Nitrogen fixation: a new phenomenon in rodent nutritionстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
Аннотация:A series of experiments was conducted to determine the possible use of nitrogen fixation by small phytophagous mammals to supplement their nitrogen balance. Two groups of red voles, Clethrionomys rutilus were kept on rations with different protein nitrogen content. After 3 days, the rate of nitrogen fixation was determined in different regions of the digestive tract. Nitrogen fixing activity was detected in the digestive tract of all voles, specifically in those regions where symbiotic relations were present; it was particularly high in animals under the conditions of dietary nitrogen limitation. A mixed culture of nitrogen fixing bacteria was isolated from the digestive tract of red voles.