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Studies on evaluation techniques of anthelmintic efficact by fecal egg counts in cattle naturally infected with helminths
1984
Jee, C.H. | Jang, D.H. | Youn, H.J. (Seoul National Univ., Suwon (Korea R.). Coll. of Veterinary Medicine)
In the evaluation of anthelmintic efficacy by fecal egg counts for cattle naturally infected with helminths, the reasonable technique of fecal egg counts and the reliable guidelines were determined. Modified technique of Harashigeru and Kim's sedimental tube was the most reasonable in fluke egg counts. Universal egg counting technique was preciser than McMaster egg counting technique and was lower in coefficient variation. Fecal egg counts of pretreatment should be carried out twice and mean of the egg should be calculated
显示更多 [+] 显示较少 [-]Effects of over-dosed lead and its interaction with iron, copper, zinc or protein supplement in chicks
1984
Park, J.H. | Kim, C.S. (Korea Advanced Institute of Science and Technology, Seoul (Korea R.))
The protective effects of high levels of dietary iron, copper, zinc or protein on lead toxicity were studied in chicks. Growth retardation, reduction of feed intake, anemia and accumulation of lead in the bone and kidney were observed in chicks fed a diet containing 500mg lead as chloride/kg of feed for 42 days. Early changes due to ingested lead were inhibition of red blood cell 8-aminolevulinic acid dehydrase at all doses and no effect of iron, copper, zinc or protein addition were observed
显示更多 [+] 显示较少 [-]Sensitivity of repeat tuberculin test with bovine PPD, seibert's fraction A(SFA) and avian PPD tuberculins in visible and non-visible lesion reactor cattle to HCSM tuberculin
1984
Choi, C.S. | Kim, J.H. | Yoon, Y.D. (Institute of Veterinary Research, Dept. of Bacteriology)
To investigate the sensitivity of repeat tuberculin test with bovine PPD, seibert's fraction A(SFA) and avian PPD tuberculins in visible and non-visible lesion reactor cattle to HCSM tuberculin. The comparative test, under the condition of this experiment, was entirely unsatisfactory to differentiate between visible and non-visible lesion cases, the high frequency distribution of the skin fold thickness greater than 10mm to SFA tuberculin appeared in visible lesion cases, whereas the skin reaction 1 less than 4mm to the SFA tuberculin appeared in NVL cases
显示更多 [+] 显示较少 [-]Anatomical studies on patterns of branches of aortic arch in Korean native goat
1984
Lee, H.S. | Lee, J.S. (Seoul National Univ., Suwon (Korea R.). Coll. of Veterinary Medicine)
This macroscopic observation was performed to investigate the aortic arch and their branches of the Korean native goat. Ten Korean native goats with black hairs ranging in body weight from 15 to 20kg were used. The findings were based on the latex cast of the vessels made by injection of neoprene latex. The Truncus bicaroticus was continued from the Truncus brachiocephalicus after branching off the A. subclavia dextra in 8 out of 10 cases, but the As. carotidas communes sinistra and dextra were directly branched from the Truncus brachiocephalicus without forming the Truncus bicaroticus in the remaining 2 cases
显示更多 [+] 显示较少 [-]Studies on the physiological properties of the histamine receptor of ileal smooth muscle in dog
1984
Kim, J.H. (Kyongsang National Univ., Chinju (Korea R.). Dept. of Veterinary Medicine) | Park, Y.B. (Seoul National Univ., Seoul (Korea R.). Coll. of Medicine) | Kwun, J.K. (Seoul National Univ., Suwon (Korea R.). Coll. of Veterinary Medicine)
To validate the physiological properties of the histamine receptors of ileal smooth muscle in dog, the effect of adrenergic, cholineric and H-receptor antagonists on the responses of ileal smooth muscle strips to histamine were investigated. Histamine caused the contraction of ileal smooth muscle and the contractile responses increased between the concentration of histamine (10-7M and 10-5 M) with dosedependent manner in dog. The shorter the treatment interval of histamine, the lower the contractile activity until the treatment interval extended to 40 minutes
显示更多 [+] 显示较少 [-]Studies on the diagnosis of subclinical mastitis in cows by the measurement of the electrical conductivity, 1; comparison of various methods of handling conductivity data with the use of California mastitis test and direct somatic cell count
1984
Kang, B.K. (Chonnam National Univ., Kwangju (Korea R.). Coll. of Agriculture. Dept. of Veterinary Medicine)
A total of 466 foremilk from dairy farms in Chonnam Korea [R.] district was examined for the subclinical mastitis over a period of 1 year, using a method of the electrical conductivities (EC); absolute conductivity (AC) and differential conductivity (DC) and quarter difference value (QD), in relation to the California mastitis test (CMT) and the direst somatic cell count (DSCC). The compatibility and efficiency rating between the EC values and the other screening tests was conducted
显示更多 [+] 显示较少 [-]Observations of lymphoid polyps on the gastrointestinal tract
1984
Kwak, S.D. (Kyongsang National Univ., Chinju (Korea R.). Dept. of Veterinary Medicine)
The present observations were focussed mainly on the macroscopic and histopathological examinations of polyps found on the stomach of 4-month-old pig, small intestine of 3-month-old pig and cecum of 9-month-old dog. The polyps were gray or pink hemispherical shapes attached by the broad base to the gastrointestinal walls and were 3 to 8 mm in diameter and diffuse appearance. The surfaces of polyps were flat or indented and were ulcerated in some large polyps
显示更多 [+] 显示较少 [-]Porcine eperythrozoonosis-like disease in Korea [R.]; epidemiological observations
1984
Rim, B.M. (Chonbuk National Univ., Chonju (Korea R.). Dept. of Veterinary Medicine) | Kim, C.S. (Rochester Univ. (USA)) | Han, D.S. (Wonkwang Univ., Iri (Korea R.))
Basic biological and epidemiological observation on eperythrozoonosis like disease of swine in Korea R. was taken, using 157 naturally affected pigs and blood samples of 250 normal pigs. Although infection rates, morphology and sizes of the organisms in stained blood films varied depending on the season, all of the affected pigs showed positive infection and the normal pigs were found 54% positive over the year. The organisms appeared to have 5 morphological forms with sizes of 0.5-5.0 micron but the sizes had increment to 1.4-8.5 micron with cytoplasmic granules when the blood was stored under 0 deg C for more than 1 week or -20 deg C for 24 hrs.
显示更多 [+] 显示较少 [-]Histopathological observations of the natural case and experimental occurrence of perirenal edema in pig
1984
Cho, S.W. (Chungnam National Univ., Taejon (Korea R.). Dept. of Histology) | Lee, C.S. (Kyongbuk National Univ., Taegu (Korea R.). Dept. of Veterinary Medicine)
This paper deals with the histopathological observations of the perirenal edema in pigs and rabbits administered with Amaranthus retroflexus, based on the clinical and pathological observations of the porcine perirenal edema naturally occurring in Korea R. In the natural case, clinical signs are trembling, weakness and incoordination of the hindquarters, followed by sternal recumbency, coma and death. Death usually occurs within 24 hrs after the appearance of illness signs
显示更多 [+] 显示较少 [-]Rhipicephalus sanguineus (Latreille 1806); a new record of male tick identified with scanning electron microscopy in Korea R.
1984
Kang, Y.B. (Office of Rural Development, Anyang (Korea R.). Inst. of Veterinary Research)
The specimens were examined at the Institute of Veterinary Research in Anyang, Korea R. and were identified as Rhipicephilus sanguineus (Latreille 1806). The morphological characteristics observed by means of the scanning electron microscope were presented with some SEM microphotographs. As R. sanguineus was firstly discovered to occur in Korea R, a total of 20 species of ticks belonging to 8 genera such as Argas, Amblyomma, Boophilus, Dermacentor, Haemaphysalis, Hyalomma, Ixodes and Rhipicephalus has now been recorded
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