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 8 of 8 for “"Random regression"”.
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Fuzzy random regression to improve coefficient estimation for Malaysian Agricultural Industry
… solution. Hence, this study proposes a fuzzy random regression method to estimate the coefficient values for which statistical data contains simultaneous fuzzy random information. A numerical example illustrates the proposed solution approach whereby coefficient values are successfully deduce …
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Caracterização dos motivos de descarte e estimativas de parâmetros genéticos para longevidade de vacas da raça holandês
… and unknown reasons were estimated using random regression models (RRM) with fifth-order Legendre polynomials. Heritability estimates ranged from low to high, depending on age and culling reason: age-related (0.17–0.38), functionality (0.04–0.52), economic (0.002–0.20), conformation …
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The role of energy balance in productivity, health, and fertility of first lactation Holsteins, Jerseys, and their reciprocal crosses
… equations were developed across breeds. Random regression model were used to predict energy consumed (TEC), energy needed for production, maintenance, and growth at every week of lactation (WOL). Energy balance (EB) was calculated at every WOL by subtracting energy for production, …
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Mælidagalíkan fyrir íslenska kúastofninn
Many countries 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 …
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Avaliação genética da produção de leite no dia do controle de caprinos de aptidão leiteira utilizando modelos de regressão aleatória multicaracterísticos
O presente trabalho teve como objetivo principal realizar a avaliação genética da produção de leite no dia do controle utilizando modelos de regressão aleatória multicaracterísticos (MRAM). Os objetivos específicos foram: Estudar as divergências genéticas entre as quatro primeiras lactações de …
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The Evaluation of Genetic and Phenotypic Differences Associated with Short Term Selection of Four Different Feed Efficiency Strategies in Japanese Quail
… growth and maintenance efficiencies through random regression in concert with population parameters to explain variation in feed intake. After four generations of selection, genetic and phenotypic parameters for each FE strategy and their component traits were evaluated and compared between …
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Alternativas para avaliação genética na raça gir leiteiro
Os arquivos de pedigree e de produção de leite da raça Gir provenientes do Programa Nacional de Melhoramento do Gir Leiteiro (PNMGL), conduzido pela Embrapa Gado de Leite em parceria com a Associação Brasileira dos Criadores de Gir Leiteiro (ABCGIL), foram utilizados na pesquisa de alternativas …
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Development of a multi-breed heifer pregnancy genetic evaluation in beef cattle
… using TM, linear animal model (LM), and random regression model (RRM) methods. This study used HP data collected on heifers from 1974 to 2020 provided by the International Genetic Solutions (IGS) genetic evaluation, sourced from 9 partner breed associations. Because each breed …