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가축분의 사료화를 위한 연구 3 . 부로일러에 대한 건조계분 , 돈분 , 우분의 사료가치 비교시험
한인규,유문일 ( In K . Han,Moon Il Yoo ) 한국축산학회 1976 한국축산학회지 Vol.18 No.1
This experiment was conducted to study the nutritive values of dried poultry(heu) waste, pig manure and cattle manure in the broiler rations. Wheat bran(10%), rapeseed meal(5%) or corn(5%) were partially replaced. by the dried animal wastes mentioned above in the rations of broile chicks of Shaver strain and 288 chicks were received the experimental diets for 8 weeks. The results obtained are summarized as follows 1. Analytical data revealed that the content of nutrients including minerals and vitamins in dried poultry waste was higher than that in either dried pig manure or cattle manure. Amino acid composition of dried poultry waste and pig manure was supperior to that of dried cattle manure. 2. Although there was no statistical difference in the weight gain among treatments, weight gain achieved by the group fed diets of 5% substitution of animal wastes for corn was slightly better than others. 3. The amount of feed consumed by the group of 5% replacement of dried poulry waste for rapeseed meal was significantly lesser than the other treatments. Feed conversion rate was not affected by replacing dried animal wastes for limited amount(5∼10%) of wheat bran, rapeseed meal or turn. 4. When the price of dried animal waste was estimated to be the same as wheat bran, feed cost required per kilogram of liveweight gain was slightly higher for animal waste fed group than control group. However, that was slightly lower for 5% rapeseed meal substitution group or corn than control. 5. Utilizability of dry matter and crude protein of control diet and 10% wheat bran replaced by poultry waste diet was slightly lower than other diet. In general, feeding dried animal waste had little effect on nutrient utilizability. Based on the above results it would be concluded that 10% wheat bran and/or 5% corn in the broiler rations could be replaced by dried animal waste with no adverse effect on the growth rate and nutrient utilizability.
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육성돈에 대한 Mecadox 의 단백질절약 및 성장촉진효과
한인규,유문일,권관 ( In K . Han,Moon I . Yoo,K . Kwon ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6
In order to study the protein sparing and growth promoting effect of mecadox for growing pigs, a total of 160 three way crossbred pigs (Landrace x Duroc x Large White) weighing approximately 11 ㎏ initially were used for a period of 12 weeks of feeding trial and metabolism trial. Experimental diets of two different level of dietary protein (high-19% or low-17% for weaned pig and high -17% or low-15% for growers) were fed with (50 ppm) or without (0 ppm) mecadox (carbodox : methyl- 3 - (2 -quinoxalinylmethylene carbazate-N¹, N⁴-dioxide)). (1) Although there was no statistically difference, pigs fed diets with 50 ppm of mecadox gained faster and more efficient than pigs fed unsupplemented diets regardless of protein level in the diet. Pigs fed the high protein level supplemented with mecadox resulted in best effects of gain and feed efficiency. (2) Rate of gain and feed efficiency of pigs fed the high dietary protein level of 19 % in weaning diet. and 17% in grower ration unsupplemented with mecadox were similar to pigs fed the low dietary protein level of 17% in weaning ration and 15% in grower ration supplemented with mecadox. The growth promoting effect of mecadox was remarkable for younger pigs than growers. (3) Digestibility of crude protein and crude fat was slightly improved and that of crude fiber was decreased when mecadox was added to growing diets. It was apparent that nitrogen retention rate of pigs receiving mecadox was slightly higher than unsupplemenred pigs. Based on the above results, it may be concluded that the addition of mecadox at 50 ppm level could improve the growth rate and feed efficiency from weanling pig to growing pig and that mecadox might have protein sparing effect up to 2% of total dietary protein for growing pigs.
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피혁분의 사료화에 관한 연구 3 . 육성비육돈에 대한 피혁분의 적정급여수준 결정을 위한 연구
한인규,유문일,권관,박홍석 ( In K . Han,Moon I . Yoo,K . Kwan,Hon S . Park ) 한국축산학회 1980 한국축산학회지 Vol.22 No.4
A total of 200 three-way crossbreds (Landrace × Duroc × Large White) were employed to investigate the feeding effect of different level (0%, 1%, 2%., 3%) of hydrolyzed leather meal (HLM) and 2% of fortified leather meal (FLM: as shown in Table 3) to growing-finishing swine for a period of 15 weeks. The results obtained are summarized as follows. 1. Nutrients content of HLM was varied by different sources (makers) of HLM. It was found that the HLM used in feeding experiment contained 75. 21% crude protein, 2.72% chromium and 57.86% pepsin digestibility. Analytical data revealed that HLM contained fairly large amount of glycine, proline, alanine, arginine and contained small amount of other essential amino acids such as methionine and lysine. 2. Experimental results on weight Rain and feed efficiency indicated that optimum using level of HLM in swine rations was 1 %, and 2 % in case of FLM. 3. Digestibility and digestible nutrients content of experimental rations were not affected by the levels of HLM used 4. Carcass data showed that thinner backfat and larger loin eye muscle area were obtained by supplement of 1 % HLM. 5. Chromium retention in kidney was the highest among the tissues, and was higher as the level of HLM in swine ration increased. Accumulation of chromium in bone was the lowest. But it seemed that chromium content of tissues and organs except kidney had little connection with feeding levels of HLM. The results from this experiment indicate that HLM can be used as a protein source in properly balanced swine ration at level of 1 %, and 2% in case of FLM.
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이유자돈 및 육성비육돈사료에 있어서 L - lysine 의 첨가에 의한 단백질 절약효과
한인규,권관,나기현,유문일 ( In K . Han,K . Kwon,Ki H . Ra,Moon I . Yoo ) 한국축산학회 1978 한국축산학회지 Vol.20 No.6
In order to study the protein sparing effect of l-lysine from weanling pig to market weight, a series of feeding and metabolism trials was conducted. In experiment 1, a total of 192 three way crossbred pigs (Landrace x Large White x Duroc) weighing app. 10 ㎏ initially were used for four weeks to determine the effect of supplemental lysine when added to a low protein diets. In experiment 2, a total of 120 three way crossbred pigs were used for 11 weeks from 28 ㎏ to 90 ㎏. The results obtained are as follows: (1) It was found that the dietary protein level of 18% fed during period of 10 to 23㎏ was adequate for the daily gain and feed efficiency. Pigs fed the dietary protein level of 20% were not different in rate of gain and teed efficiency with pigs fed the dietary protein level of 18%. When pig were fed the dietary protein level of 16% + 0.2% l-lysine, rate of gain was similar to pigs fed the dietary protein level of 18%, but feed efficiency was slightly improved, In economic analysis, feed cost required per ㎏. of body weight gain was less for pigs fed the dietary protein level of 16% + 0.2% l-lysine than other levels. Therefore, it was apparent that weanling pig diets supplemented with 0.2% l-lysine was able to spare 2% of dietary protein. (2) The dietary protein level of 16% was adequate for growing pigs from 28 to 53 ㎏. Rate of gain and feed efficiency of pigs fed the dietary protein level of 14% + 0.2% l-lysine was similar to pigs fed dietary protein level of 16%.There were no difference in digestibility and nitrogen retention of diets supplemented with 0.2% l-lysine with other dietary protein level. Therefore, diets supplemented with 0.2% l-lysine could spare 2% of dietary protein for the growers. (3) The dietary protein level of 14% was adequate for finishing pigs from 53 to 90 ㎏. In the rate of gain, pig fed the dietary protein level of 12% supplemented with 0.2% l-lysine was slightly higher, but improved effect in rate of gain during finishing period was somewhat lower than growing period. However, improvement in feed efficiency during finishing period for l-lysine fed group was more remarkable than in rate of gain. Digestibility and nitrogen retention of diets by adding 0.2% l-lysine were not affected. (4) Although there was no significant difference, dressing percentage and back fat thickness was slightly increased, and loin aye area was slightly decreased when pigs were fed dietary protein level of 14% supplemented with 0.2% l-lysine from 28 to 53 ㎏ and 12% supplemented with 0.2% l-lysine from 53 to 90 ㎏. (5) In economic analysis feed cost required per ㎏ of body weight gain for pig fed the dietary protein level of 14-12% supplemented with 0.2% l-lysine was less than that for those fed the other dietary proten levels. Based on the above mentioned results, it may be concluded that adequate level of dietary protein for weanling-growing-finishing pig would be 18-16-14%. It would also be clear that supplementation of l-lysine at 0.2% level in the pig rations from weanling to market weight might be able to spare 2% of dietary protein.
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돼지의 단백질과 에너지 요구량결정에 관한 연구 3 . 비육돈의 단백질과 에너지 요구량에 관한 연구
유문일,한인규 ( Moon I . Yoo,In K . Han ) 한국축산학회 1982 한국축산학회지 Vol.24 No.2
This experiments were conducted to investigate the dietary protein and energy requirements of finishing swine (60-100㎏). The experimental groups were divided into 9 groups combining three levels of dietary protein (High, Medium, and Low level) and three levels of digestible energy (High, Medium, and Low level) based on the nutrient requirements of swine in NRC (1973). The results obtained are summarized as follows: 1. Although there were significant differences in daily gain and feed efficiency (P $lt; 0.01), the optimum levels of dietary protein and digestible energy were 12% and 3,300㎉/㎏, respectively. Daily gain was decreased and feed efficiency was depressed as the levels of dietary protein and energy were decreased. Feed intake was also decreased as the level of dietary protein was decreased from 14 to 10% but did not show any consistent tendency by the level of dietary energy. 2. The digestibility for crude protein, crude fat and crude fiber of experimental diets fed during phase 5 tended to decreased as the level of dietary protein was decreased. But the digestibility of crude protein, crude fat and crude fiber were not affected by the levels of dietary energy 3. Dressing percentage, carcass length, lean-meat percentage and back fat thickness were not significantly different among groups, but there was significant difference in loin eye area among groups (P $lt; 0.05). Dressing percentage, carcass length and lean-meat percentage were not affected by the levels of dietary protein and energy, but back fat thickness tended to be decreased as the levels of dietary protein and energy were decreased. Back fat thickness was greatly affected by the level of dietary protein than that of energy. Loin eye area was enlarged as the level of dietary protein was increased and as the level of dietary energy was decreased. 4. The linear regression equations were derived from the data of feeding trials. The proper linear regression equations obtained from the present studies to calculate the protein and energy requirements are as follows: Y = 528.10 + 0.68X (Y = daily gain, X = protein intake) Y = 4.02 + 0.073X (Y =daily gain, AX = DE intake) The calculated daily protein and DE intake obtained from the equation were as follows: CP intake; 400g, DE intake; 10,904㎉, daily gain; 800g
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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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