Life Sciences Commons^™

Effects Of Commercial Formaldehyde Inclusion And Lysine Level On Pig Performance Of 35- To 50-Lb Nursery Pigs, R. A. Cochrane, L. G. Sica, J. C. Woodworth, S. S. Dritz, C. R. Stark, C. K. Jones

Kansas Agricultural Experiment Station Research Reports

A total of 299 pigs (DNA 400 × 200; initial BW 33.6 lb) were used in a 14-d study to determine the effects of two separate commercial formaldehyde products (Termin-8; Anitox Corp, Lawrenceville, GA and SalCURB; Kemin Industries, Inc., Des Moines, IA) on nursery pig performance. Dietary treatments were arranged in a 3 × 2 factorial design with three formaldehyde inclusions: none vs. 6.5 lb/ton SalCURB vs. 6.0 lb/ton Termin-8 and 2 Lys levels: Standard (1.25% SID Lys) vs. Low (1.10% SID Lys). Formaldehyde treatments were established based on supplier recommendations and diets were treated with supplier-specific equipment. Pens of …

Effects Of Amino Acid And Energy Intake During Late Gestation On Piglet Birth Weight And Reproductive Performance Of Gilts And Sows Housed Under Commercial Conditions, M. A. Goncalves, K. M. Gourley, S. S. Dritz, M. D. Tokach, N. M. Bello, J. M. Derouchey, J. C. Woodworth, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to determine the effects of amino acid (AA) and energy intake during late gestation on piglet birth weight and reproductive performance of high-performing gilts and sows housed under commercial conditions. At d 90 of gestation, a total of 1,102 females (PIC 1050) were housed in pens by parity group (P1 or P2+), blocked by weight within each pen, and each female was randomly assigned to dietary treatments within weight block. Dietary treatments consisted of combinations of 2 standardized ileal digestible (SID) AA (10.7 or 20.0 g SID Lys intake/d with other AA meeting or …

Effects Of Standardized Ileal Digestible Lysine On Nursery Pig Growth Performance, C. M. Vier, I. B. De Souza, J. A. De Jong, M. A. Goncalves, A. M. Jones, R. D. Goodband, M. D. Tokach, J. M. Derouchey, J. C. Woodworth, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

Lysine is the first limiting amino acid in swine diets, thus providing the appropriate level in the diet is critical to growth performance. Therefore, the objective of this study was to determine the standardized ileal digestible (SID) Lys requirement of nursery pigs from 15 to 35 lb. A total of 300 maternal line barrows (200 × 400, DNA, Columbus, NE; initially 14.9 ± 0.5 lb BW) were fed six experimental diets as part of a 21-d trial. Pigs were randomly allotted to pens at weaning based on BW, and were fed a common pelleted diet for 9 d after weaning. …

Effects Of Standardized Ileal Digestible Lysine Content In Low Crude Protein Diets On Finishing Pig Performance And Economics From 230 To 280 Lb, J. T. Gebhardt, M. A. Goncalves, M. D. Tokach, J. M. Derouchey, R. D. Goodband, J. C. Woodworth, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to estimate the nutritional requirement of standardized ileal digestible (SID) Lys on growth performance and economics of 230- to 280-lb finishing pigs housed in a commercial environment and fed diets not containing ractopamine HCl. A total of 1,101 gilts (PIC L327 × 1050, initially 233.4 lb BW) were used in a 28-d growth trial. Pens were blocked by BW and were randomly assigned to diets with 27 pigs per pen and 7 pens per treatment in a randomized complete block design. Diets were corn and soybean meal-based and fed in meal form, with dietary …

Modeling The Effects Of Standardized Ileal Digestible Tryptophan:Lysine Ratio On Growth Performance Of 65- To 275-Lb Pigs, M. A. Goncalves, M. D. Tokach, S. S. Dritz, K, J. Touchette, N. M. Bello, J. M. Derouchey, J. C. Woodworth, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to model the effects of standardized ileal digestible (SID) Trp:Lys ratio on growth performance of 65- to 275-lb pigs. The present experiment, along with three previous experiments from Gonçalves et al. (2014), were used in the analysis. For all studies, dietary treatments consisted of SID Trp:Lys ratios of 14.5, 16.5, 18.0, 19.5, 21.0, 22.5, and 24.5%. The experiments were 21 d in duration and used corn and soybean meal-based diets with 30% dried distillers grains with solubles formulated to be deficient in Lys at the end of each of the experiments. In the current …

Effects Of Standardized Ileal Digestible Valine:Lysine Ratio On The Growth Performance And Economics Of Finishing Pigs From 55 To 100 Lb, M. A. Goncalves, J. Jacquez, M. D. Tokach, S. S. Dritz, K. J. Touchette, J. M. Derouchey, J. C. Woodworth, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

The objective of these experiments was to determine the effects of SID Val:Lys ratio in low CP and low lysine diets on the growth performance and economics of finishing pigs from 55 to 100 lb. In Exp. 1, a total of 1,134 gilts (PIC 337 × 1050, initially 68.8 lb BW) were used in a 19-d growth trial with 27 pigs per pen and seven pens per treatment in a randomized complete block design with pens blocked by initial average BW. There was a total of six dietary treatments: 59.0, 62.5, 65.9, 69.6, 73.0, and 75.5% SID Val:Lys ratio. In …

Effects Of Grinding Corn Through A 2-, 3-, Or 4-High Roller Mill On Pig Performance And Feed Preference Of 25- To 50-Lb Nursery Pigs, J. T. Gebhardt, J. A. De Jong, M. D. Tokach, J. C. Woodworth, J. M. Derouchey, R. D. Goodband, K. F. Coble, C. R. Stark, C. K. Jones, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 410 pigs were used in two experiments to determine the effects of grinding corn through various roller mill configurations on feed preference and performance of nursery pigs.

In Exp. 1, 320 pigs (DNA 400 × 200, initially 23.6 lb) were randomly allotted to 1 of 4 dietary treatments with 16 pens per treatment and 5 pigs per pen for a 21-d growth trial. The 4 dietary treatments used the same corn-soybean meal-based formulation that was mixed from the same batch of ingredients. Corn was ground through the same 4-high roller mill, but using different roller configurations. Experimental …

Effects Of Cultivar And Distillers Grains Supplementation On Grazing And Subsequent Finishing Performance Of Stocker Steers Grazing Tall Fescue Pasture, L. W. Lomas, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Four hundred thirty-two yearling steers grazing tall fescue pastures were used to evaluate the effects of fescue cultivar and dried distillers grains (DDG) supplementation during the grazing phase on available forage, grazing gains, subsequent finishing gains, and carcass characteristics. Fescue cultivars evaluated were high-endophyte ‘Kentucky 31’ and low-endophyte ‘Kentucky 31,’ ‘HM4,’ and ‘MaxQ.’ Steers were either fed no supplement or were supplemented with DDG at 1.0% body weight per head daily in 2009 or 0.75% of body weight per head daily in 2010, 2011, 2012, 2013, and 2014 while grazing. Steers that grazed pastures of low-endophyte ‘Kentucky 31,’ ‘HM4,’ or …

Effects Of Various Forage Systems On Grazing And Subsequent Finishing Performance, L. W. Lomas, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

A total of 200 mixed black yearling steers were used to compare grazing and subsequent finishing performance from pastures with ‘MaxQ’ tall fescue, a wheat-bermudagrass double-crop system, or a wheat-crabgrass double-crop system in 2010, 2011, 2012, 2013, and 2014. Daily gains of steers that grazed ‘MaxQ’ tall fescue, wheat-bermudagrass, or wheat-crabgrass were similar (P>0.05) in 2010, daily gains of steers that grazed wheat-bermudagrass or wheat-crabgrass were greater (P>0.05) than those that grazed ‘MaxQ’ tall fescue in 2011 and 2012, daily gains of steers that grazed wheat-crabgrass were greater (P>0.05) than those that grazed wheat-bermudagrass …

Effects Of Supplementation With Corn Or Dried Distillers Grains On Gains Of Heifer Calves Grazing Smooth Bromegrass Pastures, L. W. Lomas, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Thirty heifer calves grazing smooth bromegrass pastures were used to compare supplementation with 0.5% of body weight per head daily of corn or dried distillers grains (DDG). Daily gains of heifers supplemented with corn or DDG were similar (P>0.05).

Evaluation Of Supplemental Energy Source For Grazing Stocker Cattle, L. W. Lomas, J. K. Farney, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Thirty-six steers grazing smooth bromegrass pastures were used to evaluate the effects of a supplemental energy source on available forage, grazing gains, subsequent finishing gains, and carcass characteristics. Supplementation treatments evaluated were: no supplement, a supplement with starch as the primary source of energy, and a supplement with fat as the primary source of energy. Supplements were formulated to provide the same quantity of protein and energy per head daily. Supplementation with the starchbased or fat-based supplement during the grazing phase resulted in higher (P<0.05) grazing gains than feeding no supplement. Supplementation during the grazing phase had no effect (P>0.05) on finishing gain, feed intake, and feed:gain. Steers supplemented with the starch-based …

Effects Of Growth-Promoting Technologies On Feedlot Performance And Carcass Characteristics Of Crossbred Heifers, S. M. Ebarb, K. J. Phelps, J. E. Axman, C. L. Van Bibber, J. S. Drouillard, J. M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

The use of growth-promoting technologies has become a common practice in the beef cattle industry as producers strive for efficient growth and greater lean deposition. Two common technologies include exogenous hormonal implants and beta-adrenergic agonists (β-AA). Combination implants containing estrogen and testosterone increase muscle mass by elevating protein synthesis and/or reducing protein degradation. The increase in protein synthesis allows the animal to produce more lean muscle tissue. Optaflexx (Elanco Animal Health, Greenfield, IN) is a popular β-AA that works as a repartitioning agent to redirect nutrients toward muscle deposition and away from adipose tissue production. The two technologies utilize separate …