호맥건초의 생육단계와 절단이 산양의 채식행동별 에너지 소비에 미치는 영향

문상호,전병태,광전수헌 (廣田秀憲) ( S . H . Moon,B . T . Jeon,H . Hirota ) 한국축산학회 1997 한국축산학회지 Vol.39 No.4

To determine the effect of the physical form of ration on energy metabolism in ruminants, this experiment was conducted through evaluating gas exchange and energy cost associated with feeding behavior in goats fed rye hay through a respiration trial. Unchopped and chopped hay 2 cm in length at the boot and heading stage were offered ad libitum to twelve goats. The O₂ consumed, CO₂ and CH, produced, and heat production were slightly higher in groups fed unchopped hay than in groups fed chopped hay at either the boot or heading stage. Diurnal changes of O₂ consumed, CO₂ and CH, produced, and heat production exhibited the similar patterns in all groups, reaching a peak from 12 hr to 19 hr. On the other hand, O₂ consumed was not correlated with voluntary intake of dry matter (VDMI), digestible dry matter (VDDMI) and digestible energy (VDEI) but CO₂ and CH4 produced were closely correlated (P$lt;0.05 or 0.01) with VDMI, VDDMI and VDEI. Heat production was closely related (P$lt;0.05) only to VDEI. Energy cost of eating was higher in groups fed chopped hay than in groups fed unchopped hay at both stages, although there were no significant differences. However, that of rumination was greater in groups fed unchopped hay than in groups fed chopped hay. Energy cost per minute was the lowest during eating and was higher for standing than for lying in rumination in all groups. There was more spendable energy in rumination and resting than in eating and this was greater in groups fed hay at boot stage than in groups fed hay at heading stage. This can be interpreted to mean that the influence of the physical form of hay on energy metabolism is greater for low quality hay than for high quality hay.

반축가축영양 ; 호맥건초의 생육단계와 절단이 산양의 질소 및 Energy Balance 에 미치는 영향

문상호(S . H . Moon),전병태(B . T . Jeon),광전수헌(H . Hirota) 한국축산학회 1995 한국축산학회지 Vol.37 No.1

This experiment was carried out to study associative effects of the chopping of hay at two stages of maturity on the nitrogen balance, nutritive value and energy balance in goats fed rye hay. Twelve Japanese goats were fed rye hay ad libitum in a unchopped form or chopped to 2 cm of chopping lengths. They were grouped into tetrads as follows: B I and B II were fed with unchopped and chopped hay at the boot stage, H I and H II were led unchopped and chopped hay at the heading stage respectively. Nitrogen intake(NI) and digestible nitrogen (DN) were significantly higher(p$lt;0.05) in groups (B I and B II) fed hay at boot stage ttran in groups(H I and H II) fed hay at heading stage. However, the differences corresponding with the chopping of hay were not accepted at both growth stages. Nitrogen losses as feces(FN) and urine(UN) were similar to the results for NI and DN, RN was high in groups(B I and B II) fed hay at the boot stage, although there was no significant difference (p$gt;0.05), but that had little differences in relation to the chopping of hay at both growth stages. On the other hand, the ratio of FN to NI wars higher in H I and H II than in B I and B II, while there were no great differences(p$gt;0.05) between unchopped hay and chopped hay at both growth stages. The ratio of UN to NI was similar of both growth stages. GE in groups(H I and H II) fed hay at the heading stage were significantly higher(p$gt;0.05) than those in groups fed hay at the boot stage. However, DE and ME were greater in groups(B I and B II) fed hay at the boot stage, although there was no significant difference for ME. TDN and DCP were also significantly higher(p$gt;0.05) in B I and B II than in H I and H II. No differences were recognized corresponding to the chopping of hay at both stages for GE, DE, ME, TDN and DCP. EI was a little lower in H I and H II than in B I and B II but was not significant. Energy lasses in FE, UE, CH, and HP did not differ in relation to the chopping and growth stage of hay. RE was 148.9, 108.9, 23.2 and 51.9 MJ/㎏W^(0.75) for B I, B II, H I and H II respectively, and thus RE in groups(B I and B II) fed hay at boot stage were significantly larger(p$lt;0.05) than those in groups(H I and H II) fed hay at heading stage. But there were no effects of the chopping of hay at both growth stages. RE was closely related with dry matter and energy intake(p$lt;0.05), especially with digestible dry matter and digestible energy intake(p$lt;0.01).

Petrochemistry and stable isotopes of granites around the Eonyang rock crystal deposits

문상호(Moon S.H.),박희인(Park H.),Edward M. Ripley,허순도(Hur S.D.) 대한지질학회 1998 지질학회지 Vol.34 No.3

펄스모드 스위칭 직류전원 장치에 적합한 AC/DC 컨버터

문상호(S.H.Moon),노의철(E.C.Nho),김인동(I.D.Kim),김흥근(H.G.Kim),전태원(T.W.Chun) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-

This paper describes a novel multilevel ac/dc power converter suitable for the protection of frequent output short-circuit. The output dc power of the proposed converter can be disconnected from the load within several hundred microseconds at the instant of short-circuit fault. The rising time of the de load voltage is as small as several hundred microseconds, and there is no overshoot of the dc voltage because the dc output capacitors keep undischarged state, Analysis and simulations are carried out to investigate the operation and usefulness of the proposed scheme

호맥건초의 (胡麥乾草) 생육단계와 절단장이 산양의 소화율 , 자유채식량 및 반추위액 (反芻胃液) 성상에 미치는 영향

문상호(S . H . Moon),전병태(B . T . Jeon),광전수헌(H . Hirota) 한국영양사료학회 1995 한국영양사료학회지 Vol.19 No.1

호맥건초의 생육단계와 절단이 산양의 채식 및 반추행동에 미치는 영향

문상호 ( S H Moon ),전병태 ( B T Jeon ),광전수헌 ( H Hirota ) 한국축산학회 1995 한국축산학회지 Vol.37 No.2

To determine feeding behavior in relation to quality and physical form of feed, this experiment was cunducted by feeding trials to evaluate eating and rumination behavior in goats fed a rye hay in a unchopped or chopped form harvested at two stages of maturity. Rye hay dried at two different stages of growth for experimental rations was offered ad libitum in the unchopped or 2cm long chopped form to twelve goats. Although there were no significant differences (P$gt;0.05), eating time was longer in the chopped form than in the unchopped form at harvested both growth stages, but times for the different growth stages were hardly different. Rumination time was longer in the group fed unchopped hay harvested at the boot stage and in the group fed chopped hay harvested at the heading stage, however, the differences were not significant (P$gt;0.05). Resting time was in contrast to rumination time. Goats in all groups exhibited the similar behavioral patterns, showing longer periods of eating from 12:00 to 19:00 and the most vigorous rumination after 19:00. However, the periods of rumination in groups fed hay harvested at the heading stage were greater than in groups fed hay harvested at the boot stage. Unitary time of eating per 100g or 100KJ of ingested nutrients was longer in groups fed chopped hay than in groups fed unchopped hay harvested at both growth stages, but there were no significant differences (P$gt;0.05) except for crude protein (P$lt;0.05). Unitary time of rumination per 100g or 100KJ of ingested nutrient was all long in the group fed unchopped hay harvested at the boot stage (P$gt;0.05) but was little different at heading stage. Unitary rumination time was significantly longer (P$lt;0.05) in groups fed hay harvested at the heading stage than in groups fed hay harvested at the boot stage. Number of chews was more numerous in groups fed unchopped hay than in groups fed chopped hay harvested at both stages and that was also greater at the heading stage than at the booting stage, although there were no significant differences (P$gt;0.05). As time past, number of chews per bolus tended to decrease in groups fed hay harvested at the boot stage but tended to increase in groups fed hay harvested at the heading stage. The result of chewing time per bolus was similar to that of number of chews. Chewing speed obtained by dividing the number of chews by chewing time was faster in groups fed unchopped hay than in groups fed chopped hay during the whole period and was faster in groups fed hay harvested at the heading stage than in groups fed hay harvested at the boot stage. Chewing speed was also the fastest during the period of 11:00-17:00 and tended to decrease therefore in all groups. Consequently, it is considered that feeding behavior is largely influenced by quality, chopping and intake of roughage.

섬유소원의 차이가 한우의 저작행동에 미치는 영향

전병태,박인호,이상무,문상호,김경훈,김준선,손중천 ( B . T . Jeon,I . H . Park,S . M . Lee,S . H . Moon,K . H . Kim,J . S . Kim,J . C . Son ) 한국축산학회 1997 한국축산학회지 Vol.39 No.4

This experiment was conducted to estimate the effect of different roughage sources, rice straw(RS), wild oat (WO) having high nutritive value and wild oat mixed with baggase(WBM) having high fiber content, on the chewing behavior in eating and ruminating. Three Korean native bulls, averaging 242.3±0.58㎏ body weight, were used for the experiment. The experiment was consisted of a 10-day preliminary and a 2-day collection period with 3×3 Latin squares. Experimental diets contained a 50:50 ratio of roughage to concentrate and were fed at 2.0% level of body weight. An average time spent on eating was 112.2, 63.0 and 52.5 min. and that on ruminating was 355.7, 208.2 and 261.5 min. for RS, WO and WBM, respectively. Ruminating time per DM kg ingested was 73.8, 56.0 and 42.9 min. in RS, WBM and WO, respectively. Total chews a day was highest in RS with the number of 21,876.2 and that in WBM was the number of 16,198.8 which was the level of 74% in comparison to RS. Ruminating period was similar in RS and WBM with 12.5 times and 11.3 times and that in WO was lowest with 6.7 times. Average length of a ruminating period was 31.1, 28.5 and 23.1 min. for WBM, RS and WO, respectively. Ruminating and chewing efficiency (voluntary intake/ruminating and chewing time) was highest in WO with 1,398.98 and 1,473.28 and that in WBM and RS was 1,0728 and 1,1368 and 813.28 and 863.48, respectively. It is concluded that the mixture of wild oat and baggase may expect as substitutional roughage source having high possibility in the point of an improvement of roughage quality and an offer of physical nature into rumen in comparison to rice straw.

Sorghum × Sudangrass hybrid 의 입모저장에 관한 연구 ; 1 . 입모저장기간이 생육특성 및 기호성 변화에 미치는 영향

이상무 ( S M Lee ),문상호 ( S H Moon ),백인철 ( I C Baek ),전병태 ( B T Jeon ) 한국축산학회 1994 한국축산학회지 Vol.36 No.1

Growth characteristics and palatability by different harvesting dates were measured in order to determine its availability and effective storage period when sorghum × sudangrass hybrid were stored as foggage. Experiment was carried out with six treatments as follows; T1, T2 and T3 were foggaged at 120, 160 and 200㎝ in plant length and T4, T5 and T6 were foggaged at boot, milk and dough stage on 7 october after regrowth respectively. Rice straw was offered to examine the relative palatability a, control. 1. Growth characteristics such as plant length, leaf length, leaf width, leaf number and stem hardness were decreased with prolongation of foggage period at all treatments. Especially, decrease and falling ratio were a heigher at T5 and T6 than the other treatments. 2. Greeness grade of leaf showed fast decoloration at TI and T2 treatments, but stem showed fast decoloration at TS and T6 treatments. Leaf and stem decolorized in mid-October and mid-november in all treatments. 3. Leaf ratio was deceased with prolongation of foggage period, but stem showed gradually increase. Grain ratio was stable increase at T6 treatments, but not at T5 treatment, 4. Dry matter contents of leaf and grain were stable increased at all treatment but stem was multifarious according to weather conditions. 5. Changes of palatability were high at T1, T2 and T3 treatments untill mid-October, but T4 treatment and rice straw showed high in early December. 6. According to the results obtained in this study, it was suggested that when sorghum x sudangrass hybrid is used as foggage, foggaging period would be suitable until mid-november and growth stage for foggaging would be recommendable from T2 to boot stage for maximum availability.

Fluid Inclusion and Stable Isotope Studies of Eonyang Rock Crystal Deposits

박희인(Park H. I.),문상호(Moon S. H.),허순도(Hur S. D.),우영균(Woo Y. K.) 대한지질학회 1999 지질학회지 Vol.35 No.2

완충지수곡선에 의해 평가된 옥수수 사일리지의 발효품질과 사료가치와의 관계

전병태,김경훈,문상호 ( B . T . Jeon,K . H . Kim,S . H . Moon ) 한국축산학회 1997 한국축산학회지 Vol.39 No.2

The present study was conducted to investigate the relationship between the feed value and fermentation quality of silage evaluated by the rapid titration method. The buffer index value was determined from the amount of 0.1N NaOH consumed in titration of each 0.5 pH step. Thirty four samples of com silage which had been collected from farms were assessed by deriving the buffer index curve. The silages were also analysed by the routine chemical methods for organic acids, dry matter, crude protein, crude fiber and ammonia-nitrogen. Degradability of silage dry matter was measured by incubating samples in nylon bags suspended in the rumen. Duplicated bags were removed at 12 and 24h postincubation. Each of fourteen silages had a same peak position at pH 4.0 on index curve (B type) and showed the characteristics of lactic acid fermentation. Twenty silages with a same position peak at pH 4.5 (C type) were moderately well preserved. The B type silages were higher in dry matter content and lower in crude protein and crude fiber contents compared to the C type silages. It should be noted that the B type silages were ensiled at more profitable maturation stage than the C type silages. Fourteen silages which had been selected randomly were deteriorated in aerobic phase to obtain the spoiled silages. By the results of titrating those extract juice, all of the silages had the same peak positions at pH 5.0 on each buffer index curve (D type) and showed significantly (P$lt;0.001) lower dry matter degarability than the B and C types. The results indicate that feed values of silage can be predicted by the rapid titration method.