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Kansas Agricultural Experiment Station Research Reports

2008

2008; Kansas Agricultural Experiment Station contribution; no. 08-212-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 995; Beef; Cattle; Marbling; Vitamin A

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Restricting Vitamin A In Cattle Diets Improves Beef Carcass Marbling And Usda Quality And Yield Grades (2008), A.M. Arnett, M.J. Daniel, Michael E. Dikeman Jan 2008

Restricting Vitamin A In Cattle Diets Improves Beef Carcass Marbling And Usda Quality And Yield Grades (2008), A.M. Arnett, M.J. Daniel, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Marbling continues to be a major factor affecting profitability for beef producers, processors, retailers, and restaurateurs. However, feeding animals to "˜fatten' is quite inefficient, requiring about 2.25 times more energy than is needed for producing lean muscle. For the cattle feeding industry to be sustainable in the future, increases in marbling must be accomplished without increasing days on feed, slaughter age carcass weight, and fatness and without sacrificing feed efficiency and carcass cutability. A 2002 survey of feedlot nutritionists revealed that most recommended supplementation of vitamin A to feedlot cattle at levels exceeding the guidelines of the National Research Council …


Vitamin A Restriction During Finishing Benefits Beef Retail Color Display Life (2008), M.J. Daniel, A.M. Arnett, Michael E. Dikeman Jan 2008

Vitamin A Restriction During Finishing Benefits Beef Retail Color Display Life (2008), M.J. Daniel, A.M. Arnett, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Because the beef industry commonly uses marbling as an indicator of meat palatability, determining the most cost effective methods of increasing quality grade in cattle is a high priority. Previous research showed that weaning calves at around 90 instead of 200 days of age can be beneficial in reducing cow production costs and increasing marbling in feedlot steers. Other studies demonstrated that high levels of vitamin A inhibit development of intramuscular fat. Vitamin A restriction is used commonly in Japanese cattle to increase marbling scores; this stimulated interest in applying this restriction in U.S. beef production systems. However, little research …