• 한국식품과학회지
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• 제21권5호
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• pp.613-618
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• 1989

한국산 미곡 통일계 및 일반계 품종들의 미질특성을 구명하기 위하여 1985년에 3개 작물시험장(수원작물시험장, 영남작물시험장 및 호남작물시험장)에서 생산된 통일계 13품종과 일반계 10품종을 재료로 하여 백미의 취반특성 및 밥의 texture 특성을 조사하였다. 취반특성 중 흡수율 및 취반시 사용한 용액 중 용출고형물은 각각 $p<2.172^*$ 및 $p<2.419^*$로 계통간에 유의차를 보였는데 흡수율은 일반계가 통일계보다 높았으며, 용출고형물은 통일계가 일반계보다 높았다. 밥의 texture 특성에서 hardness와 cohesiveness는 $p<4.370^{***}$ 및 $p<2.371^*$로 계통간에 유의성이 인정되었으며, hardness는 일반계가, cohesiveness는 통일계가 높았다. Amylose 함량과 adhesiveness 사이에는 통일계에서 $r=-0.922^{**}$ 일반계에서 $r=-0.915^{**}$으로 역상관을 이루었으며, 단백질 함량과 hardness 사이에는 통일계에서 $r=0.954^{**}$, 일반계에서 $r=0.915^{**}$로 정상관을 이루었다.

• Journal of Animal Science and Technology
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• 제56권1호
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• pp.2.1-2.8
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• 2014

Hanwoo (Korean cattle) is the native, taurine type of cattle breed of Korea and its history as a draft animal dates back to 5000 Years. In earlier times Hanwoo was used extensively for farming, transportation. Over the period of time, Hanwoo has changed to be meat type cattle. Full-scale production of Hanwoo as meat-type cattle has occurred since 1960s with the rapid growth of the Korean economy. Hanwoo is one of the most economically important species in Korea as it is a significant source of nutrition to the Korean people. Hanwoo beef is the most cherished food of Korea. One of the main goals of researchers is to increase the meat quality, quantity and taste of the beef. In this review we describe the origin, domestication of Hanwoo cattle and breeding program initiated from 1980's. Moreover the advent of technological advancement had provided us a platform to perform genome wide selection on economic traits and its implementation into traditional breeding programs.

• Asian-Australasian Journal of Animal Sciences
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• 제13권10호
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• pp.1482-1498
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• 2000

This paper reviews the meat-type chicken breeding with local breeds in China. The quality chickens are defined as purebred final products of local breeds, and semi-quality chickens as crossbreds of local breeds with specialized broiler (sire or dam) lines from western breeding organizations. The present status of the chicken production and the market in China, in comparison with the western countries, is reviewed, indicating that there is large market demand for (semi-) quality chickens in the present and future China. Breeding for (semi-) quality chickens emphasizes the sensory quality of chicken meat. The present status of breeding for (semi-) quality chickens with the local breeds is illustrated, including breeding goals and the existing breeding programs. The potential role of local breeds in breeding programs in China is discussed in relation to both providing higher quality (than commercial hybrid broilers) of chicken meat for the local market and meeting the objectives of genetic resource conservation. Besides, further research topics on breeding for (semi-) quality chickens are suggested.

• Asian-Australasian Journal of Animal Sciences
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• 제19권10호
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• pp.1369-1378
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• 2006

This is the first study in which genetic variability and relationships of a large number of Japanese chicken breeds were revealed along with those of several foreign breeds by using microsatellite DNA polymorphisms. Twenty-eight breeds (34 populations) of native Japanese chickens and seven foreign breeds or varieties were analyzed. The mean number of alleles per locus, the proportion of the polymorphic loci, and the expected average heterozygosity ranged from 1.75 to 4.70, from 0.55 to 1.00, and from 0.21 to 0.67, respectively. Microsatellite alleles being unique to a particular population were detected in some populations. The $D_A$ genetic distance between populations was obtained from allele frequency for every pair of the populations to construct a neighbor-joining tree. According to the phylogenetic tree, excluding a few exceptions, native Japanese chicken breeds and foreign breeds were clearly separated from each other. Furthermore, the tree topology divided native Japanese chickens into four main classes, which was almost in accordance with the classification based on body morphology; that is, (1) Cochin type, (2) Malay type, (3) layer type, and (4) intermediate type between Malay and layer types. This is the first finding for native Japanese chickens.

• 한국환경과학회지
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• 제31권4호
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• pp.369-372
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• 2022

This study was conducted to determine the injury type and frequency of bearded dragons during single and group breeding according to stocking density, for 16 weeks. A total of 14 bearded dragons compromising three groups were selected for this study. Six and four bearded dragons bred in a cage of 45 cm × 45 cm × 45 cm were designed as group A and B, respectively. Group C was made of four partitions (20 cm × 20 cm × 20 cm) of equal size in the kennel, and the dragons, four in number, were reared alone. Injury type criteria were given 1 score each in 6 stages. Most of the injury types in group A were primary tail cutting, which was 1 point, depending on the score, except for 4 scores. The injury type of group A varied, that is 1, 2, 3, and 5 scores, and the pattern lasted for 2 to 9 weeks. After 10 weeks, the dragons showed no response to injury type, except 4 scores at 11 weeks and 2 scores at 14 weeks with a frequency of one, respectively. The representative injury types of the group B were primary tail cutting, which was 1 point, and the scores of the injury type from 2 to 11 weeks were the highest; the frequency of occurrence at 1 and 2 scores was 5 times and 3 times, respectively, and the frequency of occurrence at 3 scores was twice. In addition, 5 scores were found to have the lowest frequency of occurrence. Solitary breeding showed no response to the type of injury for 16 weeks. Consequently, single breeding with an appropriate stocking density did not affect stress, and it could be expected a positive aspect for pet welfare.

• 한국패류학회지
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• 제30권4호
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• pp.409-413
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• 2014

본 연구는 북방전복의 보라색패각색의 유전적 지배를 명확히 파악하는 것을 목적으로 하였다. 환경적 요인과 유전적 요인을 명확히 구분하기 위하여 모든 실험구는 같은 사료를 공급하여 실험 하였으며, 또한 동시에 생산된 4가계를 혼합사육한 후 microsatellite DNA를 이용하여 친자확인으로 가계를 분리하여 가계간의 패각색의 분리를 확인하였다. 그 결과, 교배형태가 ♀Gr ${\times}$ ♂Gr (GG type), ♀Pu ${\times}$ ♂Gr (PG type) 및 ♀Gr ${\times}$ ♂Pu (GP type)의 경우 모든 자식개체의 패각색은 녹색으로 나타난 반면, ♀Pu ${\times}$ ♂Pu (PP type)의 교배구의 모든 자식개체는 보라색패각형으로 나타났다. 따라서 패각색 형태는 녹색이 우성, 보라색이 열성형질로 가정할 경우 패각색의 표현형 분리의 설명이 가능하며, 보라색패각색의 유전지배는 1개의 유전자좌에 대하여 2개의 대립유전자에 의해 결정된다고 생각된다.

• 한국발생생물학회지:발생과생식
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• 제18권4호
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• pp.267-274
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• 2014

The immune system in teleost fish is not completely developed during embryonic and larval stages, therefore effective innate mechanisms is very important for survival in such an environment. However, the knowledge of the development of immune system assumed to be restricted. In many species, lysozymes have been considered as important genes of the first line immune defense. The early detection of lysozyme mRNA in previous reports, led to the investigation of its presence in oocytes. As a result, c-type lysozyme mRNA transcripts were detected in unfertilized oocytes indicating maternal transfer. Therefore, we investigated the expression patterns of lysozymes in flounder, including the matured oocyte. In our results, c-type lysozyme mRNA was first detected in unfertilized oocyte stage, observed the significantly decreased until hatching stage, and was significantly increased after hatching stage. On the other hand, g-type lysozyme mRNA transcripts were first detected at late neurula stage, and the mRNA level was significantly increased after 20 dph. It may be suggest that maternally supplied mRNAs are selectively degraded prior to the activation of embryonic transcription. This study will be help in understanding the maturation and onset of humoral immunity during development of olive flounder immune system.

• 화훼연구
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• 제16권2호
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• pp.149-151
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• 2008

경남농업기술원 화훼육종연구소에서 2000년부터 교배조합 육성을 위하여 국내의 재배농가와 종묘업체로부터 유전자원을 수집한 후, 2000년부터 2007년에 걸쳐 교배 및 계통선발육종을 하였다. 2004년부터 2006년까지 3회의 특성검정을 거쳐서 호접란 신품종 '리틀 듀'를 개발하였다. '리틀 듀'는 백색 미니 다화성계 품종으로 꽃잎, 꽃받침, 설판이 모두 백색이며 꽃 크기는 3~4cm 정도이다. 특히 화경이 3~4개 정도가 발생하여 많은 꽃이 피고 꽃배열도 우수하여 관상가치가 높아 시장성이 우수하다고 판단되었다. 또한 조직배양을 통해 영양번식도 용이한 것으로 나타났고 재배가 용이하고 생육속도도 매우 빠른 것으로 나타났다. 꽃수명도 긴 편이며 병충해 발생도 적고 저온처리를 통한 개화조절도 용이하여 상업용 재배에 적합한 품종으로 판단되었다.

• 생약학회지
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• 제52권2호
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• pp.69-76
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• 2021

Cannabis sativa is an important industrial plant utilized to produce fiber, oil, and medicinal ingredients. A chemotype of cannabis is divided into "Drug type" with predominance of tetrahydrocannabinolic acid (THCA) and "Fiber type" with cannabidiolic acid (CBDA). To develop molecular markers for the discrimination of these two types, nucleotide sequences of THCA synthase and CBDA synthase as well as their pseudogenes were retrieved from the recently published cannabis genome in chromosome scale. Gene-specific SNPs were discovered by multiple alignment of these sequences, and 2 dominant marker sets from each gene were designed for selective amplification. Our markers successfully identified "Drug type" and "Fiber type" cannabis plants as well as forensic samples including processed materials. Our molecular markers will provide a fast and efficient system for molecular-based identification of the cannabis plant.

• 한국발생생물학회지:발생과생식
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• 제20권4호
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• pp.297-304
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• 2016

Lectins belong to the pattern-recognition receptors (PRRs) class and play important roles in the recognition and elimination of pathogens via the innate immune system. Recently, it was reported that lily-type lectin-1 is involved when a pathogen attacks in the early immune response of fish. However, this study is limited to information that the lectin is involved in the innate immune response against viral infection. In the present study, the lily-type lectin-2 and -3 of Oplegnathus fasciatus (OfLTL-2 and 3) have been presented to be included B-lectin domain and two D-mannose binding sites in the amino acid sequence that an important feature for the fundamental structure. To investigate the functional properties of OfLTLs, the tissue distribution in the healthy rock bream and temporal expression during early developmental stage analysis are performed using quantitative real-time PCR. OfLTL-2 and 3 are predominantly expressed in the liver and skin, but rarely expressed in other organ. Also, the transcripts of OfLTLs are not expressed during the early developmental stage but its transcripts are increased after immune-related organs which are fully formed. In the challenge experiment with RBIV (rock bream iridovirus), the expression of OfLTLs was increased much more strongly in the late response than the early, unlike previously known. These results suggest that OfLTLs are specifically expressed in the immune-related tissues when those organs are fully formed and it can be inferred that the more intensively involved in the second half to the virus infection.