PDF(Pubmed)
Abstract：
Little is known about the animal- and diet-related factors that could interfere with the plasma zinc (Zn) concentrations of equines. Additionally, the adequacy of plasma to reflect changes in the Zn intake is unclear. In the first part of this study, the plasma Zn concentrations of hospitalized horses and ponies (n = 538) were measured and evaluated for the impact of the age, sex, horse type, and internal diseases of the animals. In the second part, the effects of increasing dietary Zn chloride hydroxide and Zn methionine supplementations were assessed on the plasma and mane hair Zn concentrations of healthy horses (n = 2) and ponies (n = 8). Part 1: The age, sex, and horse type did not influence the plasma Zn concentrations. No effect of internal diseases was observed, with the exception of higher plasma Zn concentrations in animals with metabolic disorders compared to the control group (p < 0.05). Part 2: Both Zn supplements dose-dependently increased the Zn concentrations in the mane hair (p = 0.003), but not in the plasma of the horses and ponies. In conclusion, the plasma Zn concentrations were widely unaffected by nutritional and non-nutritional factors in equines, while mane hair samples better reflected the dietary Zn supply.
摘要：
关于可能干扰马血浆锌（Zn）浓度的动物和饮食相关因素知之甚少。此外,血浆是否足以反映锌摄入量的变化尚不清楚。在本研究的第一部分,测量住院马和小马（n=538）的血浆锌浓度，并评估年龄的影响，性别,马类型,和动物的内部疾病。在第二部分,评估了增加饮食中氯化锌氢氧化物和蛋氨酸锌的补充对健康马（n=2）和小马（n=8）的血浆和鬃毛锌浓度的影响。第一部分：年龄，性别,和马类型不影响血浆锌浓度。没有观察到内部疾病的影响，代谢紊乱动物的血浆锌浓度高于对照组(p<0.05)。第2部分：两种锌补充剂都剂量依赖性地增加了鬃毛中的锌浓度（p=0.003），但不是在马和小马的血浆中。总之,马的血浆锌浓度广泛不受营养和非营养因素的影响，而鬃毛样本更好地反映了膳食锌的供应。
