Economic Value of Days Open for Holstein Cows of Alternative Milk Yields with Varying Calving Intervals

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Genetic Relationship between Milk Yields, Calving Ease and Days Open at First Lactation of Holstein Cows in Korea

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Genetic Relationship between Milk Production, Calving Ease and Days Open at First Parity in Holstein Cows

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Estimation of Genetic and Phonotypic Trends for Age at First Calving, Calving Interval, Days Open and Number of Insemination to Conception for Isfahan Holstein Cows

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ژورنال

عنوان ژورنال: Journal of Dairy Science

سال: 1984

ISSN: 0022-0302

DOI: 10.3168/jds.s0022-0302(84)81349-1