Showing papers in "Theriogenology in 2014"

TL;DR: Current CASA systems provide information important for quality assurance of semen planned for marketing, and for the understanding of the diversity of sperm responses to changes in the microenvironment in research.

TL;DR: Although numerous studies have been done using these protocols, there is still substantial need for research to improve the synchronization, efficacy, simplicity, and practical application of these protocols.

TL;DR: Well-established and reliable techniques involving superovulation, embryo recovery and transfer, cryopreservation, and IVF are utilized worldwide in hundreds, if not thousands, of commercial businesses located in many countries.

TL;DR: This review addresses the state of the art at the time of the work by Parrish et al. (Bovine in vitro fertilization with frozen thawed semen), and how later work would explain success or failure of competing procedures.

TL;DR: The results indicate that the CR of dairy cows raised in the moderate climates is highly affected by heat stress, and the mean THI was the most sensitive heat load index relating to CR.

TL;DR: The protocols that are used today have increased the numbers of transferable embryos recovered per unit time and have facilitated the application of on-farm embryo transfer programs, and they eliminate the need for detecting estrus.

TL;DR: Assisted reproductive techniques developed for cattle and buffalo, like ovum pick up (OPU), intracytoplasmic sperm injection (ICSI), and somatic cell nuclear transfer, have been transferred and adapted to buffalo and horses.

TL;DR: The first cells ever to survive low temperature exposure in the beginning of the last century, the finding of glycerol in the late 1940s and the first mouse and bovine embryos freezing in the 1970s are going through.

TL;DR: The major achievements, advances, and knowledge gained from porcine embryo in vitro production studies are discussed and the future research perspectives of this important technology are highlighted.

TL;DR: The major proteome of boar seminal plasma is described and significant associations between specific seminal plasma proteins and semen parameters will serve as the basis for determination of molecular markers of sperm function in the swine species.

TL;DR: The aim of this contribution is to provide a guide through the main established aspects and concepts of sperm surface biology and refer only to major molecular players and mechanisms involved in sperm physiology.

TL;DR: Results presented indicate that IRT shows some potential as an estrus detection aid; however, further studies investigating the potential to improve the specificity and capturing data throughout entire 21-day reproductive cycles would be worthwhile.

TL;DR: The functional role of reactive species and the cytoprotective properties of melatonin on the ovary from oxidative damage are summarized in this brief review.

TL;DR: In mares, studies with color-Doppler UI have shown that vascular perfusion of the endometrium follows the equine embryo back and forth between uterine horns and follows the expansion of the bovine allantochorion throughout each horn, which highlights the power of UI in reproduction research.

TL;DR: A historical perspective of the isolation of various types of pluripotent stem cells in domesticated animals is provided and the latest progress and limitations in the derivation and application of iPSCs are summarized.

TL;DR: The results show that these Fusarium mycotoxins can influence porcine granulosa cell proliferation and steroid production, thereby demonstrating their potential reproductive effects on swine.

TL;DR: Results indicate that supplemental P4 is capable of "rescuing" poor-quality blastocysts, presumably via the now well-described actions on the endometrium and consequent effects on uterine lumen fluid composition.

TL;DR: This review aims to present the current panorama of IVP production in small ruminants, describing important steps for its success, reporting the recent advances and also the main obstacles identified for its improvement and dissemination.

TL;DR: Endometrial expressions of MUC1 and cytokine genes differed among normal, fertile versus diseased, and subfertile dairy cows, suggesting altered gene expressions contribute to endometrial insufficiency and consequently pregnancy wastage.

TL;DR: The RTS influenced both the number of beef heifers that became pregnant during the breeding season and the time at which they become pregnant, irrespective of RTS.

TL;DR: It is found for the first time that the presence of BOEC during the four first days of the 8-days development is enough to produce these effects, suggesting an epigenetic regulation induced by BOEC in growing embryos.

TL;DR: In conclusion, testis size and function are critical for bull fertility, affected by nutrition, and readily assessed clinically.

TL;DR: Cows with endometritis have greater inflammatory cytokine concentrations in uterine flush than healthy cows, but no differences were observed in serum.

TL;DR: In this paper, the efficacy of superstimulation with Folltropin before the ovum pick-up (OPU) on IVP in lactating and non-lactating Holstein donors was evaluated.

TL;DR: The data indicate that this treatment prevents the loss of sperm motility and the rise in sperm DNA fragmentation over time, and blastocyst rate was found to be significantly higher in oocytes fertilized by treated spermatozoa, and these blastocysts harbored a significantly lower percentage of apoptotic cells.

TL;DR: The results suggest that TET1-catalyzed 5hmC may be involved in active DNA demethylation in porcine early embryos, and SCNT embryos show aberrant 5mC and5hmC expression during early porcines embryonic development.

TL;DR: Results support the hypothesis that the size of the POF alters the periovulatory endocrine milieu and acts on the uterus to alter endometrial gene expression and suggest that increased progesterone secretion of cows ovulating larger follicles is likely due to increased CL size rather than increased luteal expression of steroidogenic genes.

TL;DR: The objective of this study was to identify the relationship between the postpartum findings as risk factors for clinical endometritis (CE) and subclinical endomet arthritis (SE) and the effects of CE or SE on reproductive performance in small- and medium-sized dairy herds were investigated.

TL;DR: In this paper, the authors measured serum concentrations of insulin-like growth factor-I (IGF-I), iron, C-reactive protein (CRP), and serum amyloid A (SAA) in bitches with pyometra and explored the possible value of these variables for detection of increased morbidity.

TL;DR: It is concluded that maternal aging is associated with a heightened susceptibility to mitochondrial damage and loss in equine oocytes, which manifests during IVM, which contributes to reduced fertility in aged mares.