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Subjects dairy herds Remove constraint dairy herds: dairy herds Year 2003 Remove constraint 2003: 2003

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1. A 3-year pilot study of sentinel dairy herds for vesicular stomatitis in El Salvador

Description:: Includes references
Author:: McCluskey, Brian J. , Salman, Mo D. , Martinez, Guillermo E. , Serrano, Adonias O. , Shaw, John L. , Herrerro, Marco V.
Subject:: vesicular stomatitis , sentinel animals , dairy herds , herd health , spatial data , heifers , enzyme-linked immunosorbent assay , serotypes , disease outbreaks , rodents , Vesicular stomatitis New Jersey virus , Vesicular stomatitis Indiana virus , disease prevalence , cattle diseases , El Salvador
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2003

2. Association between bovine-leukosis virus seroprevalence and herd-level productivity on US dairy farms

Description:: Includes references
Author:: Ott, S.L. , Johnson, R. , Wells, S.J.
Subject:: dairy cows , farms , Bovine leukemia virus , seroprevalence , dairy herds , milk production , surveys , economic costs , United States
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2003

3. Mycoplasma in bulk tank milk on U.S. dairy operations

Description:: Includes references
Author:: McCluskey, B.J. , Lombard, J.E. , Hirst, H.
Subject:: bulk milk , bacterial contamination , Mycoplasma , disease prevalence , bovine mastitis , dairy cows , dairies , dairy herds , herd health , disease surveillance , United States
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2003

4. Within-herd effects of age at test day and lactation stage on test-day yields

Description:: Includes references
Author:: Bormann, J. , Wiggans, G.R. , Druet, T. , Gengler, N.
Subject:: dairy cows , dairy herds , animal age , lactation stage , Holstein , Jersey , data analysis , milk yield , milk protein yield , milk fat yield , somatic cell count , lactation curve , breed differences , heritability , statistical analysis , variance , phenotypic variation , prediction , animal genetics , California , Pennsylvania , Wisconsin , Texas
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2003