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Instagram As A Tool Of Diffusion For The Livestock Industry, Savannah Locke, Karen Hiltbrand, Katie Corbitt, Darcey Richburg, David Shannon, Soren P. Rodning, Jason T. Sawyer, Don Mulvaney

Journal of Applied Communications

Studies have shown that more people are getting their information through social media (SM). With so much misinformation presented in global media, it is difficult for consumers to distinguish what is true and what isn’t. With negative images and minimal context, consumers have a tendency to believe and trust what they see on SM. After IRB approval, a survey study was launched on Qualtrics and accessed via email. Using Instagram as platform, this study presented 5 cognitively and 5 emotionally oriented posts focused on the aspects of animal welfare, diet/health, and environment/sustainability. Prior to viewing the Instagram posts, study participants …

Impact Of A Study Abroad Course In Helping Undergraduate Students Affirm Their Career Aspirations To Become Veterinarians: A Qualitative Inquiry, Jose M. Uscanga, M. Craig Edwards, J. Shane Robinson, Rob Terry Jr., Udaya Desilva

Journal of International Agricultural and Extension Education

Twenty-five students who participated in a study abroad course tailored to veterinary medicine during the summer of 2019 were the study’s sources of data. Using photovoice and phenomenology research methods, we sought to explore, understand, and interpret the impact of a study abroad course on pre-vet students’ views regarding veterinary medicine and their aspirations to become veterinarians. Students perceived that veterinary medicine in Mexico was structured differently from the U.S. approach and the nation’s socioeconomic and agroclimatology conditions impacted the delivery of veterinary care and affected the work settings and practice of veterinarians. They not only discerned the uniqueness of …

Evaluation Of Specialty Soybean Products And Organic Acids To Alter Nursery Dietary Acid-Binding Capacity-4 On Pig Performance And Fecal Dry Matter, Ethan B. Stas, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 300 pigs (241 × 600, DNA; initially 12.4 lb) were used to evaluate specialty soybean products and organic acids to alter the acid-binding capacity-4 (ABC-4) level of the diet on nursery pig performance and fecal dry matter (DM). At weaning, pigs were allotted to 1 of 6 dietary treatments. Diet 1 was formulated with 12.0% specialty soy protein concentrate (AX3 Digest; Protekta; Plainfield, IN), 1.06% citric acid, and 0.5% fumaric acid to achieve an ABC-4 of 223 meq/kg. Diets 2 and 3 were the same as diet 1 except citric and fumaric acid were reduced by 50 …

Dietary Acid-Binding Capacity-4 Influences Nursery Pig Performance And Fecal Dry Matter, Ethan B. Stas, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 360 pigs (200 × 400 DNA; initially 12.9 lb) were used to evaluate the impact of increasing the acid-binding capacity-4 (ABC-4) of the diet on nursery pig performance and fecal dry matter (DM). At weaning, pigs were allotted to 1 of 6 dietary treatments. There were 5 pigs per pen and 12 replications per treatment. Pigs were fed experimental diets in two phases with phase 1 being from d 0 to 10 post-weaning followed by phase 2 from d 10 to 23. Diets were formulated with increasing ABC-4 levels ranging from 150 meq/kg (diet 1, low ABC-4) …

Foreword, Swine Day 2023

Kansas Agricultural Experiment Station Research Reports

This file includes the 2023 Swine Day Research Report introduction, standard abbreviations, K-State Vitamin and Trace Mineral Premixes statement, biological variability and chances of error explanation, and acknowledgments of our supporters. We hope that the information in the 2023 Swine Day Research Report will be of benefit as we attempt to meet the needs of the Kansas swine industry.

2023 Southeast Research And Extension Center Agricultural Research Report, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

The 2023 Southeast Research and Extension Center Agricultural Research report includes research conducted in the areas of beef cattle management, cropping systems, and forage crops. Topics include various grazing and nutrient input for steers and heifers; wheat, soybean, and corn production practices and results, as well as soil health practices; and burning and nutrient practices along with efforts for improvement of native and tall fescue range grasses.

Effects Of Almond Hull Inclusion On Growth Performance Of Limit-Fed Growing Cattle, Z. M. Duncan, Z. L. Debord, M. G. Pflughoeft, K. J. Suhr, W. R. Hollenbeck, F. K. Brazle, E. C. Titgemeyer, K. C. Olson, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective:The objective of this experiment was to evaluate the effects of almond hull inclusion and almond hull processing on growth performance of limit-fed growing beef cattle during a 56-day growing period.

Study Description:A total of 364 steers were assigned to one of four diets. The control diet contained (dry matter basis) 39.5% dry-rolled corn, 7.5% supplement, 40% wet-corn gluten feed, and 13% prairie hay. Almond hulls replaced prairie hay or prairie hay and dry-rolled corn and were fed at 13 and 26% of the diet, respectively. A subset of almond hulls was processed using a grinder mixer with …

Evaluation Of Bovine Myosin Heavy Chain Isoforms And Muscle Fiber Cross-Sectional Area On The Eating Quality Of 11 Different Beef Muscles, S. Hene, H. Ness, E. Verrill, P. A. Hammond, C. K. Chun, T. G. O'Quinn, M. D. Chao

Kansas Agricultural Experiment Station Research Reports

Objective:The objective of this study was to investigate the contribution of muscle fiber type and size on the eating quality of 11 different beef muscles.

Study Description:Eleven different beef muscles were utilized from two separate studies. In study 1, shoulder clod, flank, knuckle, mock tender, top sirloin butt, brisket, eye of round, and ribeye were collected from 10 U.S. Department of Agriculture choice carcasses (n = 80), and each muscle was fabricated into steaks at 2 days postmortem. In study 2, strip loin, tri-tip, and heel were collected from 10 USDA low choice carcasses (n = 30). Myofibrillar …

Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 3, Jaymelynn K. Farney, Larissa Muniz, Harley Allen

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 and ultrasound carcass characteristics when steers were coming off grass. Steers on High Endophyte had a lower average daily gain (ADG) and final weight than steers on novel endophyte, …

Effects Of Zinc Source And Level In Low Abc-4 Diets On Nursery Pig Growth Performance And Fecal Characteristics, Jonathan Riedmüller, Jamil E. G. Faccin, Alessandra R. Monteiro, JüRgen Zentek, Joel M. Derouchey, Jordan T. Gebhardt, Robert D. Goodband, Jason C. Woodworth, Mike D. Tokach

Kansas Agricultural Experiment Station Research Reports

A total of 360 weanling barrows (DNA 200 × 400; initially 13.0 ± 0.07 lb) were used in a 38-d study to evaluate the effects of diets containing different levels of a novel Zn source (HiZox, Animine Precision Minerals, Annecy, France) and different levels of crude protein (CP) in low acid-binding capacity at pH 4 (ABC-4) diets on growth performance and fecal characteristics. Pigs were randomly assigned to pens (5 pigs per pen) and pens were assigned to 1 of 6 treatments with 12 pens per treatment. Diets were fed in 3 phases: phase 1 from d 0 to 10, …

Effects Of Folic Acid On Nursery Pig Growth Performance And Serum Homocysteine, Larissa L. Becker, Jordan T. Gebhardt, Mike D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 350 barrows (DNA 200 × 400; initially 13.2 ± 0.12 lb) were used in a 38-d growth study to determine the effects of folic acid on nursery pig growth performance and blood measurements. Pigs were weaned at approximately 21 d of age and randomly allotted to 1 of 5 dietary treatments in a completely randomized design. A total of 70 pens were used with 5 pigs per pen and 14 replications per treatment. Dietary treatments were corn-soybean meal-based and consisted of increasing folic acid: 0, 5, 10, 20, or 40 ppm. Treatment diets were fed in three …

Determining The Phosphorus Release Curve For Sunphase Ht Phytase From 250 To 2,000 Ftu/Kg In Nursery Pig Diets, Ty H. Kim, Katelyn N. Gaffield, Mike D. Tokach, Joel M. Derouchey, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt, Ying Zhou, Xuerong Song, Xiuyi Wu, Mikhail Y. Golovko, Svetlana A. Golovko

Kansas Agricultural Experiment Station Research Reports

A total of 280 pigs (DNA 241 × 600; initially 22.9 ± 0.52 lb BW) were used in a 21-d growth study to determine the available P (aP) release curve for Sunphase HT phytase (Wuhan Sunhy Biology Co., Ltd.; Wuhan, P.R. China). At approximately 19 d of age, pigs were weaned, randomly allotted to pens, and fed common starter diets. Pigs were blocked by average pen body weight (BW) and randomly allotted to 1 of 7 dietary treatments on d 21 post-weaning, considered d 0 of the study. Dietary treatments were derived from a single basal diet, and ingredients including …

Evaluating The Effects Of Hiphorius Phytase Added In Diets At Or Below The P Requirement On Nursery Pig Growth Performance And Bone Mineralization, Macie E. Reeb, Jason C. Woodworth, Joel M. Derouchey, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Jon R. Bergstrom

Kansas Agricultural Experiment Station Research Reports

A total of 297 pigs (DNA 241 × 600; initially 8.64 ± 0.181 kg) were used in a 21-d trial to determine the effects of HiPhorius phytase on growth performance and bone characteristics. Pens of pigs were assigned to 1 of 5 treatments in a randomized complete block design with 5 pigs per pen and 12 replications per treatment. The first three diets were formulated to contain 0.09% aP; without added phytase (control), or the control diet with 600 or 1,000 FYT/kg of added phytase (considering a release of 0.15 or 0.18% aP, respectively). The remaining two diets were formulated …

Effects Of Various Modified Corn Protein Inclusion Rates On Nursery Pig Growth Performance, Rafe Q. Royall, Ty H. Kim, Jason C. Woodworth, Mike D. Tokach, Joel M. Derouchey, Jordan T. Gebhardt, Robert D. Goodband, Keith Mertz, John F. Patience

Kansas Agricultural Experiment Station Research Reports

This experiment was conducted to determine the optimum feeding strategy of a modified corn protein product (MCP; P4000; Cargill Starches, Sweeteners, & Texturizers, Blair, NE) on growth performance and fecal dry matter of nursery pigs. A total of 360 barrows (DNA 200 × 400; initially 12.0 ± 0.14 lb) were used in a 42-d growth trial. Pigs were weaned at approximately 21 d of age, randomly allotted to pens in 1 of 2 weight blocks based on initial BW (initially 10.8 and 13.2 lb), and then allotted to 1 of 6 dietary treatments in a completely randomized design. There were …

Evaluation Of Lactose Level Intake And Whey Permeate Form On Nursery Pig Performance, Ethan B. Stas, Jason W. Frank, Tingting Wang, Joel M. Derouchey, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 1,512 pigs (Line 337 × 1050 PIC; initially 10.4 lb) were used to evaluate lactose level and whey permeate form on nursery pig performance in a commercial environment. Pigs were weaned at approximately 19 d of age and were allotted to 1 of 4 dietary treatments arranged in a 2 × 2 factorial utilizing low or high lactose levels with either granular whey permeate (Dairylac 80, International Ingredients Corporation, Fenton, MO) or spray-dried whey permeate. There were 27 pigs per pen and 14 replications per treatment. Pigs were fed experimental diets in two phases with phase 1 …

Effects Of Standardized Ileal Digestible Tryptophan To Lysine Ratio On Growth Performance Of Pic Line 337 × 1050 Pigs, Rafe Q. Royall, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt, Carine M. Vier, Matthew Spindler, Uislei Orlando, Luis Zaragoza, Ning Lu, Wayne Cast, Danielle F. Wilson-Wells, Julia P. Holen, Alyssa M. Betlach

Kansas Agricultural Experiment Station Research Reports

The objective of these experiments was to evaluate the impact of varying SID Trp:Lys ratios on growth performance, removals, and mortality rates of PIC 337 × 1050 finishing pigs. In each experiment, pens of pigs were blocked by BW and randomly assigned to 1 of 5 dietary treatments in a randomized complete block design with 22 to 27 pigs per pen and 6 or 7 replications per treatment. In Exp. 1, 840 pigs (initially 101.2 ± 2.08 lb) were used from 101 to 161 lb. In Exp. 2, 801 pigs (initially 219.8 ± 3.44 lb) were used from 220 to …

Determining The Impact Of Probicon L28 And Bioplus 2b On Finishing Pig Growth Performance And Carcass Characteristics, Macie E. Reeb, Jimeng Bai, Mike D. Tokach, Jordan T. Gebhardt, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jessie L. Vipham, Qing Kang, John W. Schmidt, Dayna M. Brichta-Harhay, Morgan Miller, Sara E. Gragg

Kansas Agricultural Experiment Station Research Reports

These data represent the growth performance of pigs enrolled in a study to determine the impact of two direct fed microbial products onSalmonellaandEscherichiacoli prevalence pre- and post-harvest. A total of 650 finishing pigs in two groups were randomly assigned to pen via a completely randomized design, and pens were assigned to one of three treatments: 1) a control treatment with pigs fed a standard corn-soybean meal finishing diet (with no added probiotic); 2) the control diets with Probicon L28 (NexGen Innovations, LLC, Lubbock, TX) supplemented through water lines using a water medicator system at a target …

Effect Of Sulfate Or Hydroxychloride Forms Of Zinc, Manganese, And Copper On Growth Performance, Weight Variation, Carcass Characteristics, And Economics Of Grow-Finish Pigs, Hilario M. Cordoba, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Mike D. Tokach, Jordan T. Gebhardt, Chris P.A. Van De Ligt

Kansas Agricultural Experiment Station Research Reports

A total of 1,026 grow-finish pigs (337 × 1050 PIC; initially 57.2 ± 0.73 lb) were used in a 124-d trial to compare sulfate and hydroxychloride forms of Zn, Mn, and Cu on growth performance, carcass characteristics, weight variation, and economics of grow-finish pigs. Pigs were housed in mixed gender pens with 27 pigs per pen and 19 pens per treatment. The treatments were structured as a completely randomized design and consisted of a control diet containing 150, 16, and 110 ppm of Cu, Mn, and Zn, respectively, from sulfate sources or the same inclusion provided by hydroxychloride sources. Experimental …

Evaluating The Distribution Of Porcine Epidemic Diarrhea Virus, Porcine Reproductive And Respiratory Syndrome Virus, And Seneca Valley Virus 1 Inoculated Feed After The Use Of Physical Or Chemical Mitigants To Flush A Feed Manufacturing Facility, Olivia L. Harrison, Haley K. Otott, Jianfa Bai, Vaughn A. Hamill, Aaron Singrey, Phillip C. Gauger, Marcelo N. Almeida, Jason C. Woodworth, C. R. Stark, Roman M. Pogranichniy, Cassandra K. Jones, Jordan T. Gebhardt, Chad B. Paulk

Kansas Agricultural Experiment Station Research Reports

Contaminated feed is a route of virus transmission between feed mills and swine farms. To reduce the risk of transmission, an understanding of the virus distribution and mitigation strategies are needed. The objective of this study was to evaluate the distribution of porcine epidemic diarrhea virus (PEDV), porcine reproductive and respiratory syndrome virus (PRRSV), and Seneca Valley virus 1 (SVV1) inoculated feed in the environment and feed of a feed mill before and after the use of chemical mitigants. A 50-lb batch of feed was run through a mixer and bucket elevator followed by a batch inoculated with PEDV, PRRSV, …

Understanding The Reduction Of Porcine Epidemic Diarrhea Virus, Porcine Reproductive And Respiratory Syndrome Virus, And Seneca Valley Virus 1 Rna In Inoculated Feed And The Environment Following Thermal Processing, Olivia L. Harrison, Haley K. Otott, Jianfa Bai, Vaughn A. Hamill, Aaron Singrey, Phillip C. Gauger, Marcelo N. Almeida, Jason C. Woodworth, Charles R. Stark, Roman M. Pogranichniy, Cassandra K. Jones, Jordan T. Gebhardt, Chad B. Paulk

Kansas Agricultural Experiment Station Research Reports

Pelleting of feed has been demonstrated to be an effective mitigation strategy for porcine epidemic diarrhea virus (PEDV) contaminated feed but has not been evaluated for other endemic swine viruses like porcine reproductive and respiratory syndrome virus (PRRSV) or Seneca Valley virus 1 (SVV1). Therefore, the objective of this experiment was to evaluate the efficacy of pelleting to inactivate PEDV, PRRSV, and SVV1 inoculated feed. Ten replicates were conducted in the Cargill Feed Safety Research Center at Kansas State University (K-State) using a pilot scale mixer, bucket elevator, pellet mill (including conditioner and die), and cooler. First, a virus negative …

The Effect Of Live Yeast Probiotics In Lactation Diets With And Without A Yeast Prebiotic In Nursery Diets On Lifetime Growth Performance, Antibody Titers, And Carcass Characteristics, Abigail K. Jenkins, Joel M. Derouchey, Jordan T. Gebhardt, Jason C. Woodworth, Mike D. Tokach, Robert D. Goodband, Joseph A. Loughmiller, Brian T. Kremer

Kansas Agricultural Experiment Station Research Reports

A total of 28 mixed parity sows (Line 241 DNA) and their offspring were used in a farrow-to-finish study to evaluate the effect of live yeast supplementation during lactation with or without yeast extract supplementation during the nursery period on sow and litter performance and lifetime growth performance, serum antibody titers, and carcass characteristics. Sows were blocked by parity and BW on d 110 of gestation and allotted to 1 of 2 dietary treatments which consisted of a standard corn-soybean meal lactation diet with or without yeast-based probiotics (0.10% Actisaf Sc 47 HR+; Phileo by Lesaffre, Milwaukee, WI). Following weaning, …

Effects Of Increasing Levels Of Soybean Meal In Nursery Diets On Growth Performance And Fecal Characteristics Of 22- To 60-Lb Pigs, Jamil E. G. Faccin, Robert D. Goodband, Mike D. Tokach, Joel M. Derouchey, Jordan T. Gebhardt, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effects of increasing soybean meal (SBM) on late nursery pig performance. In Exp. 1, a total of 266 pigs (241 × 600 DNA; initially 22.2 ± 0.37 lb) were used in a 21-d trial with 14 replicate pens per treatment and 4 to 5 pigs per pen. Pens of pigs were randomly assigned to 1 of 4 dietary treatments which were corn-based with SBM levels of 25.0, 28.9, 32.5, or 36.2%. In Exp. 2, a total of 340 pigs (241 × 600 DNA; initially 29.8 ± 0.40 lb) were used in a 21-d …

Evaluating Hiphorius Phytase In Two Diet Formulation Strategies On Finishing Pig Growth Performance, Serum Chemistry, Bone Mineralization, And Carcass Characteristics, Macie E. Reeb, Jason C. Woodworth, Joel M. Derouchey, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Jon R. Bergstrom

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effects of HiPhorius (DSM Nutritional Products, Parsippany, NJ) phytase on finishing pig growth performance, serum chemistry, bone mineralization, and carcass characteristics. In Exp. 1, 1,161 pigs (PIC 337 × 1050; initially 80.9. ± 1.06 lb) were used in a 105-d trial. There were 27 pigs per pen and 10 or 11 replications per treatment. Treatments consisted of: 1) Control diet with no added phytase and formulated to NRC (2012) requirement estimates for standard total tract digestible (STTD) P; 2) 600 FYT/kg added phytase formulated to the same STTD P as the control diet …

Consumer Sensory 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 and bone-in ribeye rolls, 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, subprimal cuts were fabricated into steaks that were randomly selected for further analysis. Consumer sensory panelists (n = 144) were recruited from Manhattan, KS, and the surrounding area and paid for their participation in the study. Panels were conducted …

Evaluation Of A Microencapsulated Form Of Zinc Oxide On Weanling Pig Growth Performance, Intestinal Morphology, And Zinc Excretion, Payton L. Dahmer, Franco S. Matias-Ferreyra, Cassandra K. Jones

Kansas Agricultural Experiment Station Research Reports

A total of 350 pigs (DNA 200 × 400; initially 13.31 ± 0.04 lb BW) were used in a 42-d study with 5 pigs per pen and 12 pens per treatment. At weaning, pigs were randomly allocated to pens and pens were randomly allotted to dietary treatments. Dietary treatments were: 1) negative control (standard nursery diet containing 110 ppm Zn from trace mineral premix); 2) control diet with 3,000 ppm added Zn in the form of ZnO in phase 1 and 2,000 ppm added Zn in the form of ZnO in phase 2 (High-ZnO); 3) control diet with 400 ppm …

Evaluation Of Anchovy Fish Meal With Or Without Added Fish Solubles On Nursery Pig Performance, Ethan B. Stas, Joel M. Derouchey, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 1,134 pigs (L337 × 1050 PIC; initially 10.4 lb) were used to evaluate anchovy fish meal with or without added fish solubles on nursery pig performance in a commercial environment. At weaning, pigs were allotted to 1 of 3 dietary treatments containing three different specialty protein sources added on an SID Lys basis. Dietary treatments consisted of a control diet containing enzymatically treated soybean meal at 7.0% of the diet, a diet containing 5.1% anchovy fish meal, and a diet containing 5.33% anchovy fish meal with added anchovy fish solubles. Pigs were fed experimental diets in phases …

Effects Of Increasing Alpha-Linolenic Acid On Growth Performance And Mortality Rate In Prrs-Virus Challenged Nursery Pigs, Jenna J. Bromm, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Josh R. Flohr, Raymond A. M. Schmitt, Jordan T. Gebhardt, Felipe Zarate

Kansas Agricultural Experiment Station Research Reports

A total of 91,140 weaned pigs, (DNA 600 × PIC 1050; initially 11.33 ± 0.62 lb) originating from PRRSV-positive sow farms, were used across 8 nursery sites to evaluate growth performance, total removal and mortality rate, and medication usage of nursery pigs fed diets containing 0 or 3% O3 Trial Feed (NBO3 Technologies LLC, Manhattan, KS), a source of omega-3 fatty acids. Each of the 8 sites contained 5 barns with 2 rooms in each barn. Rooms of pigs were blocked by nursery site and allocated by sow source to 1 of 2 dietary treatments. Thus, there were 40 groups …

Summary Of Methodology Used In Enterotoxigenic Escherichia Coli (Etec) Challenge Experiments In Weanling Pigs And Quantitative Assessment Of Observed Variability, Payton L. Dahmer, Joel M. Derouchey, Jordan T. Gebhardt, Chad B. Paulk, Cassandra K. Jones

Kansas Agricultural Experiment Station Research Reports

Post-weaning diarrhea in pigs can be caused by the F4 or F18 strains of enterotoxigenicEscherichia coli(ETEC). To evaluate interventions for ETEC, experimental infection via a challenge model is critical. To our knowledge, there is a lack of explanation for the variability in responses observed across ETEC challenge studies. Our objective was to quantitatively summarize the responses and variability among recent ETEC challenge studies and develop a tool for sample size calculation. The most widely evaluated response criteria across ETEC challenge studies are growth performance, fecal consistency and bacterial shedding, intestinal morphology, and immune responses. Factors that contribute to …

Effects Of Standardized Ileal Digestible Threonine To Lysine Ratio On Growth Performance Of Pic Line 337 × 1050 Pigs, Rafe Q. Royall, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt, Carine M. Vier, Matthew Spindler, Uislei Orlando, Luis Zaragoza, Ning Lu, Wayne Cast, Danielle F. Wilson-Wells, Julia P. Holen, Alyssa M. Betlach

Kansas Agricultural Experiment Station Research Reports

The objective of this research was to evaluate the impact of varying SID Thr:Lys ratios on growth performance, removals, and mortality rates of late-nursery, grower, and finishing PIC 337 × 1050 pigs. In each experiment, pens of pigs were blocked by BW and randomly assigned to 1 of 5 dietary treatments in a randomized complete block design with 19 to 27 pigs per pen and 8, 7, and 7 replications per treatment in Exp. 1, 2, and 3, respectively. In Exp. 1, 987 pigs (initially 26.0 ± 0.70 lb) were used from 26 to 54 lb. In Exp. 2, 875 …

Exploring The Use Of Probicon L28 And Bioplus 2b As Direct-Fed Microbials To Reduce Salmonella And Shiga Toxin-Producing Escherichia Coli In Market Pigs, Jimeng Bai, Macie E. Reeb, Mike D. Tokach, Jordan T. Gebhardt, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jessie L. Vipham, Qing Kang, John W. Schmidt, Dayna M. Brichta-Harhay, Joseph M. Bosilevac, Morgan Miller, Sara E. Gragg

Kansas Agricultural Experiment Station Research Reports

Pigs are hosts forSalmonellaand Shiga toxin-producingEscherichia coli(STEC) and these pathogens can commonly be isolated from the pig farm environment. Pigs can carry pathogens to the abattoir and contaminate pork products, posing a risk to public health. Identifying an intervention that effectively reduces pathogens in commercial pigs before harvest is imperative. Due to the need for effective pre-harvest interventions in the pig industry, the objective of this study was to investigate BIOPLUS 2B (Bacillus licheniformisandBacillus subtilis) and Probicon L28 (Lactobacillus salivariusL28) as pre-harvest interventions to reduceSalmonellaand STEC in commercial …