Impact of Age at Calving on Lactation, Reproduction, Health, and Income in First-Parity Holsteins on Commercial Farms

Author:

Ettema J.F.,Santos J.E.P.

Publisher

American Dairy Science Association

Subject

Genetics,Animal Science and Zoology,Food Science

Reference33 articles.

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2. Logistic regression using the SAS system: Theory and application;Allison,1999

3. Interrelationships between energy balance and postpartum reproductive function in dairy cattle;Butler;J. Dairy Sci.,1989

4. Effect of body weight and age at calving on milk production in Holstein cattle;Clark;J. Dairy Sci.,1962

5. Factors associated with first service conception in artificially inseminated nulliparous Holstein heifers;Donovan;Theriogenology,2003

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