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Genotype By Environment Interactions For Milk And Fat Production Across Regions Of The United States, M. J. Carabano, K. M. Wade, L. Dale Van Vleck
Genotype By Environment Interactions For Milk And Fat Production Across Regions Of The United States, M. J. Carabano, K. M. Wade, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
(Co)variance components for regional production of milk, fat, and fat percentage were estimated via multiple-trait REML using DHIA data from California, New York, and Wisconsin. Data consisted of registered and grade first lactation yields of Holstein cattle from 1970 through 1984. Records were limited to daughters from sires common to the pairs of states analyzed. Averaged numbers of records from California, New York, and Wisconsin were 419,185, 460,296, and 449,866. Genetic correlations between New York and Wisconsin for milk, fat, and fat percentage (.99, .98, and .99) were larger than those between California and New York (.95, .95, and .98) …