Showing papers in "Theriogenology in 2006"

TL;DR: Suggestions for common postpartum uterine diseases are suggested, which can be readily adopted by researchers and veterinarians.

TL;DR: To clarify the importance of the contribution of the oocyte to the embryo quality, it is important to define more precisely the different types of competence expressed by oocytes.

TL;DR: In an attempt to explain some of the changes in reproductive physiology caused by high milk production a model of elevated steroid metabolism in lactating dairy cows is presented and a central role for elevated steroid metabolites in lactation-induced reproductive changes seems likely.

TL;DR: The term 'abnormal offspring syndrome (AOS)' is introduced and a classification system of developmental outcomes is proposed to facilitate research efforts on the mechanisms of the various abnormal phenotypes.

TL;DR: The integrity of sperm DNA can be measured at three different levels by assessing the degree of DNA-protamine condensation, the incidence of breaks and nicks in the DNA and the frequency of fragmentation of the nuclei into sub-haploid apoptotic bodies.

TL;DR: Current data suggest that intracytoplasmic sperm injection (ICSI) may help overcome the diminished pregnancy prognosis with high DFI over the other ART or natural methods.

TL;DR: In this article, the authors characterize strategies to prevent cryoinjuries, summarize the development of vitrification, overview its recent achievements, and provide a perspective about possible application, and strongly believe that the future of mammalian oocyte and embryo cryopreservation will be mainly based on vitrification.

TL;DR: The current literature on selected areas of PRRS known to be important to the topic of pathogen elimination are reviewed, including etiology, clinical manifestations, direct and indirect routes of transmission, as well as discuss measures for disease control, prevention and eradication.

TL;DR: This review reexamines parameters needed for optimization of flow cytometric sexing mammalian sperm and updates the current status of sperm sexing for various species where this technology is currently being applied.

TL;DR: Current literature is reviewed, with emphasis on the bovine model, demonstrating evidence for an effect of post fertilization culture environment on embryo gene expression and quality.

TL;DR: The objectives are to characterize physiological periods limiting reproductive performance and to describe integrated management strategies to improve pregnancy rates in targeted populations of lactating dairy cows.

TL;DR: There was a higher level of lipid peroxidation (ROS) in semen of Simmental versus Nelore bulls; apparently the higher GPx activity in Simmental bulls was insufficient to avoid damage that occurred concurrent with increased ROS production during the summer.

TL;DR: This review will discuss surgical principles, complications, outcomes, as well as relevant current literature associated with each of the techniques of surgical sterilization.

TL;DR: A review of its etiology, methods of transmission, pathophysiology, clinical signs, diagnosis, serology and culture, pathology, treatment options, and regulated prevention featured by Georgia, are presented.

TL;DR: Hyperglycemia has an adverse effect in sperm concentration and motility via changes in energy production and free radical management and both animal models present some metabolic adaptations, increasing the efficiency of mitochondrial ATP production, in order to circumvent the deleterious effects promoted by the disease.

TL;DR: The results indicate that heat stress can compromise the success of gestation during the peri-implantation period, such that high temperature-humidity index values for the period 21-30 days of gestation are a risk factor for subsequent early fetal loss.

TL;DR: This review concerns strategies for modifying oocytes and embryos to increase cryosurvival, and reduces cytoplasmic lipid content of embryos with phenazine ethosulfate (PES), a compound that oxidizes NADPH, even improved cryotolerance of bovine embryos cultured in the absence of serum.

TL;DR: The aim of the present experiment was to study the effect of fish oil and Vitamin E rich diets on semen production, sperm functions and composition in broiler breeders, and significant interactions between the two treatments were found for some parameters.

TL;DR: Non-surgical methods to control reproduction including intravaginal and intrauterine devices and ultrasound testicular ablation and immunocontraception are employed.

TL;DR: Differences in response to superovulation, fertilization, and number of live born produced after embryo transfer were observed between strains, substantiating the influence of genetic variability on ARTs.

TL;DR: Wild boars from managed fenced estates had antibodies against more pathogens than wild boar from open estates, and T. gondii seroprevalence was negatively related to ovulation rate and partial resorption index, which were statistically associated with age.

TL;DR: The etio-pathogenesis of these causes of reproductive losses, as well as the major risk factors and strategies to prevent their occurrence, are reviewed.

TL;DR: It is shown that suboptimal progesterone support during the early luteal phase is likely to deleteriously affect embryo viability and in addition, that it is possible to predict milk progestersone concentrations during theEarly luteAL phase based on earlier stage concentrations and thus identify cows at risk of early embryo loss.

TL;DR: Results presented herein indicate that delaying the removal of progesterone/progestogen-releasing devices, combined with the administration of GnRH or pLH 12 h after the last FSH injection, results in synchronous ovulations, permitting the application of fixed-time AI of donors without the necessity of estrus detection and without compromising the results.

TL;DR: Significant correlation between GGT and motility may be a sign for its function for cell protection against free radicals, and LDH activity significantly correlates with motility and progressive motility, live:dead-ratio and pathomorphology in equine seminal plasma.

TL;DR: Bovine viral diarrhea virus and Leptospira spp.

TL;DR: It now is clear that gain in sperm quantity is achieved at the expense of sperm quality, suggesting an extensive disruption of normal testicular function in teratospermic donors.

TL;DR: The idea that capacitation and "cryocapacitation" are not equivalent processes is supported, as cellular signaling in in vitro capacitated equine spermatozoa appeared to be in part dependent on activation of the cAMP/PKA pathway, whereas signaling in cryopreserved cells seemed to proceed predominantly through alternative pathways.

TL;DR: It is inferred that pregnancy losses could be reduced by feeding whole flaxseed as a result of its effects on different factors such as modulation in concentration of progesterone and size of the CL.

TL;DR: Current knowledge on the reproductive endocrinology of female domestic and nondomestic cats is summarized, and how the rapidly growing endocrine database is aiding ex situ management efforts is described.