The aim of the study was to determine the effect of parity and the stage of lactation on the metabolic profile of cows based on the basic chemical milk components and the blood parameters.

中文翻译：

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代谢概况取决于高性能荷斯坦奶牛的泌乳水平和泌乳阶段。

该研究的目的是根据基本的化学牛奶成分和血液参数，确定胎次和泌乳阶段对奶牛代谢谱的影响。