Search results for "genetic-parameters"

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Effect of somatic cell count level on functional longevity in Valle del Belice dairy sheep assessed using survival analysis.

2009

The objectives of this study were to evaluate the effect of somatic cell count (SCC) on functional longevity and to estimate the heritability of functional longevity using survival analysis in Valle del Belice dairy sheep. A total of 4,880 lactations of 2,190 ewes from 11 flocks were used. In this study, SCC was considered as an indication of subclinical mastitis. In case of clinical cases, identified by the technicians at milking time, test-day weights and milk samples of those ewes were not considered. Somatic cells were analyzed as counts, without any transformation, and were grouped in 3 classes based on the observed SCC maximum (mxSCC). The mxSCC classes, expressed as 103 cells/mL, wer…

Veterinary medicinemedia_common.quotation_subjectLongevityselectionCell CountMastitisAnimal Breeding and GenomicsBiologygenetic-parametersModels BiologicalMilkingSettore AGR/17 - Zootecnica Generale E Miglioramento GeneticocowsAnimal scienceQuantitative Trait Heritabletraitsproductive lifeLactationsomatic cell count longevity survival analysis dairy sheepGeneticsmedicinescoreAnimalsFokkerij en Genomicasubclinical mastitisSurvival analysismedia_commonmilkSheepLongevityHeritabilitymedicine.diseaseSurvival AnalysisMastitisDairyingmedicine.anatomical_structureMilkcattleWIASholsteinAnimal Science and ZoologyFemaleFlockSomatic cell countFood ScienceJournal of dairy science
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