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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.
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$gt;.05) were found between Cr and Cr₂O₃ method, of which the MEn were 3, 256 and 3, 276 ㎉ per ㎏ respectively. 3. In conclusion, there were appeared non significant differences among ages and between analytical methods in measuring the MEn of corn and wheat. Therefore, the Cr analytical method that is easier handling in analysis than that of the Cr₂O₃ for measuring ME in chicken might be recommended.
박용윤,장윤환,양문열,김강식 ( Y . Y . Park,Y . H . Chiang,M . I . Yang,K . S . Kim ) 한국축산학회 1973 한국축산학회지 Vol.15 No.3
These feeding experiments for poultry with fossil meal were carried out to determine the value of a trace mineral supplement. A commercial trace mineral as a control and 0, 1.5, 3.0 and 4.5% fossil meals were used for broiler studies. The body weight gain, feed conversion and economics of these feedings were compared. For layer study, consumption and conversion of feed, production and quality of egg and shell thickness were examined in 1 to 4% fossil levels. The results obtained are summarized as follows: 1. In broiler experiment, the body weight gain in 1.5% fossil feeding was the highest and the control followed it, but no significant difference was shown between them. Low body weight gains were shown in the others. 2. The feed conversion and economics for these feedings presented same trend as that of body weight gain. The best results were obtained in 1.5% fossil feeding. 3. In layer study, the plots of fossil supplements consumed more feed than the control. The body weight with layering with fossil feeding was decreased less than the control. However, 4% feeding was exceptional. 4. The egg production of 1% plot was higher than the control, but there was no significant difference between them. However, production results obtained from the both feedings were significantly higher than the rest of higher fossil feeding groups. 5. The egg shell of 1% fossil feeding was shown slightly thicker than those of others. 6. The egg quality (Haugh Unit) was best shown (p$lt;0.01) compared to that of control.
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.
부로일러 사료에 대한 항생물질제조 부산물 ( Ugifac ) 의 사료적가치에 관한 연구
강태홍,박용윤,최진호,정인걸 ( T . H . Kang,Y . Y . Park,J . H . Choi,I . K . Chung ) 한국축산학회 1980 한국축산학회지 Vol.22 No.4
This experiment was carried nut to investigate the nutritive value of antibiotic fermentation by-product (Ugifac) for broiler diets, 270 birds of Hybro male chicks were divided into 6 groups, which were the substitution level by Ugifac 0, 1, 2, 3, 4, 5% for 8 weeks. The results obtained were as follows; 1. Ugifac contains 68.60% C. Ash, 17.32% C. Protein, and 0.67㎎/g of kanamycin. 2. By increasing the levels of Ugifac, it was tended to increase body weight gain and the amounts of feed consumption. 4% levels of Ugifac was better than any other treatments in terms of feed efficiency and economics. 3. There was no evidence of antibiotics retention on muscle and liver of chicks although Ugifac was supplemented till 5%. In conclusion Ugifac can be used within the 4%. levels for broiler diets efficiently without antibiotics retention problems, although the chemical composition of Ugifac was relatively low in quality.
육성 비육돈에 대한 동 에너지 수준에 계절별 우지 첨가 효과
정일병,박용윤,한인규 ( I . B . Chung,Y . Y . Park,I . K . Han ) 한국축산학회 1985 한국축산학회지 Vol.27 No.6
A trial with one-hundred-forty-four crossbred pigs were conducted to study effects of dietary tallow supplementation (0, 2, 4, 6, 8 and 10% tallow) with constant energy level (3,400 ㎉ P.E. per ㎏ feed) during summer and winter on the performance and carcass characteristics of growing-finishing swine. Seasons had no significant influence on average daily gain, feed intake, feed per ㎏ gain and carcass traits. In winter, daily gain, feed intake and feed per ㎏ gain were reduced with increasing level of tallow addition, whereas dressing percentage and backfat thickness were increased with increasing levels of tallow supplementation. In summer, daily gain, feed intake and feed per ㎏ gain responded quadratically as levels of tallow addition increased, yet dressing percentage and backfat thickness were increased as levels of tallow supplementation. It was estimated that the optimum level of tallow in a diet with 3,400 ㎉ D.E. per ㎏ feed for growing-finishing swine in summer season was 4%.