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房極勝,金榮吉 東亞大學校 石堂學術硏究奬勵會 1977 石堂論叢 Vol.2 No.-
This experiment was conducted in effort to determine safety and proper amount of Urea, Coating urea and Diuredo-isobuane (DUIB) in Korean Native Goats. The results obtained were as follows: 1. Ruminal pH values were considerably higher (7.0-8.0) on area and coating area treated goats. But constant ruminal pH values were recorded on DUIB treated goats. 2. Ruminal ammonium nitrogen concentration were below toxic levels when treated with coating urea (0.77 gm/kg B.W.) and DUIB (1.28 gm/kg B.W.). Although urea (0.3 gm/kg B.W.) were slightly above toxic levels. 3. Blood ammonium nitrogen concentration were below toxic levels when treated with urea (0.3 gm/kg B.W.) coating urea (0.77 gm/kg B.W.) and DUIB (1.28 gm/kg B.W.) 4. Korean Native Goats used were intoxicated by 0.9 gm urea per kg B.W. and 2.33 gm coating urea per kg B.W. between 40 minutes and 80 minutes after administration. 5. Initial rise in ruminal pH and blood ammonium nitrogen concentration was a tendency for a decline after 4 weeks feeding urea (0.3 gm/kg B.W.) and coating urea (0.77 gm/kg B.W.) (p<0.05). The present data reveal that DUIB is most efficient NPN resource in Korean Native Goats.
방극승 한국축산학회 1997 한국축산학회지 Vol.39 No.2
One hundred eight Korean Native cattle, Hanwoo, were measured for subcutaneous fat thickness, longissimus muscle area and marbling score at 13 rib using real-time linear array ultrasound one night before slaughter. Ultrasonically measured predictions were compare to corresponding carcass measurements to determine accuracy of live evaluation. Correlations with carcass measurements were 0.67 for backfat depth, 0.84 for longissimus muscle area and 0.88 for marbling socre. However, scanned mean backfat depth was significantly(P$lt;0.05) thicker by 2.8 ㎜ than carcass measurement indicating that certain amount of backfat was removed arbitrary or accidently during skinning process. Ultrasonic measured longissimus muscle area was slightly less than carcass measurement without significance, the average absolute difference between these two measures was 3.2 ㎠. About 67 percent of ultrasonic evaluated marbling score was coincide with carcass evaluation, however 33 percent of live evaluation was incorrect and warrant further investigation.
房極勝 東亞大學校 1974 東亞論叢 Vol.11 No.2
섬바디의 一般成分과 Ca 및 P의 時期的 變化를 알기 爲하여 武施肥 狀態로 生育한 一年된 섬바디로 1974年 7月부터 11月까지 實施한 調査에서 얻은 結果는 다음과 같다. 1. 섬바디의 조단백질 함량은 試驗 開始月인 7月에 生草 4.26%, 乾草 15.60%로 제일 높았고 生育時期가 進行함에 따라 11月에 生草 2.30%, 乾草 8.89% 까지 감소 하였다. 2. 조섬유는 조단백질과 正反對로 生育時期가 進行함에 따라 增加되고 11月에 生草 4.38% 乾草 14.78%까지 증가하였다. 3. Ca含量은 生育時期가 進行됨에 따라 增加하였으며 平均 生草 0.54%, 乾草 1.6%로 다른 野草類보다 현저히 높았으며 P는 生育時期가 進行됨에 따라 감소하였으며 平均 生草 0.04%, 乾草 0.18%로서 다른 野草類보다 낮았다. 4. 以上의 結果로서 섬바디는 年中 단백질含量이 높고 纖維量이 적으며 Ca含量이 높은 飼料的價値가 豊富한 것을 알수 있었다. To evaluate the nutritive value of native herbage Dystaenia takeminia. the seasonal changes in the chemical composition including the content of calcium and phosphorous were investigated from July to November, 1974. The results obtained are summarized as follows: 1. Crude protein content was high at July (Raw-4, 76%, Hay-15.06%) and slightly decreased as the growing stage progressed. 2. Crude fiber content was low at July (Raw-2.43%, Hay-9.82%) and slightly increased as the growing stage progressed. 3. Calcium content increased as the growing stage progressed but phosphorous content decreased as the growing stage progressed. The yearly average of calcium content in hay was 1.7% and that of phosphorous was 0.16%.
宿主의 性Hormone이 소진드기 Boophilus microplus의 산란에 미치는 영향에 대한 실험적 연구
房極勝 東亞大學校 1975 東亞論叢 Vol.12 No.2
性 Hormone齊를 소진드기 Boophilus microplus에 주사 하여 본 결과 다음과 같다. 1. Estrogen은 産卵前 휴식기간을 연장하고 산란을 억제 하는 效果가 있었다. 2. Progestron은 産卵活動에 뚜렷한 영향을 주지 않았다. 3. Testosterone 은 진드기의 初期 産卵을 촉진하는 效果가 있었다. 4. 性 Hormone이 産卵 지속기간, 産卵한 卵數에는 영향을 주지 않는 것으로 나타났다. This study was conducted to study the effect of host sexual hormone on egg laying of cattle tick. Boophilus microplus. The results were as follows: 1. Female sex hormone, Estradiol, markedly inhibited egg laying and resting period for egg laying. 2. Female sex hormone, Progestrone, showed no significant effect on egg laying activity. 3. Male sex hormone, Testosterone, acclerated egg laying especially in the early stage of egg laying period. 4. Above three sexual hormone showed no significant effect on the number of egg laid and duration of egg laying period.