Amblyomma hebraeum, 60CO irradiation of nymphs failed to attenuate Cowdria ruminatium

Ostertagia ostertagi, beef cattle, acquisition of inhibited larvae during winter and spring, efficacy of ivermectin against inhibited early 4th-stage larvae of O. ostertagi and other nematodes of abomasum and intestinal tract: Louisiana

Schistosoma edwardiense recovered from hippopotamus, measurements of adults and eggs, species validity, determined to be hippopotamus-specific based on examination of game droppings for schistosome eggs and on lack of experimental establishment in rodents, Biomphalaria salinarum believed to be intermediate host based on evidence from experimental exposure; S. hippopotami suggested to be synonymous with S. mansoni

In order to know the morphology and the function of the fat-storing cells (FSC) of the squirrels which were captured at the Pal-Gong mountain near Taegu, Korea [R.] in December, 1980 (Group A) and May, 1981 (Group B), respectively, light and electron microscopic observations were conducted on the liver of the squirrels. Light microscopically, the size of the lipid droplets in the FSC of group A was uniformly larger than those in the cells of group B, and number of the droplets in the FSC of group A was less than those in the cells of Group B. The distribution of the FSC of group A was mainly perilobular area while those of group B were centrolobular and midzonal areas. In this method, the FSC of the squirrels was similar to those cells of the hamsters. Electron microscopically, general morphology of the squirrel's FSC was accorded with those of the other mammals. However, the rough surfaced endoplasmic reticulum in the FSC of group B was more dilated than those in the cells of group A, and more lipid droplets and pinocytotic vesicles were observed in the FSC of group B than those in the cells of group A. From those evidences, it could be suggested that the metabolic rates in the FSC of the squirrels collected in the spring were higher than those in the cells of the animals collected in the winter.

This study was performed to evaluate the sedative effect of xylazine for restraint of deers such as sika deer (19 cases), deer (19 cases), elk (19 cases), pere david deer (13 cases) and reindeer (8 cases), raised in the area of suburb of Seoul, Chungcheongnam-do and Gyungsangbug-do. Provinces, Korea [R.]. The more the dose of xylazine, the earlier the onset of sedation, and the slower the recovery time to normal state. The optimal intramuscular dose of xylazine was found to be 0.8-1.4 mg per Kg of body weight for sika deer, 0.6-1.0 mg for red deer, 1.0-1.4 mg for elk, 0.2-0.4 mg for pere david deer, and 0.6-1.0 mg for reindeer.

The morphological and structural studies of Anisakinae larva has been carried out. The larva was collected from naturally infested eleven swine and from marine fishes, Somber joponicus. Anisakis larva found in the stomach wall and on the surface of mucosa were more or less degenerated. The reports on natural infestation of domestic animal with Anisakis type I larvae were two swine cases in Korea and Japan respectively. On the other hand two human cases of the larva were reported in Korea and more than one thousand cases in Japan. In Taiwan no reports of human and domestic animal cases could be found.

Changes in serum glutamic oxaloacetic transaminase (S-GOT) activities, serum alkaline phosphatase activities and serum total protein amounts were investigated on seven Korean native cows having normal estrus cycle of 18-24 days after normal parturition, dividing estrus cycle into estrus (0-1 days), metestrus (2-6 days), diestrus (7-16 days), proestrus (17-20 days). Serum total protein amount at estrus ranged from 6.45 to 8.08/10O dl with a mean of 7.25 +-0. 56g/100 dl, at metestrus 6.37 to 7.9 g/100 dl with a mean of 7.65+-0 0.50 g/100 dl, at diestrus, 6.56 to 8.67 g/100 dl, with a mean of 7.53+-0.55 g/100 dl and at proestrus 5.94 to 7.71 g/100 dl with a mean of 6.54+-0.65 g/dl. There was no significance among the stages of estrus cycle.

In order to estimate the efficiency of feed added urea zeolite the experiment was carried on in vitro. The pH of all media added urea were inclined toward alkali, except 1% urea (included 99% zeolite) medium. The concentration of ammonia in all media added urea mixed zeolite was inversely proportional to added volume of zeolite; 1,349, 1,298, 1,164 and 786 micron g/ml in 40%, 20%, 10%, 5% and 1% urea media respectively for 30 minutes incubation, and the concentration of ammonia in all media was increased steadily as incubation time proceeded until 9 hours. The efficiency of adsorption of ammonia to zeolite of the feed added 40% urea mixture (dealing in the feed store) was hardly recognized. Accordingly, it is efficient to utilize the feed added 1-5% urea mixture, but it is of no practical use because they need much amount of zeolite.

A total of 251 clinical isolates (human origin 43 strains and boving udder origin 208 strains) of the Staphylococcus that fermented mannitol aerobically were tested for ability to produce coagulase, DNase, and thermostable nuclease. Of these, 158 isolates coagulated human or bovine plasma, produced DNase, and thermostable, nuclease and were identified as St. aureus, 146 of which produced a 1+ to 3+ clot. The remaining 12 isolated produced a -clot in citrate treated plasma but produced 1+ to 3+ clot in ethylenedi-aminetetraacetic acid (EDTA) treated plasma. It was found that 7 coagulase positive isolates failed to produce thermostable nuclease. In these organisms, we found out of the clot formation is not by coagulase activity but utilization of citrate, because EDTA treated plasma is not coagulated. Among 93 isolates which did not coagulate citrate-or EDTA treated plasma and thermostable nuclease negative, 28 strains produced DNase were identified as St. epidermidis, and other strains were not identification further. It was found that thermostable nuclease production appears to be a consistent property of St. aureus and the test is easy to perform, is rapid to become quite distinct within 2 to 4 hours, and is not influenced by as many factors and variations as the coagulase test.