깔짚우사 내 젖소분뇨 발생량 평가

조현수,이승훈,이재희,안희권,Jo, Hyun-Soo,Lee, Seung-Hun,Lee, Jae-Hee,Ahn, Hee-Kwon 한국축산환경학회 2015 한국축산시설환경학회지 Vol.21 No.1

This study was conducted to determine the amount of manure production from Holstein dairy cattle raised in bedded pack barn and the appropriate bedding material removal time. Total six heads of dairy cows (about 715 kg weight) were raised in three pens (two heads per pen) for 62 days. Average daily production of manure containing sawdust bedding was 21.2 kg per head and that of manure excluding bedding was 18.7 kg. Moisture content of bedding materials were significantly increased up to 86% of water holding capacity (WHC) of sawdust during the first 30 days. It kept very stable level after 30 to 50 days. Theoretically, 30 days after adding fresh bedding seems to be proper removal time only based on WHC. On the other hand, from a practical perspective, maximum 50 days after adding new bedding would be fine by comprehensively considering various factors such as bedding material purchasing cost, feeding environment and manure treatment.

마분 퇴비 시용 수준이 이탈리안 라이그라스 생산성과 용탈수 성분에 미치는 영향

유지현,박남건,우제훈,안희권,양병철,Yoo, Ji-Hyun,Park, Nam-Geon,Woo, Jae-Hoon,Ahn, Hee-Kwon,Yang, Byoung-Chul 한국초지조사료학회 2020 한국초지조사료학회지 Vol.40 No.2

국내에서 말 사육 두수가 가장 많고 화산회토양으로 이루어져 있는 제주도에서 마분 퇴비의 시용수준이 이탈리안 라이그라스의 생산성과 수질 환경에 미치는 영향을 알아보기 위해 본 연구를 수행하였다. 사료작물은 이탈리안 라이그라스(코윈어리)를 공시하였고 용탈수 성분 분석을 위해서 간이 Lysimeter를 제작하였다. 퇴비 시용 수준에 따라 6처리하였고, 이탈리안 라이그라스의 수량 등 생산성을 조사하였다. 용탈수는 7회 채취하여 NO₃-N, PO₄-P, Cr, Cu, Zn을 분석하였다. 마분 퇴비 시용 수준에 따른 이탈리안 라이그라스의 건물 수량은 화학비료구가 유의적으로 가장 높게 나타났고(11,965±564 kg/ha), 마분 퇴비 150%, 혼용구가 그 다음으로 유의적으로 높게 나타났으며(9,043±681 kg/ha, 8,825±611 kg/ha), 마분퇴비 100%, 50%가 그 다음으로 나타났다(4,293±804 kg/ha, 2,986±739 kg/ha)(p<0.05). 용탈수의 분석항목 중 질산태 질소(NO₃-N)의 경우 3차 분석까지는 전체적으로 증가하다가 감소하는 경향을 보였고 마지막 6, 7차 분석 시에는 검출되지 않았다(Fig. 2.). NO₃-N는 처리구 간에 유의적인 차이는 없었으나 수치적으로 마분 퇴비 150% 시용구에서 NO₃-N가 가장 많은 경향이 나타났고, 화학비료구와 혼용구는 수치적으로 마분 퇴비를 시용했을 때보다 적거나 비슷한 수준을 나타났다. NO₃-N를 제외한 나머지 PO₄-P, Cr, Cu, Zn은 전 기간 거의 검출되지 않았다. 본 연구 결과를 종합했을 때 마분 퇴비를 시용할 때는 기비로 마분 퇴비를 질소 기준 50%수준 시비하고 이듬해 봄 추비로 화학비료를 나머지 50% 수준으로 시비하면 수량이 크게 떨어지지 않으면서 수질 오염에도 상대적으로 적은 영향을 줄 수 있을 것으로 사료된다. This study was conducted to figure out the productivity of Italian ryegrass(IRG) and leaching water characteristics based on horse manure compost level in Jeju. This study was conducted for about six months. Six treatments were established : non-fertilizer(NF), chemical fertilizer 100%(CF), horse manure compost 50% and chemical fertilizer 50% combination(Combination), horse manure compost with 50% of nitrogen (50%), 100% of nitrogen(100%), 150% of nitrogen(150%). The highest amount of dry matter yield of IRG was revealed in CF(11,965±564 kg/ha), and both 150% and Combination were second(p<0.05). Nitrate leaching tended to increase until the third analysis and then decreased. There were not significantly differences among mean nitrate concentrations. The findings of the study suggest that horse manure compost with 50% of nitrogen be applied for IRG as basal fertilization and then 50% of chemical fertilizer be applied as top fertilization.

젖소분뇨 퇴비화에 대한 부숙퇴비 혼합 효과

김중곤,곽정훈,정광화,한덕우,유병기,안희권,라창식,Kim, Jung Kon,Kwag, Jung-Hoon,Jeong, Kwang-Hwa,Han, Deug-Woo,Yu, Byeong-kee,Ahn, Hee-kwon,Ra, Chang-Six 한국축산환경학회 2015 한국축산시설환경학회지 Vol.21 No.3

According to the volumetric mixing rate of dairy cow manure (DCM) and moisture control materials such as decomposed manure (DM) and sawdust (S), 6 reactors (DCM only (R1), DCM : DM = 1:1 (R2), DCM : DM = 1.5:0.5 (R3), DCM : DM = 0.5:1.5 (R4), DCM : DM:S = 1:0.5:0.5 (R5) and DCM : S = 1:1 (R6)) were used for composting of dairy cow manure. Among the composting reactors, composting reactor of R5 was shown the highest temperature of the compost as a $66^{\circ}C$ during composting period. After 3 weeks composting, moisture content of R5 and R6 were 51% and 51.3%, respectively. These values were satisfied with the moisture content standard of livestock manure compost of Korea. We concluded that decomposed manure may be a good moisture control material for dairy cow manure composting when it is used in mixture with sawdust. The optimum volumetric mixing ratio of dairy cow manure and moisture control materials was 50% of livestock manure, 25% of decomposed manure and 25% of sawdust.

돈분뇨 액비의 폭기수준에 따른 여름철 온실가스 배출량 비교

최동윤,박규현,조성백,양승학,황옥화,곽정훈,안희권,유용희,Choi, Dong-Yoon,Park, Kyu-Hyun,Cho, Sung-Back,Yang, Seong-Hak,Hwang, Ok-Hwa,Kwag, Jung-Hoon,Ahn, Hee-Kwon,Yoo, Yong-Hee 한국축산환경학회 2011 축산시설환경학회지 Vol.17 No.3

본 시험은 돈분뇨 액비에서 발생하는 온실가스 ($CH_4$, $N_2O$) 발생량을 조사하기 위해 수행하였으며, 처리구별로 메탄 및 아산화질소의 발생량을 비교한 결과는 다음과 같다. 돈분뇨 액비에서 발생하는 메탄량은 단순 저장, 폭기 1.0, 폭기 2.5, 폭기 $5.0m^3$/톤/시간 처리구에서 각각 315.6, 13.9, 17.9, $9.6{\mu}g/m^2/s$, 아산화질소량은 각각 0.173, 0.157, 0.131, $0.241{\mu}g/m^2/s$로 나타났으며, 이를 이산화탄소 발생량으로 환산하면, 각각 6,618.4, 340.8, 416.0, $276.4{\mu}g/m^2/s$였다. 또한 폭기처리 시 전기 사용에 따른 이산화탄소 발생량은 각각 0, 81.6, 204.0, $407.9g/m^2$/일로 나타났다. 따라서 전기사용량을 고려한 돈분뇨 액비화 과정의 폭기처리 수준에 따른 총 이산환탄소 발생량은 각각 577.3, 111.0, 239.9, $431.8g/m^2$/일로서 돈분뇨 액비화 처리과정시 호기적 처리를 하게 되면 단순저장에 비해서 메탄 및 아산화질소 등의 온실가스 발생량이 저감되는 것으로 조사되었으며 적절한 폭기량은 $1.0{\sim}2.5m^3$/톤/시간으로 나타났다. This study was carried out to investigate greenhouse gas (GHG), $CH_4$ and $N_2O$, emission from liquid swine manure according to aeration levels in summer. To evaluate the influence of operation methods on GHG emissions, liquid swine manure were applied with different rates of aeration (store without aeration, $1m^3/ton/h$, $2.5m^3/ton/h$, and $5m^3/ton/h$). Following are the results of this study. The liquid swine manure applied no aeration, $1m^3/ton/h$, $2.5m^3/ton/h$, and $5m^3/ton/h$ aeration rates released 315.6, 13.9, 17.9 and $9.6{\mu}g/m^2/s$ of $CH_4$ and 0.173, 0.157, 0.131, and $0.241{\mu}g/m^2/s$ of $N_2O$, respectively. Liquid swine manure applied no aeration released the most amount of GHG ($6,681.4{\mu}g/m^2/s$ $CO_2$-Eq.) and followed by $5m^3/ton/h$ ($276.4{\mu}g/m^2/s$ $CO_2$-Eq.), $2.5m^3/ton/h$ ($416.0{\mu}g/m^2/s$ $CO_2$-Eq.), and $1m^3/ton/h$ ($340.8{\mu}g/m^2/s$ $CO_2$-Eq.). Our results reveal that the aerated system may reduce GHG emissions compared to no aeration. Consequently, aeration and mixing were effective at reducing GHG emissions during liquid swine manure storage.

젖소분뇨로부터 최대 바이오가스 생산과 유기물 제거효율을 달성하기 위한 반건식간헐주입 연속혼합 혐기성반응조의 최적 수리학적 체류시간 도출을 위한 연구

강호(Ho Kang),김선우(Sun Woo Kim),정지현(Ji Hyun Jeong),안희권(Hee Kwon Ahn),정광화(Kwang Hwa Jung) 大韓環境工學會 2015 대한환경공학회지 Vol.37 No.12

본 논문은 톱밥 깔개 젖소분뇨 TS 13%를 반건식 간헐주입 연속혼합 반응조(Semi-Continuously Fed and Mixed Reactor, SCFMR)에 주입하여 신재생에너지인 바이오가스의 생산성과 TVS 제거효율을 비교?평가하여 최적 운전조건을 도출하고자하였으며, 그 연구결과를 요약하면 다음과 같다. 톱밥 깔개 젖소분뇨 주입 TS 13%의 반건식 SCFMR의 운전결과 HRT 25일(OLR 4.40~4.50 kg VS/m3-day)에서 최대 바이오가스 발생량 1.44 v/v-d와 CH₄ 발생량 1.12 v/v-d를 달성하였으며, 이 때 TVS제거효율은 바이오가스 발생량 기준 37%이었다. 이는 톱밥 깔개 젖소분뇨 1일 100 kg 주입 시 3.60 m3의 바이오가스를 생산하는 결과이다. 높은 유기물 부하율인 OLR 4.45 kg VS/m3-day (HRT 25일)에서 SCFMR의 운전이 안정적인 이유는 주입시료인 톱밥 깔개 젖소분뇨가 갖고 있는 높은 Alkalinity 농도 때문이다. 그 결과 반응조의 Alkalinity는 14,500~15,600 mg/L as CaCO₃ 범위이었으며, 반응조의 안정성을 평가하는 V/A 비는 평균 0.11, P/A 비는 평균 0.43을 유지하였다. This study was carried out to evaluate the optimum operational condition of Semi-continuously Fed and Mixed Reactor (SCFMR) to treat the dairy cow manure and saw dust mixture. Step-wise increase in organic loading rates (OLRs) or decrease in hydraulic retention times (HRTs) were utilized until the biogas volume became significantly decreased at mesophilic temperature (35℃). The optimum operating condition of the SCFMR fed with TS 13% dairy cow manure and saw dust mixture was found to be an HRTs of 25 days and its corresponding OLRs of 4.45 kg VS/m3-day. At this condition the biogas and methane production rates were 1.44 v/v-d and 1.12 v/v-d (volume of biogas per volume of reactor per day), respectively and the TVS removal efficiency of 37% was achieved. The successful operation with such a high OLR was due to the high reactor alkalinity concentration of 14,500~15,600 mg/L as CaCO₃ as a result of the characteristic of the original substrate, dairy cow manure and saw dust mixture whose alkalinity was more than 8,000 mg/L as CaCO₃. The parameters for the reactor stability, the ratios of volatile acids and alkalinity concentrations (V/A) and the ratio of propionic acid and acetic acid concentrations (P/A) appeared to be 0.11 and 0.43, respectively, that were greatly stable in operation. Free ammonia toxicity was not experienced due to the long term acclimation by the reactor TS content ranged 7.2~10.4% during the entire operational period.

폭염시 착유우 고온스트레스 경감을 위한 빗물관수시스템 이용 효과

최동윤,조성백,박규현,양승학,황옥화,곽정훈,정광화,송준익,유용희,안희권,Choi, Dong-Yoon,Cho, Sung-Back,Park, Kyu-Hyun,Yang, Seong-Hak,Hwang, Ok-Hwa,Kwag, Jung-Hoon,Jeong, Kwang-Hwa,Song, Jun-Ik,Yoo, Yong-Hee,Ahn, Hee-Kwon 한국축산환경학회 2012 축산시설환경학회지 Vol.18 No.suppl.

본 연구는 우리나라 여름철 고온기, 특히 폭염 시에 젖소의 생산성을 유지시켜 주기 위한 방법으로 빗물저장시스템을 이용하여 착유우사 지붕에 저장빗물 관수를 실시했을 때와 실시하지 않았을 때의 우사내외 온도, 착유우 산유량, 호흡수 및 직장온도 등의 변화를 측정하여 비교하였다. 1. 사료섭취량은 옥수수사일리지의 경우, 우사지붕에 관수를 하지 않았을 때는 29.7 kg을 섭취한 반면에 관수를 했을 때는 34.9 kg을 섭취했으며, 농후사료는 각각 9.2, 10.2 kg을 섭취하였다. 2. 우사지붕에 관수를 했을 때와 관수를 하지 않았을 때의 온도를 상호비교를 해 보면, 우사지붕의 온도는 관수를 했을 때는 관수를 하지 않았을 때보다 $3.6^{\circ}C$가 낮았고, 우사 내부의 온도도 $4.4^{\circ}C$가 낮았다. 3. 시험기간 중 두당 일평균 산유량을 보면 우사지붕에 관수를 하지 않았을 때는 24.5 kg으로 조사되었고, 관수를 했을 때는 27.4 kg으로 조사되어 관수를 실시했을 경우, 관수를 하지 않았을 때보다 11.8%의 산유량이 증가하는 효과를 보였다. 4. 착유우 호흡수는 우사지붕에 관수를 하지 않았을 때는 114.0회/분으로 조사되었고, 관수를 했을 때는 96.7회/분으로 조사되었으며, 관수를 실시했을 경우, 관수를 하지 않았을 때보다 호흡수가 감소하는 결과를 보였다. 5. 착유우의 직장온도는 우사지붕에 관수를 하지 않았을 때는 $40.6^{\circ}C$로 조사되었으나, 관수를 했을 때는 $39.8^{\circ}C$로 조사되어 관수를 하지 않았을 때보다 직장온도가 $0.8^{\circ}C$ 감소하는 결과를 보였다. 이상의 결과를 종합하면, 여름철 폭염기에 착유우의 고온스트레스를 경감시켜 착유우의 생산성을 지속시키기 위해서는 빗물저장시스템을 이용하여 우사 지붕을 관수하는 것이 효과적인 것으로 나타났다. Since the temperature during summer is higher than the temperature which is suitable for milking cows, high temperature stress have severely affected dairy farmers due to decreased milk production. This study was carried out to investigate the effect of rainwater sprinkling system for reducing heat stress in milking cows during intense heat time. Treatment conditions were divided into 2 types ; No rainwater sprinkling (T1) and Rainwater sprinkling (T2). Temperature in the milking cow shed, feed intake, milk yield, respiration rate and rectal temperature were measured to investigate the effect of hot environment on the physiological, productive responses in milkig cows. The results obtained are summarized as follows : The daily milk yields were 24.5 and 27.4 kg per head in T1 and T2 during experimental period. The respiration rate was significantly higher in T1 than those of T2. The rectal temperature in T1 ($40.6^{\circ}C$) was higher than those of T2 ($39.8^{\circ}C$). It was suggested that rainwater sprinkling system installed in the dairy cow shed was effective means to reduce heat stress of milking cow.

축산분뇨 혐기소화 잔재물의 특성 및 초지 적용성 평가

김승민(Seung Min Kim),정웅기(Woong-gi Jung),성용주(Yong Joo Sung),안희권(Hee-Kwon Ahn),김동성(Dong Sung Kim),윤도현(Do-Hyun Yoon),김동섭(Dong-Seop Kim1),정광화(Hwa Gwang Jung) 한국펄프·종이공학회 2014 펄프.종이기술 Vol.46 No.3

췌장의 점액성 낭선종

윤환곤(Whan Gon Yoon),추무엽(Moo Youp Choo),황교승(Kyo Seung Hwang),권영철(Young Cheol Kwon),김경태(Kyung Tae Kim),전재민(Jae Min Jeon),신선영(Sun Young Shin),최성근(Seong Kuen Choi),이윤석(Yun Suk Lee),안희권(Hee Kwon Ahn),이주택(Ju 대한소화기학회 1994 대한소화기학회지 Vol.26 No.1

Pancreatic cystadenoma is a very rare slow-growing cystic lesion that only about 350 cases were reported in the literlatures. The lesions occur predominantly in late middle aged woman characterized by a slowly growing palpable mass in the epigastrium. The etiology of the cyst- adenoma is still obscure. Pancreatic mucinous cystadenoma occur predominantly in the tail and the body of the pancreas. Pancreatic mucinous cystadenoma has a definite malignant po- tential in contrast to microcystic(serous) cystadenoma which is benign and then total excision is the ideal treatment for pancreatic mucinous cystadenoma. A 54 year old woman patient was admitted to this hospital with the complaints of epigastric discomfort and the discovery of a slow-growing palpable mass in left upper quadrant abdomen for the preceding 7 years. Exploratory laparatomy was performed which disclosed a smooth cystic mass about 15cm in diameter in the tail of the pancreas. The cut surface of the turnor showed multiple cyst containing gray mucinous fluid. The mass was adhered to the stomach and jejunum. For the complete excision of the tumor, distal pancreatectomy and splenectomy were performed. Histopathological examination confirmed the mucinous cystadenoma of the pancreas.(Korean J Gastroenterol 1994; 26: 210 213)

외식산업분야키오스크(KIOSK) 현황과소비자만족에관한 인식 비교연구-프랜차이즈 업체를 중심으로-

최다정(Choi Da-jeong),이영주(Lee Young-ju),김현중(Kim Hyun-jung),장은주(Jang Eun-ju),안희권(Ahn Hee-kwon),이영선(Lee Young-sun) 한국관광서비스학회 2018 한국관광서비스학회 학술대회 Vol.2018 No.-

축산환경 : 부자재 종류가 친환경적 사축퇴비화에 미치는 영향

원승건 ( Seung Gun Won ),박지영 ( Ji Young Park ),조원실 ( Won Sil Cho ),곽정훈 ( Jung Hoon Kwag ),최동윤 ( Dong Yoon Choi ),안희권 ( Hee Kwon Ahn ),라창식 ( Chang Six Ra ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5

To develop a sustainable composting method for livestock mortality, a natural aeration-composting process was designed and the influences of bulking materials on the mortality composting process were studied. Bulking materials(e.g., compost, swine manure, sawdust, and rice husks), easily supplied at the scene of an animal mortality outbreak, were tested in this research. A lab-scale composting system(W34×L60×H26cm) was made using 100mm styrofoam, and natural aeration was achieved through pipes installed on the bottom of the system. Four treatments were designed(compost, compost+swine feces, sawdust, and rice husks treatment groups) and all experiments were done in triplicates. During composting for 40 days, no leachate was observed in compost and sawdust treatment groups, whereas 18 and 8.2 ml leachate/kg-mortality was emitted from the compost + feces and rice husks treatment groups, respectively. Dimethyl disulfide(DMDS) emission during the composting was very low in all treatment groups, possibly due to the bio-filtering function of the compost cover layer on the pile. The mortality degradability in compost, compost+feces, sawdust, and rice husks groups was 25.3, 25.8, 13.5, and 14.5%, respectively, showing significantly higher levels in compost and compost+ feces groups(p<0.05). Also, only the compost+feces group produced enough heat(over 55℃) and lasted for 7 days, indicating that bio-security cannot be guaranteed without feces supplementation.