• 한국가금학회지
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• 제17권4호
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• pp.303-309
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• 1990

L－트립토판이 충족된 사료에 0.015％의 L－트립토판이 더 첨가된 사료를 이용종계 PS(Hubbard) 1768수에 34주령부터 52주령까지 133일간 급여하여 산난율, 종난율, 수정률, 규격병아리수를 조사하여 대조사료를 급여한 1105수의 값들과 비교하였다. L－트립토판을 급여한 종계는 급여개시 후 7주간인 피크산란기에는 대조사료를 급여한 것과 비슷한 산난율을 보였으나, 피크기 이후 84일(41－52주령)간과 급여중지후 28일간(53－56주령)에는 대조사료를 급여한 것에 비해서 유의하게(P＜0.05) 높은 산난율을 보였다. 종난율도 피크기 이후와 급여중지후의 조사기간에 L－트립토판을 급여한 것에서 대조사료를 급여한 것보다 유의하게 (P＜0.01) 높았고, 실험사육 전기간의 평균종난율도 L－트립토판급여에 의해서 유의하게 (P＜0.05) 높았다. 한편 산난율과 종난률의 변동률은 시험사료를 급여한것에서 대조구의 값들보다 일반적으로 낮았다. 수정률과 부화율은 L－트립토판급여의 영향이 관찰되지 않았으나, 규격병아리수는 L－트립토판을 급여하면 대조에 비해서 유의하게 (P＜.05) 높았다. 그리고 수정률, 부화율 및 규격병아리수에 대한 변동률도 L－트립토판을 급여하면 일반적으로 낮아졌다. 이상과 같이 L－트립토판을 그 요구량 이상으로 첨가한 사료를 급여하면 종란율과 규격병아리수가 높아진다는 것을 나타내고 있다.

• 한국가금학회지
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• 제26권3호
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• pp.203-211
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• 1999

This study was performed to develop brand egg. Forty-four week-old Isa Brown were randomly assigned to 8 treatments and the number of hens were 300 per each group. Experimental period was about 10 weeks. The 8 treatment were as follows : astarich 2%(A), astarich 5%(B), chitch chitosan 2%(C), omega-3 powder 2%(D), pyrogreen 1%(E), greenpia 0.2%(F), hydrogenated soy oil 3%(G) and commercial layer feed(H). Eggs were collected at day 0, 7, 14, 40 and 70 for egg quality analyses. Laying rate was significantly higher in astarich groups(B, C) than ant other group, showing average of 88% of laying rate. In terms of egg factors, whole egg weight was the heaviest in control in control(A) and the lightest in omega-3 powder group(E), while egg yolk weight was the heaviest in astarich group(H). Haugh unit(HU) was the mean of 70 for all treatments and there were no significant differences among the treatments. Egg yolk color was significantly different among treatments during experimental period whenever yolk color was measured. At the day 7 after feeding of experimental diets, the yolk color of astarich 5% group(C) was darker and that of omega-3 powder group(E) lighter. The value of yolk color in astarich 5%(C) and 2%(B) was 14.2 and 12.5, respectively. But the rest of the groups did not show any differences in yolk color, showing mean of 11.5. In terms of shell thickness, shell tended to become thinner, but there were no defferences among treatments during experimental period. The mean value of shell thickness was 0.390mm. In conclusion, astarich groups may seem to produce the best possible quality of brand egg.

• 한국응용곤충학회지
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• 제37권2호
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• pp.119-206
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• 1998

만수국 혼식과 만수국, 잔디, 산검양옻나무, 붉나무 및 양파 등의 식물체 추출액이 토마토에서 당근뿌리혹선충의 기생에 미치는 영향을 알아보기 위하셔 실험을 수행하였다. 만수국을 토마토와 혼식한 실험에서는 토마토 정식 15일전에 만수국을 이식한 구가 15일 후에 이식한 구보다 당근뿌리혹선충의 발생이 적었으며, 잎과 뿌리의 추출액 처리가 혼식보다 더욱 효과적이었다. 즉 만수국 잎추출액의 원액을 토마토 정식 5일전에 처리한 구의 난낭수는 2.2개, 뿌리추출액의 원액을 처리한 구는 5.6개로서 무처리구의 129.4개보다 현저히 적었다. 또한 잔디 추출액처리의 경우에도 무처리구의 난낭수가 87.2개였던데 비하여 원액 처리구는 21개, 2배 희석액 처리구에서는 28.4개로 적었다. 산검양옻나무, 붉나무 및 양파추출액도 당근뿌리혼선충의 발생을 현저히 억제시켰는데, 무처리구의 난낭수 193.6개에 비하여 산검양옻나무 추출액 원액 5일전 처리구에서는 1.6개, 붉은나무 추출액 원액 처리구는 1.6개, 양파추출액 원액 처리구는 6.2개로서 매우 효과가 있었다. 이 실험에서 사용하는 식물체의 추출액을 토마토 정식전에 처리하는 것이 동시 또는 후에 처리하는 것보다 효과적이었으며 추출액의 농도가 높을수록 형성된 난낭수가 적었다.

• 한국생태학회:학술대회논문집
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• 한국생태학회 2002년도 VIII 세계생태학대회
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• pp.107-111
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• 2002

During the breeding season of 1998, breeding ecology of the Great Reed-Warbler (Acrocephalus arundinaceus orientalis) was studied at Yangsoo-ri and Yongdam-ri of the Yangpyung-gun, Kyunggi province, Korea. Egg-weight (CV: 6.25) was more variable than either length or breadth, and breadth was the least variable of the measures. Significant variations In overall egg-weight occurred between clutches, and that more of the total variation in egg-weight and shape are due to inter-clutch variation as to intra-clutch variation when the data were pooled. The last egg tends to be larger than the remaining eggs in the clutch of the Great Reed-Warbler, suggest- ing the Great Reed-Warbler may adopt the brood-survival strategy. When method 3 was used, the most common incubation period is 12 days. In the Great Reed-Warbler, the length of the incubation period was related to clutch-size when method 1 (r=0.485, p<0.05) and method 2 (r=0.621, p<0.01) were employed, but not related to egg weight. The average number of days of hatching asynchrony was 2.5, raging 0.5∼2.5. Asynchronous hatching was related to the clutch size (r=0.66, p<0.01). Hatching sequence was closely related to the laying sequence (r=0.93, p<0.001), suggesting Great Reed-Warblers incubate their eggs before clutch completion. The effect of egg weight on hatching asynchrony was found in Great Reed-Warblers (t-test, p<0.01).

• 한국발생생물학회지:발생과생식
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• 제6권1호
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• pp.37-44
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• 2002

자연 생물자원 관리를 위해, 광양만내 인공적으로 폐쇄된 슬라그 적재장내에 서식하는 암컷 피뿔고둥 Rapana venose(Valenciennes)를 대상으로 조직학적, 육안적 관찰에 의해 군성숙도, 성비, 산란빈도, 난낭 산출 및 포란수를 조사하였다. 암컷 개체들의 군성숙도(%)는 각고 7.1~8.0 cm의 경우 51.6%이었고, 9.1 cm 이상인 개체들의 경우는 100%이었다. 개체당 총난낭수 및 난낭내의 평균 난수는 각각 192~382개와 500개이었는데, 저염분이나 먹이가 부족한 환경조건을 갖추고 있는 폐쇄된 슬러그 적재장내에 서식하는 피뿔고둥들은 최적 염분농도 및 충분한 먹이조건을 갖추고 있는 개방된 지역의 것보다 개체당 총난낭수 및 난낭내 평균 난수가 적었으며,난낭의 크기도 작았다. 본 종의 포란수는 대략 개체당 96,000~191,000이었고, 산란기 중 적어도 2~4회의 산란빈도를 갖는다. 난낭내에서의 발생기간은 약 18~2$0^{\circ}C$에서 18~19일이었다. 피뿔고둥의 배는 어린 고둥이 아닌, 피면자유생으로 부화하였다. 암컷 : 수컷의 성비는 1 : 1로 유의한 차를 보이지 않았다($\chi$$^2$= 0.23, p>0.05)

• Asian Pacific Journal of Cancer Prevention
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• 제17권3호
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• pp.1265-1267
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• 2016

Egg white intake during chemotherapy is common advice for cancer patients for the prevention of leukopenia. However, the benefit is uncertain. We conducted this prospective study to identify the relationship of egg white intake for gynecologic cancer patients who received carboplatin and paclitaxel and the occurrence of leukopenia. Between January 2014 and January, 2015, 81 patients were interviewed regarding their intake of egg whites before receiving subsequent chemotherapy. The basic data, the details of egg white intake and the grade of leukopenia in the previous cycle were recorded. The mean age was 54.1 years and 80% of the patients had a diagnosis of ovarian or endometrial cancer. The patients were interviewed at cycles 1-3 in 45 cases, 4-6 in 45 cases and 7-9 in two cases. Subsequent dose reduction was found in 6.2% and granulocyte-stimulating growth factors was given at 4.9%. All the patients ate egg whites with variations in the number of eggs per day as follows: less than one (3), one to two (56), three to four (14) and five to six (8). Over 70% were recommended by nurses to eat egg whites and about 63% of patients received other supplemental food. Some 44.1% of the patients who ate less than or equal to two eggs per day and 36.4% who ate more than two eggs per day developed grade 2-4 leukopenia, P = 0.61. In conclusion, the data did not provide evidence in support of the conclusion that a greater egg white intake could significantly reduce the occurrence of leukopenia.

• 한국식품조리과학회지
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• 제23권1호통권97호
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• pp.41-49
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• 2007

The substitution effects of whey protein isolate(WPI) for egg in the preparation of sponge cake were determined by objective and subjective tests. Milk whey is drained from milk curd as a by-product of cheese manufacture. Whey protein is known as a good nutritional source and a functional material for many processed foods, especially baked goods. WPI contains above 90% whey protein. The specific gravity and viscosity of sponge cakes tend to be affected by WPI substitution. The cooking loss of sponge cakes with WPI substituted for egg(abbreviated as WPI cake) during oven baking was smaller than that made with egg(abbreviated as egg cake) and the specific loaf volume of WPI cake was larger than that of egg cake. The number of pores was highly increased and the size of pores was more uniformly and finely distributed in the cross section of WPI cake than those of egg cake, as observed by scanning electron microscopy(SEM). The hardness, gumminess and chewiness of WPI cake made with 10-20% WPI substitution were the lowest among all the tested cakes, including egg cake, thereby confirming the considerable improvement in their cake qualities. By the results of sensory evaluation, appearance, pore uniformity, softness, chewiness, moistness, flavor, mouth feeling, and overall acceptability of 10-20% WPI substitute cakes were evaluated as being significantly superior to those of all other cakes(p<0.05). These results support the better physicochemical characteristics and sensory evaluations of sponge cake prepared with 10-20% of WPI substitution for egg.

• 한국가금학회지
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• 제7권2호
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• pp.28-36
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• 1980

This study was carried out to estimate combining abilitie or economic traits in layer chickens. The data used in this study were the record of 10 single crosses produced by half diallel cross of 5 lines of Single Comb White Leghorns, such as A, B, C, K and S lines. Total 720 progenies of the crosses were reared at the Poultry Breeding Farm, College of Agriculture, Seoul National University from Feb. 1979 to August, 1980. Combining abilities were estimated by Grilling's mathematical model for the traits; age the first egg, total egg number, egg weight and body weight. The results attained from the studies were summarized as follows; In estimate of combining ability, an age at first egg of BS cross was largely due to significiantly higher general combining ability (G. C. A.) effect of B and S strains than Cand K strains in G. C. A. effect, and to specific combining ability (S. C. A) effect of B and S-trains. AB and BS crosses showed the highest egg Production. AB cross performance was result from high G.C.A. effect of A ana B strains. BS cross performance was result from high G. C. A. effect of B and high S. C. A. effect of BS cross. Specific combining ability effect in egg. weight was not statiscally significiant, but S strain showed high G. C. A. effect. A and B strains in body weight showed significantly low C. C. A. effect. From the above results, BS cross in an age at first egg, AB and BS crosses in egg Production, S strain in egg weight and AB cross in body weight were superior to other strains or crosses.

• 한국패류학회지
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• 제8권1호
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• pp.21-28
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• 1992

Field investigations were made in 1991 and 1992 in Kwangju and the western and central Chonnam area to determine the distribution of Lymnaea viridis, the intermediate host of Fasciola hepatica, and to study their life history during the different seasons. It had a wide distribution, existing all over the places, and the principal habitats of the snail were rice paddies. The life cycle was determined by making frequent visits to a series of habitats. The snsils began to produce egg masses in April, and egg production was the highest in May and June. Egg laying was continued but decreased in summer. There was sudden decrease in egg production in October when the temperature was below 2$0^{\circ}C$. The number of snails in July. Under the unfavourble conditions the snail either crawle up on the snail to aestivation. At low temperature below 8$^{\circ}C$ the snails hibernated inthe mud of the habitat. It was found in some habitats thao the snails were loving together with L. auricularia and Physa s pp. which indicates the neccessity of differentiation among them.

• 한국잠사곤충학회지
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• 제39권1호
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• pp.17-21
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• 1997

Oral application of fenoxycarb, O-ethyl N-(2-(4-phenoxyphenoxy)ethyl) carbamate, the commercial formulation Insegar, on the 1st day of the 3rd instar made no difference in the egg laying and the hatchability as compared to 750 grains for the number of eggs laid, 53 grains for the number of the resideual eggs unlaid, 749 grains for the number of fertirized eggs, 97% for the total hatchability, and 95% for the useful hatchability as in the control but on the first day of the 4th instar, the number of the remainder eggs in the ovary increased by 2.4 folds, and reduced number of the eggs laid, number of unfertilized eggs, the hatchabillity and useful hatchability by 39%, by 66%, by 68% and by 72%, respectively. When diluted Insegar was applied topically every other two days from the pupae to the moth at concentration of 10-6, 10-7, 10-8, 10-9, 10-10 the number of eggs laid, the number of the unfertilized eggs, the total hatchability and the useful hatchability were decreased. More severe decrease took place as concentration lowered and the earlier application.