Use of total dietary fiber across four lemur species (Propithecus verreauxi coquereli, Hapalemur griseus griseus, Varecia variegata, and Eulemur fulvus):: Does fiber type affect digestive efficiency?
Use of total dietary fiber across four lemur species (Propithecus verreauxi coquereli, Hapalemur griseus griseus, Varecia variegata, and Eulemur fulvus):: Does fiber type affect digestive efficiency?
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DOI：
10.1002/ajp.20081
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发表时间：
2004-11-01
影响因子：
2.4
通讯作者：
Eisemann, JH
中科院分区：
文献类型：
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作者：
Campbell, JL;Williams, CV;Eisemann, JH
对胃肠道形态和生理学初步数据不同的四种狐猴物种的两种实验饮食的体内消化率和转运进行了比较：Varecia variegate (VV)、Eulemur fulvus (EF)、Propithecus verreauxi (PV) 和 Hapalemur griseus (HG)。由于散养群体消耗不同量的缓慢发酵的不溶性纤维（IF）和快速发酵的可溶性纤维（SF），消化率的差异可能与消耗的纤维类型的变化有关。为了研究这一点，设计了两种饮食，以提供 28% 的干物质 (DM) 作为总膳食纤维 (TDF)。不同饮食中 IF/SF 的比例 (g/g) 不同（IF 饮食为 12.15:1，IF/SF 饮食为 3.76:1）。两种日粮的干物质消化率 (DMD) 因物种而异：EF 和 VV 的 DMD 较低（约 56-58%），PV（72%）和 HG（76%）的 DMD 较高。纤维消化率结果如下：VV 和 EF 的 TDF 消化率相似（23% 和 28%），PV 较高（56%），HG 最高（66%）。 VV 和 EF 的 IF 消化率较低（20% 和 28%），PV 和 HG 的消化率较高（53% 和 62%）。 Cr 和 Co 两种标记物的通过时间 (TT) 相似（VV 和 EF 约为 3.5 小时，PV 约为 25 小时，HG 约为 30 小时）。平均保留时间 (MRT) 显示出相同的趋势。这些圈养群体的结果表明，消化效率存在很大差异，这可能与自由放养饮食中不同的纤维成分以及消化物在肠道中保留的时间有关。 (C) 2004 Wiley-Liss, Inc.
In vivo digestibility and transit of two experimental diets were compared across four lemur species for which gastrointestinal morphology and preliminary data on physiology differ: Varecia variegate (VV), Eulemur fulvus (EF), Propithecus verreauxi (PV), and Hapalemur griseus (HG). Since free-ranging groups consume varied amounts of slowly fermentable insoluble fiber (IF) and rapidly fermentable soluble fiber (SF), differences in digestibility may be related to variation in the fiber types consumed. To investigate this, two diets were designed to provide 28% of dry matter (DM) as total dietary fiber (TDF). The ratio of IF/SF (g/g) differed across the diets (12.15:1 for the IF diet, and 3.76:1 for the IF/SF diet). The DM digestibility (DMD) of both diets differed across species: DMD was lower for EF and VV (approximately 56-58%), and higher for PV (72%) and HG (76%). The fiber digestibility results were as follows: TDF digestibility was similar for VV and EF (23% and 28%), higher for PV (56%), and highest for HG (66%). IF digestibility was lower for VV and EF (20% and 28%), and higher for PV and HG (53% and 62%). The transit times (TTs) of the two markers Cr and Co were similar (approximately 3.5 hr for VV and EF, 25 hr for PV, and 30 hr for HG). The mean retention times (MRTs) showed the same trend. The results from these captive groups suggest there are large differences in digestive efficiency that are likely related to the varied fiber composition of the free-ranging diet, and the amount of time the digesta are retained in the gut. (C) 2004 Wiley-Liss, Inc.