Life Sciences Commons^™

Effects Of Increasing Standardized Ileal Digestible Lysine On Growth Performance Of 40- To 90-Pound Dna Pigs, Rafe Q. Royall, Robert D. Goodband, Mike D. Tokach, Joel M. Derouchey, Jordan T. Gebhardt, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to estimate the SID Lys requirement for growth and feed efficiency of 40- to 90-lb DNA pigs. A total of 300 pigs (600 × 241, DNA; initially 40.6 ± 1.11 lb) were used in a 24-d trial. Pens of pigs were blocked by BW and randomly allotted to 1 of 6 dietary treatments with 5 pigs per pen and 10 pens per treatment in a randomized complete block design. Dietary treatments were corn-soybean meal-based and formulated to contain 1.00, 1.10, 1.20, 1.30, 1.40, and 1.50% SID Lys. Increasing SID Lys increased (linear,P= …

Effects Of Feeding Increasing Standardized Ileal Digestible Lysine On Growth Performance Of 26- To 300-Lb Pic Line 800-Sired Pigs, Katelyn N. Gaffield, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt, Carine M. Vier, Matthew Spindler, Uislei Orlando, Luis Zargoza, Ning Lu, Wayne Cast, Danielle F. Wilson-Wells, Julia P. Holen, Alyssa M. Betlach

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to evaluate the growth performance and economic returns of PIC 800 × 1050 pigs fed increasing SID Lys from approximately 26 to 300 lb. Pens of pigs were blocked by BW and randomly assigned to 1 of 5 dietary treatments in a randomized complete block design with 26 pigs per pen and 16 pens per treatment. Pens were provided 1 of 5 dietary treatments with increasing SID Lys at 85, 93, 100, 107, and 115% of current PIC recommendations within 6 different phases. Two base diets containing low Lys and high Lys were blended …

Comparing Increasing Tryptophan:Lysine Ratios In Ddgs-Based Diets With Or Without A Ddgs Withdrawal Strategy On Growth Performance And Iodine Value Of Growing-Finishing Pigs, Mikayla S. Spinler, Andres F. Tolosa, Jason C. Woodworth, Mike D. Tokach, Robert D. Goodband, Joel M. Derouchey, Kyle F. Coble, Brittany A. Carrender, Amanda J. Gerhart, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 6,240 pigs (DNA 600 × PIC 1050; initially 49.7 × 2.23 lb), divided into 2 groups, were used in a 119- or 120-d study to compare increasing the Trp:Lys ratio in diets with DDGS or a DDGS withdrawal strategy on growth performance and carcass fat iodine value of grow-finish pigs. Pigs were randomly allotted to 1 of 7 dietary treatments with 30 to 36 pigs per pen and 26 replications per treatment. Diets were fed in 4 phases (approximately 50 to 96, 96 to 157, 157 to 220, and 220 lb to market). Diets included a control …

Effects Of Increasing Fat Levels In Diets Containing 40% Distillers Dried Grains With Solubles On Growth Performance And Carcass Characteristics In Commercial Finishing Pigs, Jenna J. Bromm, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 2,160 pigs (PIC 337 × 1050; initially 82.26 lb) were used in two groups to evaluate the effects of increasing added fat levels in diets containing high levels of DDGS on growth performance and carcass characteristics of finishing pigs. Pens of pigs were blocked by initial BW and randomly assigned to 1 of 4 dietary treatments with 27 pigs per pen and 20 pens per treatment. Three of the four dietary treatments included increasing percentages of added fat (choice white grease; 0, 1, or 3%). The final treatment was fed the control diet without added fat until …

Effects Of Increased Vitamin Premix Inclusion Rate On Growth Performance Of Finishing Pigs, Hilario M. Cordoba, Robert D. Goodband, Joel M. Derouchey, Mike D. Tokach, Jason C. Woodworth, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 1,080 mixed sex pigs (337 × 1050, PIC; initially 63.1 ± 0.87 lb) were used in a 123-d growth trial to determine the effects of vitamin premix inclusion rate on growing-finishing pig growth performance and carcass characteristics. Pens of pigs were assigned to 1 of 2 treatments in a completely randomized design. There were 20 replicate pens/treatment and 27 pigs/pen. The experimental diets were corn-soybean meal-based and were fed in 4 phases from 63 to 110, 110 to 160, 160 to 220, and 220 to 293 lb. Pigs were fed 1 of 2 levels of a vitamin …

Characterizing Variation In Nursery Pig Growth Performance Based On Different Allotment Strategies, Jenna J. Bromm, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 360 pigs (200 × 400, DNA; initially 13.8 ± 1.83 lb BW) were used in a 42-d nursery trial to evaluate multiple procedures to allot pigs to pens and pens to treatment in swine nursery research. At placement, pigs were randomly assigned to 1 of 3 different allotment strategies. For the first strategy (random), pigs were allotted to pens using a completely randomized design. For strategy 2 (body weight distribution), pigs were sorted by body weight into 1 of 5 groups. Pigs were then randomly assigned to pen so there was 1 pig from each weight group …

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, …

Persistence Of African Swine Fever Virus In Feed And Feed Mill Environment Over Time After Manufacture Of Experimentally Inoculated Feed, Grace E. Houston, Jessie D. Trujillo, Cassandra K. Jones, Taeyong Kwon, Charles R. Stark, Konnor R. Cool, Chad B. Paulk, Natasha N. Gaudreault, Jason C. Woodworth, Igor Morozov, Carmina Gallardo, Jordan T. Gebhardt, Juergen A. Richt

Kansas Agricultural Experiment Station Research Reports

To reduce the risk of disease from harmful feed-based pathogens, some feed manufacturers quarantine high-risk ingredients prior to their inclusion in feed. Data exist that confirms this practice is effective, but to our knowledge there is no information about porcine pathogen survival in mill environments. The objective of this study was to determine survival of African swine fever virus (ASFV) in swine feed and on mill surfaces after manufacture of experimentally inoculated swine feed. A pilot-scale feed mill was placed within a biosecurity level (BSL) 3 facility to manufacture batches of feed. The priming batch, Batch 1, was ASFV-free feed …

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 …

Effect Of Corn Type And Form Of Supplement On Grazing Steers, J. K. Farney, T. Bottorff

Kansas Agricultural Experiment Station Research Reports

Eighty stocker steers were grazed on bromegrass from April to the beginning of November and were provided five different feeds while on grass during the summer. Treatments evaluated included (1) mineral only; (2) free-choice supplementation in the form of liquid feed (MIX30) or (3) block format (Mintrate 40 Red); and hand-fed supplements of 60% corn:40% dried distillers grains at 0.5% of body weight on a dry matter basis offered daily where the corn was either an (4) isoline corn (ISO; parent genetic line) or (5) Enogen feed corn (ENO; includes alpha-amylase gene). Steers were weighed every 28 days while on …

Growth Performance Of Broilers In Response To Increasing Concentration Of Multiple Mycotoxins In Contaminated Corn, Allison K. Blomme, Khairy I. Jenkins, Kara M. Dunmire, Nelsa M. Beckman, Haley K. Otott, Charles R. Stark, Chad B. Paulk

Kansas Agricultural Experiment Station Research Reports

Mycotoxins in grains are a result of mold or fungal growth from environmental stressors and cause detrimental impacts to poultry production. Thus, the objective of this experiment was to determine the effects of increasing concentration of a combina­tion of mycotoxins on growth performance of broiler chicks. A total of 250 one-day-old male broilers (Cobb 500; initial BW 0.092 lb) were used in a 15-d study. Broilers were housed in 3 Petersime batteries withad libitumaccess to feed and water. Treatments were randomly assigned to 1 of 50 cages within location block, resulting in 10 cages per treatment with 5 …

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 by consumers (n = 105), who were provided information …

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 forad libitumintake 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 libitumfeed refusal was targeted …

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 thead libitumdaily 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 (NE_g) per 100 lb of DM fed forad libitum …

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 …

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 …

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_2α(MGA-PGF_2α) 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 …

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) …

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 - $2.50/lb; Ultra-Low - $1.25/lb or …

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:Based …

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-A₂antibody (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 …

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.

Roundup 2022: Agricultural Research Center-Hays

Kansas Agricultural Experiment Station Research Reports

Roundup is the major beef cattle education and outreach event sponsored by the Kansas State University Agricultural Research Center - Hays. This report communicates timely, applicable research information on beef production and rangeland topics.

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 …

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 …

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 …

Effects Of Increasing Soybean Meal And Valine:Lysine And Tryptophan:Lysine Ratios On Finishing Pig Performance, Macie E. Reeb, Jamil E. G. Faccin, Robert D. Goodband, Jason C. Woodworth, Joel M. Derouchey, Mike D. Tokach, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 621 pigs (DNA 241 × 600; initially 138.0 ± 5.5 lb) were used in a 65-d growth trial to determine the effect of increasing soybean meal (SBM) and Val:Lys and Trp:Lys ratios on finishing pig performance. Experimental diets were corn-soybean meal-DDGS-based and fed in 3 phases. The 6 dietary treatments were arranged in a 3 × 2 factorial with main effects of SBM level (low, medium, high) and Val:Lys and Trp:Lys ratios (standard and high). The additional amino acids (AA) provided by increasing levels of SBM in diets with standard AA ratios were expected to result in …

Effects Of Extruded-Expelled Soybean Meal And Benzoic Acid On Growth Performance, Carcass Characteristics, And Carcass Iodine Value Of Finishing Pigs, Jenna J. Bromm, Joel M. Derouchey, Mike D. Tokach, Kiah M. Berg, Jon A. De Jong, Courtney L. Pohlen, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 2,162 pigs (PIC 1050 × DNA 600; initially 69.2 ± 4.9 lb) were used in a 109-d finishing trial to evaluate the effects of extruded-expelled soybean meal (EESBM) and benzoic acid on growth performance, carcass characteristics, and carcass iodine value. Pigs were randomly allotted to 1 of 4 treatments with 27 to 28 pigs per pen and 20 pens per treatment. Dietary treatments were arranged in a 2 × 2 factorial with main effects of soybean meal source and benzoic acid. Diets contained either conventional soybean meal (SBM) or extruded-expelled soybean meal (EESBM; Lester Feed and Grain, …

Effects Of Fat Source And Level On Growth Performance, Carcass Characteristics, Carcass Iodine Value And Economics Of Finishing Pigs In A Commercial Environment, Jenna J. Bromm, Joel M. Derouchey, Mike D. Tokach, Kiah M. Berg, Jon A. De Jong, Courtney L. Pohlen, Jason C. Woodworth, Robert D. Goodband, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 2,011 pigs (PIC 1050 × DNA 600; initially 62.4 ± 4.6 lb) were used in a 113-d finishing trial to evaluate the effects of two different fat sources fed at two different levels on growth performance, carcass characteristics, carcass iodine value, and economics of finishing pigs raised in a commercial environment. Pigs were randomly allotted to 1 of 5 dietary treatments with 21 to 27 pigs per pen and 16 pens per treatment. Dietary treatments were arranged in a 2 × 2 + 1 factorial with main effects of fat source and fat inclusion level. Dietary treatments …

Heat Stress During The Transition Period Is Associated With Impaired Production, Reproduction, And Survival In Dairy Cows, P. R. Menta, V. S. Machado, J. M. Piñeiro, W. W. Thatcher, J. E. P. Santos, A. Vieira-Neto

Kansas Agricultural Experiment Station Research Reports

The objectives of this retrospective cohort study were to determine the association of heat stress exposure during the transition period with production, health, reproduction, and survival during the first 90 days postpartum in dairy cows. A total of 5,722 Holstein cows (2,324 heifers and 3,397 cows) were categorized into environmental condition (EC) groups based on average temperature humidity index (THI) exposure as thermoneutral (TN) or heat stress (HS) during the pre (Pre) and early postpartum (Post) periods into TN-TN, TN-HS, HS-TN, and HS-HS. In heifers, exposure to HS during the Pre, Post, or Pre and Post was associated with a …