Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 2 of 2 for “"somatic cell scores"”.
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Impact of sire PTA<SUB>SCS</SUB> on mastitis resistance and measures of daughter performance
Research to determine the impact of PTA<SUB>SCS</SUB> on incidence of mastitis, daughter response to infection, and other measures of daughter performance was conducted using data on 1st, 2nd, and 3rd lactation Holsteins obtained from the Virginia Tech herd and from VA DHI herds. Overall …
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Genetic Parameters for Udder and Teat. Type Traits in Icelandic Cattle Breed
… teats for Icelandic Cattle. Udder and teat type scores of 76,628 Icelandic Cattle were used for the study’s analyses. Variance components were estimated by linear bivariate animal models. Icelandic Cattle’s current genetic model was compared to four alternative models, differing in fixed and …