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강인수,강태숙 濟州大學校 農科大學 動物科學硏究所 1995 動物科學論叢 Vol.10 No.1
This study was conducted to analyze the profitability of breeding cow farms in Cheju province. The total samples of 49 farms were included in this survey. 1. The sampled farms were divided into 3 groups, that is, less than 5,6-9 and 10-20 heads accord-ing to their raising sizes, and their number of households in each group were 16, 18 and 15, respectively. The average raising sizes in each group was 4.4, 7.3 and 11.2, respectively, and 8.8 in total. 2. The distributions of the rasing experience from 49 farms were 10.2, 20.4, 10.2, 14.3, and 44.9% for the groups of less than 5, 6-10, 11 - 15, 16-20, and over 21 years, respectively. 3. The utilization area of land per head were 80.2 (2,404 pyung), 101.2 (3,035 pyung) and 39.2a (1,176 pyung) for the group of less than 5 heads, 6 -9 heads and 10-20 heads, respectively. 4. The area of building (barn and attached building) per head were 12.3 (4 pyung), 8.6 (3 pyung), and 9.9㎡ (3 pyung) for the group of less than 5, 6-9, and 10-20 heads, respectively. The average area in total was 9.9㎡ (3 pyung) per head. 5. Only 42 farms possessed their own cutter while all the sampled farms possessed their own power tiller and sprayer. 6. The gross income per head were 1,038,357,985,439 and 1,026,317 won for the group of less than 5, 6-9 and 10-20 heads, respectively. The average gross income was 1.014,Oll won per head. 7. The production costs per head were 848,621, 751,312 and 769,303 won for the group of less than 5, 6-9, 10-20 head, respectively. The average production cost was 777,982 won per head. The opera-tion costs per head were 416,514, 359,753 and 380,280 won for the group of less than 5, 6-9 and 10-20 heads, respectively. The average operation was 379,813 won per head. 8. The net incomes per head were 189,000, 234,000 and 256.000 won for the group of less than 5, 6-9 and 10-20 heads respectively, and ther average were 236,000 won. The ratio of net incomes to gross income per head were 18, 23 and 25% for the group of less than 5, 6-9 and 10-20 heads, respectively, and their average as 23%.
육지한우의 제주지역 적응성 연구 : 1. 육지한우 제주도입시 Theileria sergenti 저항성에 관한 연구
김동철,오운용,김희석,현관종,강영배 濟州大學校 農科大學 動物科學硏究所 1993 動物科學論叢 Vol.8 No.1
This study was conducted to fine the adaptatbility of Korean Native Cattle lacking in the resistance ability to Theileriosis being occured by ticks born parasites in Cheju Island. Data used in this study were collected from none-treated and treated Thpileria sergenti blood vaccine to Korean Native Cattle, Cheju Native Cattle and Cheju Native CattlexBrahman crossbreds during the grazing season in 1988. The parasitemia level of Theileria sergenti in artificial immunized Korean Native Cattle were fewer than none-treated Korean Cattle's, due to immunizing effects. the RBC and PCV reduction were prevented, and average daily gain's 0.25kg in artificial immunized Korean Native Cattle was higher than those of 0.20kg in none-treated. The mortality numbers were one in artificial immunized Korean Native Cattle and four in none-treated Korean Native Cattle. The resistance ability of Theileriosis of Korean Native Cattle was the weakest and Cheju Native Cattle×Brah-man crossbred was the strongest among the breeds.