Effects of diet quality on phenotypic flexibility of organ size and digestive function in Mongolian gerbils (Meriones unguiculatus)
Effects of diet quality on phenotypic flexibility of organ size and digestive function in Mongolian gerbils (Meriones unguiculatus)
复制标题
饲料质量对沙鼠器官大小表型灵活性和消化功能的影响
DOI:
10.1007/s00360-007-0149-4
复制
发表时间:
2007-03
期刊:
影响因子:
--
通讯作者:
中科院分区:
文献类型:
--
作者:
In the context of evolution and ecology, there is a trade-off between the benefits of processing food through a digestive system with specific phenotypic attributes and the cost of maintaining and carrying the digestive system. In this study, we tested the hypothesis that digestive modulations at several levels can match each other to meet the energy and nutrient demands of Mongolian gerbils, a small granivorous rodent species, by acclimating them to a high-quality diet diluted with alfalfa powder. Mongolian gerbils on the diluted diet maintained metabolizable energy intake by an integrated processing response (IPR), which included increases in dry matter intake, gut capacity and rate of digesta passage after 2-weeks of acclimation. Down-regulation of hydrolytic enzyme activity in the intestinal brush-border membrane supported the adaptive modulation hypothesis. The absence of up-modulation of summed enzyme hydrolytic capacity on the diluted diet indicated that greater mass of small intestine on a high-fibre diet is not a direct indicator of digestive or absorptive capacity. Changes in mass of vital organs and carcass suggested that the amount of energy allocated to various organs and hence physiological functions was regulated in response to diet shift.
登录
查看更多内容
DOI:
10.1086/639580
发表时间:
1997-03
期刊:
Physiological Zoology
影响因子:
--
作者:
D. Afik;B. W. Darken;W. Karasov
通讯作者:
D. Afik;B. W. Darken;W. Karasov
DOI:
--
发表时间:
1992
期刊:
--
影响因子:
--
作者:
T. Tomasi;T. Horton
通讯作者:
T. Tomasi;T. Horton
DOI:
10.1007/978-1-4613-0425-8
发表时间:
1996
期刊:
Respiration physiology
影响因子:
--
作者:
C. Carey
通讯作者:
C. Carey
影响因子:
1.6
作者:
Yan-Xin Pei;Dehua Wang;I. Hume
通讯作者:
Yan-Xin Pei;Dehua Wang;I. Hume
DOI:
10.1086/physzool.66.3.30163700
发表时间:
1993-05-01
期刊:
PHYSIOLOGICAL ZOOLOGY
影响因子:
--
作者:
HUME, ID;MORGAN, KR;KENAGY, GJ
通讯作者:
KENAGY, GJ