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Full-Text Articles in Life Sciences
Increased Concentrations Of Bovine Intestinal Mucus Encourage Growth Of Escherichia Coli O157:H7, J. Heidenreich, C. Aperce, James S. Drouillard
Increased Concentrations Of Bovine Intestinal Mucus Encourage Growth Of Escherichia Coli O157:H7, J. Heidenreich, C. Aperce, James S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Cattle have been implicated as carriers of the human pathogen Escherichia coli O157:H7. Contamination of the beef supply by E. coli O157 can occur during harvest and processing, causing costly recalls or human illness. Many interventions have been applied in attempts to prevent contamination of carcasses in processing plants, such as development of HACCP procedures, carcass washes, and steam pasteurization, but contaminations still occur. Mechanisms that allow E. coli O157:H7 to thrive in cattle at sporadic times and in such large numbers are poorly understood. Understanding factors that stimulate E. coli O157 growth in cattle will aid in identifying effective …
High Sulfur Content In Distillers Grains With Solubles May Be Deleterious To Beef Steer Performance And Carcass Quality, S. Uwituze, G.L. Parsons, C.J. Schneider, K.K. Karges, M.L. Gibson, Larry C. Hollis, James S. Drouillard
High Sulfur Content In Distillers Grains With Solubles May Be Deleterious To Beef Steer Performance And Carcass Quality, S. Uwituze, G.L. Parsons, C.J. Schneider, K.K. Karges, M.L. Gibson, Larry C. Hollis, James S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Distillers grains with solubles are becoming an increasingly important staple of cattle diets because of rapid expansion of the fuel ethanol industry. Sulfuric acid often is used in ethanol production processes to clean and control the pH of fermenters. Consequently, distillers grains with solubles can occasionally contain high sulfur concentrations. Within the rumen, sulfur is converted to hydrogen sulfide gas by ruminal microbes. Hydrogen sulfide is eructated from the rumen and subsequently aspirated into the lungs; excess amounts of hydrogen sulfide can cause polioencephalomalacia (brainers). Polioencephalomalacia is characterized by increased respiration, decreased feed intake, listlessness, muscular incoordination, progressive blindness, and …
Packaging Systems And Storage Times Serve As Post-Lethality Treatments For Listeria Monocytogenes On Kippered Beef Steaks, A. Lobaton-Sulabo, K. Uppal, Kelly J.K. Getty, Elizabeth A.E. Boyle, N. Harper, B. Barry, James J. Higgins
Packaging Systems And Storage Times Serve As Post-Lethality Treatments For Listeria Monocytogenes On Kippered Beef Steaks, A. Lobaton-Sulabo, K. Uppal, Kelly J.K. Getty, Elizabeth A.E. Boyle, N. Harper, B. Barry, James J. Higgins
Kansas Agricultural Experiment Station Research Reports
Following several outbreaks involving Listeria monocytogenes in ready-to-eat meat and poultry products, the United States Department of Agriculture Food Safety and Inspection Service required that processors of these products implement post-processing intervention strategies for controlling L. monocytogenes. The USDA defines a postlethality treatment as a process that reduces L. monocytogenes by at least 1 log. Research has shown that packaging can generate a 1 log L. monocytogenes reduction following 1 or more weeks of storage at room temperature. The objective of our study was to determine the effect of packaging system and storage time on reducing L. monocytogenes in shelf-stable …
Supplementing Feedlot Steers And Heifers With Zilmax Increases Proportions Of Strip Loin, Chuck Clod, And Top Sirloin Steaks Exceeding Warner-Bratzler Shear Force Thresholds, Whereas Aging Moderates This Effect, H.C. Claus, J.C. Brooks, J. Shook, G.G. Hilton, T.E. Lawrence, J.M. Mehaffey, B.J. Johnson, Dell M. Allen, M.N. Streeter, W.T. Nichols, C. Melvin, J. Killefer, Michael E. Dikeman
Supplementing Feedlot Steers And Heifers With Zilmax Increases Proportions Of Strip Loin, Chuck Clod, And Top Sirloin Steaks Exceeding Warner-Bratzler Shear Force Thresholds, Whereas Aging Moderates This Effect, H.C. Claus, J.C. Brooks, J. Shook, G.G. Hilton, T.E. Lawrence, J.M. Mehaffey, B.J. Johnson, Dell M. Allen, M.N. Streeter, W.T. Nichols, C. Melvin, J. Killefer, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Ractopamine hydrochloride (Elanco, Greenfield, IN) and Zilmax (zilpaterol hydrochloride; Intervet/Schering-Plough, Millsboro, DE) are β-adrenergic agonists approved in the United States and several other countries to increase growth rate, improve efficiency of feed utilization, and increase carcass meat yield. Zilmax has been shown to improve feed efficiency by 26% and increase hot carcass weight, longissimus muscle area, and meat yield. However, a few studies have shown that Zilmax significantly increased Warner-Bratzler shear force values (decreased tenderness). The objectives of our research were to determine the effects of supplementing feedlot diets of steers and heifers with Zilmax for 0, 20, 30, or …
Effect Of Nitrogen Supplementation On Urea Recycling In Steers Consuming Corn-Based Diets, D.W. Drake, M.L. Jones, David E. Anderson, Evan C. Titgemeyer
Effect Of Nitrogen Supplementation On Urea Recycling In Steers Consuming Corn-Based Diets, D.W. Drake, M.L. Jones, David E. Anderson, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Nitrogen absorbed in the small intestine of cattle can be recycled to the rumen and incorporated into microbially synthesized amino acids. This is an advantage when dietary protein is low or when ruminally available nitrogen is limited by poor ruminal protein degradation. In a survey, consulting feedlot nutritionists reported that 83% of their clients used ethanol coproducts in finishing diets. Ruminal availability of nitrogen in dried distillers grains with solubles is low (i.e., 25% of total nitrogen). Thus, urea recycling may be of greater relative importance when distillers grains are used to supplement protein to cattle. The goals of our …