Infectious epididymitis is considered a major cause of economic losses for the sheep industry worldwide. This study aimed to investigate clinical and pathological changes associated with experimental infections with A. seminis and H. somni in rams. Twenty rams of age 18 to 24 months were infected by intraepididymal inoculation of A. seminis (n = 10) and H. somni (n = 10). Rams were weekly exami...

This paper describes low-voltage random-access memory (RAM) cells and peripheral circuits for standalone and embedded RAMs, focusing on stable operation and reduced subthreshold current in standby and active modes. First, technology trends in low-voltage dynamic RAMs (DRAMs) and static RAMs (SRAMs) are reviewed and the challenges of lowvoltage RAMs in terms of cell signal charge are clarified, ...

the reproductive activity is influenced by environmental conditions in most animal species. the aim of the present study was to determine the seasonal changes of seminiferous tubules structure and spermatogenic activity in khouzestan arabian rams. for this propose 30 adult rams were reared under closed grazing conditions. four rams were randomly selected in each season and their live weight, te...

Serum levels of T3, T4, and TSH hormones, some elements, and glucose with regard to their involvement for growth retardation in yearling rams were investigated. A total of 70 yearling rams of the Akkaraman breed, 50 of which were classified with a retarded growth, and the remaining 20 were classified as normal, were included in the study. Serum total T3, total T4, and TSH were measured using ch...

The purpose of this study was to determine whether the ejaculation rate (serving capacity) of sexually experienced rams could be estimated by selected measures of sexual libido when rams were exposed to estrous ewes under conditions that prevented copulations. Twenty-four crossbred rams selected for either high or low rates of copulation were exposed to two restrained estrous ewes under three t...

Sera from rams infected with and excreting Brucella ovis in the semen (shedders), as well as from animals which had recovered from previous experimental challenge with B. ovis, were analyzed for their serological reactivities against cytosolic antigens of the bacterium. Membrane vesicles, including outer and inner membrane components, were precluded from the analyses by subjecting French-presse...

The presence of antibodies to Brucella outer membrane lipoprotein was investigated in cattle and rams. Low but significant amounts of antibody were detected in sera from B. abortus-infected cattle and from B. ovis-infected rams which had developed epididymitis. Strain-19-vaccinated cattle also showed a weak albeit transient antibody response.

The aim of the present study is to induce the sexual activity and to attain ejaculation during non-mating season in aboriginal ram breeds bred in Bulgaria. The possibility is discussed to use these rams with regard to the selection activity in effective sexual way. KEY WORD: Aborigine rams breeds, sexual activity and reflexes, semen

The objective was to compare the relative response between rams and bulls in characteristics of LH, FSH and testosterone (T) secretion, during and after long-term treatment with GnRH analogs. Animals were treated with GnRH agonist, GnRH antagonist, or vehicle (Control) for 28 days. Serial blood samples were collected on day 21 of treatment, and at several intervals after treatment. Injections o...

Two groups of purebred ewes (A and B), each consisting of 25 Dorsets and 25 Hampshires, were used to study effects of ewe breed and ram exposure on ovulation and estrus in May and June. Ewes lambed in January and February and were isolated from mature rams for at least 5 mo. From May 8 to June 11 (Period 1), Group A ewes were penned with vasectomized rams fitted with marking harnesses and Group...