도입청예연맥품종의 생육특성 및 생산성에 관한 연구

양종성(J . S . Yang),한흥전(H . J . Han),이만상(M . S . Lee),송진달(J . D . Song),박근제(G . J . Park) 한국축산학회 1987 한국축산학회지 Vol.29 No.3

Field experiment was conducted to test the adaptability and forage yield of introduced oats varieties for soiling crops rotation. The results are summarized as follows: 1. Jeonjin and Cravache of the tested varieties have been identified as early varieties. Their heading date were 30th of May. 2. Taepung, Forage queen and Foothill with 130㎝ in plant height were the tallest varieties. Early varieties belong generally under short plant category. 3. Taepung and Forage queen with more than 1,000 ㎏ per 10a in dry matter yield are excellent. 4. There were significantly positive correlation between dry matter yield and some characteristics such as plant height, stem diameter and leaf weight. 5. Cayuse and Jeonjin of the tested varieties have been considered as good varieties for cropping system on upland because of excellent yield potentiality and earliness.

Silage 용 옥수수의 숙기별 부위별 수량 화학성분 및 가소화 양분 수량의 변화

양종성(J . S . Yang),한흥전(H . J . Han),최영원(Y . W . Choe),임근발(K . B . Lim) 한국축산학회 1990 한국축산학회지 Vol.32 No.4

This study was conducted to estimate dry matter production, chemical component and digestible dry matter yield of corn with growing stage. Corn(var. suwon 19 and suwon 29) was harvested at milk, dough, yellow ripe and full ripe stage and devided into three parts of leaf, stalk and ear. Dry matter, crude protein, crude fibre and NFE contents of plant parts were measured at each growing stage. Dry matter yield peaked at yellow ripe stage. From milk to full ripe stage, leaf had more protein content than other plant parts. Nitrogen free exetracts(NFE) content was highly estimated in ear but low in leaf. Crude fibre content was highly estimated in stalk but low in ear. Crude protein yield per 10a was 93-102kg at milk stage in leaf and 90-94kg in ear at full ripe stage. While, most crude fibre was accumulated in stalk and leaf. NFE yield per 10a was superior to crude protein and crude fibre yield. Digestible dry matter yield per 10a peaked at yellow ripe stage on suwon 19(1353.3kg/10a) and at full ripe stage on suwon 29(1630.4kg/10a).

대맥 및 호맥의 건물생산성과 사료가치에 관한 연구 2 . 생육단계별 화학성분 , 소화율 및 에너지 함량변화

김정갑(J . G . Kim),양종성(J . S . Yang),한민수(M . S . Han),이상범(S . B . Lee) 한국축산학회 1988 한국축산학회지 Vol.30 No.3

Growth of rye cv. Paldang and barley cv. Bunong were analysed to determine pattern of the Weender components and their influence on digestible dry matter and net energy accumulation of the plants associated with stage of morphological development. The experimental fields were laid down as a randomized block design with 4 replications from 1984 to 1986 at Livestock Experiment Station in Suweon. Concentrations of crude protein and crude fat were decreased as the growth of plants advanced. The highest accumulation of crude protein occurred with a synthesis rate of 5 ㎏ (barley) and 6.1㎏/10a (rye) at stage of growing point differentiation, when the plant showed a greatest enlargement of assimilable leaf area. Crude fibre as well as cell-wall constituents in the plants was increased markedly immediately, after the stage of growing point differentiation and it was the lowerest at stage of blooming. Cellulose was found to be a main component of the cell-wall constituents both in rye and barley. Value of net energy in rye and barley was decreased as the morphological development progressed and it was the lowest at stage of blooming by 4.98 and 5.03 MJ-NEL/㎏ dry matter. However, NEL value of barley increased during maturity of grain and it showed 5.16 MJ at soft dough and 5.32 MJ/㎏ at hard dough. NEL value of rye was still low at stage of maturity. The highest yields of net energy lactation were obtained at stage of soft dough in rye and stage of hard dough in barley with a value of 6345 MJ and 6331 MH/10a, respectively.

대맥 및 호맥의 건물생산성과 사료가치에 관한 연구 1 . 생육특성 및 건물축적형태에 대한 생리적분석

김정갑(J . G . Kim),양종성(J . S . Yang),이상범(S . B . Lee),한민수(M . S . Han) 한국축산학회 1988 한국축산학회지 Vol.30 No.2

In three year`s investigation, growth of rye (cv. Paldang) and barley (cv. Bunong) was analysed to determine the pattern of physiological growth parameters and its relationship to yield components and dry matter accumulation. Experimental fields were designed as a randomized block with 4 replications at Livestock Experiment Station in Suweon. Assimilable leaf area was shown the greatest enlargement at stage of growing point differentiation and it showed maximum leaf area index (LAI) at heading stage with a value of 13.14 for rye and 8.95 for barley. LAI showed a linear response to increasing of plant population (P◎0.01). Net assimilation rate was decreased as the morphological development advanced both in rye and barley. Absolute growth rate (Abs. GR) of dry matter was associated with assimilable leaf area positively. The highest Abs. GR were 31.3 at heading stage in rye and 39.2 g/㎡. day at flowering in barley, when the plants reached greatest leaf area. Maximum dry matter yields of rye and barley were 1292 at soft dough and 1253 ㎏/10a at hard dough, respectively. The highest yields of digestible dry matter were also obtained at stage of soft dough of rye and hard dough of barley by 718 and 741 ㎏/10a, respectively.

Sorghum 〔 Sorghum bicolor ( L . ) Moench 〕 식물의 건물 축적형태와 에너지 가치에 관한 연구 2 . 비구조성 탄수화물의 합성 및 축적형태와 NEL

김정갑(J . G . Kim),양종성(J . S . Yang) 한국축산학회 1987 한국축산학회지 Vol.29 No.6

Growth of sorghum and maize was analysed to determine the synthesis and accumulation pattern of reserved carbohydrates and its relationship to net energy value of the plants. The experimental fields were laid down as a randomized block with 4 replications at Livestock Experiment Station in Suweon from 1984 to 1986. The results are summarized as follows: 1. Concentration of non-structural carbohydrates was associated with increasing of assimilable leaf area (P≤0.1%). TNC accumulation was occurred rapidly from the growing point differentiation and. it showed the highest content at soft dough with a value of 16.73% in sorghum and 29.51% in maize. During the maturity, TNC was declined comparatively as the starch increased. 2. Non-structural carbohydrates was mainly accumulated as mono-and disaccharose both in sorghum and maize. Mono-and disaccharose was decreased when the temperature exceeded. 28/18℃ (day/night), while structural carbohydrates, especially cellulose and other cell-wall constituents increased. 3. Digestible dry matter content in sorghum was decreased from 81.1% at 3-leaf stage to 58.5% at maturity. But DDM in maize was less changeable in the whole vegetative development. 4. Net energy value showed linear response to the synthesis and accumulation of reserved carbohydrates. Net energy for lactation (NEL) in maize was increased during the maturity and it reachad maximum at physiological maturity. However, the increment of NEL value in sorghum was not noticeable.

수종 화본과 야초류및 남방형화본과 목초류의 생육특성에 관한 연구

김동암,양종성 ( D . A . Kim,J . S . Yang ) 한국축산학회 1975 한국축산학회지 Vol.17 No.5

To evaluate the growth characteristics and seed production, two imported warm season grass and seven native grass species were divided into two groups, tall and mid-grass and grown under pot and field conditions. The results obtained are as follows; (1) A range of 25 to 30 days was required from seeding to 50% emergence of the; grass species when sown in spring. The establishment percentage of native grass species showed a range of 6.3 to 19.5% and that of imported grass species was 22.7 to 23.2%. (2) Of the grass species, Pennisetum japonica, Andropogon micranthus and the imported grass species were the highest in seedling height. In tillering characters, Andropogon micranthus showed the highest, Spodiopogon cotulifer, the lowest and the other species found to be medium. (3) It was found that Panicum coloratura was one of the eariest heading species. The heading of Panicum coloratura was observed at the end of July, but that of Paspalum dilatatum and P. thunbergii was recorded at the beginning of August and the other species appear to be more later. (4) Calmagrostis arundinacea was one of the earliest starting species sprouting on 15th of March, Pennisetum japonica was the latest species and the other species found to be medium. Calmagrostis arundinacea showed the longest growing characteristics, 246 days, intermediate species were Paspalum dilatatum, Panicum and Andropogon micranthus, and Pennisetum japonica found to be the shortest. (5) In the percentage of germination, Pennisetum japonica and Arundinella hirta were the highest, 12.0% and 78.6%, but Spodiopogon sibiricus and S. cotulifer showed the lowest, 15.3% and 11.3% respectively. (6) In seed production, Arundinella hirta and Spodiopogon cotulifer gave a satisfactory performance, 126 ㎏ per 10a, but all other species were less, ranging 58 to 86 ㎏ per 10a.

호맥 (胡麥) ( Secale cereale L . ) 의 청예이용 (靑刈利用) 을 위한 재배모형에 관한 연구 2 . 호밀 ( 胡麥 ) 의 월동전 청예 이용과 재배모형구성에 따른 청예사료생산성

임근발(K . B . Lim),양종성(J . S . Yang),한흥전(H . J . Han) 한국축산학회 1990 한국축산학회지 Vol.32 No.3

Two experiments using lambs were conducted to evaluate the nutritive value of alkaline hydrogen peroxide(AHP) treated rice straw(RS) for rumi nants. The AHP treatment increased cellulose contents but decreased acid detergent lignin and hemicellulose. Lambs fed the low RS-T diet gained significantly (p$lt;0.05) faster than did lambs fed other diets while lambs fed the high RS-U diet gained the slowest (P$lt;0.05). Apparent digestibilities of NDF, ADF and cellulose were significantly(p $lt;0.05) increased with AHP treated diets. Ruminal pH was lower when lambs were fed AHP treated diets. However, ruminal ammonia concentrations were the highest when lambs were fed the high RS-U diet. Total VFA`s and acetate production were higher(p$lt;0.05) with the high RS-T diet, however, no differences were found in remaining acid productions among treatments. Diunal pattern for total VFA`s showed that the high RS-T diet kept higher VFA`s is concentration than did remaining diets. Results of these experiments indicate that AHP treatment results in a substantial improvement in the extant of utilization of RS by ruminants.