頁籤選單縮合
題 名 | Maintenance of a Profound Pure Strain of Sprague-Dawley Rats: between the 40∼42 Generations |
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作 者 | 居小燕; 畢萬邦; 張錫勳; 曾淑華; | 書刊名 | An Asia Seasonly Report of Environmental Microbiology in the Republic of China |
卷 期 | 8 2000.07[民89.07] |
頁 次 | 頁43-49 |
分類號 | 415.121 |
關鍵詞 | Generations; Pure strain; Sprague-dawley rats; |
語 文 | 英文(English) |
英文摘要 | Upon the maintenance of a pure strain of Sprague-Dawley (S-D) rat colony since 1985, in these 13∼14 years, there were only two instances, of which, S-D rats from other colonies had been introduced into this colony of one pair single source rats group. These two instances took place at the generation 38 and generation 42 mainly because of lactation failure in generation 38 and parental behaviour disorder of generation 41~42. Under such behaviour disorder of parental rats. weanling rats of 2~3 weeks did not survive beyond the neonatal period, while the temperature, food supply and water offering were acceptable, per se, water with boiled-booling process instead of top water are given to prevent waterborn viral infection. During this period, hard labor of female rat and excessive loss of aging rats have been encountered to threaten the population of the entire rat colony. With 10 S-D rats of 10 weeks old joining the colony and live together with males including generation 42 of the original colony, more neonatals are seen and the total number of the colony increased and the average age of S-D rats in the colony decreased for the lime being. It is amazing to see that such situation resembles those countries encountered high age society inside their own countries and the young generation began to have wife from foreign countries and have nowborns to secure the entire population from unblanced old-and-young piopoilioiis. Human beings can not expect that primate or superhuman from outer space to secure human race, or do we? |
本系統中英文摘要資訊取自各篇刊載內容。