Environmental and Nutritional Effects on Beef Tenderness in Texas

Environmental and Nutritional Effects on Beef Tenderness in Texas
Author: Jody Lynea Peach
Publisher:
Total Pages:
Release: 2003
Genre:
ISBN:

Effects of three environments and their native or rye pasture forage systems on subsequent carcass characteristics, composition, and meat palatability were examined following grain feeding. Calves (F2 Angus x Bos indicus) with similar pre-weaning management and genetics were randomly assigned to one of eight treatments (McGregor-Calf; McGregor-Low; Uvalde-Low; Uvalde-High; Overton-Low, Rotational; Overton-Low, Continuous; Overton-High, Rotational; and Overton-High, Continuous). After approximately five months of grazing, cattle in forage groups were transported to McGregor and finished on a corn-milo ration to visually assessed 10 mm fat thickness. Longissimus muscle sections were randomly assigned into aging periods of 1, 7, 14, 21, 28, or 35 days and two-2.54 cm steaks were removed per section for Warner-Bratzler shear force and trained sensory analysis. After grazing, steers fed diets designed to produce higher rates of gain weighed more than steers at the same location fed diets designed for lower rates of gain. Within the high nutrition treatments, Uvalde-High steers had a lower average daily gain than steers in the Overton-High treatments. Differences in environment and nutritional treatments induced differences in rate of gain during the stocker phase. All forage treatment groups increased average daily gain in the feedlot phase. After the feedlot phase, steers varied in live weight due to treatment. Nutritional/environmental treatments affected ribeye area; kidney, pelvic and heart fat; and hot carcass weight, but not final yield grade. Treatment had minimal affects on quality grade characteristics. There was no affect by treatment on Warner-Bratzler shear force or sensory panel perception of myofibrillar tenderness, connective tissue amount, overall tenderness, or overall flavor intensity. Storage day affected shear force; steaks were toughest at 1 and 7 days of storage with shear force values decreasing after 7 days of storage. There was no interaction between environmental/nutritional treatment and storage day. Juiciness and cook loss were affected by treatment (P=0.0001). Overall, environment and nutrition had little impact on eating quality. Despite differences in average daily gain, it appears that steers may be fed forage diets followed by grain feeding to a similar fat thickness endpoint and produce steaks that are similar in palatability to grain-fed steers.

Designing Foods

Designing Foods
Author: National Research Council
Publisher: National Academies Press
Total Pages: 384
Release: 1988-02-01
Genre: Medical
ISBN: 0309037956

This lively book examines recent trends in animal product consumption and diet; reviews industry efforts, policies, and programs aimed at improving the nutritional attributes of animal products; and offers suggestions for further research. In addition, the volume reviews dietary and health recommendations from major health organizations and notes specific target levels for nutrients.

Current Advances in Meat Nutritional, Sensory and Physical Quality Improvement

Current Advances in Meat Nutritional, Sensory and Physical Quality Improvement
Author: Mohammed Gagaoua
Publisher: MDPI
Total Pages: 236
Release: 2020-04-24
Genre: Science
ISBN: 3039286900

Within the idea and objective of bringing together original studies dealing with the continuum aspects of meat, i.e., from farm to fork, this book grouped papers on the study of the nutritional, sensory, and technological aspects of carcass, muscle, meat, and meat-product qualities. This nook highlights a great part of the research activities in the field of meat science. A total of 14 original studies and one comprehensive review were edited within five main topics: (i) production systems and rearing practices, (ii) prediction of meat quality, (iii) statistical approaches for meat quality prediction/management, (iv) muscle biochemistry and proteomics techniques, and (v) consumer acceptability, development, and characterization of meat products.

Meat Quality

Meat Quality
Author: PhD, Wieslaw Przybylski
Publisher: CRC Press
Total Pages: 463
Release: 2015-10-15
Genre: Technology & Engineering
ISBN: 1498766676

One of the biggest challenges faced by meat producers today is the requirement to improve the quality of meat while maintaining focus on efficiency and higher yields. Numerous studies have shown that consumers are willing to pay premiums for meat products with guaranteed eating quality. This book examines the complicated multistep process of produc

Feed Efficiency in the Beef Industry

Feed Efficiency in the Beef Industry
Author: Rodney A. Hill
Publisher: John Wiley & Sons
Total Pages: 328
Release: 2012-09-11
Genre: Science
ISBN: 0470959525

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.

Quality and Grading of Carcasses of Meat Animals

Quality and Grading of Carcasses of Meat Animals
Author: S. Morgan Jones
Publisher: CRC Press
Total Pages: 246
Release: 2020-07-24
Genre: Technology & Engineering
ISBN: 1000141659

Three main factors affect the quality and composition of meat in farm animals. Production conditions determine the composition of the meat, while marketing and postmortem periods have a major bearing on the visual appearance and ultimate eating experience for the consumer. It is often difficult to compare research results from different countries since meat quality is assessed by a wide variety of procedures. Quality and Grading of Carcasses of Meat Animals reviews the development of commercial grading or classification schemes on a world-wide basis, and it provides a broad outline of the most common subjective and objective procedures for the assessment of meat quality. The book provides reviews on: Ante- and post-mortem effects on meat quality Reducing fatness in meat animals Prediction of carcass composition and meat quality World carcass and grading systems Electronic identification of animals