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Full-Text Articles in Life Sciences

More: How To Do More With More In 2022, Harriet E. Watkins, Jacquelyn Cato Apr 2022

More: How To Do More With More In 2022, Harriet E. Watkins, Jacquelyn Cato

38th Academic Chairpersons Conference Proceedings

In 2022 we are dealing with new academic realities. This presentation will investigate current faculty concerns and explore the ways academic coaches assist faculty and put the personal touch in online courses necessary to support and enhance the student experience. Providing the ability to scale and save on instructional costs.


Transposon- And Genome Dynamics In The Fungal Genus Neurospora: Insights From Nearly Gapless Genome Assemblies, Diem Nguyen, Valentina Peona, Per Unneberg, Alexander Suh, Patric Jern, Hanna Johannesson Feb 2022

Transposon- And Genome Dynamics In The Fungal Genus Neurospora: Insights From Nearly Gapless Genome Assemblies, Diem Nguyen, Valentina Peona, Per Unneberg, Alexander Suh, Patric Jern, Hanna Johannesson

Fungal Genetics Reports

A large portion of nuclear DNA is composed of transposable element (TE) sequences, whose transposition is controlled by diverse host defense strategies in order to maintain genomic integrity. One such strategy is the fungal-specific Repeat-Induced Point mutation (RIP) that hyper-mutates repetitive DNA sequences. While RIP is found across Fungi, it has been shown to vary in efficiency. The filamentous ascomycete Neurospora crassa has been a pioneer in the study of RIP, but data on TEs and RIP from other species in the genus is limited. In this study, we investigated 18 nearly gapless genome assemblies of ten Neurospora species, which ...


Influence Of Message Theme On Consumer Perceptions Of Lab Grown Meat, Kellie Kubacak, Courtney Meyers, Hannah L. Ford, Nan Li, Lindsay Kennedy Feb 2022

Influence Of Message Theme On Consumer Perceptions Of Lab Grown Meat, Kellie Kubacak, Courtney Meyers, Hannah L. Ford, Nan Li, Lindsay Kennedy

Journal of Applied Communications

Lab grown meat is a new technology being developed as a potential alternative protein source. Although some research has been done about public perception of lab grown meat, no studies to date have observed the effects of message themes on public perception of lab grown meat. The study sought to better understand measures of uncertainty and risk and benefit perceptions after viewing a themed blog post about lab grown meat. Participants were randomly assigned one of three themed blog posts - against lab grown meat, neutral, or support lab grown meat. Perception questions were asked after viewing the blog post, and ...


Characteristics And Motivational Factors Of American Equine Journalists, Zoe B. Bowden, Ricky W. Telg, Lisa K. Lundy Feb 2022

Characteristics And Motivational Factors Of American Equine Journalists, Zoe B. Bowden, Ricky W. Telg, Lisa K. Lundy

Journal of Applied Communications

The purpose of this study was to identify the demographic characteristics, career motivations, and professional development of American equine journalists. An online survey was distributed to equine journalists identified through their professional organizational membership. Descriptive statistics were used to analyze the data. Equine journalists were found to be predominately female, Caucasian, and averaged 53 years old. Nearly half were exposed to the equine industry prior to their career and have been working in the industry for over 15 years. Respondents were well educated and were most motivated towards their career as an equine journalist because of their interest in horses ...


Three Mini-Ethnographic Case Studies On Covid: Impacts On Greek Agricultural Sectors, Kim E. Dooley, Evangelos Vergos, Kyriaki Zinoviadou, Konstantinos Rotsios Jan 2022

Three Mini-Ethnographic Case Studies On Covid: Impacts On Greek Agricultural Sectors, Kim E. Dooley, Evangelos Vergos, Kyriaki Zinoviadou, Konstantinos Rotsios

Journal of International Agricultural and Extension Education

COVID was politically polarizing, had global and public health impacts, and created havoc in supply chains. Social dilemmas caused by the pandemic were difficult, but also created opportunities to be resilient and innovative in agricultural extension education. This mini-ethnographic case study examined three Greek agricultural sectors from the perspectives of experts in extension and higher education. Data included semi-structured interviews, review of technical reports, and photographs in developing each case study. From the cross-case analysis, there were four emerging themes: environmental, economic, and social impacts and the innovative solutions used to address these concerns. What we have learned, and where ...


Higher Education Leadership Development During The Covid-19 Pandemic: An Exploration Of Online Learner Readiness, Kevan W. Lamm, Alyssa Powell, L. Rochelle Sapp, Alexa Lamm Jan 2022

Higher Education Leadership Development During The Covid-19 Pandemic: An Exploration Of Online Learner Readiness, Kevan W. Lamm, Alyssa Powell, L. Rochelle Sapp, Alexa Lamm

Journal of International Agricultural and Extension Education

The COVID-19 pandemic precipitated profound disruptions across the higher education sector as institutions were forced to restructure entire systems and operate with significantly reduced resources. Most notably, many institutions were forced to transition to fully virtual instruction. The present study examined adult leadership development program participants’ perceptions of online learning readiness during the transition to a fully virtual training environment precipitated by the COVID-19 pandemic. A census of the 2020 LEAD21 class was taken, and perceptions of online learning readiness were collected via a retrospective pre- and post-test. Descriptive and inferential statistics were used. Respondents had the highest levels of ...


Training, Trust, And Technology: A Mixed-Methods Study Of Latin American Extension Workers’ Experiences During Covid-19, Pablo Lamiño Jaramillo, Amy Boren-Alpizar, Sarahi Morales Vanegas, Carla Millares-Forno Jan 2022

Training, Trust, And Technology: A Mixed-Methods Study Of Latin American Extension Workers’ Experiences During Covid-19, Pablo Lamiño Jaramillo, Amy Boren-Alpizar, Sarahi Morales Vanegas, Carla Millares-Forno

Journal of International Agricultural and Extension Education

The COVID-19 pandemic has drastically affected people's lives around the world, including agricultural extension workers. To date, few studies have been conducted to understand the adaptation of extension services in Latin American countries during the pandemic. This mixed-methods study explored Latin-American extension professionals’ preparation to implement knowledge-sharing activities and sought to understand extension professionals' responsiveness to COVID-19. The results revealed significant differences in extension responsiveness, between field extension workers and in-office extension workers. Delving into this difference revealed that field extension professionals perceived lower responsiveness because they were not able to continue their pre-pandemic, face-to-face activities in the field ...


It’S Who We Are: New Approaches, Supported By Evidence, Jack Elliot, Jessica R. Spence, Ignacie Tumushime, Meikah Dado, Ana Casas, Olawunmi Ilesanmi, Megan Gould, Mathilde Le Bon Jan 2022

It’S Who We Are: New Approaches, Supported By Evidence, Jack Elliot, Jessica R. Spence, Ignacie Tumushime, Meikah Dado, Ana Casas, Olawunmi Ilesanmi, Megan Gould, Mathilde Le Bon

Journal of International Agricultural and Extension Education

This issue poses the question, “Where do we go from here?” Agricultural and extension educators are well equipped to grow, reimagine, and improve our work. First, we go to our foundational training and educational background and apply those key principles in a new contextual setting.

1) Although we never left the country, we built a virtual study abroad using Kolb’s model (1984) of experiential learning to incorporate all four phases into our VHIE teaching and learning process. 2) Creating the SPS Policy Framework for Africa introduced our team to the Continental SPS Committee, which provided credibility to conduct two ...


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.


Effects Of Late Summer Prescribed Fire On Botanical Composition, Soil Cover, And Forage Production In Caucasian Bluestem-Infested Rangeland In The Kansas Smoky Hills: Year 3 Of 4, M. P. Ramirez, A. J. Tajchman, Z. M. Duncan, J. Lemmon, K C. Olson Jan 2022

Effects Of Late Summer Prescribed Fire On Botanical Composition, Soil Cover, And Forage Production In Caucasian Bluestem-Infested Rangeland In The Kansas Smoky Hills: Year 3 Of 4, M. P. Ramirez, A. J. Tajchman, Z. M. Duncan, J. Lemmon, K C. Olson

Kansas Agricultural Experiment Station Research Reports

Objective: The objective was to document the effects of late-summer prescribed fire on soil cover, botanical composition, and forage production in the Kansas Smoky Hills and associated effects on dense Caucasian bluestem (Bothriochloa bladhii) stands therein.

Study Description: The study took place on a private ranch in Ellsworth County, in the Kansas Smoky Hills. Eighteen one-acre plots were assigned randomly to one of two prescribed-fire treatments: no burn (control) and burn (burned August 14, 2019). Soil cover, plant composition, and forage production were evaluated annually. These data represent plant community effects prior to treatment and one and two years subsequent ...


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 ...


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

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

Kansas Agricultural Experiment Station Research Reports

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

Study Description: Three hundred eighty-four crossbred heifers [initial body weight (BW) = 582 ± 42 lb] were used in a completely randomized design, 81-day receiving and growing study, with a 2 × 2 factorial arrangement of four dietary treatments. Experimental diets were formulated to contain 30% WDG or ...


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 ...


Comparison Of Sensitivity To Fusarium Head Blight In Soft Red And Hard Red Winter Wheat Varieties, G. Sassenrath, K. Andersen Onofre, J. Lingenfelser, X. Lin Jan 2022

Comparison Of Sensitivity To Fusarium Head Blight In Soft Red And Hard Red Winter Wheat Varieties, G. Sassenrath, K. Andersen Onofre, J. Lingenfelser, X. Lin

Kansas Agricultural Experiment Station Research Reports

Fusarium head blight (scab) is a problem for wheat production in high rainfall areas. This is a report of research examining the response of wheat varieties on disease susceptibility and wheat yield and quality. Hard red wheat varieties had more disease than the soft red wheat varieties in 2021. Wheat yield was correlated with disease severity.


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 ...


Comparison Of Finishing Cattle On Self-Feeder Or Total-Mixed Ration, J. K. Farney Jan 2022

Comparison Of Finishing Cattle On Self-Feeder Or Total-Mixed Ration, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Corn-finished cattle are the backbone of the US beef production system. Traditionally cattle are fed a total-mixed ration (TMR) where all feed ingredients are mixed together, delivered, and fed daily to cattle. Previous research evaluated complete self-fed finishing rations where the diet is placed into a self-feeder. With advancements in technology and varieties of corn, the purpose of this study was to determine the differences in finishing cattle gains, feed efficiency, carcass merit, and cost of production on a TMR ration as compared to a self-fed finishing ration. Thirty-five steers and heifers were sorted into 8 pens and assigned to ...


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.


Feed Efficiency Is Better And Activity Is Greater In Growing Cattle Limit-Fed A High-Energy Diet During The Growing Phase Compared To A Traditional Roughage-Based Diet Fed For Ad Libitum Intake, M. A. Scilacci, E. C. Titgemeyer, S. P. Montgomery, T. J. Spore, A. J. Tarpoff, T. G. O'Quinn, W. R. Hollenbeck, D. A. Blasi Jan 2022

Feed Efficiency Is Better And Activity Is Greater In Growing Cattle Limit-Fed A High-Energy Diet During The Growing Phase Compared To A Traditional Roughage-Based Diet Fed For Ad Libitum Intake, M. A. Scilacci, E. C. Titgemeyer, S. P. Montgomery, T. J. Spore, A. J. Tarpoff, T. G. O'Quinn, W. R. Hollenbeck, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

The objective of this experiment was to compare performance impacts of a high-energy diet limit-fed at 2.2% of body weight (BW) daily on a dry matter (DM) basis to a traditional roughage-based diet fed for ad libitum intake during the growing phase.

Study Description: Three hundred seventy crossbred heifers (initial BW = 496 ± 44 lb) were used in a receiving and growing study at the Kansas State University Beef Stocker Unit in the spring of 2020. Animals were fed once daily at 7:00 a.m. Bunks were visually observed, and feed refused was estimated. Ad libitum feed refusal was ...


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 ...


Digestibility Of Dry Matter Is Better And Manure Output Is Lower In Growing Cattle Limit-Fed A High-Energy Diet During The Growing Phase Compared To A Traditional Roughage-Based Diet Fed For Ad Libitum Intake, M. A. Scilacci, E. Titgemeyer, S. P. Montgomery, T. J. Spore, A. J. Tarpoff, T. G. O'Quinn, W. R. Hollenbeck, D. A. Blasi Jan 2022

Digestibility Of Dry Matter Is Better And Manure Output Is Lower In Growing Cattle Limit-Fed A High-Energy Diet During The Growing Phase Compared To A Traditional Roughage-Based Diet Fed For Ad Libitum Intake, M. A. Scilacci, E. Titgemeyer, S. P. Montgomery, T. J. Spore, A. J. Tarpoff, T. G. O'Quinn, W. R. Hollenbeck, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: Evaluate the impact on intake and digestion of a high-energy diet limit-fed at 85% of the ad libitum daily consumption of a roughage-based diet on a dry matter (DM) basis compared to a traditional roughage-based growing diet in growing cattle.

Study Description: Eight ruminally cannulated crossbred Angus heifers (body weight = 450 ± 24 lb) were used in a cross-over design with two consecutive 15-day periods at the Kansas State University Beef Stocker Unit. Two dietary treatments were fed: (1) 45 Mcal of net energy for gain (NEg) per 100 lb of DM fed for ad libitum DM intake (45AL ...


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 ...