Results 71 to 80 of about 133,000 (278)

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

Sow body condition at weaning and reproduction performance in organic piglet production [PDF]

, 2009
The objective was to investigate the variation in backfat at weaning and its relations to reproduction results in organic sow herds in Denmark. The study included eight herds and 573 sows.
A. G. Kongsted, Alonso-Spilsbury M., Andersen L., Bonde M., Grandinson K., Guy J. H., Han I. K., Heyer A., J. E. Hermansen, Kongsted A. G., Lauritsen H. B., Oldigs V. B., Reilly J. D., Rydhmer L., Tummaruk P., Wallenbeck A.   +15 more
core   +1 more source

The unbearable (financial) burdens of parenting

The British Journal of Sociology, EarlyView.
Alya Guseva
wiley   +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

Sperm Sexing in Selected Animals and Humans: Methods, Applications, and Future Prospects

Andrology, EarlyView.
ABSTRACT Background Sperm sexing is a technique that enables the selection of offspring sex by sorting spermatozoa based on their sex chromosomes. This technology has gained increasing attention due to its potential applications in both animal breeding and human‐assisted reproduction.
Domrazek Kinga, Jurka Piotr
wiley   +1 more source

Influencing factors in the pregnancy rate in obese women undergoing artificial insemination

NURE Investigación, 2013
The impact of obesity on the outcome of assisted reproduction treatments is debatable. Several studies show that obese women have worse outcomes after undergoing fertility treatment. The researches show a worse response to ovulation induction.
Carolina Sánchez-Cruzat Albertín
doaj  

Between Exclusion and Legitimacy: Identity Negotiation and Ethical Dilemmas of Chinese Lesbians in the Assisted Reproduction System

Developing World Bioethics, EarlyView.
ABSTRACT In China's current assisted reproduction system, marriage and sexual orientation serve as key entry barriers, leaving lesbians facing institutional exclusion under the dual identities of “unmarried” and “non‐heterosexual.” The marriage system, heterosexual norms, and technical regulations jointly construct the institutional structure that ...
Yuan Liu
wiley   +1 more source

Sperm storage by males causes changes in sperm phenotype and influences the reproductive fitness of males and their sons [PDF]

, 2017
Recent studies suggest that environmentally induced effects on sperm phenotype can influence offspring phenotype beyond the classic Mendelian inheritance mechanism.
Adriaenssens, Aitken, Almbro, Bonduriansky, Bonduriansky, Boschetto, Crean, Crean, Crean, Curley, El Jack, Evans, Evans, Evans, Evans, Falconer, Firman, Franco, Froman, Gasparini, Gasparini, Gasparini, Gasparini, Head, Holt, Houde, Immler, Immler, Jensen, Jones, Kilgallon, Lynch, Marshall, Orr, Parker, Perry, Pilastro, Pilastro, Pilastro, Pizzari, Poiani, R Development Core Team, Rahman, Rahman, Reinhardt, Reinhardt, Sheldon, Simmons, Simmons, Siva-Jothy, Tan, Tarin, Vasudeva, White, Zajitschek   +54 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

Effect of Different Cooling Rates on Embryo Survivability and Pregnancy Rates in Freezing Sheep Embryos

İstanbul Üniversitesi Veteriner Fakültesi Dergisi, 2016
Çalışmanın ilk bölümünde, mezbahadan sağlanan ovaryumlardan kazanılan oositler (n=2990) olgunlaştırma medyumu içerisinde 24 saat süreyle olgunlaştırıldı. Ardından, 20 saat süreyle İn Vitro Fertilizasyona (İVF) bırakıldılar. Yarıklanma gösteren embriyolar
Elif KARAMAN ÖZTÜRK, Kamber DEMİR, Ramazan ARICI, Sema BİRLER, Serhat PABUCCUOĞLU, Mithat EVECEN   +5 more
doaj   +1 more source