• 한국가금학회지
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• 제34권4호
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• pp.253-257
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• 2007

파유미 종 닭에 계두 및 구두 백신을 접종하고 2종의 백신에 대한 방어 능력을 방글라대쉬의 야외의 닭 사육 조건에서 비교하였다. 'Take reaction'의 수율을 평가하여 이것을 더 나은 면역 반응과 관련지어 해석하였으며, 그룹 B와 그룹 C의 닭은 각각 93.33%와 100%의 면역 반응을 보여주었다. 1차 예방접종에 따른 평균 PHA 항체가는 B와 C 그룹에서 각각 $32{\pm}14.81$과 $33{\pm}13.66$으로 나타났다. 보강 접종 후 평균 PHA 항체가는 B 및 C 그룹의 전 처리군에서는 $46.93{\pm}16.52$와 $55.46{\pm}14.64$이었으며, 공격접종 2주 후 시점에서 향체가는 각각 $93.86{\pm}33.04$와 $110.93{\pm}29.29$로 나타났다. PHA 항체가는 백신 접종 후와 접종 후 처치군들에서 백신접종 전 항체가에 비해 현저하게 증가함을 보여주었다. 이렇게 현저한 PHA 항체가의 차이는 사용한 백신의 종류가 다양함으로 인해 발생되는 것이기도 하였으나, 백신 접종을 받은 모든 닭들은 감염에 대한 저항력을 보여주었다.

• Journal of Forest and Environmental Science
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• 제29권1호
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• pp.15-28
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• 2013

Protected area based ecotourism is now the most interesting topic to the nature lover and policy maker throughout the world because of its linkage with economic benefits, protected area management and biodiversity conservation. Based on this premise our study explores the visitors' perception on the recreational potential of Kaptai National park and its potentiality in ecotourism development in Bangladesh. The field survey was carried out both in holidays and non-holidays of the week from the late winter season in 2009 to the spring season in 2010. A total of 118 visitors were interviewed with the help of a semi-structured questionnaire. Study findings revealed that about 62% male constitute the visitors group with the maximum number of visitors in the age of between 15-25 years (35.59%). The tourists were very much attracted by boat riding (93.22%) followed by scenic beauty of Rampahar-Sitapahar (85.59%). A major portion of about 57.14% tourists wished to visit the park within a year because they got a lot of pleasure from Natural and green environment (86.44%) followed by boating on Kaptai Lake (85.59%). Most of the visitors (36%) were happy about existing facilities but defined some problems such as tour guiding facility, food and drinking water supply, etc. About 71% and 66% respondents perceived that Kaptai National Park made them to be concerned and protective of nature and supports and sustains local ecosystem respectively and 43% respondents agreed that Kaptai National Park ensures the social equity and involve local people in ecotourism which are the most important elements of sustainable ecotourism. The present study results also predict that the park might be a good recreational area for enjoying with family members and group of friends through proper management and promoting the relationships among tourism, local people and biodiversity conservation.

• 한국동물위생학회지
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• 제30권4호
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• pp.497-503
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• 2007

The humoral immune response of chicken vaccinated with fowl and pigeon pox virus vaccines was determined with the protective potentiality of the two vaccines in field condition of Bangladesh. Different aged Fayoumi chicks were subjected for the study. To assess the relationship with better immune response among experimental groups, the average percentage of 'take reaction' was examined and recorded to 97.77% in group A, 93.33% in group B and 100.0% in group C. The level of immune status induced by different vaccinated group was measured by passive hemagglutination (PHA) microplate test method. The mean PHA titer levels after primary vaccination were $33.06{\pm}14.13$ in group A, $32.0{\pm}14.81$ in group B, and $33.0{\pm}13.66$ in group C. Following booster vaccination, the mean PHA titer levels in prior of challenge were increased to $55.46{\pm}14.64$ in groups A and C, and $46.93{\pm}16.52$ in group B. The recorded PHA titer levels of each group at two weeks after challenge were significantly increased to $106.66{\pm}31.22$, $93.86{\pm}33.04$ and $110.93{\pm}29.29$, respectively. The PHA titer levels after vaccination and challenge were significantly increased compared to pre-vaccination titer levels (P<0.01). Although the PHA titer levels among three groups administrated different vaccine combinations in prior of challenge were significantly varied (P<0.01), it was observed that all of the vaccinated chicks were highly protected against challenge infection.

• Applied Biological Chemistry
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• 제46권4호
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• pp.333-337
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• 2003

맥엽과 이를 이용한 항산화 조성물을 제조하여 이에 존재하는 nitrite scavenging효과와 이에 따른 발암원으로 부터의 보호 효과를 조사한 결과는 다음과 같다. 맥엽과 항산화 조성물 모두 수층에 비하여 메탄올층에서 아질산염 소거능이 2배 이상 높게 나타나 M-BL50의 0.01 mg/ml 농도에서 약 64.3%, M-AM 0.01 mg/ml 처리군이 이보다 약간 높은 68.3% 정도로 나타내었다. 마우스 단핵구 기원인RAW 264.7(macrophage, mouse)에 맥엽과 항산화 조성물의 수층과 메탄올층을 처리하고 세포 생존율을 측정한 결과 수층 처리군에 비해 메탄올층 처리군에서 모두 세포 생존율이 더 낮게 측정되었으며 모든 시료에서 농도의존적으로 세포 증식이 억제되었다. 특히, M-AM을 처리한 군의 경우 모든 농도에서 가장 낮은 세포 생존율을 나타내어 항산화물 첨가에 의해 세포 증식 억제 효과가 상승됨을 알 수 있었으며 $IC_{50}$ 수치 또한 메탄올층과 A-AM시료 처리군에서 현저히 낮은 수치를 나타내었다. 또한 세포 내 아질산염 소거능을 측정한 결과 역시 마찬가지로 맥엽 입자 크기에 따른 차이는 나타나지 않았으며 수층 처리군에 비해 메탄올층 처리군과 항산화물을 첨가한 군에서 모두 높은 소거능을 나타내어 맥엽 및 기타 항산화물을 섭취함으로써 체내에서의 니트로사민 생성을 억제시킬 수 있을 것으로 예상된다.