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Other Animal Sciences

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2003

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Articles 1 - 30 of 90

Full-Text Articles in Life Sciences

The Optimal True Ileal Digestible Lysine Requirement For 22 To 45 Lb Pigs (2003), N A. Lenehan, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2003

The Optimal True Ileal Digestible Lysine Requirement For 22 To 45 Lb Pigs (2003), N A. Lenehan, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,440 pigs (initially 22.5 lb and 21 d after weaning) was used in a 21-d growth assay to determine the optimal lysine level to maximize growth performance of 22- to 45-lb pigs. Pigs were fed one of five dietary treatments with increasing dietary lysine (1.1, 1.2, 1.3, 1.4 and 1.5% true digestible lysine). All diets had the same soybean meal level with crystalline amino acids added to achieve the increasing lysine levels while maintaining a minimum ratio of all other amino acids to lysine. Average daily gain and feed efficiency improved linearly (P<0.01) with increasing dietary lysine. Although the response to lysine was linear (P<0.01), it would appear that pigs weighing between 22 and 45 lb require approximately 1.4% true digestible lysine (1.54% total lysine) to maximize growth performance.; Swine Day, 2003, Kansas State University, Manhattan, KS, 2003


The Effects Of Poultry Meal And Fishmeal On Growth Performance Of Weanling Pigs (2003), T P. Keegan, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz Jan 2003

The Effects Of Poultry Meal And Fishmeal On Growth Performance Of Weanling Pigs (2003), T P. Keegan, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 210 weanling pigs (initially 16.4 lb and 21 ± 2 d of age, PIC) was used to evaluate the effects of select menhaden fishmeal and stabilized poultry meal on growth performance of nursery pigs. Five dietary treatments were fed from d 0 to 28 after weaning. Diets included a control with no specialty protein products and diets with 2.5% and 5.0% fishmeal and poultry meal replacing the lysine provide by fishmeal at 2.9% and 5.9%. All the diets were formulated on an equal lysine basis. Overall (d 0 to 28), pigs fed diets containing fishmeal had greater …


Evaluation Of Different Soy Protein Concentrate Sources On Growth Performance Of Weanling Pigs (2003), N A. Lenehan, M R. Barker, N Z. Frantz, C N. Groesbeck, T Iwasawa, T P. Keegan, K R. Lawrence, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 2003

Evaluation Of Different Soy Protein Concentrate Sources On Growth Performance Of Weanling Pigs (2003), N A. Lenehan, M R. Barker, N Z. Frantz, C N. Groesbeck, T Iwasawa, T P. Keegan, K R. Lawrence, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Three experiments were conducted using 486 weanling pigs (216 in Experiment 1; 210 in Experiment 2; 60 in Experiment 3) to determine the effects of different soy protein concentrate (SPC) sources on growth performance. Soy protein concentrate source 1 is dried with a torus disk following the concentration of soy proteins. This drying procedure will generate some degree of heat and possibly mechanical forces somewhat similar to extrusion processing (Soycomil P®, ADM). Soy protein concentrate source 2 is dried by a different process, and then it is moist extruded (Profine E, Central Soya). Therefore, the objective of our study was …


Effects Of Increasing Dietary Lysine In Transition Diets On Nursery Pig Growth Performance (2003), J L. Usry, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2003

Effects Of Increasing Dietary Lysine In Transition Diets On Nursery Pig Growth Performance (2003), J L. Usry, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,400 weanling pigs (initially 13.6 lb) was used in a 9 d growth assay (d 4 to 13 postweaning) to determine the effects of increasing lysine in the transition diet on nursery pig growth performance. All pigs were fed a common SEW diet until d 4 after weaning. Pigs were then switched to experimental diets with total dietary lysine levels of 1.40, 1.50, 1.60, 1.70 or 1.80%. All diets were formulated to contain 20% soybean meal, with increasing amounts of synthetic amino acids to achieve desired amino acid concentrations in the diets. From d 4 to 9 …


Corn Particle Size And Pelleting Influence On Growth Performance, Fecal Shedding, And Lymph Node Infection Rates Of Salmonella Enterica Serovar Typhimurium (2003), M R. Barker, J Ernest Minton, Joel M. Derouchey, K M. Bond, D J. Lee, T E. Burkey, Steven S. Dritz Jan 2003

Corn Particle Size And Pelleting Influence On Growth Performance, Fecal Shedding, And Lymph Node Infection Rates Of Salmonella Enterica Serovar Typhimurium (2003), M R. Barker, J Ernest Minton, Joel M. Derouchey, K M. Bond, D J. Lee, T E. Burkey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Ninety-six pigs (initially 13.8 lb.) were used in a 28-d trial to determine the interactive effects between pelleting and particle size on Salmonella serovar Typhimurium shedding and colonization in a young growing pig model. The experiment was a 2 × 2 factorial arrangement consisting of meal or pelleted diets with fine or coarse ground corn. Pigs were fed the diets 1 wk pre-salmonella inoculation and allotted based on weight to one of four dietary treatments. For the main effect of particle size, pigs fed finer ground corn had significantly improved feed efficiency (P0.82). There was no difference in salmonella infection …


Effects Of Increasing Crystalline Lysine With Other Amino Acids On Growth Performance Of 85- To 135-Lb Gilts (2003), R G. Main, J Usry, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2003

Effects Of Increasing Crystalline Lysine With Other Amino Acids On Growth Performance Of 85- To 135-Lb Gilts (2003), R G. Main, J Usry, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,134 gilts (each initially 85 lb, PIC L337 x C22) was used in a 28-d experiment to evaluate the effects of replacing soybean meal with up to 8 lb/ton of crystalline Llysine HCl with other crystalline amino acids on growth performance. Gilts were randomly allotted to one of six experimental diets. Diets were corn-soybean meal-based with 3% added fat. Diets included a negative control containing 3 lb/ton of L-lysine HCl and formulated to 0.90% true ileal digestible lysine. Two additional diets were formulated with 3 lb/ton Llysine to 1.0% true ileal digestible lysine but with or without …


Use Of Dried Distiller’S Grains With Solubles For Swine Diets (2003), C W. Hastad, C N. Groesbeck, K R. Lawrence, N A. Lenehan, T P. Keegan, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz Jan 2003

Use Of Dried Distiller’S Grains With Solubles For Swine Diets (2003), C W. Hastad, C N. Groesbeck, K R. Lawrence, N A. Lenehan, T P. Keegan, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A large increase in the number of ethanol plants has lead to increased availability of dried distiller's grains with solubles (DDGS). New plants also have improved processing techniques, which makes DDGS more attractive to use in swine diets. Two experiments were conducted to determine the energy value of DDGS. In Experiment 1, 360 pigs (each initially 38.5 lb) were used in a 22 d growth assay. Treatments consisted of five corn-soybean meal-based diets with added wheat bran or soy oil to provide five different energy densities ranging from 1,390 to 1,604 Kcal/lb ME. The objective was to use responses to …


Comparison Of Antibiotics And Antimicrobial Alternatives On Growth Performance Of Weanling Pigs In A Commercial Environment (2003), T P. Keegan, Joel M. Derouchey, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz Jan 2003

Comparison Of Antibiotics And Antimicrobial Alternatives On Growth Performance Of Weanling Pigs In A Commercial Environment (2003), T P. Keegan, Joel M. Derouchey, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 320 weanling pigs (11.7 lb and 14 ± 3 d of age, PIC) was used to determine the effects of antibiotics and antimicrobial alternatives in diets for nursery pigs reared in a commercial environment. Pigs were fed one of 5 experimental diets: 1) control with no antimicrobials; 2) carbadox (50 g/ton); 3) Lacto- Sacc® (0.2%); 4) Bio-Plus® 2B (0.05%); or 5) Bio-Mosâ„¢(0.3%). Lacto Sacc® is a concentrated form of selected live yeast cells while Bio Plus® 2B contains two bacillus strains. Bio-Mosâ„¢ is a mannanoligosaccharide derived from yeast. Overall (d 0 to 31 postweaning), pigs fed the …


Effects Of Bioplus 2b And Levucell Sb On Weanling Pig Growth Performance And Fecal Shedding In Response To Oral Challenge With Salmonella Serovar Typhimurium (2003), M R. Barker, Jerome C. Nietfeld, J Ernest Minton, Steven S. Dritz Jan 2003

Effects Of Bioplus 2b And Levucell Sb On Weanling Pig Growth Performance And Fecal Shedding In Response To Oral Challenge With Salmonella Serovar Typhimurium (2003), M R. Barker, Jerome C. Nietfeld, J Ernest Minton, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Eighty-five pigs (initially 12.9 lb and 15 ±1 d of age) were used in two 28-d trials to determine the effects of the probiotics BioPlus 2B (a bacillus-based product from Chr. Hansen BioSystems), a source of Bacillus subtilis and Bacillus licheniformis, and Levucell SB (an active dry yeast product from Lallemand Animal Nutrition), a yeast (Saccharomyces cerevisiae) product that is a source of mannanoligosaccharides on growth and performance of Salmonella enterica serovar Typhimurium shedding in a young growing pig model. Pigs were fed one of five dietary treatments: 1) A control diet containing no probiotics or antibiotics; 2) the control …


Estimates Of Parameters Between Direct And Maternal Genetic Effects For Weaning Weight And Genetic Effects For Carcass Traits In Crossbred Cattle (2003), R.K. Splan, L.V. Cundiff, L.D. Van Vleck, Michael E. Dikeman Jan 2003

Estimates Of Parameters Between Direct And Maternal Genetic Effects For Weaning Weight And Genetic Effects For Carcass Traits In Crossbred Cattle (2003), R.K. Splan, L.V. Cundiff, L.D. Van Vleck, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Estimates of heritabilities and genetic correlations were obtained from weaning weight records of 23,681 crossbred steers and heifers, and carcass data of 4,094 crossbred steers using REML applied to animal models. Direct and maternal heritabilities for weaning weight were 0.14 and 0.19, respectively. The genetic correlation between direct and maternal weaning weight was negative (-0.18). Heritabilities for carcass traits of steers were moderate to large (0.34 to 0.60). Genetic correlations between direct genetic effects for weaning weight and carcass traits were small, except with hot carcass weight (0.70), ribeye area (0.29) and adjusted fat thickness (0.26). Genetic correlations of maternal …


Estimating The Impact Of Animal Health And Death Loss On Economic Performance Of Feedlot Cattle (2003), M. Irsik, Michael R. Langemeier Jan 2003

Estimating The Impact Of Animal Health And Death Loss On Economic Performance Of Feedlot Cattle (2003), M. Irsik, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

This study examined the impacts of animal health and death loss on the economic performance of feedlot cattle. Using data from two feedlots in western Kansas, the impact of animal health on economic performance was quantified. Death loss and the percentage of animals treated significantly impacted feed conversion, average daily gain, and cost of gain. Feed conversion for a pen of cattle was found to increase by 0.27 lb feed/lb gain and daily gain decreased by 0.08 lb/day for each percentage point increase in death loss. An increase in death loss from 1% to 2% increased cost of gain by …


Flavor Characterization Of Top Blade, Top Sirloin, And Tenderloin Steaks From A- And B-Maturity Carcasses Of High And Normal Ph (2003), E.J. Yancey, Michael E. Dikeman, K.A. Hachmeister, Edgar Chambers Iv, George A. Milliken, E. Westcott Jan 2003

Flavor Characterization Of Top Blade, Top Sirloin, And Tenderloin Steaks From A- And B-Maturity Carcasses Of High And Normal Ph (2003), E.J. Yancey, Michael E. Dikeman, K.A. Hachmeister, Edgar Chambers Iv, George A. Milliken, E. Westcott

Kansas Agricultural Experiment Station Research Reports

The infraspinatus muscle (top blade steak) from the chuck clod, the gluteus medius muscle (top sirloin steak) from the sirloin, and the psoas major muscle (tenderloin steak) from the loin were obtained from A- and B-maturity carcasses with either low-Slight or Small marbling and with either normal ultimate pH (5.7 or less) or high pH (6.0 or higher) to evaluate flavor profile characteristics. Muscles were aged for 7, 14, 21, and 35 days. A highly trained flavor-profile sensory panel evaluated charbroiled steaks from these muscles. Muscles from high pH (dark cutting) carcasses had less typical beef flavor identity and less …


Evaluation Of Consumer Reheating Methods For Destruction Of Listeria Monocytogenes In Frankfurters, M.T. Ortega, H. Thippareddi, Randall K. Phebus, James L. Marsden, Curtis L. Kastner Jan 2003

Evaluation Of Consumer Reheating Methods For Destruction Of Listeria Monocytogenes In Frankfurters, M.T. Ortega, H. Thippareddi, Randall K. Phebus, James L. Marsden, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

The USDA Food Safety and Inspection Service has issued a "zero tolerance" for Listeria monocytogenes in ready-to-eat meat and poultry products. The Food Safety and Inspection Service recommends that consumers "Reheat [hotdogs] until steaming" to reduce the risk of listeriosis. We evaluated L. monocytogenes survival on inoculated frankfurters after reheating using common, in-home consumer practices. Frankfurters were inoculated with a six-strain mixture of L. monocytogenes to an initial level of approximately 107 colony forming units (CFU)/gram. Eight inoculated franks for each treatment were cooked using boiling water, a conventional electric oven, or a microwave oven. L. monocytogenes recovery was calculated …


Evaluation Of Mechanical Probes Used On Uncooked Steaks To Classify Beef Longissimus Tenderness (2003), J.W. Stephens, Melvin C. Hunt, T.E. Lawrence, T.M. Loughin, John A. Unruh, Michael E. Dikeman Jan 2003

Evaluation Of Mechanical Probes Used On Uncooked Steaks To Classify Beef Longissimus Tenderness (2003), J.W. Stephens, Melvin C. Hunt, T.E. Lawrence, T.M. Loughin, John A. Unruh, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

We pooled the mechanical probe data from two experiments to develop regression equations to predict beef longissimus tenderness. Fifty-three USDA Select strip loins were evaluated at 2 days postmortem with three mechanical probes to predict trained sensory panel (TSP) tenderness and Warner-Bratzler shear force (WBSF) of cooked steaks aged 14 days. The sharp needle, sharp blade, and plumb bob probes were correlated to TSP tenderness (r=-0.51, -0.45, and -0.35, respectively)and WBSF (r=0.56, 0.53, and 0.36, respectively). Regression equations developed from sharp needle, sharp blade, and plumb bob probe measurements and L* (lightness) values accounted for 49, 50, and 47% of …


Rate Of Bloom Of Beef Longissimus Lumborum: Effects Of Muscle Temperature, Age, And Oxygen Exposure Time (2003), C.M. Trater, Melvin C. Hunt Jan 2003

Rate Of Bloom Of Beef Longissimus Lumborum: Effects Of Muscle Temperature, Age, And Oxygen Exposure Time (2003), C.M. Trater, Melvin C. Hunt

Kansas Agricultural Experiment Station Research Reports

Steaks from 12 loins were used to determine the best time and temperature combinations for blooming (development of a bright-red color) of the longissimus muscle at 2, 14, and 26 days postmortem. The lowest temperature (28°F) provided the fastest rate of bloom when the muscle was 2 days postmortem, and 30 minutes were needed to achieve 75% of final bloom color. For meat 14 days old, greater bloom occurred at 35 and 40°F than at 28°F. For meat 26 days old, rate of bloom was equal at all three temperatures. Thus, packers should bloom carcasses one-half hour at 28°F before …


Antimicrobial Effect Of Buffered Sodium Citrate, Alone Or Combined With Sodium Diacetate, On Total Aerobic Count Of Ground Beef Stored At 39°F (2003), E. Ceylan, James L. Marsden Jan 2003

Antimicrobial Effect Of Buffered Sodium Citrate, Alone Or Combined With Sodium Diacetate, On Total Aerobic Count Of Ground Beef Stored At 39°F (2003), E. Ceylan, James L. Marsden

Kansas Agricultural Experiment Station Research Reports

We studied the antimicrobial efficacy of buffered sodium citrate and a combination of buffered sodium citrate and sodium diacetate on natural aerobic microflora of ground beef stored at 39°F. For non-treated control and 1% buffered sodium citrate, total aerobic count gradually increased from 4.2 log colony forming units (CFU)/gram initially to 9.0 and 8.7 log CFU/gram, respectively, after 10 days. Both treatments reached the spoilage index number of 7.0 log CFU/gram after 5 days. A combination of 1% buffered sodium citrate and 0.1% sodium diacetate resulted in a total aerobic count of 5.9 log CFU/gram (below the spoilage index) after …


Energy Supplementation Of Steers Grazing Early-Season, Native Range: Effects On Grazing And Subsequent Finishing Performance And Carcass Merit (2003), Sean P. Montgomery, R.L. Packard, J.C. Forcherio, R.R. Scott, Dale A. Blasi Jan 2003

Energy Supplementation Of Steers Grazing Early-Season, Native Range: Effects On Grazing And Subsequent Finishing Performance And Carcass Merit (2003), Sean P. Montgomery, R.L. Packard, J.C. Forcherio, R.R. Scott, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

Crossbred beef steers (n = 328, initially 495 lb) were used to determine the effects of energy supplementation on grazing and subsequent finishing performance of steers grazing early-season, native range. Treatments consisted of either no supplemental energy or access to feeders containing a free choice, grain-based energy supplement. On the first day of the grazing period, steers were weighed and randomly allotted among eight pastures, providing four replications per treatment. Stocking density was 34% higher for supplemented than for unsupplemented pastures. At the end of the grazing period, steers were transported to a commercial feedlot and allowed ad libitum access …


Comparison Of Dried Full-Fat Corn Germ And Tallow In Finishing Feedlot Diets For Heifers (2003), M.J. Sulpizio, T.J. Kessen, E.R. Loe, Sean P. Montgomery, J.N. Pike, J.J. Sindt, R.T. Ethington, James S. Drouillard Jan 2003

Comparison Of Dried Full-Fat Corn Germ And Tallow In Finishing Feedlot Diets For Heifers (2003), M.J. Sulpizio, T.J. Kessen, E.R. Loe, Sean P. Montgomery, J.N. Pike, J.J. Sindt, R.T. Ethington, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

A trial was conducted using 588 finishing beef heifers (705 lb initially) to compare tallow and dried full-fat corn germ as supplemental energy sources. Pens of 20 to 50 heifers were fed finishing diets containing 1) tallow or 2) corn germ. The tallow diet contained (dry basis) 46% steam-flaked corn, 35% wet corn gluten feed, 3% alfalfa hay, 1.5% soybean meal, and 4% tallow. The corn germ diet contained 41% steam-flaked corn, 35% wet corn gluten feed, 3% alfalfa hay, and 10% corn germ. Diets provided 300 mg monensin, 90 mg tylosin, and 0.5 mg MGA per heifer daily and …


The Influence Of Chop Location On Pork Loin Quality (2003), J W. Homm, R C. Johnson, John A. Unruh Jan 2003

The Influence Of Chop Location On Pork Loin Quality (2003), J W. Homm, R C. Johnson, John A. Unruh

Kansas Agricultural Experiment Station Research Reports

Pork longissimus muscle quality characteristics were evaluated on 109 center cut boneless loins. After 21 d aging, loins were cut into 1-inch chops and allowed to bloom for 30 minutes before visual measurements (color, marbling and firmness) and instrumental color were recorded for each chop. Overall, visual color was the lightest on the anterior and posterior ends and was the darkest from approximately 50% to 80% of the length of the loin. Marbling was the highest at the posterior end, lowest in mid-loin, then higher toward the anterior end. Loins were the softest at the anterior end and became firmer …


The Effects Of Poultry Meal Source On Growth Performance Of Weanling Pigs (2003), T P. Keegan, C W. Hasted, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz Jan 2003

The Effects Of Poultry Meal Source On Growth Performance Of Weanling Pigs (2003), T P. Keegan, C W. Hasted, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 350 pigs (PIC, initially 19.7 lb and 22 ± 2 d of age) was used to evaluate the effects of select menhaden fishmeal and stabilized poultry meal source on growth performance of nursery pigs. Seven dietary treatments were fed from d 4 to 19 after weaning. Diets included a control with no specialty protein products and diets with 2.5% or 5% fishmeal, or two different sources of poultry meal (low or high ash content). All the diets were formulated on an equal lysine basis. The poultry meal replaced the lysine provided by fishmeal with inclusion rates of …


Effects Of L-Carnitine On Fetal Growth And The Insulin-Like Growth Factor System In Pigs (2003), A T. Waylan, B J. Johnson, J P. Kayser, D P. Gnad, J D. Dunn, E K. Sissom, James J. Higgins, J C. Woodworth Jan 2003

Effects Of L-Carnitine On Fetal Growth And The Insulin-Like Growth Factor System In Pigs (2003), A T. Waylan, B J. Johnson, J P. Kayser, D P. Gnad, J D. Dunn, E K. Sissom, James J. Higgins, J C. Woodworth

Kansas Agricultural Experiment Station Research Reports

Twelve sows were used to examine the effects of feeding L-carnitine from artificial insemination to mid-gestation on maternal circulating IGF-I and carnitine concentrations and fetal growth. Supplementing L-carnitine did not influence the serum concentration of IGF-I. However, sows that were fed carnitine had increased circulating plasma free carnitine. Litters from sows fed L-carnitine were heavier and had more fetuses. The increase in litter fetus number was not detrimental to other growth traits such as individual fetal weight or crown to rump length. Our study suggests that feeding L-carnitine to gestating sows is beneficial for fetal growth and development.; Swine Day, …


Comparison Of Antimicrobial Alternatives In Irradiated Diets For Nursery Pigs (2003), T P. Keegan, C W. Hasted, Joel M. Derouchey, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz Jan 2003

Comparison Of Antimicrobial Alternatives In Irradiated Diets For Nursery Pigs (2003), T P. Keegan, C W. Hasted, Joel M. Derouchey, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Previous research at Kansas State University indicated that irradiation can effectively reduce the bacteria concentration in nursery diets. Therefore, we hypothesized that eliminating bacteria in the feed via irradiation would provide a model to determine the effectiveness of antimicrobial alternatives. In a 27-d growth assay, 330 weanling pigs (13.2 lb and 18 ± 2 d of age, PIC) were fed one of 9 experimental diets: 1) control diet with no antimicrobials, 2) irradiated control diet with no antimicrobials, and the irradiated control diet with added: 3) carbadox (50 g/ton), 4) Probios® (1.6% from d 0 to 14 and 0.8% from …


Effects Of Extruded-Expelled Soybean Meal And Solvent Extracted Soybean Meal Level Of Growth Performance Of Weanling Pigs (2003), K R. Lawrence, C W. Hastad, C N. Groesbeck, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2003

Effects Of Extruded-Expelled Soybean Meal And Solvent Extracted Soybean Meal Level Of Growth Performance Of Weanling Pigs (2003), K R. Lawrence, C W. Hastad, C N. Groesbeck, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 350 weanling pigs (initially 15.7 lb) were used to evaluate the effects of soybean meal source and level on growth performance of early weaned pigs. Dietary treatments included a control diet containing no soybean meal, or diets containing 20% or 40% of either solvent extracted soybean meal (SBM) or extruded-expelled soybean meal (EESOY). The SBM and EESOY were analyzed for trypsin inhibitor (0.7 mg TI/g and 1.8 mg TI/g, respectively) to ensure quality, and actual crude protein values (46.9% and 48.3% as-fed, respectively) were used in diet formulation. From d 0 to 14, increasing EESOY decreased ADG …


Mechanical Probes Used On Uncooked Steaks Can Predict Cooked Beef Longissimus Tenderness, J. W. Stephens, J. A. Unruh, Michael E. Dikeman, M. C. Hunt, T. E. Lawrence, T. M. Loughin Jan 2003

Mechanical Probes Used On Uncooked Steaks Can Predict Cooked Beef Longissimus Tenderness, J. W. Stephens, J. A. Unruh, Michael E. Dikeman, M. C. Hunt, T. E. Lawrence, T. M. Loughin

Kansas Agricultural Experiment Station Research Reports

We investigated five mechanical probes, used on uncooked strip loin steaks at 2 days postmortem, to predict trained sensory panel (TSP) tenderness and Warner-Bratzler shear force (WBSF) of steaks aged 14 days. Twenty-nine USDA Select strip loins were evaluated with sharp needle, blunt needle, sharp blade, and blunt blade probes in parallel and perpendicular orientations to the length of the strip loin. A steak from each loin was also measured with a plumb bob probe in a parallel orientation and with a Miniscan for instrumental color. None of the perpendicular orientation measurements were correlated (P>0.05) to TSP tenderness. The …


Mannanoligosaccharides In Diets For Nursery Pigs (2003), C L. Jones, C W. Starkey, Joe D. Hancock Jan 2003

Mannanoligosaccharides In Diets For Nursery Pigs (2003), C L. Jones, C W. Starkey, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

A total of 168 pigs (average initial BW of 13.2 lb and avg initial age of 21 d) was used in a 35-d experiment to determine the effects of mannanoligosaccharides on growth performance of nursery pigs fed diets without antibiotics. Treatments were: 1) a positive control with carbadox added at 50 g/ton of diet, 2) a negative control without antibiotic, 3) the negative control with mannanoligosaccharides from dried Saccharomyces cerevisiae fermentation solubles (Bio-Mos added at 0.2% of the diet), and 4) the negative control diet with mannanoligosaccharides from the cell walls of yeast (Safmannan added at 0.1% of the diet). …


Effects Of A Prebiotic, Inulin, And A Direct Fed Microbial On Growth Performance Of Weanling Pigs (2003), N Z. Frantz, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz Jan 2003

Effects Of A Prebiotic, Inulin, And A Direct Fed Microbial On Growth Performance Of Weanling Pigs (2003), N Z. Frantz, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A 32-day growth study with a total of 252 weanling pigs (18 ± 3 d of age) was conducted to evaluate the effects of a prebiotic, Inulin (a fructooligosaccharide derivative of chicory), and a direct fed microbial (Lactobacillus strain) in diets for weanling pigs. Pigs were fed one of six experimental diets containing: 1) no antibiotic or prebiotic (negative control); 2) carbadox (50 g/ton, positive control); 3) direct fed microbial (DFM, 0.1%); 4) Inulin (0.5% and 0.2% of phase I and phase II diets, respectively); 5) carbadox plus DFM; or 6) carbadox plus Inulin. Pigs fed carbadox improved (P<0.04) ADG from d 0 to 14, 14 to 32, and overall (0 to 32) compared to pigs fed diets without carbadox. Pigs fed diets containing carbadox increased (P<0.01) ADFI from d 0 to 14 and tended to have increased (P<0.06) ADFI overall compared to pigs fed diets without carbadox. No differences in ADG or ADFI were seen for pigs fed diets containing either Inulin or the DFM compared to pigs fed diets without Inulin or DFM. Pigs fed the DFM had poorer feed efficiency d 0 to 14 (P<0.03), 14 to 32 (P<0.01), and overall (P<0.01) compared to those fed diets without DFM. Also, there was a trend for pigs fed diets containing Inulin to have poorer feed efficiency (P<0.07) from d 14 to 32 and overall when compared to pigs fed diets without Inulin. There were no additive responses for ADG or ADFI when Inulin or DFM were combined with carbadox. Pigs fed diets containing both the DFM and carbadox resulted in poorer feed efficiency (P<0.02) from d 14 to 32 and overall (0 to 32) than pigs fed diets without carbadox or DFM. Pigs fed the diet containing Inulin and carbadox had poorer feed efficiency from d 0 to 14 (P<0.04) compared to pigs fed diets without carbadox or Inulin. In summary, nursery diets containing either Inulin or the DFM did not enhance growth performance; however, carbadox improved ADG and ADFI.; Swine Day, 2003, Kansas State University, Manhattan, KS, 2003


The Effects Of Reducing Dietary Crude Protein And/Or Adding Chicory On Composition And Odor Of Stored Swine Manure (2003), S M. Hanni, C N. Groesbeck, M G. Young, K R. Lawrence, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2003

The Effects Of Reducing Dietary Crude Protein And/Or Adding Chicory On Composition And Odor Of Stored Swine Manure (2003), S M. Hanni, C N. Groesbeck, M G. Young, K R. Lawrence, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A feeding study was conducted to compare nutrient excretion and odor analysis of pigs fed either a conventional corn-soybean meal diet, or a diet formulated to minimize nutrient excretion and odors through use of crystalline amino acids, phytase, and nonsulfur containing trace minerals. These diets (0.85% true digestible lysine), were fed to pigs (each initially 130 lb) with or without chicory, a feed ingredient speculated to reduce odors in swine waste. Dietary treatments were arranged in a 2 x 2 factorial, with main effects of diet nutrient excretion potential (low or high) and chicory (0 or 10%). Twelve nonlittermate barrows …


Effects Of Increasing Ca:P Ratio In Diets Containing Phytase On Finishing Pig Growth Performance (2003), S M. Hanni, M R. Barker, N Z. Frantz, C N. Groesbeck, T P. Keegan, C W. Hastad, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz Jan 2003

Effects Of Increasing Ca:P Ratio In Diets Containing Phytase On Finishing Pig Growth Performance (2003), S M. Hanni, M R. Barker, N Z. Frantz, C N. Groesbeck, T P. Keegan, C W. Hastad, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 144 finishing pigs (72 barrows and 72 gilts, initially 85 lb) were used to determine the effects of calcium to total phosphorus (Ca:P) ratio in diets containing phytase on growth performance, carcass characteristics, and bone ash percentage. Pigs were housed in an environmentally regulated finishing building with two pigs per pen and six pens per sex per treatment in a randomized complete block design. Pigs were blocked by initial weight and sex, and then allotted to one of six dietary treatments. The dietary treatments were corn-soybean meal-based diets fed in three phases. In each phase, diets consisted …


Influence Of Carnichrome® On Energy Balance Of Gestating Sows (2003), M G. Young, J Noblet, F X. Aherne, Milgen J. Van, J C. Woodworth, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2003

Influence Of Carnichrome® On Energy Balance Of Gestating Sows (2003), M G. Young, J Noblet, F X. Aherne, Milgen J. Van, J C. Woodworth, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Twelve multiparous sows were utilized in a randomized complete block design to determine the effects of feeding diets with or without Carnichrome® (50 ppm carnitine and 200 ppb chromium picolonate) on the components of heat production (HP) in early, mid and late gestation. All sows were fed dietary treatments for the 28 d lactation, and the subsequent weaning to estrus and gestation periods. The kinetics of HP and its partitioning (basal or resting HP, activity HP, and short term thermic effect of feeding (TEFst)) were determined during three stages of gestation, early (weeks 5 or 6), mid (weeks 9 or …


Effect Of Added Fat On Performance Of Growing-Finishing Pigs In Commercial Conditions (2003), M G. Young, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2003

Effect Of Added Fat On Performance Of Growing-Finishing Pigs In Commercial Conditions (2003), M G. Young, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,040 pigs (half barrows and half gilts) was used in a 42-day experiment conducted in a commercial research facility to determine the influence of graded levels of added fat on growth performance, feed cost per pound of gain and margin over feed of growing-finishing pigs. The four dietary treatments were based on level of added dietary fat (0, 2, 4, or 6%), with the diets fed for a six-week period from 158 to 232 lb. Adding fat to the diet for pigs weighing 158 to 232 lb decreased ADFI, improved feed efficiency, increased cost per pound of …