This study was carried out to investigate the reproduction efficiency and disease of Holstein heifer grazed on mixed pasture desighed with association of tall fescue and white clover cultivar (3 treatments = TI : Tall fescue Fawn + White clover Regal + Or

Forty-five holstein calves (average liveweight 150kg) were used to investigate the effect of combination of tall fescue and white clover cultivars on liveweight gain and feed efficiency into animal product in pastures. Daily gains per head for 3 years in

This study was carried out with aim to find out a tall fescue cultivar which is palatable and resistant to hot climate, and a white clover cultivar which is less competitive with other grasses. Pastures with 3 treatments (TI: Fawn, tall fescue + Regal, wh

The contents of articles on nutrition in life cycle, health and disease in the Korean daily newspapers were analyzed for the evaluation of the trends in nutrition information in mass media. Among 922 articles pressed from January 1960 to June 1996, articles on nutrition in life cycle were most frequently appeared, which is followed by articles on nutrition in disease, health foods and other related food and nutrition informations. There was a deep contrast in that the proportion of articles on nutrition in life clyle decreased from 58% in the 60's to 33% in the 90's, and those of nutrition in disease, and health foods increased from 23% and 5% in 60's to 34% and 18% in 90's, respectively.

This study was carried out to obtain good livestock production in comparison with 3 different pasture mixture (Control : TI = Potomac orchardgrass + Bastion perennial ryegrass + Fawn tall fescue + Regal white clover, T2 = Potomac orchardgrass + Bastion pe

Hehage production, botanical composition and soil chemical characteristics were investigated Ween new pastures and old pastures during grazing seasons from May 1993 to October 1994, to find out the condition of pastures grazed by horses on Chdu. Dry matte

1998년 7월부터 10월까지 약 4개월간 질병매개모기 및 뇌염다발지역인 전라남도 영암군 덕진면 소재 약 30,000M2의 자연수답을 선정, 이에 서식하는 질병매개모기인 중국얼룩날개모기(Anopheles sinensis)와 작은빨간집모기(Culex tritaeniorhynchus)를 대상으로 포식천적어송사리(Aplocheilus latipes) 및 왜몰개(Aphyocypris chinensis)방사와 미생물제제(Bacillus thuringensis H-14)를 병합처리하여 방제효과를 조사하였다. 포식천적어송사리가 0.6fish/TEXM2/TEX가 존재하는 논에서는 7월부터 8월까지 55.0~57.6%의 자연 방제가 이루어졌으며, 한 표본당 평균 10마리 이상으로 증가될 때 미생물제제(B.t. H-14)를 1Kg/ha의 농도로 처리한 결과, 24시간후 100%의 방제를 보였으며, 10월 11일 본 실험이 끝날 때까지 98%의 방제율을 유지하였다. 천적어가 존재하지 않는 논에서는 수면 1TEXM2/TEX 당 1.5마리의 비율로 포식어(Aphyocypris)를 방사한 결과 9월 21일(방사후 2주)까지 88.2~96.7%의 만족할 만한 방제율을 유지하였다. 천적어가 존재하지 않는 또 다른 논에서 미생물제제(B.t. H-14)를 1Kg/ha의 농도로 단독 처리한 결과, 24시간 후 100%의 방제율을 보였으나, 7일 후에는 개체군밀도의 회복현상을 나타내었으며 B.t.(H-14) 2차 처리후 모기유충의 개체군밀도를 억제할 수 있었다.

Based on the current importing and exporing regulations for disease control of embryo transfer, some important microorganisms and their control possibilities are reviewed. The results reviewed were sumrnarized as follows: 1. Regulations regarding to the import of embryos vary between importing and exporting countries, but exporting countries examine the donor and embryos for the heaith certification by the requirements of importing countries. 2. Organisms that infect the gametes are 5 kinds of viruses and the diseases caused by them could not be controlled or eradicated using embryo transfer. 3. Organisms that do not infect the gametes are 4 kinds of viruses and the causal organisms are potential candidates for control or eradication by embryo transfer. 4. Organisms that penetrate the zona pellucida and infect the embryo are 6 kinds of viruses including bovine viral diarrhea virus. 5. Organisms that cannot penetrate the zona pellucida or do not infect the embryo are 15 kinds of viruses and the removal from their contaminations are recommended by proper washing procedure and antisera treatment. Bovine and porcine parvovirus, porcine pseudorabies virus and vesicular stomatitis virus are included in these organisms. 6. Bovine embryos that artificially exposed to various pathogenic organisms such as bovine herpes virus, IBR virus, bluetongue virus, bovine viral diarrhea virus and Brucella abortus in vitro are discussed about their infection by several treatments.

상선승무원들의 승선근무로 인한 질병 발생 실태를 조사하여 승선근무로 인해 발생되는 질병예방 및 건강증진을 위한 기초 자료를 제공하기 위한 목적으로 1049명의 상선승무원들을 대상으로 설문 및 면접을 통해 조사 분석한 결과는 다음과 같다. 최근 12개월 동안 승선 중 당직근무에 지장을 받을 정도의 질병을 경험한 선원은 69.0%였으며, 질병경험분포에 유의성을 나타낸 변수는 연령(p<0.05), 소득수준(p<0.01), 승선경력(p<0.01), 직급(p<0.01), 건강인식도(p<0.01), 건강염려도(p<0.01), 피로도(p<0.01), 직업만족도(p<0.05), 휴식시간(p<0.05) 등이었으며, 질병경험은 치주질환 7.3%>무좀 6.6%>위궤양 6.4%>외상 5.3% 순이었다. 질병군별 질병발생은 근골격계질환이 17.8%로 가장 많았고 구강계질환 13.6%> 피부계질환 12.4%> 소화계질환 12.1% 순이었으며, 발생 질병의 불편기간은 31일 이상이 35.7%, 입원기간과 치료기간은 각각 7일 이하가 50.2%, 42.8%였고 의료시설 이용은 의원급이 27.9%로 가장 높게 조사되었다.