Animal Science, Department of
Citation
2014 Nebraska Beef Cattle Report, University of Nebraska-Lincoln Extension, MP99 (2014).
Abstract
Contents:
Cow/Calf
Effect of Pubertal Status and Number of Estrous Cycles Prior to the Breeding Season on Pregnancy Rate in Beef Heifers .5
Comparison of Long-term Progestin-based Synchronization Protocols on Fixed-time AI pregnancy Rate in Beef Heifers . 8
Androgen Excess in Beef Cows Results in Altered Theca Cell Gene Expression and Fertility 11
Follicular Vascular Endothelial Growth Factor A Expression Before and After the LH Surge . 14
Evaluation of Genomic Predictors for Red Angus Cattle . 17
Preconception Distillers Grains Supplementation Improves Mature Beef Cow Return to Estrous . 19
Impact of Supplemental Protein Source on Pregnant Heifers 21
Effects of Winter Supplementation on Cow Performance and Post-Weaning Management on Steer and Heifer Progeny in a Late Spring Calving System 24
Effects of Calf Age at Weaning on Cow and Calf Performance and Efficiency in a Drylot/Confinement Production System 27
Growing
Effects of Forage Quality, MDGS, and Monensin on Performance, Methane Concentration, and Ruminal Fermentation of Growing Cattle 29
Energy Value of De-Oiled Modified Distillers Grains Plus Solubles in a Forage Based Diet . 32
Replacement of Grazed Forage and Animal Performance when Distillers Grains are Fed in a Bunk or on the Ground on Summer Range . 34
Effects of Winter Supplementation Level on Yearling System Profit Across Economic Scenarios . 36
Distillers Grains Supplementation in a Forage System with Spayed Heifers 39
Economics of Distillers Grains Supplementation in a Forage System with Spayed Heifers 43
Effect of Distillers Grains Plus Solubles Supplementation on Grazing Cattle Performance . 46
Effect of Distillers Grains Supplementation on Calves Grazing Irrigated and Non-irrigated Corn Residue . 48
Effects of Grazing on Nebraska Sandhills Meadow Forage Nutrient Content . 50
Forage Management and Crop Residue Utilization
Effect of Irrigation Allocation on Perennial Grass Production and Quality . 52
Dryland Cover Crops as a Grazing Option for Beef Cattle 56
Using Enspira™ to Improve Fiber Digestion . 59
Use of Treated Corn Residues in Growing Diets . 62
Use of a Pelleted Corn Residue Complete Feed in Receiving Diets . 64
Alkaline Treated Wheat Straw or Corn Stover Fed to Growing Calves . 67
Impact of Feeding Alkaline-treated Corn Stover at Elevated Amounts in Commercial Feedlot Cattle . 69
Optimum Inclusion of Alkaline Treated Cornstalks and Distillers Grains Fed to Calf-fed Steers . 72
Finishing
Transitioning Cattle from RAMp® to a Finishing Diet on Feed Intake and Ruminal pH 75
Transitioning Cattle from RAMp® to a Finishing Diet on Feedlot Performance and Feed Intake Variance . 78
Effects ofIncreasing Inclusion of Wet Distillers Grains Plus Solubles With and Without Oil Extraction on Finishing Performance . 81
Effects of a Terminal Sorting System with Zipaterol Hydrochloride on Feedlot Steers . 83
Evaluating Corn Condensed Distillers Solubles Concentration in Steam-Flaked Corn Finishing Diets on Cattle Performance and Carcass Characteristics . 86
Feeding Elevated Levels of Corn Silage and MDGS in Finishing Diets 88
Effects of Feeding NEXT ENHANCE® in Finishing Diets on Performance and Carcass Characteristics 90
Optimal Marketing Date of Steers Depends on Marketing Strategy . 92
Effect of Micro-Aid® Supplementation on Nitrogen Losses from Manure 97
Effects of Dietary Change on Viral-bacterial Interactions in the Rumen of Cattle . 99
Differences in Fecal Bacterial Community Composition between Beef Steers which are High-shedders and Low-shedders of Shiga Toxin-producing Escherichia coli (STEC) . 101
Beef Products
Shelf life of Cooked Ground Beef Patties from Cattle Fed Wet Distillers Grains with Solubles . 103
Effect of Feeding Different Types of By-products and Concentrations throughout a Beef Growing System on Ground Beef Color Lipid Oxidation . 105
Lipid Oxidation of Cooked Ground Beef Links from Cattle Fed Distillers Grains in Different Phases of Production 107
Effect of Natural Antioxidant Concentration on Lipid Oxidation of Ready-to-Eat Ground Beef Links from Cattle Fed Distillers Grains in Different Phases of Production . 109
Effects of Feeding Distillers Grains in a Yearling Beef System on Meat Quality . 111
Effect of Feeding De-oiled Wet Distillers Grains Plus Solubles on Beef Oxidation and Tenderness . 114
Effect of Feeding De-oiled Wet Distillers Grains Plus Solubles on Beef Fatty Acid Profiles 116
Nutrient and Tenderness Differences of Beeffrom Heifers Due to Mutation of the Myostatin Gene 119
Vein Steak Differences in Strip Loins of Heifers Due to Mutation of the Myostatin Gene . 121
The Effects of Diet and Cooler Aging on Specific Flavor Notes in Beef 123
Grass Type, Grazing Supplementation, and Finishing Diets Affect Beef Fatty Acids 126
The Effect of Diet on the Biochemical Constituents of Beef 129
The Effect of Diet and Cooler Aging on Consumer Panel Scores for Beef 133
Statistics Used in the Nebraska Beef Report and Their Purpose . 137
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Comments
Copyright 2014 University of Nebraska.
A complete (but encrypted) version is available at https://beef.unl.edu/nebeefreport2014