Intestinal Villus Growth, Enterocyte Migration and Proliferation of the Turkey
نویسنده
چکیده
s of papers 91 yolk (YP), Haugh units (HU), yolk index (YI), shell percent (SP), shell thickness (ST) and egg specific gravity (ESG). The vitamin D influenced the parameters HU, YI, SP, ST, ESG when in thermoneutral temperature, the YI in a cycling heat stress and ST, ESG in constant heat stress. The vitamin C interfered on HU, SP, ST, ESG under thermoneutral temperature and on YI under cycling heat stress. Rectal and dorsal temperatures were not altered by different levels of vitamins D and C. These results indicate that vitamin D (3000 and/or 3500 UI/kg) were effective in improving the eggshell quality under thermoneutral temperature and constant heat stress while the vitamin C (200 and/or 400 ppm) were effective only under thermoneutral temperature. 1Sponsored by FAPESP
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