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Estimation Of Genetic And Phenotypic Parameters Of Milk Fat And Protein Yields Of Holstein Cattle Under Selection
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Book Synopsis Estimation of Genetic and Phenotypic Parameters of Milk, Fat and Protein Yields of Holstein Cattle Under Selection by : Thomas Joseph Lawlor
Download or read book Estimation of Genetic and Phenotypic Parameters of Milk, Fat and Protein Yields of Holstein Cattle Under Selection written by Thomas Joseph Lawlor and published by . This book was released on 1984 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic and Phenotypic Relationships Among Yields of Milk and Its Components in Dairy Cattle by : Arden Ray Hardie
Download or read book Genetic and Phenotypic Relationships Among Yields of Milk and Its Components in Dairy Cattle written by Arden Ray Hardie and published by . This book was released on 1972 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Relationships for Milk and Fat Yields Between Brazilian and United States Holstein Cattle Populations by : Claudio Napolis Costa
Download or read book Genetic Relationships for Milk and Fat Yields Between Brazilian and United States Holstein Cattle Populations written by Claudio Napolis Costa and published by . This book was released on 1998 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic relationships between Brazilian and U.S.A. Holstein cattle populations were studies using firstlactation 305-d ME milk and fat records of 29,413 daughters of 705 sires in Brazil and 726,932 daughters of 701 sires in the U.S.A. There were 358 sires with daughter records in both countries. Data sets consisted of all herds and low and high herds stratified by within-year standar deviation for milk (HYSD) computed within counthin country. Components of (co) variance, heritability, and genetic correlations for milk and fat yields were estimated using three data groupings: all, low and high HYDS data sets form within-country and between-country bivariete and multivariate analyses, simutaneous milk and fat yields in both countries. A sire model was solved with a restricted Maximum Likelihood (REML) derivative-free algorithm. Heritabilies for milk and fat yields using all the data were smaller in Brazil (.26 and .23) than in the in the U.S.A. (.33 and .36). Genetic correlations between milk and fat were .79 in Brazil and .62 in the U.S.A. Sire and residual variances for milk yield in Brazil were 59% and 81% (all herds), 51% and 58% (low HYSD herds), and 59% and 101% (high HYSD herds) as large as those obtained for all the U.S.A. data. corresponding percentage values for fat yield were 39% and 65%, and 48%, and 41 and 80%, respectively. Genetic correlations obtained from biavariate analyses between countries ranged from .79 to .87 for milk yield and were .89 or .90 for fat yield. Parameter estimates using all data for bibariate and multivariate analyses were essentially the same. Correlated response from sire selection using the U.S.A. information increased with average HYSD Brazil: daughter response was greatest (.77 kg/kg for milk yield and .63 kg/kg for fat yield) based on information from U.S.A. half-sisters in low HYSD herds. Unequal daughter responses from unequal genetic (co) variances under restrictive Brazilian conditions support the presence of an interaction between genetype and environment, which affects the yield expectation of daughters of U.S.A. sires performing in Brazilian herd enrironments.
Book Synopsis Estimates of Genetic and Phenotypic Parameters for Some Productive Characteristics of Holstein-Friesian Cattle by : Leo Rudolph Hansen
Download or read book Estimates of Genetic and Phenotypic Parameters for Some Productive Characteristics of Holstein-Friesian Cattle written by Leo Rudolph Hansen and published by . This book was released on 1964 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Trends in Genetic and Phenotypic Variances in Milk, Fat and Fat Test Production in Holstein Cattle by : Susana L. Mirande
Download or read book Trends in Genetic and Phenotypic Variances in Milk, Fat and Fat Test Production in Holstein Cattle written by Susana L. Mirande and published by . This book was released on 1984 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Interrelationships of Milk Composition and Yield by : Charles J. Wilcox
Download or read book Genetic Interrelationships of Milk Composition and Yield written by Charles J. Wilcox and published by . This book was released on 1943 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Genetics of Cattle, 2nd Edition by : Dorian Garrick
Download or read book The Genetics of Cattle, 2nd Edition written by Dorian Garrick and published by CABI. This book was released on 2014-11-28 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the time of domestication more than 10,000 years ago, cattle have played an increasingly crucial role in the development of human civilizations. Progress has been quite remarkable since the turn of the century; the sequencing of the bovine genome in 2009 launched new avenues for furthering our understanding of theoretical and practical aspects of cattle genetics. Covering a vast array of questions, this book reviews major topics from molecular and developmental genetics, disease resistance and immunogenetics to genetic improvement of dairy and beef breeds, addressing all current problems in the field. This second edition includes a new team of authors and completely new chapters on the genetics of fat production, nutrition, feed intake and efficiency, growth and body composition. Fully updated throughout, it provides a valuable resource on cattle genetics for researchers, breeders, veterinarians and postgraduate students.
Book Synopsis Genetic Influences on Fat and Protein Content of Milk in Dairy Cattle by : Roger Ronald Neitzel
Download or read book Genetic Influences on Fat and Protein Content of Milk in Dairy Cattle written by Roger Ronald Neitzel and published by . This book was released on 1967 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Population Parameters for First and Second Lactation Milk Production of Holstein Dairy Cattle Free of Selection Bias by : Max Frederick Rothschild
Download or read book Estimation of Population Parameters for First and Second Lactation Milk Production of Holstein Dairy Cattle Free of Selection Bias written by Max Frederick Rothschild and published by . This book was released on 1978 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Genetic Parameters and Sire Rankings for Holstein Linear Type Scores and Milk Production by Multiple Trait Analysis by : Bobby Dennis Banks
Download or read book Estimation of Genetic Parameters and Sire Rankings for Holstein Linear Type Scores and Milk Production by Multiple Trait Analysis written by Bobby Dennis Banks and published by . This book was released on 1986 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Genetic Relationships of Solids-not-fat Production in Bovine Milk by : Marvin Lyle Nelson
Download or read book A Study of the Genetic Relationships of Solids-not-fat Production in Bovine Milk written by Marvin Lyle Nelson and published by . This book was released on 1965 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heritabilities and Phenotypic and Genetic Correlations Between Type Ratings and Milk and Butterfat Production in Holstein-Friesian Cattle by : Ralph Gerald Mitchell
Download or read book Heritabilities and Phenotypic and Genetic Correlations Between Type Ratings and Milk and Butterfat Production in Holstein-Friesian Cattle written by Ralph Gerald Mitchell and published by . This book was released on 1959 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Parameters of Milk Yield and Calving Interval in Holstein Dairy Herds Differing by Phenotypic Variance of Yield by : Thomas Harold Short
Download or read book Genetic Parameters of Milk Yield and Calving Interval in Holstein Dairy Herds Differing by Phenotypic Variance of Yield written by Thomas Harold Short and published by . This book was released on 1989 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Weighting Information from Relatives to Select for Milk in Holsteins by : Oliver Wendell Deaton
Download or read book Weighting Information from Relatives to Select for Milk in Holsteins written by Oliver Wendell Deaton and published by . This book was released on 1964 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Genetic Parameters for Milk and Fat Yields for Dairy Cattle Populations in Spain and the United States by : María-Jesús Carabaño
Download or read book Estimation of Genetic Parameters for Milk and Fat Yields for Dairy Cattle Populations in Spain and the United States written by María-Jesús Carabaño and published by . This book was released on 1988 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dairy Chemistry and Biochemistry by : P. F. Fox
Download or read book Dairy Chemistry and Biochemistry written by P. F. Fox and published by Springer. This book was released on 2015-06-19 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the most comprehensive introductory text on the chemistry and biochemistry of milk. It provides a comprehensive description of the principal constituents of milk (water, lipids, proteins, lactose, salts, vitamins, indigenous enzymes) and of the chemical aspects of cheese and fermented milks and of various dairy processing operations. It also covers heat-induced changes in milk, the use of exogenous enzymes in dairy processing, principal physical properties of milk, bioactive compounds in milk and comparison of milk of different species. This book is designed to meet the needs of senior students and dairy scientists in general.
