Results 91 to 100 of about 175,648 (355)

INSL3 Expression in Leydig Cells is a Biomarker for Immunocastration in Boars: Transcriptional Evidence

Andrology, EarlyView.
ABSTRACT Background Study aimed to obtain insights into physiological responses to immunocastration in pubertal boars by evaluating effects of alternative vaccination protocols and identifying a reliable immunocastration biomarker. Objectives It was hypothesized that the timing of gonadotropin‐releasing hormone (GnRH) suppression by immunocastration ...
Nina Batorek Lukač, Martin Škrlep, Klavdija Poklukar, Petra Ferjan, Volker Stefanski, Gregor Fazarinc, Milka Vrecl   +6 more
wiley   +1 more source

Assessing the Value of Coordinated Sire Genetics in a Synchronized AI Program [PDF]

Synchronized artificial insemination was used to inseminate cows using different types of sire genetics, including low-accuracy, calving-ease, and high-accuracy. These three calf sire groups were compared to calves born to cows bred using natural service.
Haden, Kent, John, Mike, Kerley, Monty S., Parcell, Joseph L., Patterson, David J., Schaefer, Daniel   +5 more
core   +1 more source

Die »Notwendigkeit eines Vaters für das Kind« und der Zugang lesbischer Frauen zur Reproduktionsmedizin (The child’s need for a father and access to assisted reproductive technologies by lesbians) [PDF]

, 2010
This chapter provides an overview of two broad areas relating to lesbians’ use of reproductive services for family building. First, it identifies strategies used in the building of ‘planned’ lesbian families – where a lesbian couple, the genetic mother ...
Blyth, Eric
core  

The Ticking Clock: Differential Time‐Dependent Deterioration Between Washed and Thawed Sperm

Andrology, EarlyView.
ABSTRACT Background Cryopreservation is widely used in assisted reproductive technologies. While fresh sperm undergoes gradual time‐dependent deterioration, it remains unclear whether thawed sperm exhibits a more accelerated decline. Objectives To directly compare the rate of deterioration in sperm motility, vitality, and DNA fragmentation between ...
Adiel Kahana, Emily Hamilton, Noga Fuchs Weizman, Sandra E. Kleiman, Shlomit Shabat, Foad Azem, Shimi Barda   +6 more
wiley   +1 more source

Effect of time and depth of insemination on fertility of Bharat Merino sheep inseminated trans-cervical with frozen-thawed semen

Journal of Animal Science and Technology, 2014
BackgroundArtificial insemination (AI) can serve as a powerful tool to the sheep owners for making rapid genetic progress of their flock. The AI in sheep is mostly performed using fresh semen with two reasons i) lambing rate following trans-cervical AI ...
Davendra Kumar, S. Naqvi
semanticscholar   +1 more source

Pig Seminal Plasma Extracellular Vesicles Enhance Motility During Preservation of Epididymal Spermatozoa but Impair Capacitation and IVF Parameters

Andrology, EarlyView.
ABSTRACT Background Extracellular vesicles (EVs) produced by accessory sex glands play a key role in sperm functionality, influencing motility, viability, acrosome integrity, metabolic activity, and capacitation. Most studies on the effects of EVs on spermatozoa have focused on ejaculated spermatozoa, which have already been exposed to their own native
Ana Moya‐Fernández, Santa María Toledo‐Guardiola, Peter Silke, Sergio Navarro‐Serna, Carmen Matás   +4 more
wiley   +1 more source

Improved taxonomic and gene sampling advance the knowledge of deep relationships within Macrodasyida (Gastrotricha)

Cladistics, EarlyView.
Abstract Advances in Macrodasyida (Gastrotricha) phylogenetics, fuelled by new species discoveries and molecular data, are reshaping taxonomic classifications. Molecular analyses suggest polyphyly in Cephalodasyidae and Macrodasyidae, yet insufficient sampling continues to obscure precise relationships.
Agata Cesaretti, Anush Kosakyan, Francesco Saponi, M. Antonio Todaro   +3 more
wiley   +1 more source

Collection and freezing of equine epididymal spermatozoa [PDF]

, 2014
The epididymis and vas deferens store an important number of fertile spermatozoa called the extragonadal sperm reserves. These stored spermatozoa can be collected in an ultimate attempt to preserve viable spermatozoa of a critically ill or dying stallion.
Govaere, Jan, Hoogewijs, Maarten, Leemans, Bart, Roels, Kim, Van Soom, Ann, Ververs, Cyrillus   +5 more
core   +1 more source

The Heterogeneous Impact of Children on Maternal Employment: Evidence From East and West Germany

Economics of Transition and Institutional Change, EarlyView.
ABSTRACT This study investigates the causal effect of fertility on female labour market outcomes in East and West Germany. We use twin births as an exogenous variation for family size. Our results suggest a negative relationship between the number of children and maternal labour market outcomes.
Johannes Köckeis, Sven Stöwhase
wiley   +1 more source

Sperm chromatin dispersion test before sperm preparation is predictive of clinical pregnancy in cases of unexplained infertility treated with intrauterine insemination and induction with clomiphene citrate [PDF]

, 2016
Background/aims: A large proportion of men with normal sperm results as analyzed using conventional techniques have fragmented DNA in their spermatozoa.
De Croo, Ilse, De Sutter, Petra, Gerris, Jan, Van den Abbeel, Etienne, Vandekerckhove, Frank   +4 more
core   +2 more sources