing use of fixed-time artificial insemination (FTAI) in beef cattle production has presented an opportunity for the use of fresh or chilled semen as an alternative to standard cryopreserved semen. The objective of this study was to examine in vitro sperm function and pregnancy rate of...

Author(s)
Satake, N.; Edwards, S. A. A.; Tutt, D.; McGowan, M. R.; Boe-Hansen, G. B.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2018, 53, 2, pp 414-422
Abstract

Recently, the conception rates after artificial insemination have been pointed out to decline continuously. To overcome this problem, the control of frozen and thawed sperm quality is required. However, the mechanism of bovine sperm functional regulation is still largely unknown. In mammals, the...

Author(s)
Umezu, K.; Hiradate, Y.; Oikawa, T.; Ishiguro, H.; Numabe, T.; Hara, K.; Tanemura, K.
Publisher
Society for Reproduction and Development, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2016, 62, 4, pp 409-414
Abstract

Background: Cattle populations are highly amenable to the genetic mapping of male reproductive traits because longitudinal data on ejaculate quality and dense microarray-derived genotypes are available for thousands of artificial insemination bulls. Two young Nordic Red bulls delivered sperm with...

Author(s)
Iso-Touru, T.; Wurmser, C.; Venhoranta, H.; Hiltpold, M.; Savolainen, T.; Sironen, A.; Fischer, K.; Flisikowski, K.; Fries, R.; Vicente-Carrillo, A.; Alvarez-Rodriguez, M.; Nagy, S.; Mutikainen, M.; Peippo, J.; Taponen, J.; Sahana, G.; Guldbrandtsen, B.; Simonen, H.; Rodriguez-Martinez, H.; Andersson, M.; Pausch, H.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Genomics, 2019, 20, 286, pp (11 April 2019)
Abstract

Despite normal eucrasia, mating desire and semen quality, sire bulls sometimes have spermatozoa with poor freezing tolerance. This study assessed effects of the addition of linoleic acid albumin (LAA) and long-term (LT) equilibrium to frozen semen on their sperm freezing tolerance. Immediately...

Author(s)
Takahashi, T.; Itoh, R.; Nishinomiya, H.; Katoh, M.; Manabe, N.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2012, 47, 1, pp 92-97
Abstract

Fertilization involves a complex process and requires many sperm attributes for its success. There is great variation in the semen of different bulls and batch, which causes an oscillation in fertility potential. The use in TAI of semen batch with reduced fertility potential causes a great impact...

Author(s)
Celeghini, E. C. C.; Arruda, R. P. de; Florez-Rodriguez, S. A.; Santos, F. B. dos; Alves, M. B. R.; Oliveira, B. M. M. de
Publisher
Colégio Brasileiro de Reprodução Animal, Belo Horizonte, Brazil
Citation
Revista Brasileira de Reprodução Animal, 2017, 41, 1, pp 40-45
AbstractFull Text

Reactive oxygen species overgeneration as a side effect of semen cryopreservation may lead to lipid peroxidation, protein degradation, DNA fragmentation and cell death, resulting in a decrease of sperm survival and fertilisation ability. Lycopene has been proposed as a potential supplement to semen ...

Author(s)
Tvrda, E.; Mackovich, A.; Greifova, H.; Hashim, F.; Lukac, N.
Publisher
Czech Academy of Agricultural Sciences, Prague, Czech Republic
Citation
Veterinární Medicína, 2017, 62, 8, pp 429-436
AbstractFull Text

Capacitation and acrosome reaction (AR) are the prerequisites for successful fertilization by mammalian spermatozoa. Intracellular calcium (Ca2+) has a regulatory role in sperm motility, capacitation, and AR. Calmodulin (CaM) antagonists calmidazolium (CZ) and ...

Author(s)
Akter, Q. S.; Tareq, K. M. A.; Hamano, K.; Gilchrist, R. B.
Publisher
Bangladesh Animal Husbandry Association, Mymensingh, Bangladesh
Citation
Bangladesh Journal of Animal Science, 2016, 45, 3, pp 1-9
Abstract

It was determined that fetuin and hyaluronan supplementation did not provide any significant effect on the post-thaw subjective and CASA motility percentages and sperm motion characteristics, in comparison to the controls (P>0.05). Sperm acrosome and total abnormalities were similar in all...

Author(s)
Sarıözkan, S.; Bucak, M. N.; Tuncer, P. B.; Büyükleblebİcİ, S.; Eken, A.; Akay, C.
Publisher
Elsevier Inc, Orlando, USA
Citation
Cryobiology, 2015, 71, 1, pp 119-124

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