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전우복,윤창,노순형 한국초지조사료학회 1986 한국초지조사료학회지 Vol.6 No.1
갈대의 사료자원 개발에 관한 연구 3 . 갈대의 계절별 사료성분과 in - vitro 건물 소화율
전우복,박종만,윤창,조인선,김광현,노순형 ( W . B . Chun,J . M . Park,C . Yoon,I . S . Cho,K . H . Kim,S . H . Ro ) 한국축산학회 1985 한국축산학회지 Vol.27 No.8
The crude protein content of Korean native reed was highest in the initial stage, decreased gradually as the growth progressed. Crude fiber content decreased in a manner opposite to that of crude protein. Dry matter digestibility determined by in vitro method was highest during May and decreased gradually as the growing stage progressed. The contents of mineral elements and amino acid show a low level. There was a significant positive correlation (p$lt;0.05) between in vitro dry matter digestibility and the content of crude protein, and was a significant negative correlation (p$lt;0.05) between in vitro dry matter digestibility and the content of crude fiber or that of ADF.
정착후 질소시비가 Orchardgrass 의 건물중 , 탄수화물 , 질산태질소 및 조단백질 함량에 미치는 영향
전우복,김동암 ( Woo Bock Chun,Dong Am Kim ) 한국축산학회 1981 한국축산학회지 Vol.23 No.2
This experiment was carried out to evaluate the effect of nitrogen fertilization on the rate of growth, and the changes of carbohydrate, nitrate-nitrogen and crude protein content contained in the samples after seedling establishment of orchardgrass. Plants were grown in the pots fertilized light and increasing nitrogen, till dune 13, 1979 after sowing on the, April 12, 1979. The result, obtained were a, follow; 1. Dry matter yield in the pots fertilized increasing nitrogen way more than that in light nitrogen with aging. The liberal use of nitrogen fertilizers after seedling establishment stimulated the growth of orchardgrass in the early growing stage. 2. The convent of total water-soluble carbohydrate, (T. S. C) m stubble, leaves and shoots temporally decreased following nitrogen fertilization after seedling establishment, after which it again increased, and that of plant parts in the pots fertilized increasing nitrogen decreased more than that of plant part; in light nitrogen. 3. Stubble were higher in the content of total water-soluble carbohydrates (T. S. C.) than leaves, and the content of total water-soluble carbohydrate, (T. S. C.) of plant party decreased by tillering. 4. Nitrate-nitrogen content decreased following nitrogen fertilization and gradually increased, however, it was shown again trend, decreased at the end of experiment. Crude protein content rapidly increased immediately following nitrogen fertilization, however, it gradually decreased.
전우복,김동암 ( Woo Bock Chun,Dong Am Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.3
The experiment was carried out to evaluate the effect of top-dressing before and after cutting on the rate of regrowth and the changes of carbohydrate, nitrate and crude protein contained in the samples after cutting of Orchardgrass. Plants were grown in the fields from April 8 to July 12, 1979 The result obtained were as follows. 1. The increase of dry matter was delayed by the cutting, but in the latter term of growth the increasing rate of dry matter in cut shoots was higher than that in uncut shoots. 2. Cutting resulted in a temporary decrease of total water-soluble carbohydrate (T. S. C.) and nitrate content in the shoots while the crude protein content tended to increase temporally. Similar trends were observed when the plants were left intact with top-dressing. 3. The period of recovery to initial stands after cutting about 4 - 5 weeks was in terms of dry matter and total water-soluble carbohydrates. 4. The top-dressing applied simultaneously with the cutting was more effective to stimulate regrowth than that applied after cutting, however, both of the simultaneous and after cutting application were still better than application prior to cutting.
金容植,全宇福 全南大學校 農漁村開發硏究所 1975 農業科學技術硏究 Vol.9 No.-
韓牛의 去來頭數와 價格構造의 特性을 究明코자 本 調査를 實施하였는데 그 結果는 다음과 같다. 1. 韓牛는 靑草期부터 枯草期까지 그 去來가 旺盛하였는데 成牛의 去來頭數는 農繁期耕耘과 關係가 깊었으나 1歲牛와 2歲牛의 去來頭數는 農繁期耕耘과 關係가 적었다. 2. 韓牛의 價格變動率은 高齡層보다 低齡層이 더 높았는데 이는 韓牛의 飼育目的이 役用으로부터 肉用으로 轉換된 데 起因하는 것 같다. 3. 韓牛價格의 季節別 振幅이 크므로 價格變動에 依한 經濟的 損失을 防止하고 有利하게 服賣하기 爲해서는 6月頃이나 9月頃 또는 年末의 價格頂点期 服賣를 爲한 計劃的인 韓牛飼育이 必要하였다. 따라서 重量法에 依한 韓牛의 去來方法 改善과 畜産物流通構造의 改善이 要請된다. 4. 숫송아지와 숫소2歲牛의 去來頭數와 價格과의 關係는 正의 相關이므로 그 價格은 需要에 依하여 影響을 받고 있었다. 그러나 成牡牛와 牝牛는 모두 負의 相關이므로 그 價格은 供給에 依하여 影響을 받고 있었다. 5. 韓牛의 年齡別 平均價格에서 볼 때 1歲牛를 飼育하여 2歲에서 服賣하는 것이 經濟的으로 有利하다고 判斷된다. 그러나 1歲牛의 自給的 供給을 爲해서는 송아지 生産을 爲한 成牝牛의 育成이 要請된다. This experiment was conductied to study the characteristic and the movable element of the heads and the prices of Korean cattle dealt in the market channel. 1. The raising Korean cattle mostly was dealt with between green grass period and drain grass period. The dealt heads of grown ups Korean cattle were much concerned with the busy farming season, but that of 1 year and 2 year old Korean cattle were little concerned with the busy farming season. 2. The movable rate on the dealt prices of the youth Korean cattle was higher than that of the age Korean cattle. This result seems to come to convert the working cattle to the beef cattle. 3. Calculated from the fact that the seasonal amplitude of price variation of Korean cattle market was high, it is recommended that the farms raise them under a plan in which they can prevent the economical loss by selling the cattle at the summit prices of June season, September season or the year-end season. Consequently it is demanded that the dealt system will be reformed for weight and the current organization of livestocks' goods will be reformed. 4. On the 1 year and 2 year old Korean male cattle, the positive correlation was between the heads and the prices of Korean cattle dealt in market channel, and the price was affected by the demand. But, on the grown-ups Korean male cattle and all Korean female cattle, the negative correlation was between the heads and the prices of Korean cattle dealt in market channel, and the price was affected by the supply. 5. On the mean price of Korean cattle by year old, it turned out to be profitable that the farmsteads raise 1 year old calves and sell them out at the age of 2 years. But, to maintain self-sufficient supply of calves, the breeding cows must be secured as the precondition to the production of the planned number of 1 year old calves.
예취 및 질소시비가 Orchardgrass 그루터기의 수용성탄수화물함량의 계절변화에 미치는 영향
전우복,김동암,윤창,손문호,서석봉,김동후 ( W . B . Chun,D . A . Kim,C . Yoon,M . H . Son,S . B . Seo,D . H . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.8
The total water-soluble carbohydrates (TSC) in orchardgrass stubble accumulated during the period of cool season; and declined when the weather was hot and dry. During the period of cool season, the reserve level decreased when a new leaf emerged after the start of plant growth and then increased rapidly, however, decreased after seed ripening. Levels of carbohydrate content decreased sharply following the top-dressing applied simultaneously with the cutting. When the top-dressing was followed by the period of hot dry weather, carbohydrate reserves were often reduced to critical levels. In such weather conditions, the top-dressing on orchardgrass should be restricted.