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이병오 경상대학교 축산진흥연구소 1985 畜産振興硏究所報 Vol.12 No.1
To analyze the change for body weight and body type of high-grade Korean Cattles raised around. the Gyeong Nam distrcit and to get the index for improvement, 85 heads of bull, 83 heads of prospective bull and 70 heads of cow that were presented for 5 years lately to the Livestock show in Gyeong Nam were investigated. 1. Body weight, withers height, body length, chest width, hip width, thurl width, pinebone width. and chest girth of Korean native bulls presented to the Livestock show were on an average 638.8kg, 136.2cm, 161.1cm, 49.0cm, 48.5cm, 45.6cm 26.5cm and 204.3cm, respectively. 2. Body weight, withers height, body length, chest width, hip width, thud width, pinebone width and chest girth of prospective bulls presented to the Livestock show were on an average 433.6kg, 128.8cm, 149.0cm, 43.8cm, 44.1cm, 43.1cm, 24.2cm and 187.7cm respectively. 3. Body weight, withers height, body length, chest width, hip width, thurl width, pinebone width and chest girth of Korean native cows presented to the Livestock show were on an average 449.8kg, 126.4cm, 147.2cm, 42.0cm, 48.1cm, 43.7cm, 26.1cm and 181.9cm, respectively. 4. Though there were no significant differences according to the year of investigation in the characters investigated from the Korean native bulls and cows presented to the Livestock show, all characters were generally improved as the year passed. 5. Though Body weight and body size of bulls and cows presented to the Livestock show were lower than those of bulls and cows presented to the nation Livestock show but were higher than those of tattles investigated by the other surveys.
이병오,문승식 한국축산학회 1969 한국축산학회지 Vol.11 No.3
This experiment was conducted to acertain the effects of sweet-potato silage on productivity of layers using White Leghorn for 8 weeks. The results obtained were as follows. 1. Feeding 20% of sweet-potato silage was the most noticeable than any other lots in egg production. 2. The amount of feed consumed was less in all lots fed sweet-potato silage than control lot, but any difference were not appeared among all lots in laying numbers of eggs. 3. It was acknowledged that all the diets mixed with sweet-potato silage had better economical value than control lot.
李炳旿 東亞大學校 大學院 1984 大學院論文集 Vol.9 No.-
About one third of Korean beef supply is accounted for by the imported beef form Australia. From this point of view, it can be easily expected that Korean beef industry is influenced by Australian beef producing situations directly or indirectly. In order to protect Korean beef producers and consumers from price instabilities derived from disequilibria of beef demand and supply, it is very important to study on the Australian beef industry. The objective of this study is to identify the structural characteristics of beef production and trade in Australia. The results of this study can be summarized as follows : 1. Beef cattle production in Australia is generally part of a mixed farming enterprise in combination with wheat or sheep. This spreads risks from heavy export dependence and frequent droughts. 2. Beef cattle industry has four main production and fattening systems such as Breed Vealers, Breed Fats, Breed Stores, and Fatten Stores. Breed Vealers and Breed Fats constitute about 50 percent of the national herd. 3. In 1981∼82, materials, services, cattle purchases, and hired labor accounted for 36 percent, 21 percent, 17 percent, and 8 percent of the total cash costs per operation, respectively. Farm cash operating surplus of beef-only operations recorded about 11 thousand dollars in this period. 4. There are essentially four ways in which Australian beef producers can dispose of their animals such as Auctions in Saleyards, Paddock Selling, Weight and Grade, and Direct Kill or Consignment Selling. Two thirds of cattle are sold by open auction systems. 5. At the present time Australian feedlots are heavily depended upon Japanese market in grain-fed beef exportation. Average fattening period of Australian feedlots is 3 months. There are two types of feedlots such as seasonal type and permanent type. 6. More than half of Australia's export beef goes to the United States. Other substantial export markets are Japan, Canada, and Korea. Changes in the U.S. beef market thus have a large impact on nearly all Australian beef producers. Recently the Australian beef industry makes an effort to promote export diversification policies.