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.
Results
Showing 1 to 20 of 26 for “"genetic evaluation"”.
-
Genetic evaluation and selection in multibreed populations
… animal production, thus theory and methods for genetic evaluation and selection are required for multibreed populations. This study developed theory for modelling genotypic means and covariances which are required to obtain genetic evaluation by best linear unbiased prediction (BLUP) for …
-
Genetic evaluation of a linear trait description
Data for this study were 79,997 evaluations for 12 individual body and udder traits of Holstein cows. Type scores were subjectively assigned by trained personnel of Select Sires, Inc., Plain City, OH, through their corrective mating and young sire evaluation programs. After editing data to remove …
-
Implications of Connectedness in the Genetic Evaluation of Livestock
The reliability of genetic evaluations across separate management units (e.g. flocks) depends on the extent of genetic links or connections among animals in these units. Where poor connectedness exists, comparisons of estimated breeding values (EBV) across units may be biased. The objectives of …
-
Genetic Evaluation and Parameter Estimation Using Marker and Trait Information
Genetic evaluation by BLUP using marker and trait information requires knowledge of genetic parameters, such as the recombination rate ( r) between a marker locus and a marked QTL. Maximum likelihood methods are widely used to estimate genetic parameters. This thesis presents a new approximation to …
-
Genetic evaluation of cytochrome P450 expression in smoking and nonsmoking women
1. Regiospecific expression of CYP1A1 and CYP1B1 in human uterus of nonsmokers. The goal of this study was to investigate the expression of these isoforms in different regions of the human uterus. Expression was determined in the endometrium, endocervix and squamous (exocervix) regions from six …
-
Investigating Medical Examiners' Practices: Genetic Evaluation For Fatal Acute Aortic Dissection
… thereby conferring an increased risk for TAD. Genetic testing plays a pivotal role not only in diagnosis, but also in risk stratification for relatives and medical management to prevent premature death from dissection. Due to its high fatality rate, medical examiners and coroners (ME/Cs) may be …
-
Development of a multi-breed heifer pregnancy genetic evaluation in beef cattle
… considered a rare phenotype in national cattle evaluations (NCE). Despite this, there are successful examples of existing evaluations for heifer pregnancy (HP) across several beef breed associations. These HP genetic evaluations typically rely on categorical exposure (1 = exposed; 0 = not …
-
Genetic evaluation of American shad Alosa sapidissima restoration success in James River, Virginia
… of supplementation on population structure and genetic diversity are rarely assessed. This study employed molecular markers to evaluate how supplementation of the James River American shad population with Pamunkey River origin larvae since 1994 has impacted genetic diversity and population …
-
Phenotypic and genetic evaluation of fitness characteristics in sheep under a range environment
… objectives of this dissertation were to evaluate genetic and environmental relationships between lamb and ewe traits including body weight, fleece weight and quality, prolificacy, body condition, ewe stayability and lamb survival. Average heritability estimates for lamb birth weight (BWT), weaning …
-
Genetic evaluation of ewe productivity and its component traits in Katahdin and Polypay sheep
… objectives of this dissertation were to evaluate genetic influences on ewe productivity, its growth and reproductive components, and measures indicative of accelerated lambing performance. Genetic parameters were estimated for total weight of litter weaned per ewe lambing (TW) and its components, …
-
Characteristics of progeny test herds and their effects on the genetic evaluation of young sires
… of progeny test herds and their effects on the genetic evaluation of young sires. Data for a study of response to pedigree selection by stud were evaluated from 6238 Holstein sires in four USDA animal model evaluations from January 1995 to February 1997. When data were restricted to the nine …
-
Genetic evaluation of walleye (Stizostedion vitreum vitreum) stock structure and recruitment in Claytor Lake, Virginia
… of primarily Kansas origin. A biochemical genetic approach was used to evaluate the present stock structure of Claytor Lake walleyes. Electrophoretic phenotypes for skeletal muscle malate dehydrogenase (MDH) and parvalbumin were identified (using starch and polyacrylamide gel …
-
Integrated genetic evaluation of breeding field test traits, competition traits and test status in Icelandic horses
… to bias in estimated breeding values and retards genetic improvement. The main aim of this thesis was to study integrated genetic evaluation of competition traits and breeding field test traits for Icelandic horses where the effects of preselection in the data were accounted for. Genetic …
-
Quantitative Genetic Evaluation of Full Sib-Mating and Selfing as Methods of Inbreeding in Zea Mays (L.)
Made available in DSpace on 2014-12-12T00:17:53Z (GMT). No. of bitstreams: 1 7317164.pdf: 3548673 bytes, checksum: cf219857ddf916ab88d13f73b21d3fe7 (MD5) Previous issue date: 1972
-
Variants of Uncertain Clinical Significance In Pediatric Microarray: Parent Perspectives
… (VUS) are commonly encountered in genomic evaluation, such as microarray testing. Such a result can be unsettling for both laboratory professionals and clinicians. As newer, more detailed genomic technologies integrate into pediatric genetic evaluation, parental perspective on the process …
-
Genetic Parameters and Genetic Trends of Female Fertility in Icelandic Dairy Cattle
… by calving interval, has been included in the genetic evaluation of Icelandic dairy cattle since 1993. In spite of this an unfavourable genetic trend is seen and, recent implementation of test-day models for the genetic evaluation of milk production has changed the premise of using calving …
-
Mælidagalíkan fyrir íslenska kúastofninn
… utilize random regression (RR) models for genetic evaluation of dairy cows but in Iceland a lactation model is still used. The objective of this study was to investigate the genetics of lactation curves of Icelandic dairy cows and the possible benefits of implementing an RR model for …
-
Use of QTL identified in breed crosses for genetic improvement in pigs
… of multiple QTL identified in breed crosses for genetic improvement of livestock were examined through marker-assisted introgression (MAI) and marker-assisted selection (MAS). Evaluation of the effectiveness of alternate strategies for MAI and MAS were carried out using stochastic computer …
-
Outcomes of Genetic Testing In A Genitourinary Genetics Clinic
… guidelines indicate when to refer patients to genetic counseling for GU-related hereditary cancer syndromes but there is limited research on the clinical picture of these patients, including their cancerous and non-cancerous features, the genetic testing strategy for this population, and the …
Page 1 of 2