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Showing 1 to 4 of 4 for “"Somatic Cell Score"”.
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Topics on animal model evaluations with an application to somatic cell score in dairy cattle
A block-band system of mixed model equations was proposed for the animal model with multiple genetic factors. The block-band system places non-zero submatrices of the coefficient matrix on the diagonal band, and has only two non-zero submatrices on the right hand side of the mixed model equations. …
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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 …
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Mælidagalíkan fyrir íslenska kúastofninn
… (MY), fat yield (FY), protein yield (PY) and somatic cell score (SCS) in first three lactations with a RR model based on Legendre polynomials. For comparison 305 day lactation yields (LAC1) were calculated from the same data and genetic parameters estimated with a multitrait model. Parameters …
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Nutritional and genetic characterization of dairy cows managed on pasture-based systems, identifying key aspects to improve their performance
… while body weight and body condition score predictions were improved after model modifications and reparameterization. Although digestion of nutrient was better represented by the new set of parameters derived, the accuracies of milk, protein, and fat production remained low (CCC of …