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RISS 인기검색어
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- 저자 : 정천용 ( Moon I . Yoo (검색결과 4 건)
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가축분의 사료화를 위한 연구 5 . 산란계에 대한 건조계분 및 돈분의 사료가치 시험
유문일,정천용,한인규 ( Moon l . Yoo,Chon Y . Chung,In K . Han ) 한국축산학회 1977 한국축산학회지 Vol.19 No.5
This experiment was conducted to study the nutritive values of dried hen manure and pig manure in laying hen rations. Wheat bran and corn were partially replaced by the .dried animal wastes mentioned above in the rations of laying hens of Shaver strain and 336 hens were received the experimental diets for 12 weeks. The results obtained are summarized as follows: 1. Feeding dried poultry waste and pig manure upto 15% had no effect on the egg production rate, average daily feed intake and feed efficiency. 2. Inclusion of dried hen manure and pig manure at the level of 10 percent did not influence egg weight. However, inclusion of 15 percent of animal wastes slightly reduced egg weight. 3. There were no significant differences between treatments in the shell thickness and Haugh units. The color of egg yolk was significantly(P$lt;0.05) affected only by the inclusion of 15 percent pig manure in the lay ing rations. 4. Utilizability of dry matter of hens fed 15% pig manure was slightly lower than other groups. Data revealed that utilizability of crude fat was highly improved when animal fat (tallow) was included. Based upon the above results, it may be concluded that the inclusion of dried hen manure and pig manure upto 15% in the rations of layer would have no adverse, effects on the laying performance and the egg qualities.
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가축분의 사료화를 위한 연구 8 . 한우에 대한 건조계분의 사료가치시험
육종융,유문일,정천용,한인규 ( Chong Y . Yuk,Moon I . Yoo,Chun Y . Chung,In K . Han ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5
This experiment was conducted to determine the substitution level of dried hens manure (DPM) for wheat bran in fattening ration for Korean native steer. Twenty yearling steers, weighing on average of 245 ㎏ were randomly alloted to four treatment groups according to the level of DHM. Treatments consisted of four rations constraining 0, 10, and 20% DHM substituted for wheat bran and 30% DHM substitute for wheat bran (20%), corn (6%) and soybean oil meal (4%). The results obtained are summarized as follows : 1. Average daily gains of DHM 0, 10, 20 and 30% fed groups were 0.95, 0.90, 0.89 and 0.88 ㎏, respectively. There was no significant difference among treatments. Data revealed that the average daily gain decreased slightly as the level of DHM substituted increased. Dressing percentage was not affected by the different level of DHM feeding. 2. Dry matter intakes of DHM 1, 10, 20 and 30% groups were 7.15, 7.21, 7.41, and 7.63, respectively. Daily dry matter intake increased as the substituted level of DHM in ration increased. 3. When DHM cost was considered, to be zero won per ㎏ feed cost required per ㎏ of body weight gain was decreased as the level of DHM in ration increase. When DHM cost was estimated to be 30 won per ㎏, feed cost required per ㎏ of weight gain was similar for DHM 0 and 30%, and slightly higher for DHM 10 and 20% groups than for DHM 0 and 30% groups Based upon the dats concerning body weight gain and economic analysis, it is concluded that inclusion of DHM may be practiced upto 30% in fattening ration for Korean native steer and the price of DHM per ㎏ should be less than 30 won in any case.
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가축분의 사료화를 위한 연구 2 . 육성돈사료에 있어서 건조계분과 조사료 분말 혼합사료에 의한 강부류 대치시험
유문일,한인규,정천용 ( Moon I . Yoo,In K . Han,Cheon Y . Chung ) 한국축산학회 1975 한국축산학회지 Vol.17 No.5
In order to evaluate the feeding value of mixture of DPW and roughage for growing-fattening pigs a feeding experiment was conducted employing 30 barrows of Landrace x Yorkshire crossbred weighing an average of 22.8㎏. Experimental pigs were distributed to 5 experimental treatments replacing wheat bran at the level of 0, 10, 20, 30, 40% by mixture of DPW and roughage meal (orchard grass hay). Results obtained are summarized as follows; 1. Daily gains of the treatments that used 0, 10, 20, 30 and 40% of mixture of DPW and roughage meal were 629, 633, 596, 522, and 489 gm, respectively. Daily gains were depressed by increasing the level of mixed meal used. There was significant difference at 5% levels between the treatments fed 0, 10, and 20% mixed meal and the treatments fed 40 and 50% mixed meal. 2. Daily feed intake fed 0, 10, 20, 30, and 40% of mixed meal were 2,409, 2,552, 2,554, 2,525, and 2,604 gm, respectively and the differences were significant at 5% level. 3. The pigs fed 0, 10, 20, 30, and 40% mixed meal required 3.83, 4.03, 4.28, 4.84, and 5.20㎏ of feed per kilogram of gain, respectively. It was found that the feed efficiency was depressed as the level of mixed meal increased in the rations. 4. Carcass evaluation showed no definite difference among the treatments. Based on the above results, it may be concluded that substitution of mixture of DPW and roughage meal for wheat bran could be recommendable up to 10% in the feed of growing-fattening pigs.
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가축분의 사료화를 위한 연구 9 . 수집계절 , 수집방법 및 건조방법이 계분의 영양소함량에 미치는 영향
이택원,육종융,한인규,정정수,유문일,정천용 ( Tack W . Lee,Chong Y . Yuk,In K . Han,Chung S . Chung,Moon I . Yoo,Chun Y . Chung ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5
This experiment was conducted to investigate the changes in chemical composition of dehydrated poultry waste (DPW) as affected by season (spring, summer, autumn, winter), collection intervals (12, 24, 36, 48 hours) and drying process (oven dry, oven dry often solar exposure for I-day, oven dry after solar exposure for 2-day, oven dry after solar exposure for 3-day, oven dry after solar exposure for 4-day). The waste was collected from laying hens of White Leghorn strain at Livestock Experiment Station and College of Agriculture, Seoul National University. Fresh hens excreta was dried in drying even at 80℃ for 24 hours after various preliminary treatment as originally designed. The results obtained are summarized as follows: 1. Crude protein content of dries poultry waste collected in winter (38.40%) way much higher than that of spring (28.63%), autumn (24.91%) and summer (22.20%). However, no definite; trend by season was found in the contents of crude fat, crude fiber, crude ash and nitrogen free extract (NFE). 2. Although the collection intervals had no effect on the contents of crude fat. crude fiber, crude ash and NFE, the crude protein content of DPW collected at 12 hours interval (30.15%) showed the higher than the at 24 hours (29.62%), 36 hours (27.70%), or 48 hours (27.20%). 3. It was found that the crude protein content of DPW dried in drying oven at 80℃ was analyzed to be 34.45% and that of DPW dried in oven after solar exposure for 1 day, 2 days, 3 days and 4 days was found to be 30.19%, 28.32%, 27.75% respectively. Drying process had no effect on the other chemical components of DPW studies. 4. Present data indicated that the content of crude protein in DPW could best be retained when fresh poultry waste was dried in oven at 80℃ regardless of collection intervals. It was also apparent that nitrogen loss was proportional to the length of collection intervals, even if same method of drying process was used. It appeared that the content of crude protein and fat was more easily affected by season, collection interval and dying method than the other chemical components.
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