• Animal Systematics, Evolution and Diversity
• /
• 제38권4호
• /
• pp.214-221
• /
• 2022

Six species in five families of Lepidoptera were newly recorded from Korea. The adult specimens of these six species were obtained during the rearing caterpillars collected across Korea. Agonopterix omelkoi Lvovsky (Depresariidae) can be distinguished by the ochreous forewing with a dark brown slanted line, a dark brown triangular spot, and a blackish discal dot, and the whitish hindwing. Dichomeris ferruginosa Meyrick (Gelechiidae) can be diagnosed by the light brown forewing with two relatively large blackish dots and suffusion of dark brown along the dorsum and subtermen, and the grayish hindwing. Pseudohedya satoi Kawabe (Tortricidae) can be diagnosed by the dark ochreous forewing with several medially curved dark ochreous medial lines, and the large light grayish tornal marking, and the dark grayish hindwing. Rhodoneura hyphaema (West) (Thyrididae) can be diagnosed by the reddish forewing with a relatively thick postmedial band, and the reddish hindwing with a narrow dark reddish straight medial band. Comibaena subprocumbaria (Oberthür) (Geometridae) can be diagnosed by the greenish forewing with a whitish apical marking that bordered with a brownish or dark reddish line that connected to the termen, and the distal abdominal segments with whitish and dark reddish dots. Perixera absconditaria (Walker) (Geometridae) can be diagnosed by the light brownish forewing with a relatively thick, slanted, dentate brownish postmedial line, and the light brownish hindwing with a small white discal spot. We provide the diagnosis and figures of adults and larvae, and DNA barcoding data.

• Preventive Nutrition and Food Science
• /
• 제11권1호
• /
• pp.17-24
• /
• 2006

Methanolic and aqueous extracts from 37 seaweed species (10 green and 27 brown seaweeds) collected from Jeju Island coast were prepared at high ($70^{\circ}C$) and room ($20^{\circ}C$) temperatures and examined for cytotoxic activity against 4 tumor cell lines: U937 (human monoblastoid leukemia cell line), HL60 (human promyelocytic leukemia cell line), HeLa (woman cervical carcinoma cell line) and CT26 (mouse colon carcinoma line). Both MeOH extracts of Desmarestia tabacoides and Dictyota dichotoma possessed strong cytotoxic activities against all the tumor cell lines tested, but the aqueous extract exhibited no activity. On the other hand Ecklonia cava showed strong cytotoxic activities for the $20^{\circ}C$ aqueous extract against the three tumor cells except HeLa cell. Sagassum coreanum and Sagassum siliquastrum $20^{\circ}C$ aqueous extracts also exhibited strong cytotoxic activities against U937, HL60, HeLa cells. Even though green seaweeds showed less activity than brown seaweeds, $20^{\circ}C$ aqueous extracts of Codium contractum and Codium fragile exhibited strong cytotoxic activities against HL60 or CT26 cells, respectively.

• Asian-Australasian Journal of Animal Sciences
• /
• 제28권12호
• /
• pp.1760-1766
• /
• 2015

This study investigated the proximate composition and $\small{L}$-carnitine and betaine content of meats from 5 lines of Korean indigenous chicken (KIC) for developing highly nutritious meat breeds with health benefits from the bioactive compounds such as $\small{L}$-carnitine and betaine in meat. In addition, the relevance of gender (male and female) and meat type (breast and thigh meat) was examined. A total of 595 F1 progeny (black [B], grey-brown [G], red-brown [R], white [W], and yellow-brown [Y]) from 70 full-sib families were used. The moisture, protein, fat, and ash contents of the meats were significantly affected by line, gender, and meat type (p<0.05). The males in line G and females in line B showed the highest protein and the lowest fat content of the meats. $\small{L}$-carnitine and betaine content showed effects of meat type, line, and gender (p<0.05). The highest $\small{L}$-carnitine content was found in breast and thigh meats from line Y in both genders. The breast meat from line G and the thigh meat from line R had the highest betaine content in males. The female breast and thigh meats showed the highest betaine content in line R. These data could be valuable for establishing selection strategies for developing highly nutritious chicken meat breeds in Korea.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 1999년도 동계 학술대회 논문집
• /
• pp.334-339
• /
• 1999

• 한국가금학회지
• /
• 제36권2호
• /
• pp.149-155
• /
• 2009

본 실험은 동일한 실험사료를 급여한 유사한 생체중의 백세미, 실용 육계와 산란종 수평아리의 도체 생산 효율 및 육질 특성을 비교하기 위해 수행하였다. 계종간의 육질 특성을 조사하기 위해 각각 100수의 백세미 수평아리, 실용 육계 수평아리, 산란종 수평아리를 펜당 25수씩 총 12개 펜에 임의 배치 하였다. 옥수수와 대두박 위주로 배합된 동일한 사료를 급여하여 사육한 후 동일한 날짜에 도계하기 위해 백세미는 35일, 실용 육계는 18일, 산란종 수평아리는 49일간 사육하였다. 계종에 따른 도체 성적과 혈액 성상, 가식성 근육의 물리적 특성을 조사하였으며, 또한 근육 내 과산화물 생성, 항산화 활성, pH 변화 및 계육의 관능적 특성에 대해 평가하였다. 도체율은 백세미와 육계가 산란종 수평아리보다 유의하게 높았고(P<0.05), 산란종 수평아리에서 날개와 다리 비율이, 백세미와 육계에서는 가슴육 비율이 유의하게 높은 결과를 나타내었다(P<0.05). 혈액 내 총 콜레스테롤, GOT 및 GPT 활성에는 처리간에 유의한 차이가 없는 것으로 나타났다. 육질 분석에서 전단력가, 보수력 및 가열 감량에서 계종간 차이가 나타나지 않았으나, 가슴 근육의 명도는 백세미가 가장 높았고, 가슴 근육의 황색도와 다리근육의 적색도에서 백세미와 육계가 산란종 수평아리보다 유의하게 높게 나타났다(P<0.05). 항산화 활성과 pH 변화에서는 백세미와 육계가 산란종 수평아리보다 다소 높았으나 유의한 차이는 아니었다. 육질의 관능적 특성에 대한 조사에서는 백세미가 산란종 수평아리보다 육색에서 유의적으로 높은 결과를 보였으나(P<0.05), 풍미, 연도 및 전체적인 선호도에서는 계종간에 유의한 차이는 인정되지 않았다. 결과적으로 유사한 체중의 세계종을 비교하였을 때 산란종 수평아리에서 계육의 물리 화학적 특성 및 관능적 특성은 백세미 및 실용 육계와 유의적으로 큰 차이는 나타나지 않았다. 그러나 도체 생산 효율, 성장 및 사료 요구율이 낮은 점을 감안한다면 산란종 수평아리의 활용 가능성은 그리 크지 않을 것으로 생각된다.

• Journal of the Korean Wood Science and Technology
• /
• 제20권3호
• /
• pp.55-60
• /
• 1992

Japanese red pine (Pinus densiflora S. et. Z.) decayed by brown-rot fungi Tyromyces palustris and Gloeophyllum trabeum were subjected to X-ray diffraction analysis and infrared spectral examinations. Pine woods decayed by T. palustris showed the increase of relative crystallinity in the initial stage of degradation. When the weight loss was above 30%, then the crystallinity went down slowly. In contrast, the wood samples degraded by G. trabeum showed the decrease of crystallinity from the beginning stage of decay. The changes of crystallinity in brown-rotted woods suggested that the degradation rate of crystalline cellulose was varied with the brown rot fungal species. X-ray diffraction analyses also indicated that crystalline cellulose was much more slowly broken down than the amorphous one. The most notable difference in the IR spectra of the brown-rotted wood samples was that the adsorption band centered at 1,730$cm^{-1}$ was significantly diminished in the decayed wood. indicating the degradation of hemicellulose by brown-rot fungi. However, no marked changes of intensities at 1,000, 1,060 and 1,040$cm^{-1}$ were observed in the brown rotted wood samples, suggesting that crystal line cellulose was resistant against the attack by brown rot fungi.

• 한국식물병리학회지
• /
• 제14권2호
• /
• pp.177-183
• /
• 1998

A DNA fragment which is involved in tolassin production was cloned to obtain a molecular marker of Pseudomonas tolaasii, a casual agent of bacterial brown blotch disease of oyster mushroom (Pleurotus ostreatus). Tolaasin is a lipodepsipeptide toxin and known as a primary disease determinant of the P. tolaasii. It is responsible for formation of white line in agar when P. tolaasii were cultured against white line reacting organisms (WLROs). White line negative mutants (WL-) were generated by conjugation between rifampicin resistant strain of P. tolaasii and E. coli carrying suicidal plasmid pSUP2021 : : Tn5. The ability of tolaasin production of the WL- mutants was examined by hemolysis test, pathogenicity test, and high pressure liquid chromatography (HPLC) analysis of culture filtrate. All of the WL- mutants were lost the ability of tolaasin production (Tol-). Genomic library of the Tol- mutant was constructed in pLAFR3 and the cosmid clone containing Tn5 was selected. DNA fragment fro franking region of Tn5 was cloned from the plasmid and used as a probe in Southern blot. DNA-DNA hybridization with the probe to total DNA from group of bacteria ecologically similar to P. tolaasii including WLORs, fluorescent Pseudomonads isolated from oyster mushroom, P. agarici, P. gingeri, and some of other species of Psedomonas showed that some of the tested bacteria do not have any hybridized band and others have bands sowing RFLP. The cloned DNA fragment or its nucleotide sequence will be useful in detection and identification of the P. tolaasii.

• Asian-Australasian Journal of Animal Sciences
• /
• 제25권4호
• /
• pp.559-568
• /
• 2012

White (Lohmann LSL) and Brown (ATAK-S) laying hens, were reared under organic and conventional cage rearing systems, and the effects of the rearing system on performance parameters, egg production, egg characteristics, and immune response were investigated. For this purpose, a total of 832 laying hens of two commercial hybrids, i.e., 416 white (Lohmann LSL) and 416 Brown (ATAK-S) layers, were used. The experiment lasted between 23 and 70 wk of age. In this study, the white layers yielded more eggs as compared to the brown layers in both organic and conventional production systems. Egg weight exhibited a similar pattern to that of laying performance. However, the total hen-housed egg number for the white birds in the organic system was fewer than that of white birds in the conventional cage facility; conversely, a contradictory tendency was observed for the brown birds. Livability of the white layers in the organic system was remarkably lower (14%) than that of the brown line, whereas the white line survived better (3.42%) than their brown counterparts in conventional cages. The feed conversion ratio of the white hens was markedly inferior in the organic system as compared to that of the white hens in the conventional system, whereas relatively lower deterioration was reported in brown layers when reared in an organic system. The organic production system increased egg albumen height and the Haugh unit in eggs of the brown layers. The yolk color score of organic eggs was lower than that of conventional eggs for both brown and white hens. The egg yolk ratio of eggs from white layers was found to be higher in organic eggs as compared to those obtained in the conventional system. All organic eggs had heavier shells than those produced in the conventional system. Eggs from brown layers had more protein content than eggs from white layers. Neither housing systems nor genotype influenced egg yolk cholesterol concentration. When compared to conventional eggs, n-3 fatty acid content was lower in organic eggs, and the n-6:n-3 ratio was higher in organic eggs. In conclusion, two hen genotypes showed different responses in terms of performance and egg quality to two different rearing systems. A commercial white strain produced more eggs with higher egg quality as compared to a native brown strain. The brown strain was found to have adapted well to organic production conditions when survival and total egg number was taken into consideration.

• 한국가금학회지
• /
• 제44권4호
• /
• pp.235-243
• /
• 2017

This experiment was aimed at investigating the effects of dietary supplementation with fermented rice bran (FRB) or fermented broken rice (FBR) on egg-laying performance, egg quality, blood parameters, and cholesterol level in egg yolk of Hy-Line Brown egg-laying hens. Altogether, 144 Hy-Line Brown egg-laying hens (32-week-old) were randomly allocated to one of 4 dietary treatment groups, with 4 replicates per treatment. Of them, 3 treatments diets were prepared by supplementing the basal diet with 0.1% probiotics (PRO), 1% fermented rice bran (FRB), or 1% fermented broken rice (FBR) at the expense of corn. Hen-day egg production was higher (P<0.05) in PRO and FRB treatment groups than in the basal treatment groups. However, feed intake, egg weight, egg mass, and feed conversion ratio did not differ among the treatment groups. Additionally, supplementation with FRB or FBR did not affect eggshell strength, eggshell thickness, egg yolk color, and Haugh unit during the feeding trial. There was no significant difference in leukocyte count. Total cholesterol level was lower (P<0.05) in the FRB treatment group than in the basal treatment groups. Asparate aminotransferase, alanine transferase, glucose, and albumin levels were unaffected by dietary supplementation with FRB or FBR. Egg yolk cholesterol level was lower (P<0.05) in the FRB and FBR treatment groups than in the basal treatment groups. In conclusion, dietary supplementation with FRB or FBR improved egg-laying performance, and reduced the levels of total serum cholesterol and cholesterol in egg yolk of Hy-Line Brown egg-laying hens.

• Animal Systematics, Evolution and Diversity
• /
• 제31권2호
• /
• pp.122-127
• /
• 2015

The subfamily Ennominae is one of the most species-rich taxa of Geometridae that include more than 9,700 species worldwide and over 280 species in South Korea. Herein, we present the first report of five species of Ennominae. Abraxas flavisinuata can be characterized by the white wings, a thick black postmedial line that is medially and dorsally broken with an orange band, large rounded black discal dots on the forewing, and a black dotted postmedial line on the hindwing. Lomographa claripennis can be characterized by the whitish wings, the black undulating postmedial line as well as the minute blackish discal dot on the forewing, and the black undulating postmedial line with a minute black discal dot on the hindwing. Arichanna tetrica can be characterized by the grayish forewings, thick black transverse ante- and postmedial lines, a large blackish discal dot, whitish apical streak on the forewing, and scattered black dots on the whitish hindwing. Apocleora rimosa can be characterized by the brown ground color of the fore- and hindwings, the black slanted ante- and postmedial lines of the forewing, and two black medial lines on the hindwing. Ourapteryx japonica can be characterized by the white wings, the dark brown transverse ante- and postmedial lines with a long discal dot on the forewing, and the dark brownish transverse antemedial line as well as a termen that has a sharp white tail with one large dark reddish dot and one small black dot on the hindwing.