Boar sperm with defective motility are discriminated in the backflow moments after insemination

Caravaca, Iván Hernández; Soriano‐Úbeda, Cristina; Matás, Carmen; Izquierdo-Rico, M. J.; García–Vázquez, Francisco Alberto

doi:10.1016/j.theriogenology.2014.10.032

Cited by 11 publications

(8 citation statements)

References 38 publications

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“…Rooibos extracts also improved SMI and PM up to 96 h of semen storage. The importance of this result could be reflected in the fact that sperm with a defective or low progressive motility are mainly found in the female backflow after AIs [ 30 , 31 ]. In other studies using rooibos aqueous extract as a drinking water in rats, Opuwari et al .…”

Section: Discussionmentioning

confidence: 99%

Rooibos (Aspalathus linearis) extract enhances boar sperm velocity up to 96 hours of semen storage

Ros-Santaella

Pintus

2017

PLoS ONE

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Rooibos (Aspalathus linearis) is a native shrub from South African fynbos and has become very popular in the last decades for its antioxidant and medicinal attributes. Several studies have shown its beneficial properties in numerous cell lines, but to date, the in vitro effects of rooibos extract on sperm cells are still unknown. In this study, boar semen was supplemented with four concentrations both of fermented and unfermented rooibos extracts during 96 h of liquid storage at 17°C. The effects of rooibos extracts on sperm velocity, membrane integrity, and acrosomal status were evaluated at 2 h, 48 h, and 96 h of semen storage. Overall our results indicate that rooibos extract enhances sperm velocity, protects the acrosome structure, and tends to preserve the membrane integrity during semen storage. Although the unfermented rooibos showed higher total polyphenol content and total antioxidant capacity than the fermented one, the latter had better effects on sperm velocity leading to, for instance, an increase of 30% in the rectilinear velocity (VSL) at 48 h compared to the control group. Taking into account the different storage times, we established a suitable range of extracts concentrations to be used in boar semen. The rooibos extract ought to be considered as a powerful and natural source of antioxidants for the preservation of boar semen.

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Section: Discussionmentioning

confidence: 99%

Rooibos (Aspalathus linearis) extract enhances boar sperm velocity up to 96 hours of semen storage

Ros-Santaella

Pintus

2017

PLoS ONE

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“…In previous reports, our group reported some degree of selection in the uterus related to sperm morphology and motility [14,15]. Moreover, several researchers have observed interindividual variations in sperm dimensions [16][17][18], suggesting their basis for competition.…”

Section: Introductionmentioning

confidence: 67%

“…Previously, our group has described how the sperm are discarded in the backflow on the basis of their morphologic and motion characteristics [14,15], but other sperm factors (e.g., membrane functionality) could be involved in sperm elimination through the backflow. In goat, dead sperm are smaller in length, width, area, and perimeter than live sperm probably because of the lost of sperm membrane functionality [37].…”

Section: Discussionmentioning

confidence: 99%

Morphometry of boar sperm head and flagellum in semen backflow after insemination

et al. 2015

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“…During the migration of spermatozoa through the female genital tract toward the fertilization site, sperm motility is essential 131. Several studies have addressed how sperm morphology and sperm velocity may be related,23445199109132 and their impact on reproductive performance 2398133.…”

Section: Assessment Of Sperm Morphometry II – Functional Aspectsmentioning

confidence: 99%

Current status and potential of morphometric sperm analysis

et al. 2016

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The spermatozoon is the most diverse cell type known and this diversity is considered to reflect differences in sperm function. How the diversity in sperm morphology arose during speciation and what role the different specializations play in sperm function, however, remain incompletely characterized. This work reviews the hypotheses proposed to explain sperm morphological evolution, with a focus on some aspects of sperm morphometric evaluation; the ability of morphometrics to predict sperm cryoresistance and male fertility is also discussed. For this, the evaluation of patterns of change of sperm head morphometry throughout a process, instead of the study of the morphometric characteristics of the sperm head at different stages, allows a better identification of the males with different sperm cryoconservation ability. These new approaches, together with more studies employing a greater number of individuals, are needed to obtain novel results concerning the role of sperm morphometry on sperm function. Future studies should aim at understanding the causes of sperm design diversity and the mechanisms that generate them, giving increased attention to other sperm structures besides the sperm head. The implementation of scientific and technological advances could benefit the simultaneous examination of sperm phenotype and sperm function, demonstrating that sperm morphometry could be a useful tool for sperm assessment.

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Boar sperm with defective motility are discriminated in the backflow moments after insemination

Cited by 11 publications

References 38 publications

Rooibos (Aspalathus linearis) extract enhances boar sperm velocity up to 96 hours of semen storage

Rooibos (Aspalathus linearis) extract enhances boar sperm velocity up to 96 hours of semen storage

Morphometry of boar sperm head and flagellum in semen backflow after insemination

Current status and potential of morphometric sperm analysis

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