Bioavailability of zinc from different sources in pigs

In contrast to inorganic Zn, organic Zn sources are absorbed via peptide or AA transport systems resulting in a higher digestibility and availability. Bioavailability of organically bound Zn seems also to be influenced by the type of complex being used. Forty-two gilts (Large white × Landrace) with...

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Veröffentlicht in:Journal of animal science 2012-12, Vol.90 Suppl 4 (suppl_4), p.185-187
Hauptverfasser: Nitrayova, S, Windisch, W, von Heimendahl, E, Müller, A, Bartelt, J
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container_issue suppl_4
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container_title Journal of animal science
container_volume 90 Suppl 4
creator Nitrayova, S
Windisch, W
von Heimendahl, E
Müller, A
Bartelt, J
description In contrast to inorganic Zn, organic Zn sources are absorbed via peptide or AA transport systems resulting in a higher digestibility and availability. Bioavailability of organically bound Zn seems also to be influenced by the type of complex being used. Forty-two gilts (Large white × Landrace) with initial BW of 24 ± 1.4 kg were allotted to 6 treatments of 7 pigs each. Pigs were fed diets based on corn (Zea mays), barley (Hordeum vulgare), and soybean (Glycine max) meal containing either low or high Zn supplementation with ZnO, Zn-Met 1:2 complex, Zn-Gly, Zn proteinate (Zn-Prot), or Zn-yeast. Diets were fed during a 10-d adaptation followed by a 4-d quantitative collection. Daily feed allowance was restricted to 1400 g/pig. Pigs were weighed at the start and end of adaptation and collection and feed consumption was monitored daily. Dietary Zn addition was 10 and 100 mg/kg feed for ZnO and 10 mg/kg feed for other Zn sources. Corresponding ADG ranged from 437 to 587 g with the lowest (P < 0.05) ADG for 10 ppm ZnO. Only Zn-Met addition increased (P < 0.02) Zn digestibility and retention (P < 0.05). Organically bound Zn, in particular Zn from Zn-Met 1:2 and Zn-yeast, can replace higher dosages of ZnO due to better bioavailability indicating that type of chelate is important for Zn retention. Organically bound Zn may reduce Zn excretion, which consequently may lower the environmental impact.
doi_str_mv 10.2527/jas.53895
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Organically bound Zn, in particular Zn from Zn-Met 1:2 and Zn-yeast, can replace higher dosages of ZnO due to better bioavailability indicating that type of chelate is important for Zn retention. Organically bound Zn may reduce Zn excretion, which consequently may lower the environmental impact.</abstract><cop>United States</cop><pub>Oxford University Press</pub><pmid>23365324</pmid><doi>10.2527/jas.53895</doi><tpages>3</tpages></addata></record>
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subjects Animal Feed - analysis
Animal Nutritional Physiological Phenomena
Animals
Biological Availability
Diet - veterinary
Feeds
Female
Hogs
Swine - blood
Swine - physiology
Zinc
Zinc - administration & dosage
Zinc - blood
Zinc - metabolism
Zinc - pharmacokinetics
title Bioavailability of zinc from different sources in pigs
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