• Bio news
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• no.5
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• pp.10-10
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• 2004

• LOGISTICS
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• s.10
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• pp.38-42
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• 2005

• KOREAN POULTRY JOURNAL
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• s.3
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• pp.61-65
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• 1970

• 산림경영
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• s.57
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• pp.16-20
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• 1990

• 산림경영
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• s.41
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• pp.16-18
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• 1989

• Horticultural Science & Technology
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• v.31 no.3
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• pp.289-298
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• 2013

Effects of curing treatments and storage temperature on the quality of Chinese yams (Dioscorea polystachya Turcz.) were investigated stepwise in three consecutive years for the optimization of postharvest handling procedures. Tuberous roots were harvested in early to mid November and cured under ambient or $29^{\circ}C$ heated air conditions for various periods according to the treatment conditions. Storage temperatures in the range of 0.5 to $7.5^{\circ}C$ were phased in to avoid chilling injury while examining storage potential from 4 to 7 months. As poststorage technology, short-term $60^{\circ}C$ hot-air exposure or low shelf temperature treatments were additively imposed. Curing treatments, especially heated air curing for 3-5 days tended to reduce the respiration and weight loss during storage while maintaining flesh firmness. Storage at $0.5^{\circ}C$ brought out typical chilling injury symptoms on the shelf with increases in respiration and lower flesh firmness by tissue breakdown resulting in the rapid loss of marketability. Optimum storage temperature appeared to be the $3-4^{\circ}C$ range which suppresses quality deterioration while avoiding chilling injury. Low shelf temperature seemed to be a necessary part of postharvest handling system to keep marketability through control of poststorage disorders such as rooting and decay. Overall results suggested that optimized postharvest program consisting of heated-air curing, storage at $3-4^{\circ}C$, and low shelf temperature could extend storage potential of Chinese yam to longer than 7 months.

• Journal of Life Science
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• v.19 no.2
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• pp.169-173
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• 2009

To assist in selection schemes we estimate the genetic diversity of the horse breeds. Genetic diversity at 13 microsatellite loci was compared in six horse breeds : Jeju Native Horse, American Quarter, Jeju Racing Horse, Mongolian Horse, Japanese Horse and Thoroughbred. All of the equine microsatellite used in this study were amplified and were polymorphic. The expected total heterozygosity over all the populations varied between 0.669 and 0.869 and the expected heterozygosity within population range from 0.569 to 0.219 in this study. The low coefficient of gene differentiation value showed that only 0.118 of the diversity was between horses breeds. The constructed dendrogram from the genetic distance matrix showed little differentiation between horse breeds using DISPAN program. The genetic distance using 13 microsatellites ranged between 0.137 and 0.414 for the six horse breeds. These results confirm the potential use of equine microsatellite loci as a tool for genetic studies in horse populations. The genetic diversity of the six horse breeds to each other closed to their geographical distribution. Suggesting that the loci would be suitable for horse breeds parentage testing. Therefore, Microsatellite marker seems to be very useful for clarifying the evolutionary relationships of closely related populations.

• Journal of Veterinary Clinics
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• v.29 no.6
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• pp.431-434
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• 2012

This study was conducted to survey red blood cell (RBC) antigens Aa, Ca and Qa types, which are considered to be the most significantly associated with occurrence of neonatal isoerythrolysis, and the results are expected to provide valuable informations in organization of breeding plan, hence preventing the disease. Blood samples were collected from 262 Thoroughbred horses in Jeju island. Two percent cell suspension has been prepared from each sample and they were tested by indirect antiglobulin test. Of the 226 mare's samples, 9(3.98%) were Aa negative, 8(3.54%) were Ca negative, 17(7.52%) were Qa negative. Of the 36 Stallion's samples, 1(2.78%) was Aa negative, 3(8.33%) were Ca negative, 3(8.33%) were Qa negative. On the basis of these data, a database for breeding compatability could be set, and it would play an important role as a reference for arranging the mating partners.

• Journal of Veterinary Clinics
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• v.32 no.1
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• pp.36-40
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• 2015

Equine colic is a major concern in equine industry due to high morbidity and mortality rates. The purpose of this study was to establish mortality rates during medically and surgically treated colic and to identify potential prognostic indicators for mortality of equine colic in Korea. The overall mortality rate was 18/119 (15%). The 93 cases (78%) were treated medically and 26 cases (22%) surgically out of the 119 records reviewed. The mortality rate in small intestinal lesion was 7/9 (78%) and strangulating lesion was 10/11 (91%). The significance between individual factors and prognosis of equine colic was not valid but high frequency rate was found in ${\leq}3$ years age (59%) and male (50%). In dead group showed higher, rectal temperature and heart rate than those of survived group. The mortality rate was significantly high in the pale mucous membrane color and severe pain and decreased intestinal motility. In laboratory factors, dead group showed lower level of platelet than survived group, and had higher values of RBC, hemoglobin, PCV with significance (P < 0.05). Group with increased enzyme activity of CK, LDH, glucose showed poor prognosis.

• Korean Journal of Microbiology
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• v.50 no.1
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• pp.53-59
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• 2014

This study was conducted to investigate the characteristics between non-fermented chinese yam and rice (non-FCYR) and fermented chinese yam and rice (FCYR). 1.1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, total polyphenol, flavonoid contents and reducing power were investigated to evaluate the anti-oxidation activities of FCYR. Also, productivity of monacolin K, major medicinal ingredient of FCYR, was investigated, using Aspergillus terreus KCCM 12225. In case of non-FCYR, DPPH radical scavenging activities for three kinds of yam (Dioscorea japonica, Dioscorea batatas, Dioscorea opposita) and rice were estimated about 51.8, 66.4, 42.2 and 7.5%, while in case of FCYR, those for three kinds of yam and rice were estimated to increased about 64.7, 74.7, 52.8, and 32.3%, respectively. Total polyphenol contents of non-FCYR were estimated to 196.9, 265.7, 160.1, and 91.6 mg/kg, while total polyphenol contents of FCYR were estimated to increase about 530.7, 708.3, 427.2, and 265.9 mg/kg, respectively. Total flavonoid contents of FCYR increased to 2.8-3.3 times higher than those of non-FCYR. Reducing power of non-FCYR was about 0.97, 1.28, 0.64, and 0.17 (OD at 700 nm), while, that of FCYR increased about 1.75, 2.38, 1.24, and 0.46. Remakable increase in monacolin K productivity of FCYR was observed. Monacolin K productivity of FCYR was estimated to 467.1, 514.8, 339.2, and 272.5 mg/kg, respectively. In this study, fermented chinese yam (Dioscorea batatas) was estimated to be effective biological activity material.