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Direct And Maternal Effects On Preweaning Characters Of Brahman Hereford And Brahman Hereford Crossbred Cattle
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Book Synopsis Direct and Maternal Effects on Preweaning Characters of Brahman, Hereford and Brahman-Hereford Crossbred Cattle by : Rodney Lee Roberson
Download or read book Direct and Maternal Effects on Preweaning Characters of Brahman, Hereford and Brahman-Hereford Crossbred Cattle written by Rodney Lee Roberson and published by . This book was released on 1984 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct and Maternal Genetic Effects on Preweaning Characteristics of Brahman, Hereford and Brahman-Hereford Crossbred Cattle by :
Download or read book Direct and Maternal Genetic Effects on Preweaning Characteristics of Brahman, Hereford and Brahman-Hereford Crossbred Cattle written by and published by . This book was released on 1986 with total page 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:
Download or read book Journal of Animal Science written by and published by . This book was released on 1986 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct-maternal Genetic Correlations for Preweaning Growth in Hereford Cattle by : Assefaw Tewolde
Download or read book Direct-maternal Genetic Correlations for Preweaning Growth in Hereford Cattle written by Assefaw Tewolde and published by . This book was released on 1981 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maternal effects are an important source of variation in pre-weaning traits in beef cattle.
Book Synopsis Evaluation of direct and maternal effects on weaning traits in brahman cattle by : J.J. Beltran Bru
Download or read book Evaluation of direct and maternal effects on weaning traits in brahman cattle written by J.J. Beltran Bru and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from 1953 to 1976 on weaning wigths and scores of 3,765 Brahman calves were obtained from a private ranch in Central Florida.
Download or read book Special Report written by and published by . This book was released on 1995 with total page 348 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 1984 with total page 560 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.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1996 with total page 1340 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 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Australian Journal of Agricultural Research by :
Download or read book Australian Journal of Agricultural Research written by and published by . This book was released on 2003 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Reciprocal Cross Differences in Brahman-Hereford F2 Cows by : Bradley Allen Wright
Download or read book Reciprocal Cross Differences in Brahman-Hereford F2 Cows written by Bradley Allen Wright and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from 75 F2 Brahman-Hereford cows of four specific breed combinations, F2 HB (produced by F1 HB sires x F1 HB dams, where "HB" refers to cattle sired by Hereford bulls and out of Brahman cows), F2 BH (produced by F11 BH sires x F1 BHdams), HB x BH and BH x HB, were evaluated for maternal performance at the Texas A & M Research Center near McGregor. Differences between breed combinations were analyzed for calf crop born (CCB), calf crop weaned (CCW), calf survival (CS), birthweight (BW), weaning weight (WW), and cow weight at palpation (PW). The adjusted means for F2 HB, F2 BH, HB x BH, and BH x HB were 0.84 " 0.06, 0.57 " 0.07, 0.82 " 0.06, and 0.62 " 0.08, respectively, for CCW. F2 HB cows had a 0.27 " 0.09 higherpercent calf crop weaned than F2 BH cows (P
Book Synopsis Livestock Productivity and Trypanotolerance by : International Livestock Centre for Africa
Download or read book Livestock Productivity and Trypanotolerance written by International Livestock Centre for Africa and published by ILRI (aka ILCA and ILRAD). This book was released on with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Consolidated Progress Report written by and published by . This book was released on 1976 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Factors Affecting Production Traits in Brahman Cattle in Mexico by : Manuel Villarreal
Download or read book Some Factors Affecting Production Traits in Brahman Cattle in Mexico written by Manuel Villarreal and published by . This book was released on 1975 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Direct and Maternal Effects on Weaning Traits in Brahman Cattle by : Jorge J. Beltran
Download or read book Evaluation of Direct and Maternal Effects on Weaning Traits in Brahman Cattle written by Jorge J. Beltran and published by . This book was released on 1978 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
