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机译:Development of ruminating behavior in Holstein calves between birth and 30 days of age
Chinese Acad Agr Sci;
Beijing Univ Agr;
Heilongjiang Acad Agr SciJiuXing Dairy Farm;
ruminating behavior; first rumination; performance; behavior of calves; FORAGE PROVISION; FEEDING-BEHAVIOR; RUMEN FERMENTATION; SOLID FEED; LYING TIME; PERFORMANCE; MILK; STARTER; HAY; DIGESTIBILITY;