Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Estimation Of Genetic Parameters And Time Trends In A Herd Of Angus Cattle full books in PDF, epub, and Kindle. Read online Estimation Of Genetic Parameters And Time Trends In A Herd Of Angus Cattle ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : David Wain Schafer
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (87 download)
Download or read book Estimation of Genetic Parameters and Time Trends in a Herd of Angus Cattle written by David Wain Schafer and published by . This book was released on 1987 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Terry C. Nelsen
Publisher :
ISBN 13 :
Total Pages : 390 pages
Book Rating : 4.:/5 (417 download)
Download or read book Time Trends, Sex and Age of Dam Correction Factors, and Genetic Parameters for Production Traits in Angus and Hereford Cattle written by Terry C. Nelsen and published by . This book was released on 1976 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Haymchal Harricharan
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.E/5 ( download)
Download or read book Estimates of Some Genetic Parameters of Economic Importance in Angus Cattle written by Haymchal Harricharan and published by . This book was released on 1967 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lee Evans
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (31 download)
Download or read book Estimates of Genetic Parameters Necessary for Constructing Selection Indexes for Beef Cattle written by Lee Evans and published by . This book was released on 1956 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James John Vanmiddlesworth
Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.:/5 (741 download)
Download or read book Estimation of Genetic and Phenotypic Trends in Preyearling Weights and Rates of Gain in an Arkansas Purebred Angus Population written by James John Vanmiddlesworth and published by . This book was released on 1980 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Frederick Holbert
Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (192 download)
Download or read book An Estimation of Genetic Progress in the Angus Herd at Ames Plantation written by J. Frederick Holbert and published by . This book was released on 1975 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Brian Wayne Kennedy
Publisher :
ISBN 13 :
Total Pages : 500 pages
Book Rating : 4.E/5 ( download)
Download or read book Estimates of Genetic, Environmental and Phenotypic Parameters in the Canadian Record of Performance Beef Cattle Population written by Brian Wayne Kennedy and published by . This book was released on 1974 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Loren Zabel
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (4 download)
Download or read book Methods of Estimating Genetic and Environmental Time Trends in Beef Cattle written by George Loren Zabel and published by . This book was released on 1973 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dixon D. Hubbard
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (319 download)
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:
Author : Edward Patrick Cunningham
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.E/5 ( download)
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:
Author : American Society of Animal Science. Western Section
Publisher :
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.:/5 (89 download)
Download or read book Proceedings written by American Society of Animal Science. Western Section and published by . This book was released on 1998 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ghulam Mohiuddin
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (67 download)
Download or read book Estimation of Genetic Parameters for Beef Cattle in UK Herds written by Ghulam Mohiuddin and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Brady Robert Jensen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)
Download or read book Genetic Parameter Estimates for Feet and Leg Traits in Red Angus Cattle written by Brady Robert Jensen and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to investigate the parameter estimates for feet and leg traits, relationships within feet and leg traits, and between feet and leg traits and production traits in Red Angus cattle. Subjective scores for 14 traits including: Body Condition Score (BCS), Front Hoof Angle (FHA), Front Heel Depth (FHD), Front Claw Shape (FCS), Rear Hoof Angle (RHA), Rear Heel Depth (RHD), Rear Claw Shape (RCS), Size of Hoof (Size), Front Side View (FSV), Knee Orientation (KNEE), Front Hoof Orientation (FHO), Rear Side View (RSV), Rear View (RV), and a Composite Score (COMP) were collected by trained evaluators on 1885 Red Angus cattle at different ranches across the United States. A three-generation pedigree file was obtained from the Red Angus Association of America (RAAA) that contained 13,306 animals, and EPDs on all animals with feet and leg scores were obtained. All traits except COMP were scored as intermediate optimum traits. Data were modeled using a linear bivariate animal model with random additive genetic and residual effects, and fixed effects of age and contemporary group (herd-year). Variances were estimated with ASREML 3.0 and 4.0. Heritability estimates of BCS, FHA, FHD, FCS, RHA, RHD, RCS, Size, FSV, Knee, FHO, RSV, RV, and COMP were 0.11, 0.20, 0.17, 0.09, 0.19, 0.25, 0.17, 0.36, 0.16, 0.17, 0.17, 0.30, 0.14, and 0.12, respectively. These results showed feet and leg traits were lowly to moderately heritable. Strong, positive genetic correlations were found between FHA and FHD (0.89), FHA and RHA (0.88), FHD and RHA (0.85), FHA and RHD (0.85), FHD and RHD (0.94), and FHO and Knee (0.95), indicating these traits may be highly related to one another. Strong negative correlations were found between Knee and FSV ( -0.59) and FHO and FSV ( -0.75). The strongest correlation was between front limb traits (FHA, FHD, FSV, FHO, Knee, and Comp) and the Stayability EPD (STAY) was FSV (r =0.16; r_s =0.20) and for rear limb traits (RHA, RHD, RCS, RSV, RV, and Comp) and STAY was RCS (r = -0.12; r_s=-0.14). This indicates that cattle with more slope to the angle of the shoulder stay in the herd longer and cattle with less curl to the inside of the claw tend to stay in the herd longer. Further studies with more data could help validate the relationship between feet and leg traits and production traits.
Author : Ghulam Mohiuddin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (67 download)
Download or read book Estimation of Genetic Parameters for Beef Cattle in UK Herds written by Ghulam Mohiuddin and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. M. de ALENCAR
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (71 download)
Download or read book Estimation of Genetic Parameters for Various Preweaning and Postweaning Beef Cattle Traits written by M. M. de ALENCAR and published by . This book was released on 1979 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimation of genetic parameters for various preweaning and postweaning beef cattle traits.
Author : Miroslav Kaps
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (422 download)
Download or read book Growth and Maturation of Angus Cattle written by Miroslav Kaps and published by . This book was released on 1997 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to estimate genetic parameters for growth, maturity and carcass traits, and to analyze relationship of each of these traits with mature weight. Growth data utilized in the study consisted of repeated weight measurements of 3044 Angus cows. A Brody growth curve was fitted to the data for each cow individually in order to predict asymptotic (mature) weight, age when animal reached 65% of mature weight, and weights, growth rates, degrees of maturity and relative growth rates at 365 and 550 days of age. Carcass data consisted of 3477 records of steers, including hot carcass weight, back fat-thickness, rib-eye area, cutability and marbling score. Genetic parameters of mature weight were estimated from a single-trait animal model for asymptotic weight, a two-trait animal model for asymptotic and weaning weight, and a two-trait animal model for repeated mature weights (measured after 4 y of age) and weaning weight. Heritability estimates for growth and carcass traits were obtained by restricted maximum likelihood from a set of two-trait animal models considering a given trait and weaning weight which was in the model to account for any effect of culling. Similarly, genetic correlations between mature weight and other traits were obtained from a set of three-trait models. A sample of 29943 animals was used for weaning weight measurements. Fixed effects in the models included weaning, cow and carcass contemporary groups. For the carcass traits the effect of slaughter age was included in the model as a covariate. Random effects in the model included direct genetic, maternal genetic and permanent environmental effects for weaning weight, but only direct genetic and repeated measurements (if in the model) for each of the other traits. Estimates of heritability for mature weight were. 44,.51 and. 57 for the single-trait model with asymptotic weight, two-trait model with asymptotic weight and two-trait model with repeated weights, respectively. The reduced heritability estimate from the single-trait model was most likely due to the effect of culling, thus, a genetic evaluation for mature size should be considered in a multiple-trait model including mature weight as well as some earlier measured growth trait. (Abstract shortened by UMI.).
Author : Richard John Dunn
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.3/5 (129 download)
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:
