• KOREAN POULTRY JOURNAL
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• v.30 no.10 s.348
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• pp.77-81
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• 1998

조사는경기, 충남북, 전남북 등지의 총 86개 농가에서 이루어 졌으며 86개 농가를 규모별, 계사별로 분석하여 보면, 농가규모는 3만수 미만이 전체의 $\32%$로 28농가, 3만수에서 5만수 미만이 $\50%$로서 43농가, 5만수 이상이 $\17%$로서 15농가이며, 3만수 미만의 평균사육수수는 2만 2천수, 3만수 이상 5만수 미만은 3만 6천수, 5만수 이상은 6만 1백수로 나타났다. 계사 형태의 유형은 개방계사가 전체의 $\51%$로 44농가, 발효계사가 $\34%$ 29농가, 무창계사 $\15%$ 13농가로 평균사육수수는 개방계사 3만 3천수, 발효계사 3만 5천수, 무창계사 4만 9천수이다. 설문조사 분석은 총 86개 농가에 대한 내용으로 이루어 졌으며 계사별, 규모별에 따른 차이점도 함께 알아보았다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.12a
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• pp.262-269
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• 1999

• KOREAN POULTRY JOURNAL
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• v.51 no.6
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• pp.132-135
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• 2019

2017년 계란 살충제 파동 이후 계란에 대한 소비자의 관심이 급증하고 있다. 안전성과 영양을 바탕으로 한 계란의 브랜드화에 대한 소비자의 수요가 많아졌다. 이에 본지는 무창계사에서 동물복지농장으로 바꾸며 자신만의 브랜드란을 생산하는 이삭농장을 다녀왔다.

• Journal of Animal Environmental Science
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• v.14 no.1
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• pp.39-46
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• 2008

Experiments were carried out to evaluate the air speed distribution of an enclosed growing-finishing pig house in summer and winter. The data taken by experiments were compared to validate with the calculated air speeds by a commercial CFD code, FLUENT. Air basically enters into the house through Baffled slot Inlet and leaves through a exhaust fan attached on the Exhaust fan in exiting wall of the house. Air speeds were measured as $2{\sim}2.5m/s$ at the two side slot in winter and 0.8 m/s in summer. The validation showed that a CFD simulation is one of feasible methods to predict airspeed distribution in the growing-finishing pig house.

• Journal of agriculture & life science
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• v.50 no.2
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• pp.187-194
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• 2016

The purpose of this study was to analyze temperature distribution characteristics using a model swine housing for temperature sensor adjustable positioning and developed a sensor and controller embedded exhaust fans utilizing ICT fusion technology for windowless swine housing. Temperature measured by the sensor attached on the exhaust fan was also determined that there is no problem, the temperature is located in the upper fan given the measured errors shown in the 1℃ temperature difference between the lower temperature than the other positions in the model swine housing. The performance of the exhaust fan at maximum output was found to be 1920rpm, air flow rate 125㎥/min. When the open area ratio of 70% one proper air volume of the exhaust fan was found to be 75㎥/min, 60pa. Maximum efficiency in all of the output of the exhaust fan is exhibited at about 70% open area ratio of the damper. The number of revolution of the exhaust fan was 1920rpm when the output was a maximum of 100%. AC output phase of the pulse duty ratio change of the controller was shown to change without delay. It was determined that the instant fan speed control is possible.

• Journal of Animal Science and Technology
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• v.46 no.3
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• pp.459-468
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• 2004

An experiment was conducted to establish comparison of ventulation efficiency in an enclosed and conventional growing-finishing pig house. The main results of the experiment are as follows : In the established temperature was sustained at the level of summer 24.8${\sim}$29.1$^{\circ}C$, winter 17.9${\sim}$23.1$^{\circ}C$ during the experimental period of enclosed growing-finishing pig house, and conventional growing-finishing pig house was at the lovel of summer 24.7${\sim}$32.3$^{\circ}C$, winter 14.5${\sim}$18.2$^{\circ}C$ during the experimental period respectively. As for the results of dertimental gas(ammonia) concentration ratio analysis, while the conventional pig house sustained of summer 9.3${\sim}$16.9 mg/$\ell$ level, enclosed growing-finishing pig house sustained of summer 7.9${\sim}$16.1 mg/$\ell$, and the latter one is lower than that of the conventional growing-finishing pig house. Air flow rate on the floor level which is the low part of pen and the active area of pigs in the enclosed growing and finishing pig house during winter was measured at 0 to 0.87 m/s at the 0.01 to 2.73 m/s at the maximum ventilation efficiency. As for breeding pigs in summer, the pigs from the conventional pig house weighed 100.2kg, on the other hand, the pigs from enclosed growing-finishing pig house weighed 107.3 kg ; the differnce between the two kinds was about 7 kg. This was because the most adequate environment, which was not influenced by the exterior atmosphere, was offered to the pigs from enclosed growing-finishing pig house, and all of this could reduce pigs stress effectively.

• Korean Journal of Poultry Science
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• v.33 no.1
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• pp.57-63
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• 2006

This study was conducted to investigate the effect of ventilating system of environmental controlled broiler house on broiler production. Three hundred eighty four broiler chicks (Hubbard, mean live weight of $44.5{\pm}2.0g/bird$) were reared for 2 wk. The results of the present study were summarized as follows : 1. Ammonia gas production was lower in the second and the third floors of cages compared with first floor of cages 13.5 and 13.5 vs 14.6 ppm, respectively). The observations of ammonia production in the morning and afternoon were similar. The production of carbon dioxide was not different between morning and afternoon, but it was tended to decrease in the forth floor of cages due to a fresh air 2. A wind velocity in the enclosed house was similar across lower, middle and upper section (0.57m/sec, 0.22m/sec and 0.04msec, respectively). In order to maintain an optimal air flow velocity in the cages, the duct entrance was punched, and then the air flow was full-round in the overall space in the cage. 3. Daily liveweight gain, feed intakes, and feed efficiency were not significant differences among treatments during whole experimental period (P>0.05). Therefore, the present results showed that temperature, moisture and atmosphere controlling were desirable, and air flew evenly in the cage.

• Journal of Animal Environmental Science
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• v.10 no.1
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• pp.23-28
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• 2004

This study was conducted to improve a ventilation system on the enclosed farrowing-nursery pig house in Korean swine facilities. This survey ventilation system types four major structures. The first structure has planer slot inlet, where air comes in, and these are placed outside the wall under the eave. Then the air from the pig house flows out through the chimney outlet operated by an exhaust fan(V1). The second structure has an air input through the perforated ceiling inlet, then the air from the pig house flows out through the chimney outlet operated by an exhaust fan(V2). Through the circular duct inlet placed inside the juncture of the entry wall, air also comes in(third structure). Then, air from the pig house flows out through the chimney outlet operated by an exhaust fan(V3), Similarly, air comes in through the circular duct inlet placed inside the juncture of the entry wall, but air from the pig house flows out through the side wall by an exhaust fan(V4). Temperature, relative humidity, air velocity and ammonia concentration(NH$_3$) were measured in the interior farrowing-nursery pig house during winter. The results were as follows; Interior temperature at the pig house was not remarkably different in all ventilation systems. The V4 system had low area air velocity, and this was better than other systems. It also had a lower ammonia concentration than other systems. V3 and V4 systems had stable airflow patterns, better than other systems. Therefore, it is suggested that the V3 and V4 ventilation system be applied in the enclosed farrowing-nursery pig house in winter.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.12a
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• pp.270-277
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• 1999

• KOREAN POULTRY JOURNAL
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• v.42 no.10
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• pp.118-121
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• 2010

축산업에 애착을 갖고 22년째 육계를 사육하는 농장이 있다. 용인시 처인구 원삼면에 위치한 유연농장(사장 김유연)으로 총 9만수를 연간 5.5회전으로 사육하고 있다. 최근 무창계사 신축을 짓고 사육방법을 전환해 농장관리로 바쁜 시간을 보내고 있다. 더불어 금년 6월 HACCP 인증을 받아 친환경사육에 관심을 갖고 있는 이 농장을 찾아 인터뷰한 내용을 정리하였다.