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首页> 外文期刊>Animal Science Journal >Effect of indigestible sugars on nitrogen utilization in adult rabbits
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Effect of indigestible sugars on nitrogen utilization in adult rabbits

机译：难消化的糖对成年兔氮利用的影响

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摘要

To determine the effects of indigestible sugars on the digestibilities of nutrients and utilization of nitrogen (N) in adult male rabbits, 12 rabbits with or without a collar that prevented cecotrophy were fed experimental diets for 8?days, comprising 3?days for adaptation and 5?days for collection of feces and urine. The experimental diets were formulated by adding D-mannitol or citrus pectin to a commercial diet at 60?g/kg. In the rabbits allowed cecotrophy, mannitol increased the absorption of crude ash but did not significantly alter the digestibilities of crude protein (CP), dry matter and acid-detergent fiber. By contrast, the digestibility of CP was decreased by pectin. The ratios of retained N to consumed N and absorbed N were elevated by mannitol. In the rabbits prevented from cecotrophy, mannitol had no effect on N retention, but increased the N content of cecotrophs (soft feces) and the ratio of the N content of cecotrophs to consumed N. Pectin did not have any significant influences on N retention and the N content of cecotrophs. These results suggest that D-mannitol stimulates cecal microbial proliferation, thereby improving N utilization in rabbits.
机译：为了确定难消化的糖对成年雄性兔子营养物质消化率和氮（N）利用率的影响，对12只有或没有项圈防止小肠肥大的兔子进行了实验饮食8天，包括3天的适应和5天收集粪便和尿液。实验饮食是通过将D-甘露醇或柑桔果胶以60？g / kg的量添加到商业饮食中来配制的。在允许cecotrophy的兔子中，甘露醇增加了对粗灰分的吸收，但并未显着改变粗蛋白（CP），干物质和酸性洗涤剂纤维的消化率。相比之下，果胶降低了CP的消化率。甘露醇提高了保留氮与消耗氮和吸收氮的比率。在预防小肠肥大的家兔中，甘露醇对氮的保留没有影响，但增加了小羚羊的氮含量（软粪便），并且小肠菌的氮含量与消耗的氮之比。果胶对氮的保留和生长没有显着影响。盲肠菌的N含量。这些结果表明，D-甘露醇刺激盲肠微生物增殖，从而改善了兔子的氮利用。

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