The effects of a linear increase in dietary indole glucosinolates on growth and physiology of mice

Autor: C. S. Darroch, J. M. Bell, J. H. L. Mills, D. I. McGREGOR
Rok vydání: 1991
Předmět:
Zdroj: Canadian Journal of Animal Science. 71:887-896
ISSN: 1918-1825
0008-3984
DOI: 10.4141/cjas91-104
Popis: An extract of indole glucosinolates (GSLs) isolated from Brussels sprouts (Brassica oleracea) was incorporated into semipurified diets to study the effects of indole GSLs on growth, feed mtake and thyroid, liver and kidney function over a 16-d period. Increasing levels (0.2–8.2 μmol g−1 DM) of dietary indole GSLs, primarily indolyl-3-methyl-GSL, decreased feed intakes of mice linearly (P −1 DM) of indole GSLs but mice adapted to their presence and this was reflected by compensatory growth. Feed intakes of mice fed diets containing 8.2 μmol indole GSLs g−1 DM were lowered dramatically which resulted in an increase in mortality. Mortality may have resulted from a toxic effect of indolyl-3-methyl-GSL or indoleacetonitrile but was most likely a result of starvation. Indole GSLs from the extract were not goitrogenic and had no apparent effect on thyroid, hepatic or renal weights or morphology. It was concluded that dietary indole GSLs, primarily indolyl-3-methyl-GSL, below 3 μmole g−1 DM did not adversely affect growth performance in mice and may have contributed to a small improvement in feed efficiency. Key words: Indole glucosinolates, growth, feeding value, mice
Databáze: OpenAIRE