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논오리 방사밀도가 오리의 행동양상 및 벼 생육 , 수량에 미치는 영향
송영한,고병대,Manda, Masaharu 한국환경농학회 2001 한국환경농학회지 Vol.20 No.2
벼논 오리농법에 있어서 오리 방사체계를 명확히 하기 위해 각 처리구를 4 a의 동일면적으로 구분하고, 방사 오리수를 각각 6수, 9수, 12수 및 15수씩으로 하는 4처리구를 설계하여 방사밀도에 따른 오리의 행동형 및 벼 생육과 수량반응에 미치는 영향에 대하여 검토하였던 바, 그 결과를 요약하면 다음과 같다. 오리 방사밀도에 따른 일중 12시간 동안의 행동변화에서 섭식 및 이동행동은 12수 방사구에서 가장 길었고, 노동행동에서도 다른 3처리구에 비해 12수 방사구에서 유의적으로 길게 나타났다(P<0.05). 반면 휴식행동은 12수 방사구에 비해 9수 및 15수 방사구에서 현저히 길게 나타났다(P<0.05). 방사오리가 가장 활발한 활동을 보이는 일중 6시간 동안의 이동 회수는 15수 방사구에서 가장 적었고 나머지 3처리구간에서는 거의 비슷한 수준을 보였다. 잠수회수는 9수 방사구에서 다른 3처리구에 비해 유의적으로 많았으며(P<0.01), 벼 포기 쪼는 회수도 9수 방사구에서 12수 및 15수 방사구에 비해 현저히 많았다(P<0.05). 그러나 오리가 쪼은 총 벼포기수에서는 방사밀도가 낮은 6수 및 9수 방사구에 비해 15수 방사구에서 유의적으로 많았다(P<0.01). 벼 초장은 오리 방사후 30일째부터 방사밀도가 높을 수록 짧아지는 경향을 보였고(P<0.05), 莖數는 방사밀도에 의해 대차없었다. 출수후 벼 생육변화에서 稈長은 방사밀도가 높은 12수 및 15수 방사구에서 짧았고(P<0.05), 穗長은 오리 방사밀도에 의해 대차없었다. 벼 지상부의 건물중량은 방사밀도가 높을 수록 낮은 값에 편중됨을 보인 반면, 지하부의 건물중량은 증가하는 경향을 나타냈다. 오리 방사밀도에 따른 벼 결주발생수은 15수 방사구에서 가장 많았고, 다음으로 6수, 9수 및 12수의 순으로 나타났다. 한편 穗當 영화수는 6수 및 9수 방사구에 비해 12수 및 15수 방사구에서 유의적으로 많았고(P<0.05), 등숙율은 다른 3처리구에 비해 15수 방사구에서 낮은 경향을 보였다. 10 a당 수량은 12수 방사구에서 726.5 ㎏으로 가장 높은 수량증가를 보였고, 다음으로 9수, 15수 및 6수 방사구의 순으로 나타났다. The current study was conducted to elucidate the optimum density of free-ranging ducks in a rice-duck farming system in terms of effects on duck behavior, and growth and yield of rice plants. Four paddy fields were used for this experiment, with 6, 9, 12 and 15 birds per plot, respectively. Ducklings at eight days of age were free ranged in experimental paddy plots (4.0 a each) on the 9th day after the transplantation of rice plants. Ducks were kept in the plot for seventy days, at which point rice plants reached the earing stage. Foraging, moving, working, resting, diving and pecking behaviors of the ducks were observed two times during the experimental period. Also, rice plant growth and yield according to the density of ducks per plot were examined. The foraging and moving behavior of free-ranging ducks in paddy fields for 12 hours during the daytime tended to be longer in the 12-bird plot, and working behavior was significantly (P<0.01) longer in the 12-bird plot than in the other three plots. The resting behavior was significantly (P<0.01) higher in the 9- and 15-bird plots than in the 12-bird plot. The frequency of moving behavior for 6 hours during the daytime in the 15-bird plot tended to be lower than that in the other three plots, but this difference was not significant. The amount of diving and pecking behavior in the 9-bird plot was significantly (P<0.05) higher than that in the other three plots, and the number of hills pecked tended to be higher with increasing of duck density. From thirty days after ducks were introduced to the paddy fields, the length of rice plants tended to be significantly (P<0.05) shorter in high free-ranging density plots as compared to low free-ranging density plots. The number of tillers per hill was not affected by the free-ranging density. The culm length of rice plants was significantly (P<0.05) shorter in the 12- and 15-bird plots than in the other two plots, however, the duck free-ranging density did not affect panicle length. The dry weight of the root of rice plants was increased with high free-ranging density, but there was no such increase in the top parts of the rice plants. The percent of rice plants badly damaged by free-ranging density tended to be lower in the order of 12-, 9-, 6- and 15-bird plots. The number of ears, ripening grains and crop yield per hill of rice plants in the 12-bird plot were significantly (P<0.05) higher than those of the other three plots. Therefore, the yield of each rice plant per 10 a was significantly increased in the 12-bird plot.
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Kodak Insight 치과필름의 방사선학적 특성에 관한 연구
송영한,신민,이병도 원광대학교 치의학연구소 2003 圓光齒醫學 Vol.12 No.1
The purpose of this study was to investigate the characteristic curve of new marketed, Insight dental X-ray film(Esatman Kodak Co. Rochester, NY, USA) Kodak Ultraspeed(DF-58), E-speed Agfa Dentus M2 and Kodak Insight(IP-21) films were radiographed with Trophy intra-oral radiographic machine. 10 steps exposure times such as 0.12, 0.22, 0.30, 0.40, 0.50, 0.62, 0.76, 1.02, 1.30, and 2.0 seconds were prepared and each step exposure were monitored onto FH 40G(ESM Eberline Instruments) dosimeter with those 4 types intra-oral films. All films were manually processed according to manufactures instruction. We measured radiographic densities of 6 sites of each processed film. Then we could make characteristic curves of 4 types intra-oral films with these dosimetric data and radiographic densities, based on ISO 5779. Base plus fog densities were measured from unexposed, processed films. We measured the film contrasts from average gradients of characteristic curves according to various radiographic density level. Film speed could be thought as an exposure of 1.0 above base plus fog density. We compared film contrast, speed and base plus fog density of Insight film with those of 3 other films. The obtained results were as follows; 1. E-speed film showed greatest average gradients followed by Insight film. E-speed and Ultraspeed film showed great average gradients on low density level. 2. Insight film showed a fastest speed followed by E-speed, Dentus M2 and Ultraspeed film 3. Dentus M2 film showed greatest base plus fog density level followed by Insight film. Therefore, Kodak Insight film showed fastest film speed with comparable film contrast on characteristic curve.
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돈분 및 남은 음식물 급여가 육계의 사료섭취 및 음수행동에 미치는 영향
송영한,김창혁,이용준,임종규,이영철 한국축산시설환경학회 1999 축산시설환경학회지 Vol.5 No.1
This study was conducted to determine the effects of dietary swine manure and food waste on feeding and drinking behaviours in broiler chicks. A total of 240 birds with 40g of initial weight were randomly assigned in the 8$\times$3 randomized complete block design and 10 birds per replicate. Extrusion recycled feeds(ERF) were prepared by extruding a mixture of 40% swine manure+40% food waste(FW)+20% corn. The birds assigned to one of the 8 dietary regimens; 0, 10, 30, 40% ERF of 20, 40, 60% FW in the place of a commercial boiler starter diet. Video recording were made after one week of adaptation period to the regimen. The tapes were played in a slow motion to examine feeding and drinking behaviour. Feeding and drinking times were greater in the day time at the night. Feeding times peaked at 4 hour intervals. Drinking time increased about 2 times on FW feeding compared to the other treatment groups. The results indicated that feeding and drinking behaviour could be influenced by the dietary regimens and that FW feeding increased drinking. The data also suggested that the FW could replace within 40% of broiler starter diet.
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송영한,고병대,정지동,Song, Young-Han,Ko, Byeong-Dae,Chung, Ji-Dong 한국축산환경학회 1996 축산시설환경학회지 Vol.2 No.2
An experiment was carried out to study the effect of environmental color on the eating behaviour in broiler chicks. A total of ninety broilers with average 350g of initial body weight were randomly assigned in the $3{\times}3$ randomized complete block design with 3 treatments(yellow, blue, red) and 10 birds per replication of various environmental color at walls, feeders and electric bulbs. The results obtained from these experiments are summarised as follows: 1. Feed Intake and average daily gain were significantly(P<0.05) increased by yellow colored environment. 2. Eating time and eating rate were significantly higher in the red colored than the other, indicating that yellow colored environment would maximize body weight gain and feed conversion for broiler chicks.
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쥐의 뇌 미토콘드리아 알데히드탈수소효소의 정제와 특성에 관한 연구
송영한,주충노,Song, Young-Han,Joo, Chung-No 생화학분자생물학회 1991 한국생화학회지 Vol.24 No.6
쥐의 뇌 미토콘드리아에서 알데히드탈수소효소(ALDH)를 추출, 정제하고 특성을 조사 하였다. 쥐의 뇌 미토콘드리아에는 적어도 3가지 isozyme이 존재한다. 가용성 ALDH-I은 $NAD(P)^+$ 의존성이며 succinic semialdehyde에 대한 $K_m(2.9{\times}10^{-6}M)$은 낮지만 acetaldehyde에 대한 $K_m$($10^{-3}M$ 수준)은 비교적 높다. 그러나 또 하나의 가용성 ALDH는 succinic semialdehyde와 반응하지 않았다. 막결합 ALDH도 succinic semialdehyde에 대한 $K_m$이 낮지만 반응속도가 느리고 그의 $V_{max}/K_m$는 가용성 ALDH-I의 1/25에 불과하였다. 또한 ALDH-I은 acetaldehyde에 의해 상당히 억제된다. 이와 같은 결과로 보아 ALDH-I는 GABA 대사에 관여하며 과음으로 인한 생리장해와 연관된다고 생각된다. Rat brain mitochondrial aldehyde dehydrogenast isozymes were purified and characterized. There were at last three mitochondrial ALDH isozymes. The soluble ALDH-I was $NAD(P)^+$ dependent and it has a very low $K_m(2.9{\times}10^{-6}M)$ for succinic semialdehyde but it has a relatively high $K_m$($10^{-3}M$ level) for acetaldehyde. However, another soluble ALDH isozyme did not react with succinic semialdehyde. The membrane bound ALDH also has a very low $K_m$ for succinic semialdehyde, however, its reaction rate was slow and its $V_{max}/K_m$ value was only 1/25 that of the soluble ALDH-I. The soluble ALDH-I was significantly inhibited by acetaldehyde. It seemed that ALDH-I might be involved in GABA metabolism related with physiological disturbance caused by over consumption of ethanol.
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쥐의 뇌 미토콘드리아 알데히드탈수소효소의 정제와 특성에 관한 연구
송영한,주충노 ( Young Han Song,Chung No Joo ) 생화학분자생물학회 1991 BMB Reports Vol.24 No.6
Rat brain mitochondrial aldehyde dehydrogenast isozymes were purified and characterized. There were at last three mitochondrial ALDH isozymes. The soluble ALDH-I was NAD(P)^+ dependent and it has a very low K_m (2.9×10^(-6)M) for succinic semialdehyde but it has a relatively high K_m (10^(-3)M level) for acetaldehyde. However, another soluble ALDH isozyme did not react with succinic semialdehyde. The membrane bound ALDH also has a very low K_m for succinic semialdehyde, however, its reaction rate was slow and its V_(max)/K_m value was only 1/25 that of the soluble ALDH-I. The soluble ALDH-I was significantly inhibited by acetaldehyde. It seemed that ALDH-I might be involved in GABA metabolism related with physiological disturbance caused by over consumption of ethanol.
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