The experiment used 10316 Dairy Herd Improvement(DHI)records to analyze the impact of parities and days in milk(DIM)on Milk Urea Nitrogen(MUN), and the relationship between MUN and milk composition.
本试验共收集10316条DHI记录并分析了奶牛胎次和泌乳天数对牛奶尿素氮（MUN）含量的影响以及MUN值与产奶量和乳成分的关系。
The experiment used 10316 Dairy Herd Improvement(DHI)records to analyze the impact of parities and days in milk(DIM)on Milk Urea Nitrogen(MUN), and the relationship between MUN and milk composition.
本试验共收集10316条DHI记录并分析了奶牛胎次和泌乳天数对牛奶尿素氮（MUN）含量的影响以及MUN值与产奶量和乳成分的关系。
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