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박용윤,강태홍,최진호 ( Y . Y . Park,T . H . Kang,J . H . Choi ) 한국축산학회 1981 한국축산학회지 Vol.23 No.4
This experiment was conducted to study the effect of all mash and pelleted diet on the growth rate, feed consumption, feed efficiency and economic return of broiler chickens. The number of birds were 168 (male 84, female 84). The results obtained were as follows ; 1. The chicken fed pelleted diet were grown 10% more than all mash fed group (P$lt;0.01). 2. Amount of feed consumed was higher for chickens fed pelleted diet than for chickens fed all mash, but no differences in feed efficiency were found between the birds fed all mash and pelleted diet. 3. In the case of male, growth rate, diet intake and feed efficiency were higher than female chickens, but no difference were found between the birds fed all mash and pelleted diet. 4. In economical analysis, pelleted ration was higher 11% more than all mash fed group.
朴龍潤 광주보건대학 1987 論文集 Vol.12 No.-
The purpose of this study was to evaluate of shear bond strength in two kinds of porcelain fused to non-precious alloy. The Instron testing machine, operating at a cross-head speed of 0.5㎜/min, was used to break the bond between the porcelain and the Vera-bond metal. The shear bond strength was computed from the load required to break the bond divided by the porcelain-surface bond area. The result were as follows : 1. Shear bond strength was obtained through Uni-bond porcelain was fused to Vera-bond metal, showed 12941 psi in push test and 9.099 psi in pull test, respectively. 2. Shear bond strength was obtained through Bio-bond porcelain was fused to Vera-bond metal, showed 13.057 psi in push test and 9469 psi in pull test, respectively.
박용윤,강태홍 ( Y . Y . Park,T . H . Kang ) 한국축산학회 1980 한국축산학회지 Vol.22 No.4
The nitrogen corrected metabolizable energy (MEn) of corn and wheat in chicken were compared among ages of chicken (15, 30 and 45 days after hatching), and between analytical methods of Chromium and Chromic oxide as a indicator method by using 210 birds of meat type chicken. Both tested feed were substituted 30% with feed basis in a commercial chicken ration. The results obtained were as follows : 1. In the 15, 30 and 45 day-old chickens after hatching the MEn of corn were 3,350, 3,398 and 3,372 ㎉ per ㎏ of corn respectively. In comparison of analytical methods between Cr and Cr₂O₃ the MEn of corn were 3,306 and 3,340 ㎉ per ㎏ respectively. Non significant differences (P$gt;.05) were found among chicken ages and between analytical methods. 2. The MEn of wheat were 3,246, 3,269 and 3,283 ㎉ per ㎏, for chicken age of 15, 30 and 45 days after hatching respectively. The MEn of wheat appeared non significant difference (P$gt;.05) among chicken ages. Also, non significant differences (P$gt;.05) were found between Cr and Cr₂O₃ method, of which the MEn were 3, 256 and 3, 276 ㎉ per ㎏ respectively. 3. In conclusion, there were appeared non significant differences among ages and between analytical methods in measuring the MEn of corn and wheat. Therefore, the Cr analytical method that is easier handling in analysis than that of the Cr₂O₃ for measuring ME in chicken might be recommended.
박용윤,Park, Yong-Yun 대한양돈협회 1990 養豚 Vol.12 No.2
신생자돈의 사망은 모돈에서 이행된 항체가, 사양관리조건, 돈사의 청결상태, 질병 등에 기인된다. 신생자돈의 폐사원인에 있어서 자돈의 생시체중이 1Kg이하로 미달되는 경우는 기아를 유발하여 사망율이 높아지고, 체중이 너무 큰 것은 체온유지를 위하여 소비되는 에너지의 양이 많기 때문에 사망하게 된다.