Download or read book Estimation of Phenotypic and Genetic Parameters Associated with Milk Production in Beef Cows written by Mohd Khusahry Mohd Yusuff and published by . This book was released on 1977 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Moment type Estimation of Genetic Parameters and Their Variances for Calving Date and Production Traits from Hereford Data Using Multi way Models written by Edward J. Otieno-Rege and published by . This book was released on 1985 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

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:

Download or read book Estimation of Genetic and Phenotypic Parameters in Beef Cattle written by Will R. Getz and published by . This book was released on 1967 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Estimation of Genetic and Phenotypic Parameters in a Beef Cattle Population written by Edward Patrick Cunningham and published by . This book was released on 1962 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Phenotypic Genetic and Environmental Parameters in Two Beef Cattle Populations written by Theodore R. Rounsaville and published by . This book was released on 1971 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Uniform Beef Improvement Programs written by Dixon D. Hubbard and published by . This book was released on 1981 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Genetic Parameters in Straightbred and Crossbred Beef Cattle Populations written by Richard John Dunn and published by . This book was released on 1968 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Phenotypic and Genetic Relationships Among Hip Height and Productive and Reproductive Performance in Brahman Cattle written by Carlos A. Vargas L. and published by . This book was released on 2000 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT (cont.): Females of SFS and MFS surpassed LFS by demonstrating earlier calving dates, and greater calving, calf survival and weaning rates. There is a strong genetic relationship between WHH and WWT that has an impact on HH18. Thus, if the breeding objective is to manipulate growth to 18 mo of age, implementation of multiple trait breeding programs considering WHH and WWT will aid in the prediction of hip height at time of selection.

Download or read book Phenotypic and Genetic Variation of Milk Fat Components Incorporating Mid Infrared Technology written by Allison Fleming and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Milk fat influences the economic, nutritional, flavour, and physico-chemical properties of milk and milk products. Genetic selection for fat components is therefore of interest. This would require an efficient means of phenotyping these traits routinely, on a large scale. The purpose of this study was to assess the ability to predict milk fat components using mid-infrared (MIR) spectroscopy and to examine the phenotypic and genetic variation of these traits. Individual cow milk samples from multiple breeds and herds were collected during routine milk recording multiple times throughout the lactation and the MIR spectra obtained. Milk samples were further analyzed for average milk fat globule (MFG) size and fatty acid profile using gold standard methodologies. Partial least squares regression models were employed to develop equations to predict the milk fat component traits from the MIR spectra of milk samples. Genetic parameters were estimated in Holsteins for both the measured and predicted MFG size and predicted fatty acids, along with their genetic correlations with milk production traits using multi-trait animal models. Milk fatty acid contents could be predicted with variable accuracy depending on the calibration set used and the concentration of the fatty acid in milk. In first-parity Holsteins, the predicted groups of fatty acids were found to have genetic correlations of similar magnitude with already recorded milk production traits. Differences in the genetic correlations with fat yield, fat and protein percentages, and fat to protein ratio were found for different fatty acid groups, including different trends in average daily genetic correlations at the beginning of lactation. Average MFG size was significantly affected by herd, breed, days in milk, season, and milking period. The prediction of MFG size from MIR spectra was poor, and predicted values had greater phenotypic correlations with fat percentage than their measured counterparts. A moderate heritability was found for average MFG size, but predicted values had very strong genetic correlations with fat percentage, limiting their utility. Mid-infrared technology provides an opportunity to obtain novel trait phenotypes, including fatty acids, for all milk recorded cows that could be used to help advance the Canadian dairy industry.

Download or read book Estimation of Genetic Parameters of Meat and Milk Traits in Dual Purpose Cattle written by Andrzej Zarnecki and published by . This book was released on 1979 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ruminant Nutrition written by Robert Jarrige and published by John Libbey Eurotext. This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with feed evaluation systems, the nutrient requirements of ruminant livestock and the feeding value of a wide range of feedstuffs. This book lists about 800 typical forages, 65 crop residues and 120 concentrate and by-product feeds. It is suitable for teachers, specialist scientists and industrialists.

Download or read book Sustainable Food Production written by Paul Christou and published by Springer. This book was released on 2012-12-05 with total page 1869 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gathering some 90 entries from the Encyclopedia of Sustainability Science and Technology, this book covers animal breeding and genetics for food, crop science and technology, ocean farming and sustainable aquaculture, transgenic livestock for food and more.

Download or read book Dairy 2007 written by and published by . This book was released on 2010 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: