Article
Effect of Holstein genotype on immune response to an intramammary Escherichia coli challenge.
Journal of dairy science - 1 Jun 2022
Lippolis John D, Putz Ellie J, Reinhardt Timothy A, Casas Eduardo, Weber Wanda J, Crooker Brian A
Abstract excerpt
Selective breeding of US dairy cows since the mid-1960s has contributed to remarkable gains in milk yield per cow. This increased milk yield has been associated with an increase in health issues. Since 1964, the University of Minnesota has selectively bred a Holstein herd to maintain genetically static, unselected Holsteins (UH). Comparison of these UH cows with contemporary Holsteins (CH) has demonstrated that...
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