Forced Resting by High Dietary Zinc: Tissue Zinc Accumulation and Reproductive Organ Weight Changes
نویسندگان
چکیده
منابع مشابه
Regulation of the zinc transporter ZnT-1 by dietary zinc.
The understanding of mechanisms controlling zinc absorption and metabolism at the molecular level has advanced recently. Kinetics of zinc transport have been investigated for many years, but only recently have genes coding for proteins thought to be involved in the transport process been cloned. Four putative zinc transporters, known as ZnT-1 through ZnT-4, have now been described. Among these ...
متن کاملinvestigating behavior changes of laying hens molted by high dietary zinc
introduction the commercial egg industry commonly uses induced molt procedures to rejuvenate flocks for a second or third laying cycle. molting may be induced by feed withdrawal for up to 10 days (7), water withdrawal for 2 days (19), or both, along with a reduction of day length (14). such programs cause concern about animal welfare because it is thought that they may be harmful to hens (28). ...
متن کاملAccumulation and depletion of zinc in chick tissue metallothioneins.
Two experiments were conducted with Hubbard broiler chicks on the metabolism of high levels of dietary zinc. In the first experiment, chicks were fed a basal diet or the basal diet plus 500, 1,000, 2,000 or 4,000 ppm zinc, and in the second experiment chicks were fed the basal diet or the basal diet plus 1,000, 2,000, 4,000, 8,000 or 16,000 ppm zinc, using zinc acetate. Zinc was found to be ass...
متن کاملThe effects of a dietary zinc supplement during lactation on longitudinal changes in maternal zinc status and milk zinc concentrations13
Dietary zinc intakes, selected biochemical indices of zinc status, and milk zinc concentrations were determined at monthly intervals throughout lactation for 53 middle-income lactating women, 14 of whom received a daily supplement of 15 mg zinc. Overall mean dietary zinc intake for the non-supplemented group (NZS) was 10.7 ± 4.1 mg/day ( ± SD). The mean dietary zinc intake of the zinc supplemen...
متن کاملThe Accumulation of Zinc by the Mosquito
The zinc content of mosquitoes in various developmental stages was determined by spectrographic and microchemical analysis and use of zinc(65) and found to be five to ten times higher than other trace elements. Also the concentration of zinc in the mosquito was much greater than in other insects of different biological orders. Over 90 per cent of this element was localized in the Malpighian tub...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1984
ISSN: 0032-5791
DOI: 10.3382/ps.0631207