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Estimation Of Maternal Heterosis Of Preweaning Traits And Prediction Of Rotational Crossbreeding Performance In Beef Cattle
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Book Synopsis Estimation of Maternal Heterosis of Preweaning Traits and Prediction of Rotational Crossbreeding Performance in Beef Cattle by : Richard Peterson McDonald
Download or read book Estimation of Maternal Heterosis of Preweaning Traits and Prediction of Rotational Crossbreeding Performance in Beef Cattle written by Richard Peterson McDonald and published by . This book was released on 1972 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Maternal Heterosis in Pre-weaning Traits and Prediction of Rotational Crossbreeding Performance in Beef Cattle by : Richard Peterson McDonald
Download or read book Estimation of Maternal Heterosis in Pre-weaning Traits and Prediction of Rotational Crossbreeding Performance in Beef Cattle written by Richard Peterson McDonald and published by . This book was released on 1972 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Direct and Maternal Additive and Heterotic Effects for Preweaning Growth Traits in Cattle Breeds Represented in the Southern Region by : Wayne Edward Wyatt
Download or read book Estimation of Direct and Maternal Additive and Heterotic Effects for Preweaning Growth Traits in Cattle Breeds Represented in the Southern Region written by Wayne Edward Wyatt and published by . This book was released on 1986 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heterosis and Productivity Estimates for Preweaning Traits in Brahman Crossbred Beef Cattle by : Marc Stephen Taylor
Download or read book Heterosis and Productivity Estimates for Preweaning Traits in Brahman Crossbred Beef Cattle written by Marc Stephen Taylor and published by . This book was released on 1978 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract.
Book Synopsis Crossbreeding Systems for Beef Cattle by : Peter T. Anderson
Download or read book Crossbreeding Systems for Beef Cattle written by Peter T. Anderson and published by . This book was released on 1990 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1984-12 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Animal Science written by and published by . This book was released on 1991 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Direct and Maternal Additive and Heterotic Genetic Effects for Preweaning Traits in Beef Cattle by : Chi Lawrence Tawah
Download or read book Estimation of Direct and Maternal Additive and Heterotic Genetic Effects for Preweaning Traits in Beef Cattle written by Chi Lawrence Tawah and published by . This book was released on 1987 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1971 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Within Breed Selection for Yearling Weight and Crossbreeding on the Cow-calf Unit by : Bruce E. Cunningham
Download or read book The Effects of Within Breed Selection for Yearling Weight and Crossbreeding on the Cow-calf Unit written by Bruce E. Cunningham and published by . This book was released on 1985 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstracts - American Society of Animal Science by :
Download or read book Abstracts - American Society of Animal Science written by and published by . This book was released on 1988 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consists of abstracts of papers presented at the national and sectional meetings of the American Society of Animal Science.
Book Synopsis Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Brahman X Hereford Crossbred Cows by : Lydia Boenig
Download or read book Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Brahman X Hereford Crossbred Cows written by Lydia Boenig and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Calf crop born, calf crop weaned, calf birth weight, calf weaning weight, and cow weight at weaning were evaluated from 1996 to 2009 in Brahman (B) and Hereford (H) straightbred and crossbred cows (n = 1,515). The objective of these analyses was to estimate heterosis for F1 and F2 females for these reproductive and maternal traits. Breed groups included B, H, F1 Hereford-sired (HB) and Brahman-sired (BH) cows (n = 114 purebreds, 55 F1, 52 F2). Second generation breed groups included cows sired by HB and out of HB dams (F2HB) and BH dams (HBxBH); and cows sired by BH and out of HB dams (BHxHB) and BH dams (F2BH). Least squares means were calculated for calf crop born, calf crop weaned, and calf birth and weaning weights, using numerous different models, where the trait was the dependent variable. Previous research and these preliminary analyses showed that the effects of year and cow age are real as is their interaction each other and with breed type. In each attempted model designed to remove these effects, different breed groups received excessive adjustments, rendering the resultant heterosis estimates inappropriate. To more clearly assess differences, presentation and visual evaluation of unadjusted means were conducted. The model for mature cow weight (cows at 6 years of age) included breed group as fixed effects and cow within breed group and year as random effects. F2 cows appeared to retain approximately 39% of F1 heterosis for calf crop born and approximately 50% for calf crop weaned. HB x BH cows delivered the lightest calves at 33.9 (4.74) kg and F2BH had the heaviest calves at birth at 36.6 (5.37) kg. BH cows weaned the heaviest calves at 240.9 (38.1) kg and F2BH cows weaned the lightest calves at 208.4 (31.9) kg. Sire breed of calf and age of cow appear to be important factors regarding weight traits. Retained heterosis for cow weight at weaning was higher than expected at 73%. Sire breed group differences (HB vs. BH) for these traits in F2 cows may merit further investigation.
Book Synopsis Maternal Productivity of Straightbred, F1and F2 Cows of a Five-breed Diallel by : Wendell Hardy McElhenney
Download or read book Maternal Productivity of Straightbred, F1and F2 Cows of a Five-breed Diallel written by Wendell Hardy McElhenney and published by . This book was released on 1985 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Individual and Maternal Additive and Nonadditive Genetic Effects on Preweaning Traits of Beef Cattle by : Ricardo Jose Vaamonde
Download or read book Estimation of Individual and Maternal Additive and Nonadditive Genetic Effects on Preweaning Traits of Beef Cattle written by Ricardo Jose Vaamonde and published by . This book was released on 1983 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract.
Book Synopsis Heterosis in Crossbreeding British Beef Breeds by : Jean Marie Hagerbaumer
Download or read book Heterosis in Crossbreeding British Beef Breeds written by Jean Marie Hagerbaumer and published by . This book was released on 1975 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heterotic and Environmental Effects in Rotational Crossbreeding of Beef Cattle by : Cristo Nazaré Barbosa Do Nascimento
Download or read book Heterotic and Environmental Effects in Rotational Crossbreeding of Beef Cattle written by Cristo Nazaré Barbosa Do Nascimento and published by . This book was released on 1968 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: To determine the productivity of Brahman, Hereford, and crossbred cattle measured by pregnancy, calving and weaning percentages of cows and weaning weight of calves. To estimate the yield of milk produced by crossbred, Brahman and Hereford cows. To determine the relationship of yield of milk produced by Brahman, Hereford and crossbred cows to growth rates and weaning weights of their calves. To evaluate the effect of sex, year and month of birth as well as breed or cross of calf, and age of dam on calf weaning weight.
Book Synopsis Heterosis Levels for Beef Cattle Preweaning Traits by : Asiye Yilmaz
Download or read book Heterosis Levels for Beef Cattle Preweaning Traits written by Asiye Yilmaz and published by . This book was released on 1996 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
