נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
The effect of diet on microfaunal population and function in the caecum of a subterranean naked mole-rat, Heterocephalus glaber
Year:
1991
Source of publication :
British Journal of Nutrition
Authors :
יהב, שלמה
;
.
Volume :
65
Co-Authors:
Buffenstein, R., Physiology Department, University of the Witwatersrand, Medical School, 7 York Road, Parktown, Johannesburg 2193, South Africa
Yahav, S., Physiology Department, University of the Witwatersrand, Medical School, 7 York Road, Parktown, Johannesburg 2193, South Africa
Facilitators :
From page:
249
To page:
258
(
Total pages:
10
)
Abstract:
The effect of dietary fibre and starch content on digestibility, microfaunal population and caecal function was investigated in a subterranean mole-rat, Heterocephalus glaber (Rodentia). Mole-rats were fed on a diet of either sweet potato (neutral-detergent fibre (NDF) 65 g/kg dry matter (DM), starch 638 g/kg DM) or carrot (NDF 157 g/kg DM, starch 258 7 g/kg DM) for 4 weeks. Daily intake and faecal output were monitored. Thereafter caecal microfaunal population, density and function were assessed using light and scanning electron microscopy and by measuring both gas and short chain fatty acid (SCFA) production. A 2 4-fold increase in fibre and 2–5-fold decrease in starch content resulted in a decrease in caecal DM content (390 g/kg). A concomitant dramatic decline (by 93 %) in ciliate protozoa with a corresponding 2-fold increase in bacteria also accompanied this change in diet. Fermentative efficiency as indicated by gas production was 2–6 times greater on a carrot diet than on sweet potato. Microbial fermentation resulted in higher SCFA concentrations on the carrot diet, with a 42 % reduction in SCFA concentration on the sweet potato diet. Here, SCFA contributed 51 % of daily energy expenditure and this increased 50-fold on the carrot diet. Caecal micro-organism function, therefore, played an important role in the nutritional physiology of these naked mole-rats, and enabled maximum utilization of the food substrate. © 1991, The Nutrition Society. All rights reserved.
Note:
Related Files :
Animal
animal experiment
bacteria
Ciliophora
Ipomoea batatas
Rodentia
Solanum tuberosum
vegetables
עוד תגיות
תוכן קשור
More details
DOI :
10.1079/BJN19910084
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32060
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:07
You may also be interested in
Scientific Publication
The effect of diet on microfaunal population and function in the caecum of a subterranean naked mole-rat, Heterocephalus glaber
65
Buffenstein, R., Physiology Department, University of the Witwatersrand, Medical School, 7 York Road, Parktown, Johannesburg 2193, South Africa
Yahav, S., Physiology Department, University of the Witwatersrand, Medical School, 7 York Road, Parktown, Johannesburg 2193, South Africa
The effect of diet on microfaunal population and function in the caecum of a subterranean naked mole-rat, Heterocephalus glaber
The effect of dietary fibre and starch content on digestibility, microfaunal population and caecal function was investigated in a subterranean mole-rat, Heterocephalus glaber (Rodentia). Mole-rats were fed on a diet of either sweet potato (neutral-detergent fibre (NDF) 65 g/kg dry matter (DM), starch 638 g/kg DM) or carrot (NDF 157 g/kg DM, starch 258 7 g/kg DM) for 4 weeks. Daily intake and faecal output were monitored. Thereafter caecal microfaunal population, density and function were assessed using light and scanning electron microscopy and by measuring both gas and short chain fatty acid (SCFA) production. A 2 4-fold increase in fibre and 2–5-fold decrease in starch content resulted in a decrease in caecal DM content (390 g/kg). A concomitant dramatic decline (by 93 %) in ciliate protozoa with a corresponding 2-fold increase in bacteria also accompanied this change in diet. Fermentative efficiency as indicated by gas production was 2–6 times greater on a carrot diet than on sweet potato. Microbial fermentation resulted in higher SCFA concentrations on the carrot diet, with a 42 % reduction in SCFA concentration on the sweet potato diet. Here, SCFA contributed 51 % of daily energy expenditure and this increased 50-fold on the carrot diet. Caecal micro-organism function, therefore, played an important role in the nutritional physiology of these naked mole-rats, and enabled maximum utilization of the food substrate. © 1991, The Nutrition Society. All rights reserved.
Scientific Publication
You may also be interested in