Results 21 to 30 of about 81,218 (299)

Cryptic female choice favours sperm from major histocompatibility complex-dissimilar males [PDF]

, 2013
Cryptic female choice may enable polyandrous females to avoid inbreeding or bias offspring variability at key loci after mating. However, the role of these genetic benefits in cryptic female choice remains poorly understood. Female red junglefowl, Gallus
Alcaide M, Bakst MR, Burnham KP, Etches RJ, Janeway CA, Klein J, Olsson M, Parker GA, Trivers RL   +8 more
core   +1 more source

Investigation of Changes in Spermatozoon Characteristics, Chromatin Structure, and Antioxidant/Oxidant Parameters after Freeze-Thawing of Hesperidin (Vitamin P) Doses Added to Ram Semen

Life, 2022
We conducted this study to determine the potential cryopreservative effects of different hesperidin (vitamin P; H) doses on ram semen after freeze-thawing. Semen samples were obtained from Sönmez rams using an artificial vagina.
Deniz Yeni, Şükrü Güngör, Fatih Avdatek, Mehmet Fuat Gülhan, Kemal Tuna Olğaç, Muhammed Enes İnanç, Barış Denk, Umut Taşdemir   +7 more
doaj   +1 more source

The effects of oxytocin and pgf2α injections on semen quality and libido in buck [PDF]

Kafkas Universitesi Veteriner Fakültesi Dergisi, 2019
The aim of the present study was to evaluate the effects of exogenous oxytocin and PGF2α on seminal quality and libido sexualis in bucks. To investigate the role of these hormones on male fertility, semen samples from 20 Norduz bucks (3-4 years of age ...
Çiğdem ÇEBİ ŞEN, Koray TEKİN, Beste ÇİL, Ergun AKÇAY   +3 more
doaj   +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

Effects of melatonin addition to the cold storage medium on cumulus oocyte complex apoptosis, viability and in vitro maturation rates of cat oocytes [PDF]

Kafkas Universitesi Veteriner Fakültesi Dergisi, 2022
Usage of oocytes obtained from ovaries aft er long-term cold storage for in vitro embryo production is a promising tool for the protection of wildlife and endangered animal species. Mammalian oocytes are susceptible to oxidative stress with regard to the
Ramazan ARICI, Kemal AK, Serhat PABUCCUOĞLU, Sema BİRLER, Kamber DEMİR, Selin YAĞCIOĞLU, Ahmet ESER, Nur ERSOY, İdil ORUÇ, Gül BAKIRER ÖZTÜRK, Evrim KÖMÜRCÜ BAYRAK, Bilge ÖZSAİT SELÇUK, Andaç KILIÇKAP, Mithat EVECEN   +13 more
doaj   +1 more source

The effects of type III antifreeze protein and human heat shock protein 70 added to the vitrification medium of mouse embryos on in vitro embryonic development rates

Turkish Journal of Agriculture: Food Science and Technology, 2022
The effect of antifreeze protein type III (AFPIII) and human heat shock protein 70 (HHSP70), added to the vitrification medium of mouse embryos, on post-freeze/thaw in vitro embryonic growth rates and cell numbers were investigated.
Mustafa Bodu, Mehmet Bozkurt Ataman
doaj   +1 more source

The effect of intrauterine infusion of carvacrol after insemination on conception rate in repeat breeder cows subjected to progesteron based estrus synchronization protocol [PDF]

Kafkas Universitesi Veteriner Fakültesi Dergisi, 2019
Repeat breeder (RB) is one of the crucial causes of economic loss in dairy cows. The aim of this study was to determine the effects of intrauterine carvacrol administration after timed artificial insemination (TAI) on the conception rate (CR) in RB cows.
Necdet Cankat LEHİMCİOĞLU, Yavuz ÖZTÜRKLER, Savaş YILDIZ, Umut Çağın ARI   +3 more
doaj   +1 more source

Precursor A-Kinase Anchor Protein 4 as a Predictive Biomarker of Post-Thaw Semen Quality in Goats

Veterinary Sciences
The evaluation of sperm proteins has emerged as a promising approach to predicting semen quality across animal species. This study investigated the relationship between post-thaw concentrations of precursor A-kinase anchor protein 4 (proAKAP4) and ...
Ahmet Eser, Abdurrahman Alakuş, Kemal Bağcı, Aslıhan Çakır Cihangiroğlu, Selin Yağcıoğlu, Ramazan Arıcı, Kamber Demir   +6 more
doaj   +1 more source

Transgressive technologies? Strategies of discursive containment in the representation and regulation of assisted reproductive technologies in Aotearoa/New Zealand [PDF]

, 2006
Drawing on a case study of the contemporary representation and regulation of assisted reproductive technologies (ARTs) in Aotearoa/New Zealand, this article traces the cultural anxieties evident in public, political, and media discussion and debate ...
Michelle, Carolyn
core   +2 more sources

Climate‐Smart Dairy Practices: The Role of Practice Clusters in Enhancing the Performance of Dairy Farms in Kenya

Agribusiness, EarlyView.
ABSTRACT Climate variability is affecting the productivity, profitability, and resilience of smallholder dairy producers in developing countries. The adoption of climate‐smart (CS) dairy practices has been promoted to mitigate these negative effects. However, while interest in dairy CS practices is growing, empirical evidence on their adoption patterns
Mercy Mburu, Amin Mugera, John Mburu, Rose Nyikal, Oghaiki Asaah Ndambi   +4 more
wiley   +1 more source