期刊
REPRODUCTIVE TOXICOLOGY
卷 27, 期 1, 页码 63-71出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.reprotox.2008.11.056
关键词
Phytoestrogens; Red clover; Avian; Reproduction; Endocrine disruption; Environmental estrogen
资金
- NSF [0314510]
- NIEHS [ES04699]
- NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES [P42ES004699] Funding Source: NIH RePORTER
To determine whether drought-stress alters phytoestrogens in red clover and whether red clover in the diet influences sexual development in Japanese quail, we fed chicks diets containing irrigated or non-irrigated clover. Irrigation altered phytoestrogenic activity of red clover (determined using an in vitro bioassay), with extracts of irrigated clover diet containing more estrogenic activity than extracts of non-irrigated clover diet. Chick growth was negatively correlated with the amount of irrigated or non-irrigated clover in the diet. Dietary red clover also depressed both absolute and relative gonad weights; however, relative oviduct weight was increased by the irrigated diet. Diets did not affect serum vitellogenin. These results reveal a negative influence of drought-stress on phytoestrogenic potency of clover, and that red clover in the diet can inhibit avian growth and development independent of irrigation state. Thus, phytoestrogens may affect reproductive development in wild birds, and environmental stressors may influence levels of phytoestrogens in the field. (C) 2008 Elsevier Inc. All rights reserved.
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