Sexual selection, differences in reproductive success between individuals, continues beyond acquiring a mating partner and affects ejaculate size and composition (sperm competition). Sperm and seminal fluid have very different roles in sperm competition but both components encompass production costs for the male. Theoretical models predict that males should spend ejaculate components prudently ...

Conclusion. Thus, as a result of the annual (2001 2005) serum monitoring relating to the horse horse equine influenza, it was set that antibodies to the equine influenza virus were registered in the horse blood wheys of both vaccinated and not vaccinated for this disease. Circulation among horses from different farms in Ukraine of not registered before strains of the horse equine influenza viru...

Current gene annotation of the horse genome is largely derived from in silico predictions and cross-species alignments. Only a small number of genes are annotated based on equine EST and mRNA sequences. To expand the number of equine genes annotated from equine experimental evidence, we sequenced mRNA from a pool of forty-three different tissues. From these, we derived the structures of 68,594 ...

Despite the importance of quality semen used in artificial insemination to reproductive success dairy herds, few studies have estimated extent genetic variability traits. Even fewer quantified correlation between traits and male fertility. In this study, records 100,058 ejaculates collected from 2,885 Nordic Holstein bulls were estimate parameters for traits, including pre- postcryopreservation...

Reproductive efficiency represented by sexual desire, semen quality, testicular dimensions, and level of sex hormones are among the main components ram fertility, which affect fertility productivity herd. Since development testicles is related to reproductive activity ability fertilize, so measuring dimensions important in evaluating capacity rams. In addition, concentration testosterone reflec...

To provide information on the antigenic variation of the hemagglutinins (HA) among equine H 3 influenza viruses, 26 strains isolated from horses in different areas in the world during the 1963-1996 period were analyzed using a panel of monoclonal antibodies recognizing at least 7 distinct epitopes on the H 3 HA molecule of the prototype strain A/equine/Miami/1/63 (H 3 N 8). The reactivity patte...

Equestrian sport has various welfare issues and educational needs. To address these complex interactions, we propose an integrated approach called the Triple-E Model, which focuses on equine, equestrian, environmental triad. A literature review of existing models suggests that complexities interactions are overlooked, despite significant impact equine industries economics, healthcare, animal we...

The antibody pattern of equine-2/63 viruses has been more sharply defined using a large number of human sera collected in 1964. The birth dates of persons exhibiting the richest experience with equine-2/63-like viruses delineate a period of past prevalence in man of equine-2/63-like viruses. The period is believed to have begun in the mid-1870's and to have terminated in 1889-1890 at the time o...

The KCNH2 and KCNE2 genes encode the cardiac voltage-gated K+ channel KV11.1 and its auxiliary β subunit KCNE2. KV11.1 is critical for repolarization of the cardiac action potential. In humans, mutations or drug therapy affecting the KV11.1 channel are associated with prolongation of the QT intervals on the ECG and increased risk of ventricular tachyarrhythmia and sudden cardiac death--conditio...