Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Estimates Of Combining Abilities Heterotic Effects And Phenotypic Correlations Among In Bred Lines Of Beef Cattle And Their Line Crosses
Download Estimates Of Combining Abilities Heterotic Effects And Phenotypic Correlations Among In Bred Lines Of Beef Cattle And Their Line Crosses full books in PDF, epub, and Kindle. Read online Estimates Of Combining Abilities Heterotic Effects And Phenotypic Correlations Among In Bred Lines Of Beef Cattle And Their Line Crosses ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Estimates of Combining Abilities, Heterotic Effects and Phenotypic Correlations Among In-bred Lines of Beef Cattle and Their Line-crosses by : Paul Edwin Humes
Download or read book Estimates of Combining Abilities, Heterotic Effects and Phenotypic Correlations Among In-bred Lines of Beef Cattle and Their Line-crosses written by Paul Edwin Humes and published by . This book was released on 1969 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigations were based on a complete diallel cross among three inbred lines of Hereford cattle. Records of Angus calves born during the same period were used to obtain more accurate estimates of environmental effects and to determine breed differences among the various traits included in the study. Estimates of general combining ability, specific combining ability and reciprocal effects were obtained. In addition, heterotic estimates of the linecross calves were determined as well as phenotypic correlations among all the performance traits, blood constituents, carcass traits, organoleptic measurements and endocrine gland weights. General and specific combining ability effects were either small or nonexistent for all of the preweaning traits of the males except conformation score at 227 kg. Among the females, significant general combining ability effects were detected for preweaning ADG, age at 227 kg. and condition score at 227 kg. Specific combining ability effects were nonsignificant among both sexes except for birth weights of the 2 X 3 and 3 X 2 cross females. Angus calves were smaller at birth, had higher preweaning gains, were younger at 227 kg. and had higher conformation and condition scores at weaning than the Hereford calves. A significant heterotic effect was detected for percent stillbirths with the linecross calves showing more vigor and fewer dead at birth. The Angus exceeded the Herefords in percent calves born and weaned (P
Download or read book Journal of Animal Science written by and published by . This book was released on 1973 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Dissertation Index, 1861-1972: Biological sciences: anatomy, physiology, and genetics by : Xerox University Microfilms
Download or read book Comprehensive Dissertation Index, 1861-1972: Biological sciences: anatomy, physiology, and genetics written by Xerox University Microfilms and published by . This book was released on 1973 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Breeding Abstracts written by and published by . This book was released on 1996-07 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Meat Sciences by : Carrick Devine
Download or read book Encyclopedia of Meat Sciences written by Carrick Devine and published by Elsevier. This book was released on 2014-07-22 with total page 1697 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Meat Sciences, Second Edition, Three Volume Set prepared by an international team of experts, is a reference work that covers all important aspects of meat science from stable to table. Its topics range from muscle physiology, biochemistry (including post mortem biochemistry), and processing procedures to the processes of tenderization and flavor development, various processed meat products, animal production, microbiology and food safety, and carcass composition. It also considers animal welfare, animal genetics, genomics, consumer issues, ethnic meat products, nutrition, the history of each species, cooking procedures, human health and nutrition, and waste management. Fully up-to-date, this important reference work provides an invaluable source of information for both researchers and professional food scientists. It appeals to all those wanting a one-stop guide to the meat sciences. More than 200 articles covering all areas of meat sciences Substantially revised and updated since the previous edition was published in 2004 Full color throughout
Download or read book Animal Breeding Abstracts written by and published by . This book was released on 1987 with total page 1654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Australian Journal of Experimental Agriculture by :
Download or read book Australian Journal of Experimental Agriculture written by and published by . This book was released on 2006 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetics Abstracts written by and published by . This book was released on 1999 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Developments for Embracing Genomic Selection in Breeding Applications by : Diego Jarquin
Download or read book New Developments for Embracing Genomic Selection in Breeding Applications written by Diego Jarquin and published by Frontiers Media SA. This book was released on 2022-02-18 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Genetic Statistics by : Oscar Kempthorne
Download or read book An Introduction to Genetic Statistics written by Oscar Kempthorne and published by . This book was released on 1969 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corn written by C. Wayne Smith and published by John Wiley & Sons. This book was released on 2004-03-08 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt: Your all-in-one guide to corn. This book provides practical advice on planting techniques and rates, seed production, treating plant diseases, insect infestation and weeds, harvesting, processing, and worldwide utilization. This is the fourth, and final, volume in the series of comprehensive references on the major crops of the world. Covers new biotechnology techniques for plant breeding and pest management Provides practical advice on planting techniques and rates, seed production, treating plant diseases, insect infestation and weeds, harvesting, processing and worldwide utilization.
Book Synopsis Quantitative Genetics: Selection by : William G. Hill
Download or read book Quantitative Genetics: Selection written by William G. Hill and published by Van Nostrand Reinhold Company. This book was released on 1984 with total page 426 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 2006 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selection Applied, Response of Traits and Combining Abilities of Inbred Lines of Beef Cattle by : Frank Kent Hoornbeek
Download or read book Selection Applied, Response of Traits and Combining Abilities of Inbred Lines of Beef Cattle written by Frank Kent Hoornbeek and published by . This book was released on 1965 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigations reported are based on two studies; the first is concerned with the selection practiced for performance in one inbred Angus and three inbred Hereford lines of cattle, the realized responses, levels of inbreeding and associated performance, and heritabilities of the performance traits. Selection differentials for all performance traits were positive when the averages for both parents were considered. Selection differentials computed from the sire side of the matings were all positive and were higher than those on the dam side as a consequence of greater selection intensity through the sires. Automatic selection against inbreeding occurred on the sire side in conjunction with selection for increased performance. Due to the low selection intensity for females, selection was for increased inbreeding on the dam side of the matings. Inbreeding increased in all lines over a 12 year period. Performance increased early in the inbreeding program, then levelled off and subsequently declined. Score improved in all lines. Generally favorable response in the Angus line resulted from a lower initial performance, a broader genetic base and more animals from which to select. Data from repeat matings showed that more variability in performance existed during the preweaning than in the postweaning period. Zero and low levels of inbreeding were associated with high preweaning performance and low postweaning performance. At higher stages of inbreeding, the reverse was true. Heritability estimates differentiated between the highly heritable traits, postweaning rate and economy of gain, and the lowly and moderately heritable traits respectively, preweaning gain and score. In the second study the performance data on calves resulting from a complete diallel cross between the three Hereford lines involved in the first study were analyzed. In addition, blood samples were analyzed at 450 and 750 pounds for amino acid nitrogen, urea nitrogen and creatinine. Differences in general combining ability between lines were found for postweaning rate and economy of gain. The Lionheart line was the best general combiner, followed by the David and Prince lines. Specific combining ability differences in rate of gain favored crosses between the more rapidly gaining Lionheart and David lines. The Prince and David cross was the lowest performing cross among the specific crosses. The analyses of differences in economy of gain were similar to those for postweaning rate of gain, but there was also a significant difference in favor of linecross over inbred calves. This was probably due to the economy of gain contributed by the Prince line to the linecross calves. A highly significant association existed between postweaning rate and economy of gain, with rate of gain accounting for 77 percent of the variation in economy of gain. Higher scores were given to Lionheart x Prince calves than calves resulting from crosses involving the lower scoring David line. Linecross calves were scored higher than inbred calves, with the Prince and David inbred calves contributing to the low scores of all inbreds. Line of dam differences in score at 800 pounds were due to the less rapidly gaining David calves during the preweaning period scoring lower at 800 pounds. When all inbred and linecross calves were considered, blood creatinine was higher at 450 pounds in calves from David dams which were inferior milkers, and lower in the calves at 750 pounds sired by the David bulls, due to lower gaining inbred David calves. A significant difference in blood amino acid nitrogen at 750 pounds was due to the low content in calves sired by the Prince bulls, which is possibly a function of economy of gain contributed by this line. Urea nitrogen at 750 pounds and feed required per 100 pounds of gain were negatively correlated. At 450 pounds, blood creatinine and amino acid nitrogen were highly associated.