두과목초와 성상이 다른 농후사료의 공급이 고장병 발생원인에 미치는 Rumen 의 생리학적 연구

지설하 ( Sul Ha Chee ) 한국축산학회 1967 한국축산학회지 Vol.9 No.1

This experiment was conducted to study several indirect origination ai bloat in the rumen with three heads of wether which were divided into three plots that were plot L. (supplied an alfalfa) plot M. (supplied an alfalfa-corn meal), and plot EM. supplied an alfalfa expanded corn meal). The results of investigation are as follows: Excretion of nitrogen in feces and urine of the plot L. was higher than plot M. or EM. The standard deviation of each treatment was 24.39±7.20 in plot L. 23.00±7.37 in plot M., and 19.01±4.97 in plot EM., respectively The content of ammonia (NH₃) in the rumen liquor showed that plot M. and EM. were slightly higher than plot L. The standard deviation of each treatment was 3.93±0.29 in plot L. 2.92±0.9 in plot M. and 1.60±0.99 in plot EM in one`s own way. The plot M. and EM. produced more gas than plot L. in the rumen liquor fermented in vitro. Standard deviation of each treatment was 0.97±1.87 in plot L, 2.37±0.95 in plot M. and 0.8±1.29 in plot EM. respectively. The plot M. and EM. were slightly lover than plot L. in pH of rumen liquor. Volatile fatty acids the rumen liquor of plot L. showed more acetonaemic form than plot M. EM. The content of urea in the vein blood was correlated with nitrogen content of feces and urine. Results of the trial showed that the source of carbohydrate feeds (cereals) would induce bloat.

부로일러에 대한 강류대치사료로서의 해조분의 이용 시험

염월병,지설하,이영철 ( Wol Heong Youm,Sul Ha Chee,Young Chul Rhee ) 한국축산학회 1976 한국축산학회지 Vol.18 No.5

Two experiments were conducted to evaluate the nutritive value of various kelp meal collected from Sokcho, the East seaside, for broiler chicks. In the first trial mixed kelp meal was, substituted for the wheat bran at the level of 4, 8, 12 and 16% in the ration of broiler chicks for 8 weeks. The second trial was conducted to find out the effectiveness of 4 kinds of dried kelp meals (Sargassum F.A., Monostroma N.W., Costarica C.S., and Mixed kelp meal) at the level of 10% substitution for the wheat bran on growing chicks for 3 weeks period. The results obtained were summarized as follows: 1. Crude protein, crude fat, crude fiber, crude ash and nitrogen free extract content (N.F.E.) of the kelp meals were 4.97-11.73, 0.27-1.85, 5.08-15.47, 32.77-44.78 and 24.11-34.71 respectively. These analytical values were lower in crude protein and higher in crude ash in comparison with the kelp meal which is produced in Pusan and Mokpo seasides. 2. Metabolizable energy(ME) value per gram of kelp meal was measured to he 1.667 ㎉. This ME value coincides with the value of wheat bran. 3. No significant difference were observes in body weight gain and feed efficiency, when the kelp meals were supplemented at the level of 4, 8 and 12% in a broiler ration as a partial substitute for the wheat brans, anti also there were no difference in body weight gain and feud conversion rate when the birds fed to various kind of kelp meals produced in Sokcho area. This would mean that there were no adverse effect on growth and feed intake of broilers when they were fed by the kinds of kelp meal. 4. Retention of the nutrients, such as protein, fat and N.F.E. were found to be decreased as the level of kelp meal gradually increased

한우에 있어서 농후사료 급여 수준이 비육효과에 미치는 영향

박광진,지설하 ( Kwang Jin Park,Sul Ha Chee ) 한국축산학회 1977 한국축산학회지 Vol.19 No.5

This study was carried out to find out the optimum level of concentrates to be allowed for the fattening Korean native bulls. Twenty five bulls were used for this trials at Yesan, Chungnam province for 7 months from July. 1976 to February, 1977. Rughages were fed ad libitum and concentrates was allowed at the levels of 0, 0.5, 1.0, 1.5 and 2.0% on body weight. The results obtained from this study were as follows: 1. The final weight of fattened bulls were 303.4, 361.2, 398.5, 422.3 and 456.0㎏ by the different levels of concentrates as 0, 0.5, 1.0, 1.5 and 2.0% of body weight, respectively. The finished body weights were significantly different from the different level of concentrates (P$lt;0.01). 2. The amount of DCP required for 1㎏ of body gain were 0.94, 0.73, 0.80, 0.87 and 0.85㎏ with the concentrates levels of 0, 0.5, 1.0, 1.5 and 2.0%, respectively. The amount of TDN required for 1㎏ of body gain were 12.40, 7.15, 7.23, 8.27 and 7.20㎏, respectively, in order of concentrates levels to be allowed. There was a tendency that feeds efficiency was the highest at the 0.5% of concentrates level among the different levels of concentrates to be fed. 3. The chilled carcass percentages were 52.4, 54.7, 57.1, 59.2 and 60.2% respectively with the levels of concentrates to be fed as 0, 0.5 10, 1 1.5 and 2.0% on live weights. The chilled carcass percentages were increased by the high levels of concentrates to be allowed. This study was carried out to find out the optimum level of concentrates to be allowed for the fattening Korean native bulls. Twenty five bulls were used for this trials at Yesan, Chungnam province for 7 months from July. 1976 to February, 1977. Rughages were fed ad libitum and concentrates was allowed at the levels of 0, 0.5, 1.0, 1.5 and 2.0% on body weight. The results obtained from this study were as follows: 1. The final weight of fattened bulls were 303.4, 361.2, 398.5, 422.3 and 456.0㎏ by the different levels of concentrates as 0, 0.5, 1.0, 1.5 and 2.0% of body weight, respectively. The finished body weights were significantly different from the different level of concentrates (P$lt;0.01). 2. The amount of DCP required for 1㎏ of body gain were 0.94, 0.73, 0.80, 0.87 and 0.85㎏ with the concentrates levels of 0, 0.5, 1.0, 1.5 and 2.0%, respectively. The amount of TDN required for 1㎏ of body gain were 12.40, 7.15, 7.23, 8.27 and 7.20㎏, respectively, in order of concentrates levels to be allowed. There was a tendency that feeds efficiency was the highest at the 0.5% of concentrates level among the different levels of concentrates to be fed. 3. The chilled carcass percentages were 52.4, 54.7, 57.1, 59.2 and 60.2% respectively with the levels of concentrates to be fed as 0, 0.5 10, 1 1.5 and 2.0% on live weights. The chilled carcass percentages were increased by the high levels of concentrates to be allowed.

코리테일종 면양에 있어 생시체중 및 이유시체중의 유전력

신원집,염월형,백윤기,지설하,박영일 ( Won Jip Shin,Wol Heong Youm,Yeon Ki Paik,Sul Ha Chee,Young Il Park ) 한국축산학회 1976 한국축산학회지 Vol.18 No.6

Heritabilities of birth weight and weaning weight at 90 days of age were estimated from the analysis of variance using the data from 311 lambs of Corriedale sheep raised at the Alpine Experiment Station from 1966 through 1974. Heritability estimates obtained were 0.21 for birth weight and 0.26 for weaning weight at 90 days of age. The result obtained in this study suggests that the weaning weight can be considered as an important trait in the selection of lambs at weaning age.

Bypass 단백질 공급이 영양소 소화율 , 반추위내 (反芻胃內) 발효양상 , 젖소의 유생산에 미치는 영향

김준식,장하연,조행연,지설하,하종규 ( Jun Kyu Kim,Ha Yeon Chung,Yoon Yeon Cho,Sul Ha Chee,Jong Kyu Ha ) 한국낙농학회 1992 韓國酪農學會誌 Vol.14 No.1

비유우의 옥수수싸이레지 다급이 유량및 유지량에 미치는 영향

지설하,이성걸 한국축산학회 1963 한국축산학회지 Vol.5 No.1

The performance response when lactating cows were fed high level feeding of corn silage. as a only roughage, were studied in reprications of a 3×3 Latin square design, each treatment represents 3 cows. The 9 cows from 3 treatments that is 3 different corn silage levels were fed for 16 day's main experiment period following 10 day's preliminary period. The corn silage feeding levels were. (A) Basal ration with corn silage of 3% of body weight, (B) Basal ration with corn silage of 8% of body weight. (C) Basal ration with corn silage of 10% of body weight. The result of this study shoved a summary as follows. 1. There was no significant difference among 3 different levels of corn silage feeding in milk production. The production index was 100 for treatment A. 87 for treatment B and 90 for treatment C. However, there was a lute difference in butter fat content with the index of 100 for treatment A. 99 for B and 95.5 for C respectively. 2. In body weight change, There was no difference among 3 treatments, but slight difference occurred between B and C treatments without statistical significance. 3. The ketone body contents in urine was tested, there was no significant level was founded by feeding of high level of corn silage for lactating dairy cows.

한우의 Immunoglobulin G 및 초유성분의 함량

지설하,오대균,임종우,강만석,안병석 한국낙농학회 1991 韓國酪農學會誌 Vol.13 No.4

한우 25두로부터 산차별로 초유는 분만후 24시간 및 168시간까지는 각파 12시간 및 24시간 간격으로, 정상유는 분만후 10일부터 22일까지는 3일 간격으로 채취하였으며 Ig농도, 회분 및 단백질함량의 변이가 비유 첫 22일간 분석되었다. 산차별에 의한 초유의 Ig농도는 분만직후 초산의 Ig농도가 가장 낮은 반면 3산은 초산과 5∼7산에 비해 각각 1.56 및 1.54배로 산차중에서 가장 높았으며 (P<0.05), 또한 초유의 총 고형분, 회분 및 단백질의 함량도 분만직후 초산이 가장 낮았으며 (P<0.05), 3산이 가장 높았다(P< 0.05). 분만직후 초유의 전평균 lg농도(295.95±16.802㎎/㎖), 회분(1.26±0.048%) 및 단백질(17.27±0.279%)의 함량은 분만후 48시간까지 급속히 감소하였으며(P<0.05) 총고형분(26.58±0.296%)의 함량도 분만후 24시간까지 감소하였고(P<0.05), 정상유의 각 성분함량은 각각 1.38±0.035㎎/㎖, 0.72±0.002%, 3.69±0.013% 및 13.28±0.021%였다. 또한 초유에서의 IgG 농도의 감소율은 초산이 다산보다 높았다. Colostra and milks were collected from 25 Korean native cows in five lactation groups at 12 hr intervals from O to 24 hr and 24 hr intervals from 48 to 168 hr postpartum and 3 days intervals from 10th to 22nd day postpartum and analyzed for concentration immunoglobulin G(IgG), total solids(T. S.), ash and protein during the first 22nd day of lactation. IgG concentration in colostrum from cows of first lactation obtained immediately after parturition was lower than those of second and later lactation, where as that of third lactation was highest(P< 0.05) among all lactation groups except fourth lactation, almost 1.56 and 1.54 times in IgG concentration compared to the first lactation and fifth to seventh lactation, respectively. Also the contents of T. S., ash and protein in colostrum at the first milking postpartum in first and third lactation were lower(P<0.05) and higher(P<0.05) than all lactation groups, respectively. The total mean concentrations of IgG(295.95±16.802㎎/㎖), ash(1.26±0.048%)and protein(17.27±0.297%) in colostrum at first milking postpartum were reduced(P<0.05) rapidly for 24 and T.S. ( 26.58±0.296 %) for 48 hr postpartum. Contents of IgG, ash, protein and T. S of normal milk were 1.38 ±0.035㎎/㎖, 0.72 ±0.002 %, 3.69±0.013 % and 13.28 ±0.021 %, respectively. The rate of reduction in IgG concentration from colostrum was greater in first lactation than in multipara.

자급사료 생산기술 향상을 위한 연구방안

지설하 한국축산학회 1978 한국축산학회지 Vol.20 No.5

한국축산업의 장기발전방향

지설하 한국축산학회 1985 한국축산학회지 Vol.27 No.9

에너지와 蛋白質 供給源에 依한 反芻胃內 營養素 利用性 및 反芻胃微生物에 關한 硏究

지설하,이상철,정하연 충남대학교 농업과학연구소 1996 농업과학연구 Vol.23 No.2

This study was conducted to examine the effects of dietary energy and protein sources on the rumen microbial population of sheep. The results obtained were summarized as the follows; 1. Ruminal pH was highest in sheep fed the diet rapidly degraded in the rumen(F-F) as a energy (barley plus beet pulp) and protein source (rapeseed meal), and lowest in the diet (F-S) of rapidly degradable energy source plus slowly degradable protein source (corn gluten meal + cotton seed meal) without affecting by postfeeding time. 2. Ruminal ammonia concentration was higher in corn (slowly degradable) for energy source and rapeseed meal (rapidly degradable) for protein source (S-F) than others, and abruptly increased at 1 hr after feeding regardless of treatments. 3. Concentration of ruminal total volatile fatty acid, acetate and propionate were highest in F-S and peaked at 1 hr after feeding firstly and formed second peak at 9hrs, respectively. 4. Digestibilities of the proximates and ADF were not affected by treatment but NDF was highest in F-F. 5. Nitrogen retention was highest in S-F and lowest in F-F and F-S. 6. Digestibility and metabolizability of energy, contents of DCP, TDN, DE and ME were not affected by treatment. 7. Number of total rumen bacteria showed a peak at 3hrs after feeding and there after decreased. The number of viable rumen bacteria were the greatest in sheep fed the diet of F-F as 7.16×10^11 and the fewest in that of F-S as 2.85×10^11. 8. Cellulolytic bacteria in the rumen of sheep was greatest in diet of S-S and other functional bacteria were not affected by treatments.