The present experiment aims to examine the efficiency of estrus synchronization using progesterone and equine chorionic gonadotrophin (eCG) and to look at luteal function. During the non-breeding and breeding season, 5 adult female Korean native goats were injected intramuscularly with 2.5 ml of physiological saline as the control. A progesterone impregnated intravaginal sponge was then kept in the same goats for 10 days followed, after a week, by an intramuscular injection of 500 IU eCG. Five adult female Nubian goats were mated with a fertile buck during the non-breeding season. During the non-breeding season 2 of the 5 goats showed a normal estrous cycle (ranging from 18 to 21 days) and 3 a short estrous cycle (ranging from 3 to 6 days). During the breeding season the equivalent figures were 1 and 2. The major axes of the corpus luteum (CL) were measured by means of calipers built into the ultrasonography system, and the concentrations of plasma progesterone (P(4)) were determined by double antibody radioimmunoassay. The mean major axes of the CL in goats showing the short cycle (6.1 +/- 0.5 mm) was significantly smaller than in those showing the normal cycle (8.9 +/- 0.5 mm; p < 0.01) and also the value of P4 in goats showing the short cycle (4.2 +/- 2.1 ng/ml) was significantly lower than for those showing the normal cycle (10.3 +/- 4.3 ng/ml; p < 0.05) at day 3 following ovulation. Three out of 5 Nubian goats became pregnant but only one goat carried to full term. The present experiment indicated that a combination of progesterone and eCG was effective in inducing estrus, although it resulted in a high incidence of short luteal lifespan. The low kidding rate and high incidence of embryonic loss may be due to the instability of the luteal lifespan.
Animals ; Chorionic Gonadotropin/*pharmacology ; Corpus Luteum/*drug effects/*physiology ; Estrus Synchronization/*drug effects/physiology ; Female ; Fertility/*drug effects ; Fertility Agents, Female/pharmacology ; Goats/*physiology ; Horses ; Pregnancy ; Progesterone/blood/*pharmacology

A clinico-epidemiological analysis was performed of 2,414 consecutive stroke patients who were treated in our hospital during the 6-year period from 1997 through 2003. All the patients were neurologically examined and diagnostic studies were made by use of computed tomography. Cerebral infarction, cerebral hemorrhage, and subarachnoid hemorrhage accounted for 68%, 22%, and 10% of the stroke cases, respectively. The incidence of these subtypes of stroke in this region during the past 20 years was characterized by a singnificant decrease in cerebral hemorrhage, and an increased proportion of cerebral infarction. Men exceeded women in the incidences of both cerebral infarction and hemorrhage, whereas characteristically women far exceeded men in subarachnoid hemorrhage. The incidence reached a peak in the 70-79 age group regardless of the subtypes of stroke, and 64% of the entire stroke patients were those 70 and older. Women were found to suffer from stroke at much older age than men. As to the site of hemorrhage, putaminal hemorrhage was the most frequent, experienced by 36% of the patients, followed by thalamic hemorrhage in 34% of the patients. Putaminal and pontine hemorrhages predominated in the age groups younger than 60;thalamic, cerebellar and subcortical hemorrhages were predominant in the age groups older than 70. The incidence of these subtypes of hemorrhage during the past 20 years was characterized by a dramatic decrease in putaminal hemorrhage in a younger population, and a significant increase in thalamic, cerebellar, and subcortical hemorrhages in an older population.
Cerebrovascular accident ; Hemorrhage ; seconds ; Age Group Unspecified ; incidence of cases