Results 61 to 70 of about 149,902 (201)

Temperature Elevation during Semen Delivery Deteriorates Boar Sperm Quality by Promoting Apoptosis

open access: yesAnimals, 2023
Semen delivery practice is crucial to the efficiency of artificial insemination using high-quality boar sperm. The present study aimed to evaluate the effect of a common semen delivery method, a Styrofoam box, under elevated temperatures on boar sperm ...
Junwei Li   +8 more
doaj   +1 more source

A novel experimental design for boar sperm cryopreservation

open access: yesJournal of Animal Science, 2022
AbstractCryopreservation of sperm is a routine technology in many livestock species, but not in swine. Frozen sperm must result in acceptable conception rates and produce 11 to 12 piglets/litter to be competitive with traditional cooled semen. The development of an extender that results in high post-thaw sperm quality and acceptable litter size ...
Myles J, Shepherd, Lisa A, Herickhoff
openaire   +2 more sources

Recent development in freezing strategies of pig semen-A review

open access: yesIndian Journal of Animal Sciences, 2022
Of late studies on frozen thawed boar semen have dramatically improved boar semen cryopreservation technique, albeit the commercial application of cryopreserved boar semen has not yet been popular. Some studies claimed successful fertility/ fertilization
S K BAISHYA, R K BISWAS
doaj   +1 more source

GSTM3, but not IZUMO1, is a cryotolerance marker of boar sperm [PDF]

open access: yesJournal of Animal Science and Biotechnology, 2019
Cryopreservation is currently the most efficient method for long-term preservation of mammalian gametes and is extensively used in swine artificial insemination (AI) centres. However, it is well-known that cryopreservation procedures induce changes in the water phase in both intra and extracellular compartments, which alter the content and localisation
Marc Llavanera   +7 more
openaire   +4 more sources

Quantification of steroid hormones in free‐ranging Apennine wolf Canis lupus italicus hair samples collected post‐mortem

open access: yesWildlife Biology, EarlyView.
After decades of dramatic reductions in their populations, Italian wolves have begun recolonizing parts of their historic range. This growth in populations can lead to potential conflicts with human activities, which remain the main cause of wolf mortality.
Ilaria Troisio   +8 more
wiley   +1 more source

High throughput small RNA and transcriptome sequencing reveal capacitation-related microRNAs and mRNA in boar sperm

open access: yesBMC Genomics, 2018
Background Capacitation, a prerequisite for oocyte fertilization, is a complex process involving series of structural and functional changes in sperms such as membrane modifications, modulation of enzyme activities, and protein phosphorylation.
Yuan Li   +10 more
doaj   +1 more source

Reproductive management in pigs: emphasis on the different roles of the boar and on optimal insemination management [PDF]

open access: yes, 2009
Boars have different roles in the reproductive management in pigs. Boar contact can stimulate follicle development and thereby induce oestrus, both in gilts and sows.
Kemp, B.   +3 more
core  

Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates [PDF]

open access: yes, 2007
Engqvist L, Reinhold K. Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B.
Reinhold, Klaus   +1 more
core   +1 more source

Hyperactivation and Tyrosine Phosphorylation of Cryopreserved Stallion Spermatozoa in Relation to Conventional In Vitro Fertilization Blastocyst Production

open access: yesAndrology, EarlyView.
ABSTRACT Background Challenges in establishing clinical conventional in vitro fertilization (IVF) in horses include variation in sperm and oocyte quality, which can be affected by mare age. Extended preincubation of stallion spermatozoa has resulted in successful IVF.
Raul A. Gonzalez‐Castro   +6 more
wiley   +1 more source

Aquaglyceroporins but not orthodox aquaporins are involved in the cryotolerance of pig spermatozoa

open access: yesJournal of Animal Science and Biotechnology, 2019
Background Aquaporins (AQPs) are a family of transmembrane water channels that includes orthodox AQPs, aquaglyceroporins (GLPs) and superAQPs. AQP3, AQP7, AQP9 and AQP11 have been identified in boar sperm, and they are crucial for sperm maturation and ...
Ariadna Delgado-Bermúdez   +8 more
doaj   +1 more source

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