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Kansas Agricultural Experiment Station Research Reports

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Wheat Variety Test Results For South Central Kansas - 2021, J. Seiler, R. Hein, R. Flaming, J. Carr, K. Nordyke, R. Lollato, B. C. Pedreira Jan 2022

Wheat Variety Test Results For South Central Kansas - 2021, J. Seiler, R. Hein, R. Flaming, J. Carr, K. Nordyke, R. Lollato, B. C. Pedreira

Kansas Agricultural Experiment Station Research Reports

South central Kansas is an important winter wheat production area in the state. This report summarizes the results of winter wheat variety tests for 2020-2021 in five locations.


Evaluation Of Differing Genetic Potentials On Beef Cattle Resource Use In The Great Plains, A. D. Lakamp, D. G. Aherin, R. L. Larson, I. A. Ciampitti, C. J. Kopsa, R. L. Weaber, J. M. Bormann, M. M. Rolf Jan 2022

Evaluation Of Differing Genetic Potentials On Beef Cattle Resource Use In The Great Plains, A. D. Lakamp, D. G. Aherin, R. L. Larson, I. A. Ciampitti, C. J. Kopsa, R. L. Weaber, J. M. Bormann, M. M. Rolf

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to examine the environmental impact and efficiencies of beef cattle with differing genetic potentials in the Great Plains.

Study Description: A 100-head cow-calf herd was simulated for 74 different land regions and six combinations of genetic potential within regions: large, moderate, or small mature size and high (24.2 lb/day) or low (17.6 lb/day) milk production. The simulation determined the average amount of feed required to maintain the herd. Land, water, and methane production were estimated for each combination of land use area and genetic potential. Weaning weight was estimated ...


Bunk Space Requirements For Growing Beef Cattle Limit-Fed A High-Energy Corn And Corn Co-Product Diet, Z. M. Duncan, Z. L. Debord, M. G. Pflughoeft, K. J. Suhr, W. R. Hollenbeck, K C. Olson, D. A. Blasi Jan 2022

Bunk Space Requirements For Growing Beef Cattle Limit-Fed A High-Energy Corn And Corn Co-Product Diet, Z. M. Duncan, Z. L. Debord, M. G. Pflughoeft, K. J. Suhr, W. R. Hollenbeck, K C. Olson, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of our experiment was to evaluate the effects of bunk allotment on performance of growing beef calves during a 58-day receiving period and investigate possible residual effects of bunk-space allotment on subsequent growth performance during a 90-day grazing season.

Study Description: A group of 385 crossbred steers (initial weight 473 ± 56 lb) were purchased in Texas and transported to the Kansas State University Beef Stocker Unit. Calves were blocked by arrival date, assigned to one of four bunk space treatments (i.e., 10, 15, 20, or 25 in of bunk per head), and limit-fed a high-energy corn ...


A Limit-Fed, High-Energy Diet Fed During The Growing Phase Does Not Negatively Affect Subsequent Feedlot Growth Performance Or Carcass Merit Compared To Feeding A Traditional Roughage-Based Diet Ad Libitum During The Growing Phase, M. A. Scilacci, E. C. Titgemeyer, S. P. Montgomery, T. J. Spore, A. J. Tarpoff, T. G. O'Quinn, K. Montgomery, W. R. Hollenbeck, D. A. Blasi Jan 2022

A Limit-Fed, High-Energy Diet Fed During The Growing Phase Does Not Negatively Affect Subsequent Feedlot Growth Performance Or Carcass Merit Compared To Feeding A Traditional Roughage-Based Diet Ad Libitum During The Growing Phase, M. A. Scilacci, E. C. Titgemeyer, S. P. Montgomery, T. J. Spore, A. J. Tarpoff, T. G. O'Quinn, K. Montgomery, W. R. Hollenbeck, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this experiment was to compare the subsequent growth performance and carcass impacts of a high-energy diet limit-fed at 2.2% of body weight (BW) or a traditional roughage-based diet fed ad libitum during the growing phase.

Study Description: Three hundred seventy crossbred heifers (initial BW = 496 ± 44 lb) previously used in a 90-day growing study at the Kansas State University Beef Stocker Unit were transported to a commercial feedlot (Pratt Feeders, Pratt, KS) for finishing where cattle were fed a common diet. The two backgrounding diets included: (1) 45 Mcal of net energy for gain (NEg ...


Impact Of Disclosing Fat Content On Consumer Sensory Evaluation Of Ground Beef From A Similar Source, K. R. Lybarger, K. M. Harr, E. S. Beyer, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn Jan 2022

Impact Of Disclosing Fat Content On Consumer Sensory Evaluation Of Ground Beef From A Similar Source, K. R. Lybarger, K. M. Harr, E. S. Beyer, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine the impact of providing consumers with information regarding the fat content of ground beef on the consumer’s eating experience.

Study Description: Ground beef chubs that were 80% lean/20% fat (n = 15/panel type) were obtained, and 0.25-lb patties were fabricated from the chubs. Chubs were assigned randomly to panels. Panelists received samples labeled as the following: 90% lean/10% fat (90/10), 80% lean/20% fat (80/20), 73% lean/27% fat (73/27), lean, extra lean, and one sample with no information given (NONE). Samples were evaluated ...


Changes In The Perception Of Ground Beef Quality As A Result Of Primal Labeling, L. A. Egger, K. M. Harr, E. S. Beyer, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn Jan 2022

Changes In The Perception Of Ground Beef Quality As A Result Of Primal Labeling, L. A. Egger, K. M. Harr, E. S. Beyer, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine the effect of providing primal source information to consumers prior to consumption on palatability ratings of ground beef from the same source.

Study Description: Ground beef chubs that were 80% lean and 20% fat (n = 15) were used for testing. Samples were served to consumers as 0.25 lb patties that were cooked internally to 160°F. Consumers were asked to evaluate and assess different palatability traits and evaluated samples identified as ground chuck, ground round, ground sirloin, and store ground along with a sample that offered no information.

Bottom Line ...


An Investigation On The Influence Of Various Biochemical Tenderness Factors On Eight Different Bovine Muscles, P. A. Hammond, C. K. Chun, W. Wu, A. A. Welter, T. G. O'Quinn, G. Magnin-Bissel, E. Geisbrecht, M. D. Chao Jan 2022

An Investigation On The Influence Of Various Biochemical Tenderness Factors On Eight Different Bovine Muscles, P. A. Hammond, C. K. Chun, W. Wu, A. A. Welter, T. G. O'Quinn, G. Magnin-Bissel, E. Geisbrecht, M. D. Chao

Kansas Agricultural Experiment Station Research Reports

Objective: Beef tenderness is a complex palatability trait with many tenderness-contributing components. The objective of this study is to understand the relative contribution of each tenderness component to eight different beef muscles.

Study Description: Top sirloin butt, ribeye, brisket, flank, knuckle, eye of round, mock tender, and shoulder clod were collected from 10 U.S. Department of Agriculture high choice beef carcasses and assigned to a 2- or 21-day aging period (n = 160). Protein degradation, collagen content, mature collagen crosslink density, intramuscular lipid content, pH, shear force, and trained sensory panel analysis were determined. A Pearson correlation analysis was used ...


Using Cover Crops To Control Weeds And Improve Soil Health, J. Dille, A. Hewitt, G. Sassenrath Jan 2022

Using Cover Crops To Control Weeds And Improve Soil Health, J. Dille, A. Hewitt, G. Sassenrath

Kansas Agricultural Experiment Station Research Reports

Herbicide-resistant weeds are challenging for producers to control in crop fields. This study explores the potential of cover crops to reduce weed pressure and improve soil health. Cover crops that had good canopy development, including grasses such as ryegrass and wheat, had the best weed control. Soybean yields were similar for all cover crops, though there was a trend towards lower yields for the brassica cover crops, Graza radish and forage collards. Soybeans grown after ryegrass had the highest yields.


Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 2, J. K. Farney, M. Frahm, S. Strnad, T. Bottorff Jan 2022

Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 2, J. K. Farney, M. Frahm, S. Strnad, T. Bottorff

Kansas Agricultural Experiment Station Research Reports

Sixty-four growing steers were used in a split-plot experiment, where the whole plot was pasture, and the split-plot was the implant level. Whole plot treatment was a 4 × 2 factorial with four levels of fescue (High Endophyte, Low Endophyte, Novel, or Endophyte Free) and two levels of legume (Legumes or No Legumes). The split-plot included four implant levels (No Implant, Synovex One Grass, Revalor-G, or Ralgro). Data collected were weights, hair coat scores, hair length, rectal temperature (every 28 days), and ultrasound carcass characteristics when steers were coming off grass. Steers on High Endophyte had the lowest average daily gain ...


Evaluation Of Grazing Options During Summer For Growing Heifers – Year 2, J. K. Farney Jan 2022

Evaluation Of Grazing Options During Summer For Growing Heifers – Year 2, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Developing methods to provide high quality forage through most of the year is important for cattle operations. The purpose of this study was to determine forage management options to offset the summer “slump” with fescue. Four grass pasture treatments (10 pastures total; 4 acres each) were used in a completely randomized design and stocked with growing heifers (n = 49; initial wt 473 ± 60 lb). Pasture treatments consisted of novel fescue (FES), crabgrass (CRAB), bermudagrass (BERM), and sorghum-sudan interseeded into novel fescue (SS-FES). Heifers were weighed and grazed pastures from April to September (153 d). Heifers on FES were continuously grazed ...


Crop Production Summary - 2021, G. Sassenrath, L. Mengarelli, J. Lingenfelser, M. Knapp, X. Lin Jan 2022

Crop Production Summary - 2021, G. Sassenrath, L. Mengarelli, J. Lingenfelser, M. Knapp, X. Lin

Kansas Agricultural Experiment Station Research Reports

Soybean and corn varieties were tested in replicated field trials at the Southeast Research and Extension Center in Parsons through the Kansas State University variety testing program. In total, 26 corn varieties and 28 soybean varieties were tested. Weather during 2021 was near average for both rainfall and temperature, though there were periods of high rainfall and high temperatures. Corn and soybean production was also near average, both across the state and in the cultivar trials at Parsons.


Inclusion Of Biuret With Or Without Bovatec In A Commercial Mineral Supplement Did Not Improve Growth Performance Of Yearling Calves Grazing Native Grass: Year 1 Of 2, M. G. Pflughoeft, Z. M. Duncan, Z. L. Debord, K. J. Suhr, W. R. Hollenbeck, F. K. Brazle, A. J. Tarpoff, K C. Olson, D. A. Blasi Jan 2022

Inclusion Of Biuret With Or Without Bovatec In A Commercial Mineral Supplement Did Not Improve Growth Performance Of Yearling Calves Grazing Native Grass: Year 1 Of 2, M. G. Pflughoeft, Z. M. Duncan, Z. L. Debord, K. J. Suhr, W. R. Hollenbeck, F. K. Brazle, A. J. Tarpoff, K C. Olson, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this experiment was to measure the effects of non-protein nitrogen (NPN; biuret) or NPN + ruminal modifier (biuret + Bovatec, Zoetis, Parsippany, NJ) inclusion in a commercial mineral mix on growth performance of yearling beef calves grazing in the Kansas Flint Hills.

Study Description: Three hundred ninety-five crossbred steers (initial body weight: 612 ± 77.8 lb) of Texas origin previously backgrounded at the Kansas State University Beef Stocker Unit were used. Three mineral treatments consisting of a basal supplement (control), a basal supplement plus NPN (biuret), and a basal supplement plus NPN and lasalocid (Bovatec) were provided with ...


Effects Of Prescribed Fire Timing On Stocker Cattle Performance And Native Plant Composition: Year 3 Of 6, Z. M. Duncan, A. J. Tajchman, M. P. Ramirez, J. Lemmon, K. J. Suhr, W. R. Hollenbeck, D. A. Blasi, K C. Olson Jan 2022

Effects Of Prescribed Fire Timing On Stocker Cattle Performance And Native Plant Composition: Year 3 Of 6, Z. M. Duncan, A. J. Tajchman, M. P. Ramirez, J. Lemmon, K. J. Suhr, W. R. Hollenbeck, D. A. Blasi, K C. Olson

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this experiment was to document the effects of prescribed-fire timing on stocker cattle performance, soil cover, and plant species composition over a six-year period.

Study Description: Yearling stocker cattle were assigned to one of three prescribed-burn treatments: spring (April 9 ± 5.1 days), summer (August 23 ± 4.9 days), or fall (September 29 ± 8.7 days). Calves were grazed from May to August for 90 days. Individual body weights (BW) were recorded at the beginning and end of the grazing season to determine total BW gains and average daily gains. Native plant composition and soil cover ...


Effect Of Holstein And Beef-Dairy Cross Breed Description On The Sale Price Of Feeder And Weaned Calf Lots Sold Through Video Auctions, E. D. Mccabe, M. E. King, K. E. Fike, K. G. Odde Jan 2022

Effect Of Holstein And Beef-Dairy Cross Breed Description On The Sale Price Of Feeder And Weaned Calf Lots Sold Through Video Auctions, E. D. Mccabe, M. E. King, K. E. Fike, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective: Objectives were to determine: 1) value of Holstein feeder steer lots compared with steer lots of other breed descriptions, 2) value of beef-dairy cross weaned steer calves compared with either Holstein weaned calves or weaned calves of other breed descriptions, and 3) value of beef-dairy cross weaned calves compared with weaned calves of other beef breed descriptions sold through video auctions.

Study Description: Data on 14,075 feeder steer lots sold in 211 auctions from 2010 through 2018; 763 weaned steer calf lots, and 1,125 weaned steer and heifer calf lots sold via seven auctions in 2020 and ...


Challenges Associated With Semen Quality While Collecting Beef Bulls For Semen Freezing, A. R. Hartman, N. M. Goodenow, S. K. Tucker, K. E. Fike, D. M. Grieger Jan 2022

Challenges Associated With Semen Quality While Collecting Beef Bulls For Semen Freezing, A. R. Hartman, N. M. Goodenow, S. K. Tucker, K. E. Fike, D. M. Grieger

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to evaluate the frequency of failure to freeze semen due to semen quality.

Study Description: Semen collection data from 2008 to 2018 were obtained from the Kansas Artificial Breeding Services Unit and consisted of 14,750 ejaculates from bulls. Bulls were collected twice weekly on Mondays and Thursdays with an artificial vagina. Bulls not receptive to the artificial vagina were subject to electro-ejaculation. A single technician was responsible for all pre-freeze and post-thaw semen analysis. Ejaculates were required to meet quality standards for both progressive motility and morphology.

Results: Over the ten years ...


Field Trial Assessing The Use Of Sex-Sorted Semen In Beef Cattle, K. W. Aubuchon, J. A. Odde, C. Bronkhorst, E. M. Bortoluzzi, M. J. Goering, K. E. Fike, K. G. Odde Jan 2022

Field Trial Assessing The Use Of Sex-Sorted Semen In Beef Cattle, K. W. Aubuchon, J. A. Odde, C. Bronkhorst, E. M. Bortoluzzi, M. J. Goering, K. E. Fike, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective: The objective was to evaluate the reproductive performance of sex-sorted semen on beef cows and heifers.

Study Description: For this trial, 320 Angus and SimAngus cows and heifers from four groups were used. Group 1 yearling heifers (n = 101) were synchronized using the melengestrol acetate plus prostaglandin F (MGA-PGF) protocol and Groups 2, 3, and 4 cows (n = 219) were synchronized using the 7-Day CO-Synch + CIDR protocol. Insemination was done with semen from an Angus sire (Group 1 yearling heifers and Group 2 young cows) sorted to contain >90% X-bearing sperm, or a Charolais sire (Groups 3 ...


Effects Of Betaine On Protein Deposition In Growing Cattle With Modulated Methyl Group Status, M. S. Grant, J. M. Marsh, K. J. Hazlewood, M. D. Miesner, E. C. Titgemeyer Jan 2022

Effects Of Betaine On Protein Deposition In Growing Cattle With Modulated Methyl Group Status, M. S. Grant, J. M. Marsh, K. J. Hazlewood, M. D. Miesner, E. C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Objective: This study was conducted to evaluate effects of guanidinoacetic acid and creatine supplementation in the presence or absence of supplemental betaine on lean tissue growth in growing cattle.

Study Description: Seven ruminally cannulated Holstein steers (417 lb) were used in an experiment where each steer received each of six treatments. The first treatment set was conducted via abomasal infusion of a saline solution (control), 15 g/day guanidinoacetic acid (GAA), or 16.8 g/day creatine, and the second set was conducted via abomasal infusion of 0 or 5.6 g/day betaine; all treatment combinations were represented. Complete ...


Syngenta Enogen Corn Fed As Corn Grain And Corn Silage In Diets Containing Corn Coproducts Did Not Enhance Diet Digestibility In Growing Heifers, M. A. Scilacci, M. A. Johnson, E. C. Titgemeyer, S. P. Montgomery, A. J. Tarpoff, E. D. Watson, W. R. Hollenbeck, D. A. Blasi Jan 2022

Syngenta Enogen Corn Fed As Corn Grain And Corn Silage In Diets Containing Corn Coproducts Did Not Enhance Diet Digestibility In Growing Heifers, M. A. Scilacci, M. A. Johnson, E. C. Titgemeyer, S. P. Montgomery, A. J. Tarpoff, E. D. Watson, W. R. Hollenbeck, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: Evaluate the effect of feeding corn grain and corn silage from Enogen corn (EC; Syngenta Seeds, LLC., Downers Grove, IL) or conventional corn (CON) in diets containing either wet distillers grain (WDG; ICM Biofuels, St. Joseph, MO) or Sweet Bran [proprietary wet corn gluten feed (WCGF); Cargill Animal Nutrition, Blair, NE] on intake and digestibility in growing cattle.

Study Description: Eight ruminally cannulated crossbred heifers (initial body weight = 816 ± 94 lb) were used in an intake and digestibility study designed as a replicated 4 × 4 Latin square. Four consecutive, 15-day periods consisted of 10 days for diet adaptation, 4 ...


Impact Of Disclosing Labeling Information On Consumer Sensory Evaluation Of Ground Beef From A Similar Source, K. M. Harr, E. S. Beyer, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn Jan 2022

Impact Of Disclosing Labeling Information On Consumer Sensory Evaluation Of Ground Beef From A Similar Source, K. M. Harr, E. S. Beyer, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine the effect of providing labeling information prior to evaluation on consumers’ palatability ratings of ground beef from a similar source.

Study Description: Ground beef (80% lean/20% fat) from a similar source was obtained and fabricated into 0.25 lb patties. Patties were fed to consumers who evaluated each sample for different palatability traits. Consumers (n = 105) were informed about the labeling information of each sample prior to evaluation. Labels utilized: all natural, animal raised without added antibiotics (WA), animal raised without added hormones (WH), fresh never frozen (FNF), grass-fed, locally ...


Effect Of Ruminally-Protected Lysine Supplementation To Growing Cattle On Growth And Subsequent Finishing Performance, K. J. Hazlewood, M. S. Grant, D. A. Blasi, G. A. Ducharme, E. C. Titgemeyer Jan 2022

Effect Of Ruminally-Protected Lysine Supplementation To Growing Cattle On Growth And Subsequent Finishing Performance, K. J. Hazlewood, M. S. Grant, D. A. Blasi, G. A. Ducharme, E. C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to evaluate the effects of ruminally-protected lysine supplementation fed during the growing phase to cattle limit-fed a corn-based diet, and to evaluate the subsequent finishing performance.

Study Description: For 77 days, a group of 338 steers limit-fed at 2.4% of body weight daily on a dry matter basis were allocated to treatments providing 0, 3, or 6 g/day of lysine from Smartamine ML (Adisseo, Alpharetta, GA), or containing blood meal plus ruminally-protected methionine from Smartamine M. Growth performance was measured over the growing period. Cattle were then shipped to a commercial ...


Trained Sensory Panel Evaluation Of The Impact Of Bone-In Versus Boneless Cuts On Beef Palatability, K. J. Farmer, E. S. Beyer, S. G. Davis, K. M. Harr, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn Jan 2022

Trained Sensory Panel Evaluation Of The Impact Of Bone-In Versus Boneless Cuts On Beef Palatability, K. J. Farmer, E. S. Beyer, S. G. Davis, K. M. Harr, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine palatability traits of beef cuts of differing bone status and quality grade.

Study Description: Paired (n = 12 pairs; 24 total/cut/grade) boneless ribeye rolls, export ribs, and short loins were procured. Short loins were fabricated into boneless strip loins with corresponding bone-in tenderloins, or bone-in strip loins with boneless tenderloins. Post-aging, subprimals were fabricated into steaks that were randomly selected for further analysis. A total of 18 trained sensory panels were conducted at the Kansas State University Meat Science Sensory Lab to determine differences in palatability traits.

Results: In totality ...


Native Beef Collagenase Mmp-9 May Contribute To Tenderness Improvement By Degrading Connective Tissues In Extended Aged Beef, L. A. Koulicoff, A. A. Welter, P. A. Hammond, C. K. Chun, T. G. O'Quinn, G. Magnin-Bissel, M. D. Chao Jan 2022

Native Beef Collagenase Mmp-9 May Contribute To Tenderness Improvement By Degrading Connective Tissues In Extended Aged Beef, L. A. Koulicoff, A. A. Welter, P. A. Hammond, C. K. Chun, T. G. O'Quinn, G. Magnin-Bissel, M. D. Chao

Kansas Agricultural Experiment Station Research Reports

Objective: Collagen is one of the main components in the connective tissue (CT) and contributes to background toughness in beef. It is known that in living animals, collagen can be degraded and remodeled by collagenase matrix metalloproteinases (MMP); however, it is unclear if collagenase MMP can impact CT texture during postmortem aging of beef. Therefore, this study aimed to understand how collagenase MMP activity may impact postmortem connective tissue degradation in beef in three different cuts and four different aging periods.

Study Description: Beef boneless striploin, top sirloin butt, and heel were acquired from 10 U.S. Department of Agriculture ...


Exploring The Potential Effect Of Phospholipase A2 Antibody To Extend Beef Shelf-Life In A Beef Liposome Model System, C. K. Chun, R. Welti, M. Roth, M. P. Richards, M. D. Chao Jan 2022

Exploring The Potential Effect Of Phospholipase A2 Antibody To Extend Beef Shelf-Life In A Beef Liposome Model System, C. K. Chun, R. Welti, M. Roth, M. P. Richards, M. D. Chao

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to utilize a beef liposome model system to investigate if phospholipase-A2 antibody (aPLA2) can be used to inhibit phospholipase-A2 (PLA2) activity to potentially improve beef shelf-life.

Study Description: Phospholipids (PL) from 10 U.S. Department of Agriculture choice beef striploin steaks were extracted and split into six treatments: PL (25 mg of PL); aPLA10 (PL + 25 µg of aPLA2); aPLA20 (PL + 50 µg of aPLA2); PLA2 (PL + 10 µg of PLA2); PLA2+aPLA10 (PL + PLA2 + aPLA10); and PLA2+aPLA20 (PL + PLA2 + aPLA20). The model system was under retail display at 39 ...


Changes In The Perception Of Ground Beef Quality As A Result Of Price Per Pound Labeling, E. S. Beyer, K. M. Harr, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn Jan 2022

Changes In The Perception Of Ground Beef Quality As A Result Of Price Per Pound Labeling, E. S. Beyer, K. M. Harr, K. J. Farmer, S. G. Davis, M. D. Chao, J. L. Vipham, M. D. Zumbaugh, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine the effect of perceived palatability on ground beef patties by providing consumers with differing price per pound labels.

Study Description: Ground beef chubs (n = 15) of 80% lean/20% fat composition were used for all samples. Patties were formed 11 days after processing into 0.25 lb patties using a commercial patty former.

Samples were cooked to 160°F and served to consumers to determine different quality attributes. Consumers were given the following prices for each sample: Ultra-High - $6.25/lb; High - $5.00/lb; Medium - $3.75/lb; Low - $2 ...


Effect Of Feeding Interval On Finishing Performance Of Beef Steers, Chance Fiehler, John Jaeger, Justin Waggoner, Keith Harmoney, K.C. Olson Jan 2022

Effect Of Feeding Interval On Finishing Performance Of Beef Steers, Chance Fiehler, John Jaeger, Justin Waggoner, Keith Harmoney, K.C. Olson

Kansas Agricultural Experiment Station Research Reports

It has long been accepted that optimal performance in beef cattle occurs when cattle are fed at a similar time each day. In fact, in Frederick Mumford’s Syllabus of Illustrated Lecture on Profitable Cattle Feeding published by the U.S. Department of Agriculture in 1905, Mr. Mumford stated, “Cattle should be fed at certain hours and in the same way. This cannot be varied 15 minutes without some detriment to the cattle.” Little research has been conducted examining interval of feed delivery. Most feedlot research examining feed delivery has focused on the comparison of once or twice daily feed ...


Vegetation And Animal Production In Pastures Sprayed For Western Ragweed Control, Keith Harmoney, John Jaeger Jan 2022

Vegetation And Animal Production In Pastures Sprayed For Western Ragweed Control, Keith Harmoney, John Jaeger

Kansas Agricultural Experiment Station Research Reports

Western ragweed (Ambrosia psilostachya) is a common native forb found throughout Kansas native rangelands and in some seeded pastures. Over time, western ragweed can form dense colonies from growth of lateral creeping rootstalks with multiple buds that can initiate new growth and form an upright stem and plant. Past research has shown that western ragweed does not compete with native grass production until ragweed contributes over approximately 35% of the forage dry matter of a pasture area. Cattle have utilized western ragweed in past long-term historical grazing trials. In a previous long-term trial at Hays, KS, western ragweed was the ...


Herbicide Activity On Old World Bluestems, Keith Harmoney Jan 2022

Herbicide Activity On Old World Bluestems, Keith Harmoney

Kansas Agricultural Experiment Station Research Reports

Two main species of old world bluestems (OWB), yellow bluestem (Bothriochloa ischaemum) and Caucasian bluestem (Bothriochloa bladhii), have encroached on rangelands, pastures, and road right-of-ways in Kansas. Patches of these OWB have been shown to reduce species diversity and abundance at multiple trophic levels, and pose a long-term threat to native plant, insect, rodent, and grassland bird populations. These OWB species are utilized by cattle early in the growing season, directly following prescribed burns, and during droughts when other forages lack water uptake and may go dormant. However, these OWB species mature more quickly than native grass species and quickly ...


Cattlemen's Day 2022, Beef Cattle Research Jan 2022

Cattlemen's Day 2022, Beef Cattle Research

Kansas Agricultural Experiment Station Research Reports

This report includes research on beef cattle management, reproduction, nutrition, and meat science conducted at Kansas State University.


Reclaiming Old World Bluestem Pasture With Imazapyr Application And Native Grass Overseeding, Keith Harmoney Jan 2022

Reclaiming Old World Bluestem Pasture With Imazapyr Application And Native Grass Overseeding, Keith Harmoney

Kansas Agricultural Experiment Station Research Reports

Old world bluestems (OWB), mainly Caucasian bluestem (Bothriochloa bladhii) and yellow bluestem (Bothriochloa ischaemum) introduced from parts of eastern Europe, Asia, Africa, and Australia, have been shown to reduce abundance and diversity of some insect and wildlife species compared to native grasses when these OWB grasses form dense stands. These OWBs have been invading native pastures in the southern Great Plains and are rapidly increasing in the amount of area occupied in Kansas. Two landowners purchased pasture property in Ellsworth County, KS, and observed that Caucasian old world bluestem had increased in the pasture significantly over the course of several ...


The Effects Of Intensive Early Stocking And Early Weaning On The Onset Of Puberty And Reproductive Success In Beef Replacement Heifers, Chance Fiehler, John Jaeger, Justin Waggoner, Keith Harmoney, K.C. Olson Jan 2022

The Effects Of Intensive Early Stocking And Early Weaning On The Onset Of Puberty And Reproductive Success In Beef Replacement Heifers, Chance Fiehler, John Jaeger, Justin Waggoner, Keith Harmoney, K.C. Olson

Kansas Agricultural Experiment Station Research Reports

Management practices utilizing genetics, nutrition, and growth have commonly been studied to maximize the lifetime productivity of female beef cattle. However, heifers managed to have their first calf by 24 months of age have the greatest chance of achieving maximum lifetime productivity.

One way for a heifer to calve by 24 months of age is to decrease the age at which she reaches puberty. Heifers reaching puberty 1 to 3 months before exposure to breeding maximized conception success, as was shown when heifers bred during their third estrus were 21% more likely to conceive than heifers that were bred during ...