• Journal of Animal Environmental Science
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• v.15 no.3
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• pp.189-198
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• 2009

This survey was conducted to investigate the situation of housing type in poultry farms in Korea. The number surveyed among the farm size over 30,000 heads was 1,965 farms. Poultry housing types of windowless, open sided, vinyl house type were 19.0, 47.7, 19.8%, respectively. Waterers of nipple, bell, and 8 feet trough used in smaller than 50,000 heads of poultry farm were 40.6, 11.3 and 42.8%, respectively. But the bigger farm in the farm size of over 100,000 heads used more nipple waterer. Feeders of disk, hopper and chain used in poultry farm were 54.5, 16.3, 15.8%, respectively. Manure collecting system of scraper and belt was 29.4, 71.5 %, respectively. Ventilation systems of natural ventilation, natural + mechanical ventilation, mechanical ventilation were 40.5, 39.8, 20.7%, respectively.

• Proceedings of the Korea Society of Poultry Science Conference
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• 2001.11a
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• pp.107-109
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• 2001

Survey questionnaires were collected from broiler farmers and analysed in this study to find out ways to respond to the open international chicken trades-chicken marketing plan and market price control. Broiler farm production and management were analyzed and it was found that number of chicken produced per farm was related to systematic and strategic level of farming such as chicken housing, technical problems, and cost of production.

• 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.

• KOREAN POULTRY JOURNAL
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• v.42 no.7
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• pp.118-120
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• 2010

경기도 포천시에서 21년째 육계를 사육하는 농장이 있다. 4만5천수 사육에서 금년 초 11만수 규모의 최신식 무창계사를 신축해 첫 출하한 초가농장을 소개하고자 한다. 친환경 사육조건을 갖춰 청정육을 공급하고자 무항생제 인증과 HACCP인증을 준비 중인 이 농장은 최신식 계사 설비나 주변 환경 등 내 외부 청정화 사육환경을 조성해 아름다운농장 가꾸기를 실천하고 있다. 대한양계협회 포천채란지부장이자 포천축협 감사 등 지역 양계산업 발전을 위해 활동하는 초가농장 정영상 대표를 만나 보았다.

• KOREAN POULTRY JOURNAL
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• v.44 no.3
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• pp.128-132
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• 2012

난가공 전문회사 농업회사법인 세양(주)은 친환경 신선한 계란을 생산하기위해 21만수 규모의 산란계농장을 설립했다. 지난해 3월 충북 음성군 삼성면에 착공을 시작으로 그해 10월 첫입식과 함께 지금은 한창 산란피크를 올리고 있다. 이 농장은 1개동 계사에 21만수 전수사육이 가능하도록 최신식 무창계사를 신축했고, 무엇보다 환기와 차단방역에 중점을 둔 시설설비로 총 74억 원의 어마어마한 투자 비용이 소요되면서 주목받고 있다. 농업회사법인 세양(주) 음성농장(이하 음성농장)의 강구만 대표를 만나 농장에 대해 보다 자세히 들어 보았다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2003.02a
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• pp.171-176
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• 2003

육계사의 대형화에 따른 최적환경조성의 중요성이 대두되고 있어서, 이에 따른 적합한 시설환경이 더욱 요구되고 있으나 적정환기가 이루어지지 않아 육계의 생산성 향상에 어려움이 많이 있다. 국내 대형육계사내 최적환경제어를 위한 주요환경변수의 기초자료가 매우 부족한 실정이다. 최 등(1999)은 육계사의 대표적인 여러 계사구조에서 온도, 습도, 유해가스농도 및 육계의 체중, SDS 발생율 및 폐사율, 도체이상 발생율 등을 조사하였다 황보 등(2002)은 3(W)$\times$5(L)$\times$3(H)의 무창계사에서 환경요소 중에 온도, 습도, 공기유속을 분석하여 환경효율을 조사하였다. 대부분의 관련연구들의 자료로는 계사내 환경 균일성, 적정성, 안정성 등을 효과적으로 분석하는 것이 어려웠다. (중략)

• 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.

• 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.

• Korean Journal of Poultry Science
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• v.46 no.2
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• pp.55-63
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• 2019

This study was conducted to evaluate animal welfare approved farms in three housing systems (open, windowless, and free-range). The survey was conducted in 25 animal welfare approved farms, and 10 farms were surveyed for distribution status. The main breed in all animal welfare approved farms of laying hens was Hy-Line Brown variety. In the case of open house, laying hens were bred in traditional and panel houses simultaneously; however, the ratio of panel house was 58.3%, which was higher than that of the traditional house. All the windowless houses were made of panels and more than 15,000 laying hens were housed in a single windowless house. In the case of free-range house, it was maintained on a small scale of less than 12,000 birds. Fifty-six percent of the surveyed farms were breeding at $7{\sim}8birds/m^2$. In terms of male and female ratios, most farms maintained 1 male:15 females, but there was a farmhouse that switched 17 or 20 females to 1 male. The daily dietary allowance was 110~170 g, and 32% of the surveyed farms provided feed of more than 150 g/day, which showed that forage feed was important. The age of at the first egg was 123 days, 122 days, and 120 days, and the peak percent was 91.8%, 94.9%, and 86.5% in open, windowless and free-range houses, respectively. The average egg production rate was 74.0%, 84.6%, and 72.7% in open, windowless, and free-range houses respectively, thus, there was no correlation between feed intake and hen-housed eggs. Distribution of welfare certified eggs was mainly a direct deal with the consumer or through contract production. The ratio of direct transactions between large-scale marts and eco-friendly specialty stores of welfare approved eggs was higher than that of conventional eggs. The rate of contract sales of eggs in both the barn and free-range systems was high, and the percentage of courier sales farms was also high. Excluding courier services, price of eggs in the barn system rose to more than 30 won/egg in the second half of 2017 (after AI). Price of eggs in the free-range system rose to more than 50 won/egg in the second half of 2017 (after AI). In the case of courier sales, the same price of 500 won was maintained before and after AI. In conclusion, the results of this study can be used as basic data for improving the animal welfare certification system for laying hens in Korea.

• Korean Journal of Poultry Science
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• v.51 no.2
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• pp.57-63
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• 2024

As global warming worsens, it is feared that higher ambient temperatures and relative humidity might result in a more intense heat stress for livestock animals, especially broilers, which lack sweat glands for thermoregulation and have been selectively bred for rapid growth. Therefore, strategic livestock management is needed to mitigate the adverse effects of heat stress on broilers. In Korea's poultry farming systems, tunnel-ventilated broiler houses and pad cooling systems are commonly installed to lower indoor temperatures during the summer. However, caution is advised with pad cooling systems as they can increase the humidity inside the houses, potentially causing further harm. This study aimed to evaluate the effectiveness of pad cooling systems in tunnel-ventilated broiler house by assessing the reduction in indoor temperature using the Temperature-Humidity Index (THI), which accounts for the impact of relative humidity. Temperature and humidity data were collected during the summer (Jun to Sep) from eight farms with tunnel-ventilated broiler house located in different regions of Korea. The farms were divided into two groups based on the use of pad cooling systems is used, and temperature and humidity data, along with THI values, were analyzed two weeks before the birds were marketed. Meta-analysis results showed that at the hottest time of the day, 14:00, farms with pad cooling systems had significantly lower indoor temperatures compared to the control group, but observed an increase in indoor temperatures by 16:00 (p<0.05). There is no significant difference in relative humidity (p>0.05). The THI values decreased in the treatment group with cooling pads compared to the control group starting from 15:00, suggesting a diminished effect (p<0.05). This study indicates the potential for developing optimal operational guidelines for cooling pads to reduce heat stress in broilers during the summer season.