Results 21 to 30 of about 6,191,214 (311)

A Comparative Analysis of Double-Ovsynch and Ovsynch-Heat-Synch Protocols on Pregnancy Rates in Primiparous Dairy Cows [PDF]

Veterinary and Comparative Biomedical Research
Today, ovulation synchronization methods are widely used to improve fertility in dairy cows. In this regard, this research was conducted in one of the dairy herds in East Azerbaijan province, Iran. The cows were randomly divided into two groups.
Reza Ghasemian Moghadam, Afshin Davasaz Tabrizi, Arian Narouiee, Omid Mohammadpour   +3 more
doaj   +1 more source

Influence of blood metabolites and body condition score at parturition on fertility and milk yield in Holstein cows

Revista Colombiana de Ciencias Pecuarias, 2020
Background: Variables associated with body tissue mobilization place dairy cows at greater risk of reproductive failure. Objective: To investigate the association between blood metabolites and body condition score (BCS) at the beginning of lactation and ...
Edir Torres, José E. García, Francisco G. Véliz, Carlos Leyva, Ulises Macías-Cruz, Juan D. Hernández-Bustamante, Miguel Mellado   +6 more
doaj   +1 more source

Effects of semen sexing kits (HeiferplusTM and BullplusTM) supplemented to frozen-thawed bull semen on pregnancy rates, foetal sex ratios and selected reproductive parameters in cows

Veterinární Medicína, 2015
It has been claimed that artificial insemination (AI) of cows with frozen-thawed semen treated with commercially produced kits, HeiferplusTM (HP, in favour of female gender) and BullplusTM (BP, in favour of male gender), increases the birth chance of ...
G. Turk, M. Yuksel, M. Sonmez, S. Gur, S. Ozer Kaya, E. Demirci   +5 more
doaj   +1 more source

One Plus One is Better than Two: An Approach Towards a Single Blastocyst Transfer Policy for All IVF Patients

Revista Brasileira de Ginecologia e Obstetrícia, 2022
Objective It is known that the single embryo transfer (SET) is the best choice to reduce multiples and associated risks. The practice of cryopreserving all embryos for posterior transfer has been increasingly performed for in vitro fertilization (IVF ...
Pedro Felipe Magalhães Peregrino, Tatiana Carvalho de Souza Bonetti, Alecsandra Prado Gomes, Hamilton de Martin, José Maria Soares Júnior, Edmund Chada Baracat, Pedro Augusto Araújo Monteleone   +6 more
doaj   +1 more source

The effect of lactation number, milk yield and days in milk on hormonal support following insemination in repeat breeder cows [PDF]

Eurasian Journal of Veterinary Sciences, 2020
Aim: To investigate the effect of number of lactations, milk yield and days in milk on hormonal support following insemination in repeat breeder cows. Materials and Methods: 169 Holstein cows that gave birth at least once, had regular sexual cycles and ...
Hasan Alkan, Hüseyin Erdem
doaj  

Feasible Influence of G-CSF on Clinical Pregnancy Outcome in Oocyte Donation Cycles for Patients with Recurrent Implantation Failure

Medicina
Background and Objectives: The aim of our single-center cohort study was the determination of the influence of the intrauterine lavage of granulocyte colony-stimulating growth factor (G-CSF) on clinical pregnancy rate in patients with a history of ...
Nataliya Kushniruk, Anna Stastna, Tomas Fait, Tereza Lenertova   +3 more
doaj   +1 more source

Embryonic heart rate in early pregnancy

Journal of Clinical Ultrasound, 1998
Heart rates in embryos (6-8 weeks' gestation) have rarely been studied. We attempted to identify embryonic heart rates at 4 stages during 6-8 weeks' gestation and to relate our findings to fetal outcome at the end of the first trimester. We also tried to determine the lower limit of the heart rate associated with a favorable outcome for each group.We ...
Stefos, T. I., Lolis, D. E., Sotiriadis, A. J., Ziakas, G. V.   +3 more
openaire   +3 more sources

Fresh Versus Frozen Embryo Transfer in Women with Repeated Implantation Failure

Advanced Biomedical Research
Background: To compare the outcomes of fresh embryo transfer (ET) versus frozen ET (FET) in women with recurrent implantation failure (RIF). Materials and Methods: This retrospective cohort study was performed at Yazd Reproductive Sciences Institute.
Saeideh Dashti, Sahereh Arabian, Robab Davar   +2 more
doaj   +1 more source

Association between Myometrial Thickness and Assisted Reproductive Technologies Outcomes: A Prospective Cohort Study [PDF]

International Journal of Fertility and Sterility
Background: Myometrial thickness has been expected to be a prognosticator for lower uterine segment function. Anabnormal function of the uterine muscle layer can cause common and important reproductive problems.
Tahereh Madani, Nadia Jahangiri, Seyedeh Masoumeh Moosavisadat, Elaheh Mirzaagha, Saman Maroufizadeh, Shohreh Irani, Firoozeh Ahmadi   +6 more
doaj   +1 more source

A retrospective comparative study of double cleavage-stage embryo transfer versus single blastocyst in frozen-thawed cycles

Middle East Fertility Society Journal
Background This retrospective study aimed to compare the outcomes of day 3 double embryo transfer (DET) with single blastocyst transfer (SBT) during frozen embryo transfer (FET) cycles.
Yun-Hsuen Lim, Poo Keen Sim, Prashant Nadkarni   +2 more
doaj   +1 more source