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首页> 美国卫生研究院文献>Springer Open Choice >Bioavailability of Trace Elements in Beans and Zinc-Biofortified Wheat in Pigs
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Bioavailability of Trace Elements in Beans and Zinc-Biofortified Wheat in Pigs

机译：猪豆和锌强化小麦中微量元素的生物利用度

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The objectives of this experiment were to study bioavailability of trace elements in beans and wheat containing different levels of zinc and to study how the water solubility of trace elements was related to the bioavailability in pigs. Three wheat and two bean types were used: wheat of Danish origin as a control (CtrlW), two Turkish wheat types low (LZnW) and high (HZnW) in zinc, a common bean (Com), and a faba bean (Faba). Two diets were composed by combining 81 % CtrlW and 19 % Com or Faba beans. Solubility was measured as the trace element concentration in the supernatant of feedstuffs, and diets incubated in distilled water at pH 4 and 38°C for 3 h. The bioavailability of zinc and copper of the three wheat types and the two bean-containing diets were evaluated in the pigs by collection of urine and feces for 7 days. The solubility of zinc was 34–63 %, copper 18–42 %, and iron 3–11 %. The zinc apparent digestibility in pigs was similar in the three wheat groups (11–14 %), but was significantly higher in the CtrlW+Faba group (23 %) and negative in the CtrlW+Com group (−30 %). The apparent digestibility of copper was higher in the HZnW (27 %) and CtrlW+Faba (33 %) groups than in the CtrlW (17 %) and LZnW (18 %) groups. The apparent copper digestibility of the CtrlW+Com diet was negative (−7 %). The solubility and digestibility results did not reflect the concentration in feedstuffs. The in vitro results of water solubility showed no relationship to the results of trace mineral bioavailability in pigs.
机译：该实验的目的是研究锌和锌含量不同的豆类和小麦中微量元素的生物利用度，并研究微量元素的水溶性与猪的生物利用度之间的关系。使用了三种小麦和两种豆：丹麦小麦作为对照（CtrlW），两种土耳其小麦的锌含量低（LZnW）和高（HZnW），普通豆（Com）和蚕豆（Faba） 。结合81％CtrlW和19％Com或Faba豆组成两种饮食。测定溶解度为饲料上清液中的微量元素浓度，并将日粮在蒸馏水中于pH 4和38°C孵育3小时。通过收集7天的尿液和粪便，评估了三种小麦和两种含豆日粮中锌和铜的生物利用度。锌的溶解度为34-63％，铜的溶解度为18-42％，铁的溶解度为3-11％。在三个小麦组中，猪的锌表观消化率相似（11–14％），但在CtrlW + Faba组中显着更高（23％），而在CtrlW + Com组中则为负（-30％）。 HZnW（27％）和CtrlW + Faba（33％）组的铜的表观消化率高于CtrlW（17％）和LZnW（18％）组的铜。 CtrlW + Com饮食的表观铜消化率为负（-7％）。溶解度和消化率结果未反映饲料中的浓度。体外水溶性试验结果表明，猪体内微量矿物质的生物利用度与结果无关。

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