نتایج جستجو برای: embryo loss
تعداد نتایج: 508497 فیلتر نتایج به سال:
The aim of the study, relationship between coagulation parameters and embryonic loss in embryo transferred (ET) cows heifers wereevaluated. animal material this study consisted 19 heif-ers on farms located East Mediterranean Agriculture Research Institute Adana. Blood samples were collected before ET application from recipient heifers. Coagulation measured included prothrombin time (PT), activa...
Infertility and subfertility are important and pervasive reproductive problems in both domestic animals and humans. The majority of embryonic loss occurs during the first three weeks of pregnancy in cattle and women due, in part, to inadequate endometrial receptivity for support of embryo implantation. To identify heifers of contrasting fertility, serial rounds of artificial insemination (AI) w...
An experiment was conducted to determine the effect of time of oviposition, generally representing different positions in the normal egg laying sequence, on egg weight loss during storage and incubation, and on fertility and fertile hatchability of eggs from mid-lay (42 wk) and old (67 wk) broiler breeders. A total of 1,800 eggs (900 eggs per flock age) were collected during 10 consecutive days...
The present study was designed to establish whether plasma pregnancy-associated glycoprotein-1 (PAG-1) measurements during the early fetal period can be associated with early fetal loss. Blood samples were obtained and ultrasound controls performed on days 35, 42, 49, 56, and 63 of gestation or until pregnancy loss from 98 lactating dairy cows. Radioimmunoassay systems were used to determine PA...
The Society for Assisted Reproductive Technology (SART) method of embryo grading is unique, simple, and widely practiced, and its use has been mandatory for SART membership programs since 2010. Developed by SART in 2006, the current embryo grading system categories, “good, fair, and poor,” are limited because they do not describe the best 1-2 embryos in the interest of keeping pace with the shi...
The problem of pregnancy loss has medico-social, scientific and practical significance. Almost 85% occur in the I trimester gestation (up to 13 weeks), 15% – II III trimesters. One causes bleeding is retrochorial hematoma (RCH) accumulation blood space due partial detachment chorionic plate from adjacent decidua a genetically normal embryo. article provides an analysis publications that highlig...
Abstract Embryonic aneuploidy from mis-segregation of chromosomes during meiosis causes pregnancy loss. Proper disjunction homologous requires the mismatch repair (MMR) genes MLH1 and MLH3 , essential in mice for fertility. Variants these can increase colorectal cancer risk, yet reproductive impacts are unclear. To determine if MLH1/3 single nucleotide polymorphisms (SNPs) human populations cou...
diethylstilbestrol (des) was widely used in the past, as the morning after contraception, but its application became extremely limited due to several complications including delayed clear cell adenocarcinoma in female infants. however, the use of des increased during the past decade for hormone replacement therapy. the aim of this study was to investigate possible teratogenicity of this synthet...
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