Life Sciences Commons^™

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 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 …

Influence Of Herbal Active D On Nursery Pig Growth Performance, Larissa L. Becker, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 2,268 pigs (L337 × 1050 PIC; initially 12.1 ± 0.39 lb) were used in a 42-d growth study to evaluate the effects of herbal active D on growth performance, bone characteristics, and serum parameters of nursery pigs. Pigs were weaned at approximately 21 d of age and randomly allotted to 1 of 3 dietary treatments in a randomized complete block design. A total of 84 pens were used with 27 pigs per pen and 28 replications per treatment across 2 rooms. Pens were blocked by BW and weaning date. Dietary treatments were corn-soybean meal-based and fed in …

Evaluating The Effects Of Sodium Diformate On Finishing Pig Growth Performance, Katelyn N. Gaffield, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Joel M. Derouchey, Jordan T. Gebhardt, Mariana B. Menegat, Mary Liebenstein, Matt Allerson

Kansas Agricultural Experiment Station Research Reports

A total of 2,200 pigs (Duroc sire (PIC 800 or DNA 600) × PIC Camborough; initially 53.4 ± 0.66 lb) were used to conduct a 117-d growth trial to evaluate the effects of dietary sodium diformate level on grow-finish pig growth performance and carcass characteristics. Pens of pigs (25 pigs per pen) were randomly assigned to 1 of 4 dietary treatments in a randomized complete block design with 22 replicates per treatment. Dietary treatments were corn-soybean meal-based with the addition of none, 0.25, 0.50, or 0.75% sodium diformate (Formi NDF; ADDCON Nordic AS, Porsgrunn, Norway). Diets were fed in 6 …

A Meta-Regression Analysis To Evaluate The Effects Of Narasin On Grow-Finish Pig Performance, Larissa L. Becker, Jordan T. Gebhardt, Mike D. Tokach, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Jenna A. Seltzer, Roger A. Arentson, Michael Shields, Christopher L. Puls

Kansas Agricultural Experiment Station Research Reports

A meta-regression analysis was conducted to evaluate the effects of added narasin in growing-finishing pig diets to predict the influence on average daily gain (ADG), feed efficiency (G:F), and carcass yield. A database was developed containing 21 technical reports, abstracts, and refereed papers from 2012 to 2021 representing 35 observations for growth performance data in studies ranging from 35 to 116 days in length (overall data). In addition, within these 35 observations, individual period data were evaluated (143 observations) using weekly, bi-weekly, or monthly performance intervals (period data). Regression model equations were developed, and predictor variables were assessed with 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) …

The Impact Of Dietary Analyzed Calcium To Phosphorus Ratios And Standardized Total Tract Digestible Phosphorus To Net Energy Ratios On Growth Performance, Bone, And Carcass Characteristics Of Pigs, Hadley R. Williams, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt, Carine M. Vier, Ning Lu, Ron Navales, Matthew Spindler, Uislei Orlando, Luis Zaragoza, Alyssa M. Betlach

Kansas Agricultural Experiment Station Research Reports

A total of 2,184 pigs (PIC 337 × 1050; initially 27.3 lb) were used to evaluate the effects of feeding varying analyzed calcium to phosphorus (Ca:P) ratios at two levels of standardized total tract digestible (STTD) P:NE. Pens of pigs (26 pigs per pen) were assigned to 6 dietary treatments in a randomized complete block design with 14 pens per treatment. Diets consisted of two levels of STTD P:NE, including the PIC recommendation (1.8, 1.62, 1.43, 1.25, 1.10, and 0.99 g STTD P/Mcal NE from 25 to 50, 50 to 90, 90 to 130, 130 to 180, 180 to 230, …

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 ( …

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 …

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, …

Effect Of Increasing Manganese From Manganese Hydroxychloride On Growth Performance, Carcass Characteristics, And Economics Of Grow-Finish Pigs, Hilario M. Cordoba, Mikayla S. Spinler, Ethan B. Stas, Rafe Q. Royall, Jason C. Woodworth, Robert D. Goodband, Joel M. Derouchey, Mike D. Tokach, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 2,025 grow-finish pigs (337 × 1050, PIC; initially 88.0 ± 2.68 lb) were used in a 95-d trial to determine the impact on growth by increasing Mn from Mn hydroxychloride compared to a control diet containing MnSO₄. Pigs were housed in mixed gender pens with 27 pigs per pen and 15 pens per treatment. The treatments were structured as a completely randomized design and consisted of a control diet containing 30 ppm of Mn from MnSO₄(Eurochem, Veracruz, Mexico) or 15, 30, 45, or 65 ppm of Mn from Mn hydroxychloride (IBM; IntelliBond M, …

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, …

Evaluation Of Environmental Enrichment On Feed Intake And Growth Performance Of Weanling 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 360 pigs (DNA 200 × 400; initially 13.8 ± 1.83 lb BW) were used in a 42-d nursery trial to determine the effects of the addition of an environmental enrichment, in the form of ropes tied to the feeder dividers, on feed intake and growth performance of weanling pigs. Pigs were weaned at approximately 21-d of age and randomly assigned to 1 of 2 treatments with 5 pigs per pen and 36 pens per treatment. At placement, a rope was secured to each of the dividers in the feed pans of the feeder (3 ropes/feeder) and remained …

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 …

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 …

The Effect Of Bone And Analytical Methods On The Assessment Of Bone Mineralization Response To Dietary Phosphorus, Phytase, And Vitamin D In Nursery Pigs, Hadley R. Williams, Taylor E. Chin, Jordan T. Gebhardt, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jon R. Bergstrom, Michael C. Rahe, Christopher L. Siepker, Panchan Sitthicharoenchai, Steve M. Ensley

Kansas Agricultural Experiment Station Research Reports

Three hundred-fifty pigs (initially 26.2 ± 1.23 lb) were used to evaluate the effects of bone and analytical methods on the assessment of bone mineralization response to dietary P and vitamin D in nursery pigs. Pens of pigs (5 or 6 pigs/pen) were randomized to 6 dietary treatments in a randomized complete block design with 10 pens per treatment. Treatments were formulated to have varying levels of P, phytase, and vitamin D to provide differences in bone characteristics. After feeding diets for 28 d, eight pigs per treatment were euthanized for bone, blood, and urine analysis. The response to treatment …

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 …

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 …

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 …

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 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 …

Influence Of Feed Grade Amino Acid Inclusion Level In Late Nursery And Grower Diets Fed To Pigs From 21 To 75 Lb, Hadley R. Williams, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt, Chad W. Hastad, Zach B. Post, Keith D. Haydon

Kansas Agricultural Experiment Station Research Reports

A total of 912 pigs (PIC TR4 × (Fast LW × PIC L02); initially 21.4 lb) were used in a 43-d trial to evaluate the influence of feed grade amino acid in diets containing 30% dried distillers grains with solubles (DDGS) fed to pigs from 21 to 75 lb. Pigs were randomly assigned to pens (19 pigs per pen) and pens were randomly allotted in weight blocks to 1 of 4 dietary treatments with 12 pens per treatment. Dietary treatments contained low, medium, high, or very high additions of feed grade amino acids with L-lysine added at approximately 0.25, 0.40, …

Evaluating Dietary Acidifiers As Alternatives To Conventional Feed-Based Antibiotics In Nursery Pig Diets, Payton L. Dahmer, Cassandra K. Jones

Kansas Agricultural Experiment Station Research Reports

A total of 360 weanling pigs (200 × 400, DNA; initially 21.4 ± 0.23 lb BW) were used in a 21-d experiment with 6 pigs/pen, 10 replicate pens/treatment, and 2 separate nursery rooms, each with 30 pens. Pigs were weighed and allotted to pens based on BW in a completely randomized block design to one of six treatment diets: 1) negative control (no organic acids or antibiotics) and the control with 2) 0.25% acidifier A; 3) 0.3% acidifier B; 4) 0.5% acidifier C); 5) 50 g/ton carbadox; and 6) 400 g/ton chlortetracycline (CTC). Upon weaning, a common diet with no …

Effects Of Increasing Soybean Meal In Corn-Based Diets On Growth Performance Of Late Finishing Pigs, Julia P. Holen, Robert D. Goodband, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 1,793 pigs (L337 × 1050, PIC, Hendersonville, TN; initially 231.2 ± 2.4 lb) were used to evaluate the effects of increasing soybean meal in corn-based diets on growth performance of late finishing pigs. Pens of pigs were blocked by initial weight and randomly assigned to 1 of 5 dietary treatments with 22 to 27 pigs per pen and 12 to 14 pens per treatment. Experimental diets were corn-based, formulated to 0.70% SID Lys, and contained varying amounts of feed grade AA to meet or exceed requirement estimates. Soybean meal gradually increased from 5 to 20% of the …

The Effect Of Increasing Valine, Isoleucine, And Tryptophan:Lysine Ratios On Pigs’ Growth Performance And Carcass Characteristics When Fed Diets With Increased Levels Of Dietary Leucine:Lysine, Hadley R. Williams, Mike D. Tokach, Jason C. Woodworth, Joel M. Derouchey, Robert D. Goodband, Jordan T. Gebhardt, Chad W. Hastad, Zach B. Post

Kansas Agricultural Experiment Station Research Reports

A total of 4,076 pigs (initially 86.5 ± 1.24 lb) were used across 2 experiments to evaluate the effect of increasing ratios of Val, Ile, and Trp to Lys on pig growth performance and carcass characteristics in corn-soybean meal-DDGS-based diets containing increased levels of dietary Leu:Lys. In both experiments, the 4 dietary treatments were as follows: 1) high soybean meal and low feed grade amino acids (control); 2) low soybean meal and high feed grade amino acids, with Val:Lys, Ile:Lys, and Trp:Lys at 67, 55, and 18, respectively, (low ratio); 3) same as diet 2 except Val:Lys, Ile:Lys, and Trp:Lys …

Effects Of Iron Injection Timing On Suckling And Subsequent Nursery And Growing-Finishing Performance And Hematological Criteria Under Commercial Conditions, H. E. Williams, B. Carrender, R. Maurer, J. M. Derouchey, J. C. Woodworth, S. S. Dritz, M. D. Tokach, R. D. Goodband, A. J. Holtcamp, K. F. Coble

Kansas Agricultural Experiment Station Research Reports

A total of 1,892 newborn pigs (PIC 359 × C40; initially 3.3 lb body weight [BW]) within 172 litters were used in a 168-d study to evaluate the effects of Fe injection timing after birth on suckling and subsequent nursery and growing-finishing growth performance and hematological criteria. One day after birth, piglets were weighed, and 11 pigs within each litter were allotted to 1 of 6 treatments consisting of no Fe injection or 200 mg of injectable Fe provided on d 1, 3, 5, or 7 of age, or 200-mg on d 1 plus 200-mg on d 12 of age. …

Alternatives To Replace The Use Of Zinc Oxide In Nursery Pig Diets, F. Laskoski, M. D. Tokach, J. C. Woodworth, R. D. Goodband, S. S. Dritz, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 300 pigs (DNA; 241 × 600; initially 10.6 lb) were used to evaluate the effects of different nutritional strategies to replace zinc oxide (ZnO) in nursery diets. At weaning, 5 pigs were allotted to each pen and pens were assigned to 1 of 6 dietary treatments in a completely randomized design. There were 10 replicate pens per treatment. Treatments consisted of A) Positive control (ZnO providing 3,000 ppm Zn from d 0 to 7, and 2,000 ppm Zn from d 7 to 25); B) Negative control (NC; no ZnO); C) NC plus 1.2% Na diformate; D) NC …

Determining The Effects Of Manganese Source And Level On Growth Performance, Carcass Characteristics, And Economics Of Growing-Finishing Pigs, H. R. Kerkaert, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 1,944 mixed sex growing-finishing pigs (PIC; 337 × 1050; initially 76.0 ± 3.71 lb) were used in a 107-d growth trial to determine the effects of increasing levels of two different manganese sources on the performance of growing-finishing pigs from 76 to 295 lb. Pens were assigned to 1 of 6 treatments in a randomized complete block design with initial weight as a blocking factor. There were 12 replicate pens per treatment and 27 pigs per pen. The experimental diets were corn-soybean meal-based and were fed in 4 phases. The 6 dietary treatments were arranged in a …

Determining The Effects Of Increasing Levels Of Xylanase In Nutrient Adequate Diets On Growth Performance, Carcass Characteristics Of Growing-Finishing Pigs, H. R. Kerkaert, J. M. Derouchey, S. S. Dritz, R. D. Goodband, M. D. Tokach, J. C. Woodworth, H. Calderone Cartagena, M. Gonçalves

Kansas Agricultural Experiment Station Research Reports

A total of 1,944 mixed sex growing-finishing pigs (PIC; 337 × 1050; initial BW of 49.9 ± 1.18 lb) were used in a 131-d growth trial to determine the effects of increasing added xylanase xylanase in adequate diets on grow-finish pig growth performance and carcass characteristics. Pens were assigned to 1 of 6 treatments in a randomized complete block design with BW as a blocking factor. There were 12 replicate pens per treatment and 27 pigs per pen. The experimental diets were corn-soybean meal-based and were fed in 5 phases. The 6 dietary treatments were formulated to: 0, 2.3, 4.5, …

Evaluation Of A Commercial Model For Predicting Growth Performance Of Pigs With Varying Diet Composition And Stocking Density, M. B. Menegat, F. Wu, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to validate the growth performance predictions of a commercial model (CAMERA®; INTL FCStone, New York, NY) by comparing the optimally-solved estimates with observed growth performance from published studies. Three studies were selected to create 3 feeding scenarios: 1) variation in dietary energy concentrations and fiber sources (Nitikanchana et al., 2015); 2) variation in dietary lysine level (Menegat et al., 2017); and 3) variation in space allowance (Carpenter et al., 2018). For each validation scenario, the growth performance of pigs from the best-performing treatment group was first estimated, calibrated using the observed performance, and used …