Results 111 to 120 of about 149,902 (201)

Hydrodynamic propulsion of human sperm [PDF]

open access: yes, 2009
The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
Green, Richard B.   +7 more
core   +1 more source

Effect of long-term storage in Safe Cell+ extender on boar sperm DNA integrity and other key sperm parameters

open access: yesActa Veterinaria Scandinavica, 2017
Background There is some controversy about the extent of changes in different sperm cell features in stored boar semen, especially regarding the potential role of the DNA fragmentation assay for assessment of sperm fertilizing ability.
Wiesław Bielas   +4 more
doaj   +1 more source

Economics of boar taint prevention without surgical castration in the pork chain [PDF]

open access: yes, 2010
An economic analyses of boar taint prevention without surgical castration is lacking. This paper explores currently feasible alternatives to surgical castration along the pork chain.
Backus, G.B.C.   +4 more
core  

Effects of different antioxidants on cryopreservation of Jinhua boar sperm

open access: yes浙江大学学报. 农业与生命科学版, 2010
To compare the effects of different antioxidant concentrations of glutathione (GSH), green tea polyphenols (GTPs), vitamin E (VE) and superoxide dismutase (SOD) on cryopreservation of Jinhua boar sperm, freezing extenders were supplemented with the GSH ...
WANG Zheng-guang   +4 more
doaj   +1 more source

Post-Meiotic Intra-Testicular Sperm Senescence in a Wild Vertebrate [PDF]

open access: yes, 2012
There is growing interest in sperm senescence, both in its underlying mechanisms and evolutionary consequences, because it can impact the evolution of numerous life history traits. Previous studies have documented various types of sperm senescence, but
Richard H. Wagner   +16 more
core   +2 more sources

Control of alkaline phosphatase activity and pH stability by taurine in liquid boar semen

open access: yesJournal of Animal Science and Technology
Alkaline phosphatase (ALP) is an enzyme present in various tissues and plays an important role in biochemical processes, by catalyzing the hydrolysis of organic phosphates and energy metabolism.
Wijesooriya Mudhiyanselage Nadeema Dissanayake   +3 more
doaj   +1 more source

Cryptic male choice: sperm allocation strategies when female quality varies [PDF]

open access: yes, 2002
Reinhold K, Kurtz J, Engqvist L. Cryptic male choice: sperm allocation strategies when female quality varies. Journal of Evolutionary Biology. 2002;15(2):201-209.We examined evolutionary stable sperm allocation and included stochastic variation in male ...
Reinhold, Klaus   +2 more
core   +1 more source

Sperm DNA fragmentation in boars is delayed or abolished by using sperm extenders

open access: yesTheriogenology, 2006
The semen quality of seven young adult boars was assessed for percentages of sperm motility, normal acrosomes, abnormal sperm, cells positive to sHOST (short Hipoosmotic Swelling Test), HPNA cells (sHOST Positive with Normal Acrosome cells) and the percentage of sperm heads, which exhibited DNA fragmentation using the Sperm Chromatin Dispersion test ...
Pérez-Llano, Begoña   +4 more
openaire   +4 more sources

Enhanced fertility estimation and novel ion channels in boar sperm [PDF]

open access: yes, 2015
Cryopreserved boar sperm have many potential advantages when used for artificial insemination (AI), including increased time for pathogen testing and ease of semen transport.
Daigneault, Bradford W.
core  

Semen quality detection using acoustic wave sensors [PDF]

open access: yes, 2011
Artificial insemination (AI) is a widely used part of the modern agricultural industry, with the number of animals inseminated globally being measured in the millions per anum.
Atherton, S
core  

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