Plant protein‐based diets are widely used for common carp (Cyprinus carpio var. Jian). The plant source antagonist, such as phytate, negatively affects the bioavailability of trace minerals, but this aspect was not considered in previous studies on this species. A 10‐week growth trial was conducted to investigate the effects of inorganic Zinc (ZnSO₄·7H₂O, Zn‐S) and organic Zn (2‐hydroxy‐4‐(methylthio) butanoic Zinc, Zn‐M) on growth performance, Zn retention and antioxidant responses of common carp (initial weight 10.0 ± 0.03 g). Eleven semi‐purified diets containing 7 mg/kg phytic acid were prepared with 0, 5, 20, 35, 50 and 65 mg/kg Zn from Zn‐S and Zn‐M (12.8 mg/kg Zn in basal level), respectively. The results showed that either Zn‐S or Zn‐M inclusion improved growth performance, vertebral Zn deposition and antioxidant responses of fish. The Zn requirement based on WGR, vertebrae Zn and plasma SOD were 47.0, >77.8 and 48.5 mg/kg, and 63.3, 42.2 and 36.8 mg/kg, respectively, with Zn‐S and Zn‐M as Zn sources. The relative bioavailability of Zn‐M was 2.44‐ (vertebrae Zn deposition) and 1.74‐fold (plasma SOD activity) the availability of Zn‐S in the diet of common carp. The lower growth performance and poor bioavailability in vertebrae of Zn‐S group were related to the chelating of zinc with phytic acid.

中文翻译：

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日粮锌源和水平对饲喂含植酸日粮的鲤鱼幼鱼（Cyprinus carpio var.Jian）生长性能、组织锌保留和抗氧化反应的影响

以植物蛋白为基础的饲料被广泛用于鲤鱼（Cyprinus carpio var.Jian）。植物源拮抗剂，如植酸盐，会对微量矿物质的生物利用度产生负面影响，但之前对该物种的研究并未考虑到这一方面。进行了为期 10 周的生长试验，以研究无机锌（ZnSO₄·7H2O，Zn-S）和有机锌（2-羟基-4-（甲硫基）丁酸锌，Zn-M）对生长性能和锌保留的影响和鲤鱼的抗氧化反应（初始重量 10.0 ± 0.03 克）。分别用 0、5、20、35、50 和 65 mg/kg Zn-S 和 Zn-M（基础水平 12.8 mg/kg Zn）制备了 11 种含有 7 mg/kg 植酸的半纯化日粮. 结果表明，Zn-S 或 Zn-M 夹杂物提高了鱼类的生长性能、脊椎锌沉积和抗氧化反应。基于 WGR、椎骨 Zn 和血浆 SOD 的 Zn 需求量分别为 47.0、>77.8 和 48.5 mg/kg，以及 63.3、42.2 和 36.8 mg/kg，Zn-S 和 Zn-M 作为锌源。Zn-M 的相对生物利用度是鲤鱼饲料中 Zn-S 的 2.44-（椎骨锌沉积）和 1.74 倍（血浆 SOD 活性）。Zn-S组椎骨生长性能低下和生物利用度差与锌与植酸螯合有关。