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Comparison Of Symmetric Differences Squared And Analysis Of Variance Procedures For Estimating Genetic And Environmental Variances And Covariances For Beef Cattle Weaning Weight Using Data And Simulation
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Book Synopsis Comparison of Symmetric Differences Squared and Analysis of Variance Procedures for Estimating Genetic and Environmental Variances and Covariances for Beef Cattle Weaning Weight Using Data and Simulation by : Cynthia Meyer Bruckner
Download or read book Comparison of Symmetric Differences Squared and Analysis of Variance Procedures for Estimating Genetic and Environmental Variances and Covariances for Beef Cattle Weaning Weight Using Data and Simulation written by Cynthia Meyer Bruckner and published by . This book was released on 1984 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis From Genes to Animal Behavior by : Miho Inoue-Murayama
Download or read book From Genes to Animal Behavior written by Miho Inoue-Murayama and published by Springer Science & Business Media. This book was released on 2011-02-03 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The biological and genetic bases of behavioral diversity have long been topics of study within many disciplines, including evolutionary biology, genetics, ethology, sociobiology, and comparative psychology, but only relatively recently have attempts been made to bring these different approaches together. This volume covers a wide range of interdisciplinary research which uses some of the newest and most promising methods and technologies. Presented here is an overview of findings in the ongoing search for the ultimate causes of behavior in several different species, including primates, dogs, rodents, birds, and fish. Divided into five parts, the work describes research on sexual and kin selection, personality and temperament, molecular genetics of personality, color vision and body coloration, and the neurological underpinnings of complex behaviors. Valuable for researchers as well as graduate students in a wide range of fields from neuroscience to ecology, the book is also useful to those seeking to move beyond the boundaries of their own discipline and to expand their knowledge.
Book Synopsis Neurobehavioral Genetics by : Byron C. Jones
Download or read book Neurobehavioral Genetics written by Byron C. Jones and published by CRC Press. This book was released on 2006-08-30 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete background to concepts and principles of behavioral genetics, Neurobehavioral Genetics: Methods and Applications, Second Edition features a broad spectrum of the most current techniques in neurobehavioral genetics in a single source. International researchers incorporate several new developments in the field, including: De
Download or read book Journal of Animal Science written by and published by . This book was released on 1989 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Approaches to Studying Basal Ganglia and Related Neuropsychiatric Disorders by : XIAO-HONG LU
Download or read book Novel Approaches to Studying Basal Ganglia and Related Neuropsychiatric Disorders written by XIAO-HONG LU and published by Academic Press. This book was released on 2009-11-06 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published since 1959, International Review of Neurobiology is a well-known series appealing to neuroscientists, clinicians, psychologists, physiologists, and pharmacologists. Led by an internationally renowned editorial board, this important serial publishes both eclectic volumes made up of timely reviews and thematic volumes that focus on recent progress in a specific area of neurobiology research. This volume is a collection of articles covering Novel Approaches to Studying Basal Ganglia and Related Neuropsychiatric Disorders. Topics covered include molecular profiling of direct and indirect striatal medium spiny neurons, the role of epigenetics in development and function of basal ganglia and transgenic animal models for Parkinson's disease.
Download or read book Animal Breeding Abstracts written by and published by . This book was released on 1987 with total page 1654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1987 with total page 1246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1987 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1987 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Variance and Covariance Compenents for Feed Intake, Average Daily Gain, and Postweaning Gain and Indices to Improve Feed Efficiency in Growing Beef Cattle by : Kelli June Retallick
Download or read book Genetic Variance and Covariance Compenents for Feed Intake, Average Daily Gain, and Postweaning Gain and Indices to Improve Feed Efficiency in Growing Beef Cattle written by Kelli June Retallick and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Feed is the single most expensive cost related to beef cattle production. Currently a 70 d performance test is recommended for accurate calculation of efficiency. Previous research has suggested intake tests can be limited to 35 d. Objectives of this study were to estimate genetic parameters for growth and intake traits, compare two alternative indices for feed efficiency, and quantify the genetic response to selection for feed efficiency combining an intake test with two types of gain data. On-test average daily feed intake (ADFI), on-test average daily gain (ADG), and postweaning gain (PWG) records on 5,606 growing steers and heifers were obtained from the U.S. Meat Animal Research Center in Clay Center, NE. On-test ADFI and ADG data were collected from a minimum of 62 to 148 d testing days. Independent quadratic regressions were fitted for body weight on time, and on-test ADG was predicted from the resulting equations. PWG was calculated by subtracting adjusted 205-d weights from 365-d weights and dividing by 160. Genetic correlations were estimated using multiple trait animal mixed models with ADG, ADFI, and PWG for both sexes as dependent variables. The genetic correlations between ADG and PWG for both steers (0.81) and heifers (0.65) were strong. This indicates PWG is a strong proxy for ADG on-test and long test periods may not be necessary. Indices combining EBVs for ADFI and ADG and for ADFI and PWG were evaluated. For each index, the weighting of gain was arbitrarily set to 1.0 and the weighting for ADFI was the negative of the average of the intra-contemporary group ratio of mean gain divided by mean ADFI. Values were combined with EBV to compute two index values per animal. Pearson correlations for steers (0.96) and heifers (0.45) indicated a strong relationship for steers between the indices. Because more animals can be measured for intake, using PWG increases genetic progress of selection for feed efficiency by 15-17% per year. These findings support using PWG data in combination with ADFI to determine efficient animals, lessen costs, and increase annual feed efficiency genetic change.
Book Synopsis Analysis of Growth and Production Traits in Twin and Non-twin Beef Cattle Data by : Lauren L. Christian
Download or read book Analysis of Growth and Production Traits in Twin and Non-twin Beef Cattle Data written by Lauren L. Christian and published by . This book was released on 1963 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic and Phenotypic Relationships Among Production and Carcass Characteristics in Beef Cattle by : Leo Edwin Dubose
Download or read book Genetic and Phenotypic Relationships Among Production and Carcass Characteristics in Beef Cattle written by Leo Edwin Dubose and published by . This book was released on 1965 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Statistical Methods for Genetic Improvement of Livestock by : Daniel Gianola
Download or read book Advances in Statistical Methods for Genetic Improvement of Livestock written by Daniel Gianola and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in statistics and computing as well as their application to genetic improvement of livestock gained momentum over the last 20 years. This text reviews and consolidates the statistical foundations of animal breeding. This text will prove useful as a reference source to animal breeders, quantitative geneticists and statisticians working in these areas. It will also serve as a text in graduate courses in animal breeding methodology with prerequisite courses in linear models, statistical inference and quantitative genetics.
Book Synopsis Analysis of Phylogenetics and Evolution with R by : Emmanuel Paradis
Download or read book Analysis of Phylogenetics and Evolution with R written by Emmanuel Paradis and published by Springer Science & Business Media. This book was released on 2006-11-25 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book integrates a wide variety of data analysis methods into a single and flexible interface: the R language. The book starts with a presentation of different R packages and gives a short introduction to R for phylogeneticists unfamiliar with this language. The basic phylogenetic topics are covered. The chapter on tree drawing uses R's powerful graphical environment. A section deals with the analysis of diversification with phylogenies, one of the author's favorite research topics. The last chapter is devoted to the development of phylogenetic methods with R and interfaces with other languages (C and C++). Some exercises conclude these chapters.
Book Synopsis Evolution and Selection of Quantitative Traits by : Bruce Walsh
Download or read book Evolution and Selection of Quantitative Traits written by Bruce Walsh and published by Oxford University Press. This book was released on 2018-06-21 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative traits-be they morphological or physiological characters, aspects of behavior, or genome-level features such as the amount of RNA or protein expression for a specific gene-usually show considerable variation within and among populations. Quantitative genetics, also referred to as the genetics of complex traits, is the study of such characters and is based on mathematical models of evolution in which many genes influence the trait and in which non-genetic factors may also be important. Evolution and Selection of Quantitative Traits presents a holistic treatment of the subject, showing the interplay between theory and data with extensive discussions on statistical issues relating to the estimation of the biologically relevant parameters for these models. Quantitative genetics is viewed as the bridge between complex mathematical models of trait evolution and real-world data, and the authors have clearly framed their treatment as such. This is the second volume in a planned trilogy that summarizes the modern field of quantitative genetics, informed by empirical observations from wide-ranging fields (agriculture, evolution, ecology, and human biology) as well as population genetics, statistical theory, mathematical modeling, genetics, and genomics. Whilst volume 1 (1998) dealt with the genetics of such traits, the main focus of volume 2 is on their evolution, with a special emphasis on detecting selection (ranging from the use of genomic and historical data through to ecological field data) and examining its consequences.
Book Synopsis Linear Models for the Prediction of Animal Breeding Values by : R. A. Mrode
Download or read book Linear Models for the Prediction of Animal Breeding Values written by R. A. Mrode and published by Cab International. This book was released on 2014 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prediction of producing desirable traits in offspring such as increased growth rate or superior meat, milk and wool production is a vital economic tool to the animal scientist. Summarizing the latest developments in genomics relating to animal breeding values and design of breeding programs, this new edition includes models of survival analysis, social interaction and sire and dam models, as well as advancements in the use of SNPs in the computation of genomic breeding values.
Book Synopsis Evolutionary Quantitative Genetics by : Derek A. Roff
Download or read book Evolutionary Quantitative Genetics written by Derek A. Roff and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impetus for this book arose out of my previous book, The Evolution of Life Histories (Roff, 1992). In that book I presented a single chapter on quanti tative genetic theory. However, as the book was concerned with the evolution of life histories and traits connected to this, the presence of quantitative genetic variation was an underlying theme throughout. Much of the focus was placed on optimality theory, for it is this approach that has proven to be extremely successful in the analysis of life history variation. But quantitative genetics cannot be ig nored, because there are some questions for which optimality approaches are inappropriate; for example, although optimality modeling can address the ques tion of the maintenance of phenotypic variation, it cannot say anything about genetic variation, on which further evolution clearly depends. The present book is, thus, a natural extension of the first. I have approached the problem not from the point of view of an animal or plant breeder but from that of one interested in understanding the evolution of quantitative traits in wild populations. The subject is large with a considerable body of theory: I generally present the assumptions underlying the analysis and the results, giving the relevant references for those interested in the intervening mathematics. My interest is in what quantitative genetics tells me about evolutionary processes; therefore, I have concentrated on areas of research most relevant to field studies.
