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Author : Brian Wayne Kirkpatrick
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (89 download)
Download or read book Prediction of Beef Cow Efficiency written by Brian Wayne Kirkpatrick and published by . This book was released on 1984 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Henry C. Gilliam
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (31 download)
Download or read book The U.S. Beef Cow-calf Industry written by Henry C. Gilliam and published by . This book was released on 1984 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extract: The number of beef cows in each of the four major U.S. cow-calf production regions declined by about one-fifth between 1975 and 1980 in response to sharp reductions in feeder cattle prices and increases in production costs during the midseventies. Several physical measures of performance indicate that most resources were used more efficiently in beef cow-calf production in 1980 than in 1975. This report identifies the structural characteristics and operating practices for beef cow-calf production operations in the United States.
Author :
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (89 download)
Download or read book Beef 2007-08 written by and published by . This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jason R. Bowey
Publisher :
ISBN 13 : 9781321062939
Total Pages : 73 pages
Book Rating : 4.0/5 (629 download)
Download or read book Evaluation of Modeled Feed Efficiency in Beef Cattle written by Jason R. Bowey and published by . This book was released on 2014 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study were to evaluate animal performance and actual feed efficiency and how they relate to model predictions through feed allocation models. In addition, ultrasound measures, scrotal circumference, and molecular value predictions (MVP) were compiled to correlate for associations with efficiency. Six hundred forty-eight growing bulls comprised of Angus, Hereford, and percentage Simmental were placed on intake trials. Data was collected for intake, weight change, and animal performance at either 14-28 d intervals. Feed intake was also predicted with 2 biological simulation models: a) Cornell Value Discovery System and b) NRC update 2000 level 2. Observed residual feed intake (oRFI) was estimated using observed feed intake in a linear statistical model. Observed feed conversion ratio (oFCR) was estimated as observed feed intake divided by average daily gain. Observed partial efficiency of growth (oPEG) was calculated as ADG divided by the difference between dry matter intake and intake for maintenance from published standards. Observed relative growth rate (oRGR) and observed kleiber ratio (oKR) was also determined as the difference between the log of final BW and initial BW over the number of days on test and as the ratio of ADG to metabolic body weight, respectively. Each model also held a prediction for the various feed efficiency measures using feed allocation estimates and projected weight gains in their determinations. Data on feed efficiency measures on all 648 bulls, ultrasound measures and scrotal circumferences on 346 bulls, and hair samples on sixty-six half-blood Simmental bulls for a DNA analysis for MVP were collected and compiled. All data was correlated to determine relationships between feed efficiency measures, both observed and model predicted, as well as ultrasound, scrotal measures, and MVP data as they link to efficiency. Observed feed conversion ratio showed a high correlation both the CVDS FCR (cFCR, 0.769; P0.10) and the NRC FCR (nFCR, 0.847; P
Author : Donald Neil Moore
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (233 download)
Download or read book Predicting Feed Efficiency in Beef Cattle Through the Use of Linear Measurements written by Donald Neil Moore and published by . This book was released on 1990 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 0309317053
Total Pages : 22 pages
Book Rating : 4.3/5 (93 download)
Download or read book Nutrient Requirements of Beef Cattle written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-05-16 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1944, the National Research Council (NRC) has published seven editions of the Nutrient Requirements of Beef Cattle. This reference has guided nutritionists and other professionals in academia and the cattle and feed industries in developing and implementing nutritional and feeding programs for beef cattle. The cattle industry has undergone considerable changes since the seventh revised edition was published in 2000 and some of the requirements and recommendations set forth at that time are no longer relevant or appropriate. The eighth revised edition of the Nutrient Requirements of Beef Cattle builds on the previous editions. A great deal of new research has been published during the past 14 years and there is a large amount of new information for many nutrients. In addition to a thorough and current evaluation of the literature on the energy and nutrient requirements of beef in all stages of life, this volume includes new information about phosphorus and sulfur contents; a review of nutritional and feeding strategies to minimize nutrient losses in manure and reduce greenhouse gas production; a discussion of the effect of feeding on the nutritional quality and food safety of beef; new information about nutrient metabolism and utilization; new information on feed additives that alter rumen metabolism and postabsorptive metabolism; and future areas of needed research. The tables of feed ingredient composition are significantly updated. Nutrient Requirements of Beef Cattle represents a comprehensive review of the most recent information available on beef cattle nutrition and ingredient composition that will allow efficient, profitable, and environmentally conscious beef production.
Author : Rodney A. Hill
Publisher : John Wiley & Sons
ISBN 13 : 1118388240
Total Pages : 328 pages
Book Rating : 4.1/5 (183 download)
Download or read book Feed Efficiency in the Beef Industry written by Rodney A. Hill and published by John Wiley & Sons. This book was released on 2012-06-18 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feed Efficiency in the Beef Industry provides a thorough and concise overview of feed efficiency in beef cattle. It frames the great importance of feed efficiency to the industry and details the latest findings of the many scientific disciplines that intersect and aim to improve efficient and sustainable production of nutritious beef. The vast majority of production costs are directly tied to feed. With increased demand for grains to feed a rapidly increasing world population and to supply a new demand for alternative fuels, feed costs continue to increase. In recent years, the negative environmental impacts of inefficient feeding have also been realized; as such feed efficiency is an important factor in both economic viability and environmental sustainability of cattle production. Feed Efficiency in the Beef Industry covers a broad range of topics ranging from economic evaluation of feed efficiency to the physiological and genetic bases of efficient conversion of feed to high quality beef. Chapters also look at how a fuller understanding of feed efficiency is leading to new selective breeding efforts to develop more efficient cattle. With wide-ranging coverage from leading international researchers, Feed Efficiency will be a valuable resource for producers who wish to understand the complexities, challenges, and opportunities to reduce their cost of production, for students studying the topic and for researchers and professionals working in the beef industry.
Author : Matthew Phillip Schaefer
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.3/5 (129 download)
Download or read book Forecasting Accuracy, Rational Expectations, and Market Efficiency in the US Beef Cattle Industry written by Matthew Phillip Schaefer and published by . This book was released on 1999 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Samantha M. Rasmussen
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (124 download)
Download or read book Predicting Feed Efficiency in Beef Cattle written by Samantha M. Rasmussen and published by . This book was released on 2020 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single nucleotide polymorphism (SNP) methodology is being used as a means to determine genetic merit in beef cattle by interrogating animal genomes and associating the findings with performance traits. The ability to predict future trait performance is highly attractive to beef cattle producers as they can make important management and financial decisions earlier and with more certainty. To fully realize the potential of SNP testing technology the methodology must be vetted to assure producer confidence. The purpose of this project is to assess three sources of information for beef cattle trait assessment. These information sources are: SNP testing, Expected Progeny Differences (EPDs) and direct animal measures. To conduct this study, young beef bulls (n = 181) consigned to the SIU Beef Evaluation Station were utilized in an 84-day period to obtain direct measures. The SIU Beef Evaluation Station uses the Calan-Broadbent confinement feeding system which allows researchers to monitor individual animal feed intake and weight gain. Feed efficiency traits are important to the cattle industry since feed is generally among the largest input cost to producers. The evaluation of bulls also assesses reproductive and carcass traits which are also important to the producer's financial success. Individual animal performance information was sent to the bull's respective breed association for determination of EPD's. Blood samples were submitted to a commercial company for SNP testing (Igentiy Gold and Igenity Beef Profile, Neogen, Lincoln, NE). Data was analyzed using pairwise comparisons by source of information. Pearson correlations were used to determine the direction and the strength for sources of information to vary together. Data was determined to be correlated when the correlation coefficient was 0.3 ≤ r ≤ −0.3. No correlation was observed between RFISIU :RFINEO (r = 0.042), RFINEO:F/GSIU (r = −0.09), RFISIU:ADGNEO (r = 0.091), RFISIU:ADGSIU (r = −0.039), RFINEO:ADGNEO (r = 0.236), BWNEO:BWSIU (r = 0.115), FRAMESIU:BWSIU (r = 0.111), FRAMESIU:BWEPD (r = 0.159), FRAMESIU:ADGSIU (r = 0.148), FRAMESIU:ADGNEO (r = -0.005), BWSIU:BWEPD (r = 0.256), and BWNEO:BWEPD (r = 0.226). Correlations were observed between RFISIU:F/GSIU (r = 0.455), ADGSIU :ADGNEO (r = 0.353), and FRAMESIU:BWNEO (r = 0.326). This study determined that beef bulls should continue to be performance tested due to discrepancies between sources of information for key animal performance traits. Assessment of SNPs used in the commercial test should continue.
Author : Subcommittee on Beef Cattle Nutrition
Publisher : National Academies Press
ISBN 13 : 0309069343
Total Pages : 249 pages
Book Rating : 4.3/5 (9 download)
Download or read book Nutrient Requirements of Beef Cattle written by Subcommittee on Beef Cattle Nutrition and published by National Academies Press. This book was released on 2000-05-16 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: As members of the public becomes more concious of the food they consume and its content, higher standards are expected in the preparation of such food. The updated seventh edition of Nutrient Requirements of Beef Cattle explores the impact of cattle's biological, production, and environmental diversities, as well as variations on nutrient utilization and requirements. More enhanced than previous editions, this edition expands on the descriptions of cattle and their nutritional requirements taking management and environmental conditions into consideration. The book clearly communicates the current state of beef cattle nutrient requirements and animal variation by visually presenting related data via computer-generated models. Nutrient Requirements of Beef Cattle expounds on the effects of beef cattle body condition on the state of compensatory growth, takes an in-depth look at the variations in cattle type, and documents the important effects of the environment and stress on food intake. This volume also uses new data on the development of a fetus during pregnancy to prescribe nutrient requirements of gestating cattle more precisely. By focusing on factors such as product quality and environmental awareness, Nutrient Requirements of Beef Cattle presents standards and advisements for acceptable nutrients in a complete and conventional manner that promotes a more practical understanding and application.
Author : Rodney A. Hill
Publisher : John Wiley & Sons
ISBN 13 : 0470959525
Total Pages : 328 pages
Book Rating : 4.4/5 (79 download)
Download or read book Feed Efficiency in the Beef Industry written by Rodney A. Hill and published by John Wiley & Sons. This book was released on 2012-09-11 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feed Efficiency in the Beef Industry provides a thorough and concise overview of feed efficiency in beef cattle. It frames the great importance of feed efficiency to the industry and details the latest findings of the many scientific disciplines that intersect and aim to improve efficient and sustainable production of nutritious beef. The vast majority of production costs are directly tied to feed. With increased demand for grains to feed a rapidly increasing world population and to supply a new demand for alternative fuels, feed costs continue to increase. In recent years, the negative environmental impacts of inefficient feeding have also been realized; as such feed efficiency is an important factor in both economic viability and environmental sustainability of cattle production. Feed Efficiency in the Beef Industry covers a broad range of topics ranging from economic evaluation of feed efficiency to the physiological and genetic bases of efficient conversion of feed to high quality beef. Chapters also look at how a fuller understanding of feed efficiency is leading to new selective breeding efforts to develop more efficient cattle. With wide-ranging coverage from leading international researchers, Feed Efficiency will be a valuable resource for producers who wish to understand the complexities, challenges, and opportunities to reduce their cost of production, for students studying the topic and for researchers and professionals working in the beef industry.
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (319 download)
Download or read book Water Quality in U.S. Feedlots written by and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas H Spreen
Publisher : CRC Press
ISBN 13 : 1000239616
Total Pages : 269 pages
Book Rating : 4.0/5 (2 download)
Download or read book Simulation Of Beef Cattle Production Systems And Its Use In Economic Analysis written by Thomas H Spreen and published by CRC Press. This book was released on 2019-07-11 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Economic analysis of beef cattle production has been limited by the inability to fully describe the underlying production process. Except for confined feeding of cattle, beef cattle production is the process of growing cattle who consume forages. The animal and the forage possess attributes of both factors and products of production. The production of forage constitutes one production process, animal growth is another production process, and reproduction by female animals is a third production process. Cattle production involves all three processes in such a manner that each influences the outcome of the other. Each process is itself complex and analysis is further complicated when all three are considered simultaneously.
Author : Ronald Earl Silcox
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (743 download)
Download or read book Predicting Feed Efficiency of Beef Bulls from Other Measurements written by Ronald Earl Silcox and published by . This book was released on 1980 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sidney Walter Reginald Cox
Publisher : Brill Wageningen Academic
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.:/5 (89 download)
Download or read book Precision Livestock Farming '05 written by Sidney Walter Reginald Cox and published by Brill Wageningen Academic. This book was released on 2005 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Precision Livestock Farming presents the latest scientific results from worldwide research, field studies and practical application. The book contains peer-reviewed papers that were presented at the 2nd European Conference on Precision Livestock Farming.The major topics in the book are animal welfare; food quality (including traceability of origin) and environmental pollution (including treatment of animal waste). The wide range of research topics reported will be a valuable resource for researchers, advisors, teachers and professionals in agriculture long after the conference has finished."
Author : Colin G. Scanes
Publisher : CRC Press
ISBN 13 : 1351648136
Total Pages : 509 pages
Book Rating : 4.3/5 (516 download)
Download or read book Biology of Domestic Animals written by Colin G. Scanes and published by CRC Press. This book was released on 2017-09-01 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is increasing interest in the biology of domestic animals ranging from genomics, transcriptomics, metabolomics, nutritional physiology, and systems biology. This book touches on all of these, with a particular focus on topics such as domestic animals as comparative models to humans, molecular regulation of growth, metabolic efficiency, reproduction, and the impact of stress on growth and development. The book concludes with a discussion on the current and future directions for researchers.
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:
