Life Sciences Commons^™

Transition Cow Metabolites And Physical Traits Influence Days To First Postpartum Ovulation In Dairy Cows, S. Banuelos, J. S. Stevenson

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to assess key metabolites and patterns of prepartum and postpartum physical activity as they relate to the onset of first postpartum ovulation in lactating dairy cows. Close-up dry Holstein cows (n = 82) and late gestation heifers (n = 78) were enrolled beginning 3 weeks before expected calving date (day 0). Cows were fit with Cow SensOor ear tags to assess transitional changes in eating, resting, rumination, activity, and ear-surface temperatures. Rectal temperatures were assessed and blood samples were collected on days 0, 3, 7, and 14 to measure concentrations of glucose, free fatty …

Development Of A Self-Emulsifying Adjuvant For Use In Swine Vaccines, Rachel Madera, Yulia Burakova, Lihua Wang, Jishu Shi

Kansas Agricultural Experiment Station Research Reports

Emulsion-based adjuvants are commonly used in animal vaccine formulations for several reasons including affordability, stability, and efficacy in inducing disease-protecting immune responses. Here we report a novel, cost-effective, stable, self-emulsifying adjuvant (SEA1) that is prepared by a simple low shear process or low-energy mixing without the use of expensive and complex proprietary equipment. Characterization of the SEA1 adjuvant showed good stability at different temperatures (4°C, 20°C, and 37°C) after one month of storage. Minimal changes in droplet size distribution, polydispersity index, Zeta potential and pH in 1-month-old SEA1 preparations were observed when compared with a fresh SEA1 preparation. SEA1 emulsion-based …

Effect Of Metabolizable Energy And Crumble Quality Of The Diet On Growth Performance Of Broilers, Nelsa M. Beckman, Khairy I. Jenkins, Allison K. Blomme, Haley K. Otott, Kara M. Dunmire, Charles R. Stark, Chad B. Paulk

Kansas Agricultural Experiment Station Research Reports

In order to optimize the growth performance of broilers, diets are formulated to a recommended ME concentration. In addition, broilers (chicks) are often fed diets in the form of crumbles in early production to improve growth performance. Thus, the objective of this study was to determine the effect of ME concentration in diets and if removal of crumble fines influenced the growth performance response of broilers. At hatch, a total of 300 one-day-old male broilers (Cobb 500, initial BW 0.093 lb) were used in an 18-day study. Broilers were housed in 3 Petersime batteries with ad libitum access to feed …

Southeast Research And Extension Center Agricultural Research 2022

Kansas Agricultural Experiment Station Research Reports

Report of agricultural research from Southeast Research and Extension Center, Kansas State University.

Impacts Of A Post-Transport/Pre-Processing Rest Period On The Growth Performance And Serum Metabolites Of Cattle Entering A Feedlot, P. L. Dahmer, Z. T. Buessing, N. B. Stafford, M. E. Reeb, C. A. Zumbaugh, A. J. Tarpoff, K. G. Odde, J. S. Drouillard, M. Theurer, T. Jones, C. K. Jones

Kansas Agricultural Experiment Station Research Reports

Objective:The objective of this study was to evaluate the impact of a post-transport rest period on receiving calf growth performance and blood serum metabolites as indicators of immune function.

Study Description:Eighty heifers were purchased from a sale barn and transported 6 hours to the Kansas State University Beef Cattle Research Center where they were processed at one of four times: immediately upon arrival or after a 6-, 24-, or 48-hour rest period. Cattle were then fed for 35 days with growth performance data collected weekly. Blood samples were also collected and analyzed for serum infectious bovine rhinotracheitis (IBR) …

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 sourced, …

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 2021 were …

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 …

Evaluating A Dry Vs. Wet Disinfection In Boot Baths On Detection Of Porcine Epidemic Diarrhea Virus And Porcine Reproductive And Respiratory Syndrome Virus Rna, Olivia L. Harrison, Grace E. Houston, Allison K. Blomme, Haley K. Otott, Jianfa Bai, Elizabeth G. Poulsen Porter, Jason C. Woodworth, Chad B. Paulk, Jordan T. Gebhardt, Cassandra K. Jones

Kansas Agricultural Experiment Station Research Reports

Maintaining biosecurity between swine barns is challenging, and boot baths are an easily implementable option some utilize to limit pathogen spread. However, there are concerns regarding their efficacy, especially when comparing wet or dry disinfectants. The objective of this study was to evaluate the efficacy of boot baths in reducing the quantity of detectable porcine epidemic diarrhea virus (PEDV) and porcine reproductive and respiratory syndrome virus (PRRSV) genetic material using wet or dry disinfectants. Treatments included 1) control; 2) dry chlorine powder (Traffic C.O.P., PSP, LLC, Rainsville, AL); and 3) wet quaternary ammonium/glutaraldehyde liquid (1:256 Synergize, Neogen, Lexington, KY). Prior …

Inoculation Of Weaned Pigs By Feed, Water, And Airborne Transmission Of Salmonella Enterica Serotype 4,[5],12:I:-, Olivia L. Harrison, Jordan T. Gebhardt, Chad B. Paulk, Brandon L. Plattner, Jason C. Woodworth, Susan Rensing, Cassandra K. Jones, Valentina Trinetta

Kansas Agricultural Experiment Station Research Reports

Salmonella entericaserotype 4,[5],12:i:- (STM) has become an increasing problem for food safety and has been often detected in pork products. For this study, weanling pigs were exposed to STM-contaminated feed, water, or air to determine possible STM transmission routes. An uninoculated control group of pigs was included. The STM was monitored daily in feces and rectal and nasal swabs. The STM colonization was most prevalent in tissues from tonsil, lower intestine, and mesenteric lymph nodes. No differences in lesion severity were observed between inoculated and control pigs. Contaminated feed, water, and aerosolized particles caused infection in weaned pigs; however, …

Effect Of Feed Form, Corn Particle Size, And Extrusion Of Corn On Broiler Performance, Marut Saensukjaroenphon, Caitlin E. Evans, Cassandra K. Jones, Charles R. Stark, Chad B. Paulk

Kansas Agricultural Experiment Station Research Reports

The pelleting and extrusion processes use both thermal and mechanical energies to alter the crystalline structure of the starch granule, which makes it more digestible than raw starch. The particle size of the ground corn particle in the diet also affects the rate at which gelatinization occurs in the extrusion process. There is limited research on broiler performance when feeding diets that contain different particle sizes of corn prior to extrusion. The objective of this study was to determine the effect of feed form, corn particle size and the extrusion of corn on growth performance of 21-d-old broiler chicks. To …

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 …

Effect Of Sow Feeder Type And Drip Cooling On Sow Body Weight, Litter Performance, And Feeder Cleaning Criteria, Zhong-Xing Rao, Kyle Coble, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 600 mixed parity sows (PIC, Line 3) were used to evaluate the effect of different lactation feeders and drip cooling on lactating sow farrowing performance and litter growth performance during summer conditions. For the lactation feeder evaluation, the trial was conducted in 2 sequential groups with 300 sows per group in the same facility in central Arkansas. Five rooms with 60 farrowing stalls per room were used for each group. At approximately d 110 to 112 of gestation, sows were blocked by body condition score (BCS), parity, and offspring genetics (Line 2 or Line 3 sires). Sows …

Evaluation Of Essential Fatty Acids In Lactating Sow Diets On Sow Reproductive Performance, Colostrum And Milk Composition, And Piglet Survivability, Julia P. Holen, Jason C. Woodworth, Mike D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jordan T. Gebhardt, Ashley E. Dedecker, Xochitl Martinez

Kansas Agricultural Experiment Station Research Reports

A total of 3,451 mixed parity sows and their litters were used to evaluate the effects of essential fatty acid intake on sow reproductive performance, piglet growth and survivability, and colostrum and milk composition. At approximately d 112 of gestation, sows were blocked by parity within farrowing room and randomly assigned to 1 of 4 experimental treatments. Lactation diets were corn-soybean meal-wheat-based and included 0.5 (Control) or 3% choice white grease (CWG), 3% soybean oil (SO), or a combination of 3% soybean oil and 2% choice white grease (Combination). Thus, sows were provided diets with low essential fatty acid (EFA; …

Pigs Weaned From Sows Fed A Feed Flavor Had Improved Nursery Performance, But Feed Flavor In The Nursery Diets Did Not Impact Performance, Mikayla S. Spinler, Jordan T. Gebhardt, Joel M. Derouchey, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 360 weaned pigs (DNA 241 × 600: initially 12.6 lb) were used to evaluate the effects of previous sow feed flavoring treatment (control vs. flavor) and nursery diets formulated with or without a feed flavor on growth performance in a 38-d trial. Pigs were weaned at approximately 19 d from sows fed diets with or without 0.05% of the feed flavor (Krave AP, Adisseo, Alpharetta, GA). Pigs were placed in pens (5 to 6 pigs per pen) within sow treatment and were randomly assigned to 1 of 2 dietary nursery treatments. There were 14 to 17 replications …

Effect Of Early Vs. Late Maturing Sire Lines And Creep Feeding On The Stress Response, Intestinal Permeability, And Growth Performance Of Nursery And Finishing Pigs, Madie R. Wensley, Jason C. Woodworth, Mike D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 21 litters (early or late maturing Duroc × DNA 241) and 247 pigs were used in 170-d trial to determine the effect of sire line growth pattern (early vs. late maturing) and creep feeding on the stress response, intestinal permeability, and growth performance of nursery and finishing pigs.Treatments were arranged in a 2 × 2 factorial with main effect of Duroc sire line (early or late maturing) and lactation creep feeding (with or without). Immediately after weaning (initially 14.0 lb), blood cortisol levels were increased (P<0.01) in late maturing pigs compared to early maturing pigs, indicating an increased stress response. A greater percentage (P<0.001) of late maturing pigs lost weight from d 0 to 3 post-weaning compared to early maturing pigs. Likewise, early maturing pigs had improved ADG (P<0.001) and ADFI (P<0.001) during the first 3 d in the nursery. A similar response was observed in daily feed intake with early maturing pigs having increased daily feed intake (P<0.001) for the first 14 d in the nursery. However, no differences were observed in intestinal permeability between treatments. For overall nursery growth performance, a significant interaction was observed for ADG (P= 0.007) and ADFI ( …

Effects Of Gruel Feeding And Oral Dextrose On The Survivability Of Pigs After Weaning, Madie R. Wensley, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Joel M. Derouchey, Ty H. Kim, Andy W. Boschert, Ethan E. Stephenson, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted using 3,087 (Exp. 1) and 988 (Exp. 2) pigs to determine the effect of gruel feeding (Exp. 1) and administering oral dextrose (Exp. 2) on pig survivability after weaning. Upon arrival to the nursery, the smallest 10% of pigs were selected and randomly placed in designated pens with 61 to 108 pigs per pen. Pens of small pigs were assigned to 1 of 2 treatments in a completely randomized design. Treatments consisted of gruel feeding two or four times per day starting 14-d post-placement. At each gruel feeding, approximately 2.5 lb of solid feed was added …

Effect Of Increasing The Level Of A Modified Corn Protein On Nursery Pig Growth Performance, Feed Efficiency, And Fecal Dry Matter, Alan J. Warner, Jason C. Woodworth, Joel M. Derouchey, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Keith Mertz

Kansas Agricultural Experiment Station Research Reports

A total of 360 barrows (DNA 200 × 400; initially 13.4 ± 0.12 lb) were used in a 38-d study to evaluate the effects of increasing levels of a modified corn protein product on nursery pig growth performance and fecal dry matter. Upon arrival to the nursery research facility, pigs were randomly assigned to pens (5 pigs per pen) and pens were allotted to 1 of 6 dietary treatments with 12 pens per treatment. Experimental diets were fed in two phases with phase 1 fed from d 0 to 10 and phase 2 fed from d 10 to 25. Phase …

Influence Of Protein Source On Growth Performance In Nursery Pigs, Ethan B. Stas, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 330 pigs (241 × 600, DNA; initially 10.7 lb) were used to determine the influence of dietary protein source on growth performance in nursery pigs. At weaning, pigs were randomly allotted to 1 of 6 dietary treatments with 4 or 5 pigs per pen and 12 replications per treatment. Dietary treatments were arranged in a one-way treatment structure with diets containing different protein sources; enzymatically treated soybean meal (HP 300; Hamlet Protein, Findlay, OH), spray-dried bovine plasma (APC Corp, Ankeny, IA), fermented soybean meal (ME-PRO; Prairie Aquatech, Brookings, SD) with or without fish solubles (TASA, Lima, Peru), …

Effects Of Bovine Plasma And Pharmacological Zinc Level On Nursery Pig Growth Performance And Fecal Characteristics, Zhong-Xing Rao, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Joy M. Campbell, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 300 pigs (241 × 600, DNA; initially 12.9 lb) were used in a 38-d trial to evaluate the effect of Zn level and bovine plasma in nursery pig diets. At the time of placement, pens of pigs were weighed and allotted to 1 of 4 dietary treatments in a randomized complete block design with barn as the blocking factor. There was a total of 60 pens with 5 pigs per pen and 15 replicates per dietary treatment. The treatments were arranged in a 2 × 2 factorial with main effects of Zn level (high and low) and …

Evaluation Of Clay-Based Binders And In-Feed Antimicrobials On Growth Performance And Biological Measurements In Nursery Pigs, Larissa L. Becker, Jordan T. Gebhardt, Mike D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jason C. Woodworth, Raghavendra G. Amachawadi, Ramya Kalam, Xiaorong Shi, T. G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

A total of 360 barrows (DNA 200 × 400; initially 14.2 ± 0.08 lb) were used in a 42-d growth study to evaluate clay-based binders or an in-feed antimicrobial on growth performance and biological measurements including fecal and blood analysis in nursery pigs. Pigs were weaned at approximately 21 d of age and randomly allotted to 1 of 4 dietary treatments in a completely randomized design. There were 5 pigs per pen and 18 replications per treatment. Dietary treatments were corn-soybean meal-based and fed in two phases from d 0 to 9 (phase 1) and 9 to 21 (phase 2) …

Effects Of Replacing Lactose With Novel Carbohydrate Sources On Nursery Pig Growth Performance, Rafe Q. Royall, 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 effects of replacing lactose in Phase 1 and 2 nursery pig diets with 1 of 2 novel carbohydrate (CHO) products (CHO-D and CHO-L; Cargill Starches, Sweeteners, & Texturizers, Blair, NE) on growth performance and fecal dry matter. A total of 360 barrows (DNA 200 × 400; initially 13.2 ± 0.10 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 12.0 and 14.5 lb), and then allotted to 1 of 6 …

Evaluation Of Corn Protein Source On Feed Intake Preference In Nursery Pigs, Ethan B. Stas, Robert D. Goodband, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 180 pigs (241 × 600, DNA; initially 17.0 ±1.6 lb) were used to determine feed intake preference from various corn protein sources. A series of 5-day preference trials were used with two diets offered within each comparison with feeder location rotated daily within each pen. Feed consumption was used to determine preference between each diet comparison. There were 6 replicates of each diet comparison. The corn protein sources utilized in this experiment included: fermented corn protein, high protein distillers dried grains with solubles (HPDDGs), whole stillage solids (approximately 2/3 content of fermented corn protein), and thin stillage …

Effect Of Benzoic Acid Feeding Strategy On Weanling Pig Growth Performance And Fecal Dry Matter, Katelyn N. Gaffield, Joel M. Derouchey, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 350 weanling barrows (DNA 200 × 400, DNA; initially 13.0 ± 0.08 lb) were used in a 38-d study to evaluate the effects of different benzoic acid feeding strategies on nursery growth performance and fecal dry matter. Pigs were randomly assigned to pens (5 pigs per pen) and pens were allotted to 1 of 5 dietary treatments with 14 pens per treatment. Diets were fed in 3 phases: phase 1 from weaning to d 10, phase 2 from d 10 to 18, and phase 3 from d 18 to 38. Dietary treatments were formulated to provide 0, …

Evaluating The Effects Of Benzoic Acid On Finishing Pig Growth Performance, Katelyn N. Gaffield, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 2,106 pigs (PIC 337 × 1050; initially 73.5 ± 4.21 lb) were used in a 101-d growth study to evaluate the effects of dietary benzoic acid level on grow-finish pig growth performance and carcass characteristics. Pens of pigs (27 pigs per pen) were randomly assigned to 1 of 3 dietary treatments with 13 pens per treatment. Dietary treatments were corn-soybean meal-DDGS-based with an inclusion of none, 0.25, or 0.50% benzoic acid (VevoVitall, DSM Nutritional Products, Parsippany, NJ). Diets were fed in 4 phases from 74 to 110, 110 to 165, 165 to 220, and 220 to 290 …

Evaluation Of A Dried Fermentation Product Administered Through Drinking Water In A Commercial Environment On Nursery Pig Mortalities, Antibiotic Injections, And Growth Performance, Alan J. Warner, Brittany Carrender, Mike D. Tokach, Joel M. Derouchey, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt, Kyle F. Coble, Alain Labbé, Walter Heuser

Kansas Agricultural Experiment Station Research Reports

A total of 34,399 commercial nursery pigs (initially 12.2 lb) were used in 20 nursery barns with 10 barns per treatment to determine the effectiveness of a dried fermentation product (DFP) on nursery pig mortalities, antibiotic injection frequency, and close-out growth performance. The target dosage of the DFP for the first 14 d was 35 mg/kg BW based on the actual dosage of a previous experiment. Following the 14-d supplementation period, pigs continued to be monitored until they were moved from the barn at approximately d 45. The first 6 replicates consisted of the DFP as the sole source of …

The Effect Of Lactation Diets Supplemented With Krave Ap On Sow And Litter Performance, Mikayla S. Spinler, Jordan T. Gebhardt, Joel M. Derouchey, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 105 sows (Line 241, DNA) were used across four batch farrowing groups to evaluate the effects of feeding a feed flavor in lactation diets on sow and litter performance. Sow groups 1 and 2 farrowed in an old farrowing house during the summer months and groups 3 and 4 farrowed in a new farrowing house during the winter months. The farrowing house used for groups 1 and 2 was environmentally regulated by fans and drip coolers to adjust ambient temperature. The farrowing house used for groups 3 and 4 was environmentally controlled to maintain a target temperature …

Effects Of Varying The Acid-Binding Capacity-4 In Diets Utilizing Specialty Soy Products With Or Without Pharmacological Levels Of Zinc On Nursery Pig Performance, Ethan B. Stas, Alan J. Warner, Chad W. Hastad, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 1,057 pigs (PIC TR4 × [Fast LW × PIC L02]; initially 13.7 lb) were used to evaluate the effects of acid-binding capacity-4 (ABC-4) with or without pharmacological levels of Zn on nursery pig performance. At weaning, pigs were allotted to 1 of 4 dietary treatments based on initial weight. There were 22 pigs per pen and 12 replications per treatment. Dietary treatments were arranged in a 2 × 2 factorial consisting of a low and high ABC-4 level with or without pharmacological levels of Zn provided by ZnO. The low ABC-4 diets contained 13.0 and 10.75% novel …

Evaluation Of A Dried Fermentation Product Administered Through Drinking Water On Nursery Pig Growth Performance, Fecal Consistency, And Antibiotic Injections, Alan J. Warner, Alexandra L. Gerrard, Mike D. Tokach, Raghavendra G. Amachawadi, Alain Labbé, Walter Heuser, Ramya Kalam, Xiaorong Shi, T. G. Nagaraja, Joel M. Derouchey, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 350 barrows (DNA 200 × 400; initially 13.5 ± 0.02 lb) were used in a 42-d study to evaluate the effects of a dried fermentation product administered through drinking water on nursery pig growth performance, antibiotic injection frequency, fecal consistency, and fecalEscherichia colipresence. Upon arrival to the nursery research facility, pigs were randomly assigned to pens (5 pigs per pen) and pens were allotted to 1 of 2 water treatments with 35 pens per treatment. Water treatments were provided with or without a fermentation product administered through the water lines at a 1:128 dilution rate …

The Effect Of Different Bone And Analytical Methods On The Assessment Of Bone Mineralization To Dietary Phosphorus, Phytase, And Vitamin D In Finishing Pigs, Hadley R. Williams, Jordan T. Gebhardt, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jon R. Bergstrom, Chad W. Hastad, Zach B. Post, Michael C. Rahe, Christopher L. Siepker, Panchan Sitthicharoenchai, Steve M. Ensley

Kansas Agricultural Experiment Station Research Reports

Eight hundred eighty-two pigs (initially 73.2 ± 0.7 lb) were used to evaluate the effects of different bones and analytical methods on the assessment of bone mineralization response to dietary P and vitamin D in growing-finishing pigs. Pens of pigs (20 pigs per pen) were randomized to 1 of 5 dietary treatments in a completely randomized design with 9 pens per treatment. Treatments were formulated to have varying levels of P, phytase, and vitamin D to potentially provide wide differences in bone characteristics. After feeding diets for 112 d, nine pigs per treatment were euthanized for bone, blood, and urine …