Eprin 이 육성비육돈의 성장능력 및 영양소 이용율에 미치는 영향

한인규(I . K . Han),권관(K . Kwon),권찬호(C . H . Kwon),신인수(I . S . Shin),한영근(Y . K . Han),김성우(S . W . Kim) 한국영양사료학회 1995 韓國營養飼料學會誌 Vol.19 No.4

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.

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.

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.

육성비육돈에 대한 Virginiamycin 의 성장촉진효과

유문일,한인규,권관,손광수,강세원 ( M . I . Yoo,I . K . Han,K . Kwon,K . S . Sohn,S . W . Kang ) 한국축산학회 1985 한국축산학회지 Vol.27 No.5

This experiment was conducted to compare the growth promoting effect of virginiamycin with some other antibiotics available in Korea for growing-finishing swine. A total of 288 three way crossed hogs (LW × L × D or H) weighing an average 16 ㎏ were used in six treatments, consisting of control, virginiamycin (40ppm), flavomycin(10ppm), bacitracin(100 ppm), virginiamycin(20ppm) + colistine(4ppm) and Bacitracin(20ppm) + colistin(4ppm) groups, for a period of 114 days. Daily weight gain of virginiamycin fed group was considerably (p$lt;0.05) better than that of control group. However, there were no statistical differences among hogs fed different antibiotics. Feed intake as not affected by the addition of antibiotics. Feed efficiency of virginiamycin group was superior to that or control group, although no statistical differences were found among treatments. It seemed that hogs fed antibiotics utilized the dry matter, crude protein and crude fiber more efficiently than those fed control diet, without any significant differences among antibiotics fed groups. Digestible energy values and energy utilizability of antibiotics fed groups were better than those of control group.

에너지와 단백질함량 조절에 의한 계단식 성장사양이 체성장과 유선발달 및 번식성적에 미치는 영향

안국환,한인규,권관,조재순,최윤재 ( K . H . Ahn,I . K . Han,K . Kwon,J . S . Cho,Y . J . Choi ) 한국영양사료학회 1996 韓國營養飼料學會誌 Vol.20 No.3

유전공학성장호르몬에 의한 돼지의 생산성향상

정정수(C . S . Chung),권관(K . Kwon),한규범(K . B . Han),김인수(I . S . Kim) 한국축산학회 1989 한국축산학회지 Vol.31 No.11

The present study was undertaken to determine the effects of recombinant porcine growth hormone(rpGH, supplied by Lucky, Ltd., Korea) on growth performance of growing pigs. Twelve barrows with an average initial live weight of 48kg were allocated to either control group(n=6) or rpGH group(n=6). Recombinant rpGH (70ug/kg BW) or vehicle was injected in the extensor muscle daily for 49 days. Pigs were fed a diet containing 16.45% of crude protein and 0.85% of lysine. As expected, serum rpGH was elevated by rpGH injection. Administration of rpGH increased average daily gain by 6%(1.04 vs 1.11kg), improved feed/gain by 10%(3.203 vs 2.895; p $lt;0.05), decreased backfat thickness by 19%(3.60 vs 2.91cm; p $lt;0.01), and increased loin eye area by 5%(36.84 vs 38.53㎠). These results indicate that rpGH administration improves swine growth performance, suggesting that considerable potential exists for development of a GH-based growth promotant for the swine industry.

국내 사육되고 있는 은여우의 번식실태조사

서경덕(K . D . Seo),권관(K . Kwon),한기영(K . Y . Han),김선균(S . K . Kim) 한국축산학회 1989 한국축산학회지 Vol.31 No.5

The silver fox. a seasonal breeder of great economic importance, has a low reproductive efficiency in Korea. This study was carried out to obtain the basic data about the reproductive physiology of the silver fox being raised in Korea. A total of 135 litter in 1987, of which 83 were raised at Taekwanryung (N: 38.5°, E:128.8°),52 were at Yangsan (N:35.5°, E:129.0°), were used for this study. The vixens breeding started on January 27 and continued until March 25. The mode and mean was March 5 with an standard deviation of 18 days for vixens raised at Taekwanryung, while the breeding of vixens raised at Yangsan began February 16 with a standard deviation of 11 days. The mean date for mating of yearling was about a fortnight later them that of vixens of two and more than two of age which were all raised in two areas. The linear model was used to measure the effect of raising region, parity and the date of mating on litter size. The mean litters were 4.78±0.14 kits. The difference in litter size among 2 raising area, 2 parities and 4 dates of mating was not significant. However, the vixens raised in southern area, having the first parity and mating between March 1 and March 15 had more kits per litter than in the northern area, the 2nd parity and the other dates of mating.

산란계에 대한 칼슘 공급제의 사료가치 비교시험 2 . 칼슘 공급수준이 산란율 , 난각질 및 사료효율에 미치는 영향

한인규,이규호,이상진,강태홍,권관 ( In K . Han,Kyu H . Lee,Sang J . Lee,Tae H . Kang,K . Kwon ) 한국축산학회 1981 한국축산학회지 Vol.23 No.3

This experiment was conducted to study the effects of various levels of dietary calcium (1.75%, 2.25%, 2.75%, 3.25% and 3.75%) on laying performances. Experiment was carried out with 1500 White Leghorn layers for a period of 22 weeks. The results obtained are summarized as follows. 1 . Egg production rate and feed. efficiency were significantly (p$lt;0.05) improved as the calcium level of diet increased, however, there were no significant differences between 3.25% and 3.75% of calcium level in egg production rate and feed efficiency. 2. Average egg weight was not influenced by the levels of calcium in the diets. 3. Ratios of egg shell thickness and shell weight to egg weight were significantly (p$lt;0.05) increased as the calcium level of diet increased, however, there were no significant differences in egg shell qualities between 3.25% and 3.75% of calcium level. 4. No difference was found either in calcium and phosphorus contents of tibia or in nutrient utilizability of experimental diets. However, calcium utilizability was highest at 2.75% of dietary calcium level. Based on the above results it may be concluded that the laying performance and feed efficiency could be improved by increasing the calcium level in diet up to 3.25%.

갈대의 사료자원 개발에 관한 연구 1 . 육성돈에 대한 갈대의 사료적 가치

박종만,전우복,한인규,연정웅,권관,유문일,명규호 ( C . M . Park,W . B . Chun,I . K . Han,J . U . Yeon,K . Kwan,M . I . Yoo,K . H . Myung ) 한국축산학회 1983 한국축산학회지 Vol.25 No.3

This experiment was conducted with 72 crossbred pigs to evaluate the nutritive values of dried reed meal (Phragmites communis Trinius) in growing-finishing swine rations replacing 10% wheat bran with dried reed meal (DRM) at the levels of 0,3,6 and 9%. The results obtained are summarized as follows. 1. It was found that DRM was markedly high in crude fiber, however, other nutrient contents including protein, amino acids and most minerals were lower than those of wheat bran. The values of DE and ME of DRM were 1,787 and 1,699 ㎉/㎏, respectively and those of wheat bran were 3,273 and 3,029 ㎉/㎏, respectively. In general, nutrients in wheat bran were more digestible than those in DRM. 2. Nine percent substitution of DRM for wheat bran in growing-finishing swine diet did not severely affect the growth rate but increased feed consumption and feed conversion rate. Digestibilities of dry matter, crude protein, crude fat, crude fiber, nitrogen retention and energy digestibility or metabolizability tended to be decreased as the level of DRM in the rations increased. 3. Carcass quality evaluation revealed that the back fat thickness of pigs tended to be thinner, however, dressing percentages, carcass lengths and loin eye areas decreased, as the level of DRM in the diets increased. Based upon the results of present study, it may be concluded that partial substitution of DRM for grain by-products in the ration of growing-finishing swine may be possible, if digestible energy, indispensable amino acids and phosphorus sources are properly added.