본 시험은 젖소 4두에 대하여 제1위체류형 센서(Indwelling probe)를 정치시키고 이를 이용하여 아급성제1위과산증 (SARA)의 강도를 조사함과 동시에 pH가 혈 중 내독소 (Lipopolysaccharide; LPS)의 농도에 미치는 효과를 알아보 기 위하여 수행되었다. 비섬유성탄수화물(Non-fiber carbohydrates, NFC)을 기준으로 적정 수준의 NFC를 포함하고 있는 정상 사료군(Normal diet, ND)과, 아급성제1위과산증 (Subacute ruminal acidosis, SARA) 유발가능 사료군(Acidogenic diet, AD)의 2개 처리구에 각 2두씩 배치하여 Cross-over 설계로 사양실험을 반복 실시하였다. 제1위체류형 센서는 장시간에 걸친 제1위 내 pH의 변화를 추적하는 데 효과적 이었다. 얻어진 결과에서 AD 급여는 반추위내용물의 pH를 낮추는 데 커다란 영향을 주었으며, 반추위 내 pH의 저하 는 혈 중 LPS의 농도가 증가로 이어짐을 확인할 수 있었 다. 따라서 혈 중 LPS 농도는 급성 또는 만성형을 불문하 고 과산증을 확인하는 지표로 사용 가능할 것으로 판단된다. 또한 착유우용 사료첨가물로 많이 이용되는 소디움벤 토나이트(NaB)와 프로필렌글리콜(PG)의 급여는 반추위 내 pH의 저하를 완충시켜 궁극적으로 SARA의 강도를 완화시 키고 혈 중 Lipopolysaccharides (LPS) 농도의 증가를 줄여 줌으로써 내독소에 의해 발생하기 쉬운 제엽염 등의 부작 용을 완화시키는 데 도움을 줄 수 있을 것으로 사료된다.

본 시험은 국내에서 생산되어 곤포형태로 포장된 청보리 사일리지, 호밀 사일리지, 이탈리안 라이그라스 사일리지 및 수단그라스 (수수수단그라스 교잡종) 사일리지의 반추위 내 발효특성과 분해율 및 전장소화율과 TDN을 평가하기 위해 반추위 누관이 장착된 소 4두를 대상으로 실시되었다. 사일리지가 반추위액의 pH에 거의 영향하지는 않았으나 사일리지 급여 후 3시간에서 다른 종류의 사일리지를 섭취한 경우와 비교할 때 수단그라스 사일리지를 섭취한 소의 반추위액의

The purpose of this study was to investigate selected nutrient intakes, dietary atherogenesity, energy balance and activity level of college students. One hundred and thirty one students (61 males and 70 females) made their three-day dietary records and one-day activity records along with one-day dietary records. BMI of the surveyed students was 22.33 for males and 20.28 for females. Average calorie intakes of male and female students was respectively 2166.20㎉ and 1793.60㎉. Females had slightly higher fiber intakes than males in terms of fiber g/1000㎉. Carbohyrate, protein and fat ratios in energy composition of males and females were respectively 56.62 : 15.33 : 24.70 and 57.64 : 16.49 : 25.79. Average cholesterol intakes of male and female students were 295.66㎎ and 259㎎ respectively. The male showed higher saturated fat intake, and had higher atherogenic indices of diets such as cholesterol index(CI) and cholesterol-saturated fat index(CSI) than the female. Males spent an average of 1039.00㎉/day compared to females of 687.93㎉/day for all physical activities. Most students participated in light(100% of males and females) and moderate(33% of males and 3% of females) activities level. Few students spent time at severe and very severe activity level. Seventeen of the 131 students were in positive energy balance whereas 83% were in negative balance. Both genders with positive energy balance tended towards smaller weight and BMI, and larger food intakes than those with negative energy balance. Students with positive energy balance had higher saturated fat intakes and dietary atherogenic scores of CI and CSI than the counterparts with negative energy balance. Males with positive energy balance had decreased physical activity and daily energy expenditure whereas increased food and saturated fat intakes. Females with positive energy balance had significantly increased food, saturated fat and sugar intakes.

A series of experiments were carried out for two successive years to investigate the productivity of forage turnip in mid-northern area of Korea. Fresh matter and dry matter yields of 6 foreign cultivars (Purple Top Strap Leaved, Purple Top White Globed,

This study investigated the characteristics of variations in carbon dioxide concentration and air temperature with the vertical change of surface in a grassplot. Field observations were carried out at a grassplot in Gyeongnam Science High School, over four days in August and November, 2015. Continuous observation equipment (GMP343, VAISALA) was installed at the LP (0.1 m from the surface) and UP (1.1 m from the surface) points, and the carbon dioxide concentration and air temperature were measured simultaneously at 1-min intervals. To summarize the results of the observation, August had higher than average concentrations of carbon dioxide, while November showed average air temperatures. Moreover, the concentration of carbon dioxide was higher at the UP point, while the air temperature was higher at the LP point. The correlation coefficient of carbon dioxide concentration between the UP and LP points was 0.80 in August across all the four days, while it was higher in November at 0.58 0.95. The results of the regression analysis of carbon dioxide concentration with air temperature changes for both August and November showed a distinct change at the LP point (R2=0.36 0.76), as compared to the UP point (R2=0.1 0.57). Between the UP and LP points, the carbon dioxide concentration and air temperature regression analysis results indicated that an active exchange was taking place between the two points.

This research study was to develop methods for inhibiting the germination of cotton seeds. Germination rates after heating treatment at 80℃ with 10, 20, 30, 40 min. were 9.3, 9.3, 5.3 and 1.3 percentage, respectively. Heat treatment over 85℃ with 10 min. caused no germination of cotton seeds. Germination was significantly reduced with gamma rays treatment more than 10,000 gy, while the treatment within 2,000-8,000 gy induced less effects. Microwave processing for 30 seconds and 60 seconds inhibit the germination of cotton seed under 8 and 0%, respectively. As a physical treatment, rollmill milling with 1.5, 2, 2.5 mm gap inhibited any germination of cotton seeds. The optimum gap of roll-mill for processing physical cracking was below 51% of the thickness of seed.