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 16 of 16 for “"pedigree information"”.
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Accuracy of predicting genetic merit of A.I. sampled bulls for final score from pedigree information
… PTAT and DTD from different sources of pedigree information obtained before the bull had daughter information. Pedigree sources used were PA, PI, PTAT<sub>SIRE</sub>, and PTAT<sub>DAM</sub>. Simple linear regression was used to determine which pedigree source predicted PTAT or DTD with …
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Accuracy of predicting genetic merit of A.I. sampled bulls from pedigree information and the impact of son's proof on dam's PTA
… predicting DYD and PTA from different sources of pedigree information obtained before the bull had daughter information. Traits evaluated were milk, fat and protein. Pedigree sources considered were PA, PI, PTA<sub>SIRE</sub> and PTA<sub>DAM</sub>. Approximate weighted regression was used to …
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Genetic variation within the Icelandic goat breed: assessment using population data and DNA analysis
… goat population is estimated on the base of both pedigree information and DNA analysis. The estimate is based on three approaches. Firstly, pedigree information is used to calculate the rate of inbreeding, pedigree completeness, generation interval, effective population size, highest contributing …
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Variance Components of litter size in Icelandic farmed mink (Neovison vison)
An analysis of variance components and a study of pedigree structure was carried out using Icelandic field data. Data from six farms was included, total of 88°928 animals in the pedigree. Two methods were employed, MCMC Gibbs sampler method and REML. The two different methods gave similar results. …
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Evaluation of microsatellite markers for parentage verification in South Africa Angora goats
… of a high quality clip. Accurate and complete pedigree information is a prerequisite for accurate selection and estimation of breeding values that in turn can improve the traits associated with fleece quality and yield. South African Angora goats are farmed under extensive breeding conditions …
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Investigation of the genetic components of maternal infanticide in Sus Scrofa
… of Origin (PO) test. The FBAT approach uses pedigree information to test for association in the presence of linkage and the PO approach tests for preferential transmission of allele from one parent (this study focused on maternal transmission). The results from the tests, along with previous …
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A genome-wide association study of resistance to the yellow rust pathogen (Puccinia striiformis f. sp. tritici) in elite UK wheat germplasm
… relatedness between lines, which is confirmed by pedigree information. Historical evaluations against the yellow rust pathogen (Puccinia striiformis f.sp. tritici (Pst)) carried in the United Kingdom between 1990 and 2009, as well as de novo evaluations against recent Pst races have been collected …
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Microevolutionary processes in natural populations of the waterstrider Aquarius remigis
… (1999) method of "estimation in the absence of pedigree information" does not provide useful field estimates in this study, and the use of polymorphic genetic markers to improve these estimates remains untested. I use multiple regression to estimate fitness functions for total length and …
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Improving pedigree prediction, sire, and cow evaluation by adjusting production data for past reproductive performance
… and 0.72 for fat of the bottom 20 dams;Adjusting pedigree information for past reproductive performance improved the regression coefficients for sires and maternal grandsires in predicting young bulls' proofs. However, the regression coefficients for dams were very small (0.02 to 0.03) with or …
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Diachonic DNA Analyses of Animal Breeds and Populations
… for which both phenotypic and correct genotypic information were known from pedigree information in the General Stud Book. The SNaPshot™ protocol was found to provide accurate genotypic information in all cases. Finally, as a proof of method, I compared the diachronic information provided by the …
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Identification of genomic factors using family-based association studies
… a multi-locus method that does not consider pedigree information, also compared with TDT, FBAT, and ROADTRIPS that are single-locus methods considering sample structure. In our simulation studies, GEE-POCRE demonstrates good performance in terms of protecting against spurious associations …
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Molecular genetic analysis of host resistance to soybean mosaic virus
… marker haplotypes agrees with available pedigree information. A set of differential cultivars known to contain Rsv1 clustered into putative Rsv1- carrying groups. Based on molecular marker analysis and previous inheritance studies, 37 of the 45 resistance accessions probably derive their …
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Using DNA markers to trace pedigrees and population substructure and identify associations between major histocompatibility regions and disease resistance in rainbow trout (Oncorhynchus mykiss)
… a model-based cluster analysis and available pedigree information. These approaches for detecting population substructure and admixture portions within individuals are particularly useful for new breeding programs where the founders' relatedness is unknown. The 2005 NCCCWA brood-year (75 …
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Optimizing GWS and GWAS in crop breeding
… with the decreasing cost per sample, the information obtained at the molecular level has been increasingly used in genetic analyses to accelerate the effective selection of clones, through genomic prediction (GP). GP leads to more accurate predictions of the individual’s merit for the …
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New Score Tests for Genetic Linkage Analysis in a Likelihood Framework
… type I error rates, with data consisting of a pedigree with multiple ARPs.</p><p>The goal of this dissertation is to address these issues, and several steps of work are done. First, a web-based tool that pipelines the informatics process for pedigree data is developed. Given pedigree data, it …
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Nutritional and genetic characterization of dairy cows managed on pasture-based systems, identifying key aspects to improve their performance
… (Lolium perenne) at vegetative stage, generating information to improve the ration formulation in dairy cows in pasture-based systems. From the literature revision in objective 1, different factors that could help to create a more specific classification of dairy pasture-based systems were …