• KOREAN POULTRY JOURNAL
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• v.7 no.11 s.73
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• pp.119-120
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• 1975

최근 국내의 산란계 사육방식은 일부 특수한 종계를 제외하고는 거의 케이지로 사육하고 있음은 주지의 사실이다. 그동안 많은 연구가 계속되어 진전이 있었음에도 불구하고 아직도 산란계 한 마리당 필요로하는 케이지의 면적이라든지 케이지 한칸에 몇 마리를 넣어야 적당한지의 여부등 많은 과제가 뚜렷한 정설이 정립되어 있지 않은 실정이다. 최근 북구라파의 스웨덴에서도 계사시설이 케이지로 급격히 바뀌어 지고 있어 케이지에 관한 여러 가지 사양시험의 결과가 계속 발표되고 있는 바 다음은 Poultry international 1975. 10월호에 발표된 것을 간단히 옮겨 보고자 한다.

• Korean Journal of Poultry Science
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• v.47 no.3
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• pp.189-197
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• 2020

This study was conducted to compare the production performance and stress response of chickens kept in the conventional cages and floor pens. 491 female White Leghorns were used in this study, and their production characteristics and stress response indicators were analyzed from 34 to 43 weeks of age. The results showed that there was no significant difference in survival rate, hen-day egg production, and body weight between the chickens kept in the conventional cages and those kept in the floor pens. The chickens kept in the conventional cages had a significantly higher egg weight and egg quality compared with those kept in the floor pens (P<0.01). The amount of telomeric DNA in lymphocytes was significantly higher in the chickens kept in floor pens than in those kept in conventional cages (P<0.05). The heterophil-lymphocyte ratio, HSP-90β gene expression level, and DNA damage rate significantly increased in chickens kept in the conventional cages, as compared to the chickens kept in floor pens (P<0.01). In conclusion, there seems to be no difference in the production performance between chickens kept in conventional cages and those kept in floor pens. Furthermore, chickens kept in conventional cages had higher stress response values than those kept in floor pens for all stress response indicators. Therefore, conventional cage types are considered to be a more stressful environment for chickens than floor pens, regardless of the production performance of the chickens.

• Monthly Duck's Village
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• s.12
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• pp.3-6
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• 1999

• Korean Journal of Poultry Science
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• v.38 no.4
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• pp.305-313
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• 2011

This study was conducted to investigate the effects of housing systems on the productivity and physiological response as stress indicators in White Leghorn chickens. The chickens subjected to the conventional cages had a significantly lower viability, hen-housed egg production, egg weight and body weight compared with those to the floor pens. However, the hens housed in the conventional cages had a shorter day of the first egg and a greater egg quality compared with those housed in the floor pens. In addition, this study was also investigated to identify biological markers for assessing the physiological response of chickens under stress conditions. As biological markers, the amount of telomeric DNA was analyzed by quantitative fluorescent in situ hybridization on the nuclei of cells. The DNA damage rate of lymphocytes was also quantified by the comet assay. The amount of telomeric DNA of the lymphocytes, kidney and spleen was significantly higher in the chickens under floor pens than those under conventional cages. The DNA damage also increased in chickens raised under conventional cages, as compared to the chickens under floor pens. As results, we conclude that the chickens housed in conventional cages have a greater stressful status than those housed in floor pens.

• KOREAN POULTRY JOURNAL
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• v.34 no.11 s.397
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• pp.101-106
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• 2002

1980년대 산란 농가의 케이지는 대부분 A형이 주를 이루었으며, 1990년대에는 정부의 시설자금 지원이 본격화되면서 자동화$\cdot$대형화의 조류를 타고 외국산 직립식 케이지가 국내에 보급되기 시작하였다. 초기 직립식 케이지 설치로 평당 사육수수 증가가 가능했지만 자동화에 대한 지식 부족으로 질병과 생산성이 떨어지는 역효과도 있었다. 10년 이상 직립식 케이지에 적응하다 보니 노하우가 축적되어 대형 농장 위주로 직립식 케이지 설치가 증가하였고, 관리면에서도 안정을 보여주고 있다. 그러나 IMF이후 외국산 케이지를 설치하는 농가도 줄어들었고, 설상가상으로 정부의 시설자금 지원도 중단된 상태여서 외국산 케이지 보급이 소강상태를 보이다 최근에 와서 다시 설치가 증가하고 있다. 이와 관련하여 국내에 보급된 케이지 관리실태와 A/S현황을 알아보았다.

• KOREAN POULTRY JOURNAL
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• s.6
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• pp.37-38
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• 1970

케이지 사육에서 영양의 바란스를 어떻게 맞추어 줄 것인가는 오늘날 양계업계에서 커다란 관심사가 되고 있다.

• KOREAN POULTRY JOURNAL
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• v.43 no.5
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• pp.144-147
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• 2011

독일에서는 2010년부터 산란계의 케이지 사육이 금지되었다. 국제계란위원회(IEC)의 기관지 "IEC저널"과 일본의 계명신문에서는 독일 붸히타대학교수인 한스 윌헴 빈도폴스토 박사의 "독일의 케이지 금지와 그 후"를 게재했다. 본고에서는 주요 내용을 정리해 소개하고자 한다.

• KOREAN POULTRY JOURNAL
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• v.26 no.4 s.294
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• pp.170-171
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• 1994

• KOREAN POULTRY JOURNAL
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• v.5 no.9 s.47
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• pp.79-82
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• 1973

• Korean Journal of Poultry Science
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• v.47 no.2
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• pp.83-93
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• 2020

The purpose of this study was to evaluate the effects of stocking density on feather condition, egg quality, blood parameters, and corticosterone levels of laying hens reared in conventional cages. A total of 500, 28 weeks-old Hy-Line Brown laying hens were evenly assigned to two stocking densities (750 and 500 ㎠/bird). There were 50 replicates of each treatment, each consisting of 750 ㎠/birds (n=6) or 500 ㎠/bird (n=4) birds in a cage, respectively. We observed an increase in the laying period of, the group that was assigned 500 ㎠/bird, however, this group experienced significant feather damage when compared with the group allotted 750 ㎠ bird. There was no effect of stocking densities on egg quality. These results suggest that the 500 ㎠/bird stocking density in the conventional cage can negatively affect feather condition and cause the birds to experience more stress than the group allotted 750 ㎠/bird.