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Other Animal Sciences

Kansas Agricultural Experiment Station Research Reports

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2002

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Articles 61 - 82 of 82

Full-Text Articles in Life Sciences

Effects Of Freezing And Location Within The Beef Longissimus Muscle (Strip Loin Steak) On Tenderness (2002), R.R. Timm, John A. Unruh, Michael E. Dikeman, Melvin C. Hunt, John E. Boyer, James L. Marsden Jan 2002

Effects Of Freezing And Location Within The Beef Longissimus Muscle (Strip Loin Steak) On Tenderness (2002), R.R. Timm, John A. Unruh, Michael E. Dikeman, Melvin C. Hunt, John E. Boyer, James L. Marsden

Kansas Agricultural Experiment Station Research Reports

Twenty-four USDA Select strip loins (IMPS 180) were aged (32°F) until 14 days postmortem and fabricated into longissimus muscle (strip loin) steaks (1-in. thick). Then, steaks were either cooked or stored at −20°F for an additional 17 days before they were thawed and cooked. Cores and sensory panel samples were removed from the medial, center, and lateral sections of each steak and locational identify maintained. In addition, a random composite of cubes from an entire steak was used for a sensory panel evaluation. Previously frozen steaks had lower Warner-Bratzler shear force (WBSF) values, less cooking loss, and a shorter cooking …

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Myofibrillar Structural Changes Caused By Marination With Calcium Phosphate Or Calcium Chloride And Sodium Pyrophosphate (2002), T.E. Lawrence, A.T. Waylan, Curtis L. Kastner Jan 2002

Myofibrillar Structural Changes Caused By Marination With Calcium Phosphate Or Calcium Chloride And Sodium Pyrophosphate (2002), T.E. Lawrence, A.T. Waylan, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Ultrastructural changes were studied in beef eye of round muscle after 120 hours marination in 0.5, 0.75, or 1.0% calcium phosphate (CaPO) or 2, 4, or 6% calcium chloride or 1% sodium pyrophosphate (CaCl+NaPO) solutions. Increasing the concentration of CaPO caused decreasing myofibril width and increasing myofilament degradation. Increasing the concentration of CaCl+NaPO caused increasing loss of I-band material. Marination of beef eye of round muscle in calcium phosphate or calcium chloride + sodium pyrophosphate solutions caused denaturation of myofibrillar proteins likely due to marinating solution acidity.

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Comparison Of The Beef Empire Days Index With Carcass Pricing For Ranking Beef Carcasses (2002), D.A. King, R.D. Jones, D.E. Schafer, Michael E. Dikeman Jan 2002

Comparison Of The Beef Empire Days Index With Carcass Pricing For Ranking Beef Carcasses (2002), D.A. King, R.D. Jones, D.E. Schafer, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Our study evaluated the effectiveness of the Beef Empire Days carcass index in ranking beef carcasses compared to rankings based on carcass prices. Two price sets were used: the average prices between January 1998 and June 2001, and a short-range price determined from the average prices between April and September of 2001. Additionally, carcass data from the top live-placing cattle were compared to the data of the highest indexing carcasses. The live show judges were very accurate in selecting for ribeye size. However, they selected cattle that were fatter, but did not marble as well as the high indexing carcasses. …

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Effects Of Weaning Age On Pig Performance In Three-Site Production (2002), R G. Main, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

Effects Of Weaning Age On Pig Performance In Three-Site Production (2002), R G. Main, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two trials (n = 5,728 weaned pigs) were conducted to determine the effects of weaning age (12 to 21.5 days) on pig performance in a three-site production system. The second trial also examined the effects of modifying nursery feed budgets according to weaning age. In both studies, wean-to-finish ADG, mortality rate, average pig gain per days postweaning, and pounds sold per pig weaned improved linearly as weaning age increased. The improvements in growth rate and mortality largely occurred in the initial 42- days post-weaning, with some ongoing growth improvement to slaughter. Modifying nursery feed budgets did not affect wean-to-finish growth …

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Effect Of Glycine Supplementation On Sulfur Amino Acid Use In Growing Cattle (2002), B.D. Lambert, C.A. Löest, Evan C. Titgemeyer Jan 2002

Effect Of Glycine Supplementation On Sulfur Amino Acid Use In Growing Cattle (2002), B.D. Lambert, C.A. Löest, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Previous research has suggested the possibility that the supply of glycine, a nonessential amino acid, might affect how efficiently cattle use methionine. This study was conducted to determine the role of glycine on methionine utilization in growing steers as well as how glycine might impact utilization of cysteine, an amino acid produced in the body from methionine. In Exp. 1, treatments were abomasal infusion of 2 or 5 g/day L-methionine and 0 or 50 g/day glycine in a factorial arrangement. Efficiency of methionine use was 27% in the absence of supplemental glycine, but 66% in its presence. Glycine supplementation by …

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Peroxide Treatment Of Feather Meal For Finishing Cattle (2002), C.A. Löest, C.M. Coetzer, Evan C. Titgemeyer, James S. Drouillard Jan 2002

Peroxide Treatment Of Feather Meal For Finishing Cattle (2002), C.A. Löest, C.M. Coetzer, Evan C. Titgemeyer, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Heifers (756 lb, 312 head) were used in a finishing study to evaluate the effects of peroxide-treated feather meal on animal performance and carcass characteristics. Diets contained 3.0% of peroxide-treated or untreated feather meal, and were fed ad libitum. Treatment of feather meal with hydrogen peroxide increased in situ protein degradabilities by 56%, but did not significantly alter feed intake or feed efficiencies. Although not statistically different, gains were 2.1% greater for heifers fed peroxide-treated feather meal. Hot carcass weights also averaged 6 pounds heavier for heifers fed diets containing peroxide-treated feather meal. Marbling tended to be lower, but carcasses …

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Garlic, Cold Storage And Heating Effects In Controlling Escherichia Coli O157:H7 In Ground Beef (2002), E. Ceylan, Melvin C. Hunt, Daniel Y.C. Fung, Curtis L. Kastner Jan 2002

Garlic, Cold Storage And Heating Effects In Controlling Escherichia Coli O157:H7 In Ground Beef (2002), E. Ceylan, Melvin C. Hunt, Daniel Y.C. Fung, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

This research evaluated the effect of garlic, cold storage and heating on Escherichia coli O157:H7 in ground beef patties. Ground beef (20% fat) inoculated with E. coli O157:H7 to an initial inoculum level of 8 log10 CFU/g, was mixed with 0.5, 1.0 and 1.5% garlic powder (wt/wt). Samples were stuffed into 1 inch diameter test tubes and incubated at 40°F for 24 hr. Tubes were heated to internal temperatures of 125, 130, 135, 140, 145, 155 and 160°F, and E. coli O157:H7 was enumerated. Garlic addition lowered E. coli O157:H7 survival in ground beef heated to 150 and 155°F, and …

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Factors Affecting The Price Paid For Spring-Yearling Bulls (2002), T.T. Marston, L.E. Wankel, Daniel W. Moser Jan 2002

Factors Affecting The Price Paid For Spring-Yearling Bulls (2002), T.T. Marston, L.E. Wankel, Daniel W. Moser

Kansas Agricultural Experiment Station Research Reports

Many factors are considered when commercial cow/calf producers buy bulls. Breeding system needs and breeder's preference determine which breed of bull will be purchased at a multi-breed sale. Our analysis of prices paid for bulls tested and sold through the Kansas Bull Test Station indicates that bull consigners' reputations and marketing techniques influence the price received for bulls at such an event. Individual performance and genetic potential are other areas of interest to bull buyers. Buying habits and prices indicate that commercial cow/calf operations use different traits, depending on the breed, to enhance their cowherd's production.

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Alternative Replacement Heifer Investment Strategies (2002), J. Fanning, T. Marsh, R. Jones Jan 2002

Alternative Replacement Heifer Investment Strategies (2002), J. Fanning, T. Marsh, R. Jones

Kansas Agricultural Experiment Station Research Reports

The effects of beef cow herd inventory management strategies on net income were evaluated in a historical simulation of a representative Kansas beef-cow herd. Constant inventory, counter-cyclical, and dollar-cost averaging strategies were compared to an optimal heifer replacement strategy. Results indicate that price and inventory signals can be used to time replacement heifer acquisition to improve profitability of the average Kansas producer.

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A Study Of The Chemical And Microbial Changes In Whole-Plant Corn Silage During Exposure To Air: Effects Of A Biological Additive And Sealing Technique (2002), M.E. Uriarte-Archundia, K.K. Bolsen, B.E. Brent Jan 2002

A Study Of The Chemical And Microbial Changes In Whole-Plant Corn Silage During Exposure To Air: Effects Of A Biological Additive And Sealing Technique (2002), M.E. Uriarte-Archundia, K.K. Bolsen, B.E. Brent

Kansas Agricultural Experiment Station Research Reports

The objectives of this study with whole-plant corn silage were to determine the effects of a biological additive and sealing technique on yeast and mold populations; and to examine the relationship between the microbial and chemical changes in the silages during exposure to air. Whole-plant corn was harvested at 80% milkline (36% DM), and ensiled at a density of 35 lb of fresh matter/ft3. Half of the pre-ensiled forage was treated with a biological additive (A) (Sil-All 4x4, Alltech, Inc.); the other half of the pre-ensiled forage was the untreated control (C). Half of the silos in the A and …

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Using Heart Girth To Determine Weight In Finishing Pigs (2002), C N. Groesbeck, K R. Lawrence, M G. Young, Robert D. Goodband, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 2002

Using Heart Girth To Determine Weight In Finishing Pigs (2002), C N. Groesbeck, K R. Lawrence, M G. Young, Robert D. Goodband, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Heart girth and body weight were measured on 100 growing-finishing pigs (50 to 273 lb) at the KSU Swine Teaching and Research Center. Heart girth, in inches, was measured using a cloth measuring tape. The tape was placed directly behind the front legs and then wrapped around the heart girth and read directly behind the shoulders. Heart girth was strongly correlated (R2=0 .98) with body weight, with the following regression equation: pig weight = 10.1709 × Heart girth - 205.7492. The 95% confidence interval shows the projected weight to be ±10 lb of the actual weight of the pig. To …

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Effects Of Increasing Ca:P Ratio In Diets Containing Phytase On Growth Performance Of Grow-Finish Pigs (2002), S M. Hanni, M R. Barker, C N. Groesbeck, T P. Keegan, K R. Lawrence, M G. Young, B W. James, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2002

Effects Of Increasing Ca:P Ratio In Diets Containing Phytase On Growth Performance Of Grow-Finish Pigs (2002), S M. Hanni, M R. Barker, C N. Groesbeck, T P. Keegan, K R. Lawrence, M G. Young, B W. James, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We used 144 growing-finishing pigs (72 barrows and 72 gilts; initially 85 lb) to determine the effects of calcium to total phosphorus (Ca:P) ratio on growth performance. Pigs were housed in an environmentally regulated finishing building with two pigs per pen and nine 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 four dietary treatments. The dietary treatments were corn-soybean meal-based diets fed in three phases. In each phase, diets consisted of a 1:1; 1.25:1; 1.5:1, and 2:1 Ca:P ratio. Diets were formulated to …

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Effects Of Increasing Lysine:Calorie Ratio In Pigs Grown In A Commercial Finishing Environment (2002), R G. Main, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

Effects Of Increasing Lysine:Calorie Ratio In Pigs Grown In A Commercial Finishing Environment (2002), R G. Main, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Seven experiments using 7,801 pigs (75 to 265 lb) were conducted to determine the biologic and economic effects of increasing dietary lysine in commercially reared grow-finish pigs. Each study was generally 28 d long and evaluated a different weight range of the grow-finish period for barrows (3 trials) and gilts (4 trials), respectively. All studies contained six dietary treatments of incrementally increasing lysine:calorie ratio. The primary response criteria measured were growth, carcass, and economic performance. Pigs fed high-energy diets in early finishing (<150 lb) have only moderate biological responses to a wide range of dietary lysine. However, increasing dietary lysine levels in late finishing (>150 lb) has more quantitatively significant effects on growth and carcass performance. Due the magnitude of the …

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Interactive Effects Among L-Carnitine, Paylean (Ractopamine⋅Hcl), And Dietary Energy Density On Commercial Finishing Pig Growth Performance And Carcass Characteristics (2002), B W. James, K Q. Owen, J C. Woodworth, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

Interactive Effects Among L-Carnitine, Paylean (Ractopamine⋅Hcl), And Dietary Energy Density On Commercial Finishing Pig Growth Performance And Carcass Characteristics (2002), B W. James, K Q. Owen, J C. Woodworth, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Growth performance and carcass characteristics were evaluated on 1,104 pigs fed combinations of L-carnitine, Paylean, and added fat in a 2 × 2 × 2 factorial arrangement. Dietary treatments of L-carnitine (0 or 50 ppm) and fat (0 or 6%) were initiated at approximately 97 lb. Paylean (0 or 9 g/ton) was fed for the last 4 weeks prior to market. Supplementing dietary carnitine did not affect (P>0.25) growth performance of pigs between 97 to 203 lb. The addition of 6% dietary fat improved (P<0.01) ADG and F/G during this period. During the last 4 weeks of the experiment, when Paylean was fed, a carnitine × Paylean interaction was observed (P<0.04) for ADG and F/G. Both carnitine and Paylean improved growth performance; however, the responses were not additive. Pigs fed added fat had improved (P<0.05) feed efficiency during the Paylean supplementation period. A carnitine × Paylean interaction (P<0.03) was observed for fat thickness and percentage lean. Fat thickness decreased and lean percentage increased in pigs fed carnitine or Paylean, but the responses were not additive. Pigs fed added fat had greater (P<0.01) fat thickness and lower percentage lean than pigs not fed added fat. A carnitine × Paylean × fat interaction was observed (P<0.04) for longissimus muscle area. In general, adding carnitine, Paylean or fat to the diet increased longissimus muscle area; however, the responses were not fully additive. Carcass weight was greater (P<0.01) for pigs fed 6% added fat and tended (P<0.07) to be greater for pigs fed carnitine. Adding Paylean to the diet increased (P<0.04) ultimate longissimus pH and reduced drip loss as measured by the filter paper method. Similar to other experiments, adding carnitine to the diet tended to decrease drip loss (P<0.06) as measured by the suspension method. These results suggest that adding Lcarnitine and Paylean to the diet increases ADG and that L-carnitine, Paylean, and fat improve feed efficiency when fed to late finishing pigs reared in a commercial facility. These data also support our previous research that demonstrated improvements in carcass characteristics of pigs fed L-carnitine.; Swine Day, Manhattan, KS, November 14, 2002

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Effects Of Different Protein Sources On Growth Performance Of Nursery Pigs (2002), K R. Lawrence, C W. Hastad, S M. Hanni, M R. Barker, B W. James, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2002

Effects Of Different Protein Sources On Growth Performance Of Nursery Pigs (2002), K R. Lawrence, C W. Hastad, S M. Hanni, M R. Barker, B W. James, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 170 weanling pigs (initially 16.4 lb) were used to evaluate the effects of alternative protein sources on growth performance of pigs fed from d 5 to 26 after weaning. All pigs were fed a common diet from weaning to d 5. The five dietary treatments were cornsoybean meal-based and included a control diet containing 10% dried whey, or the control diet with 5% select menhaden fish meal, 2.5% spray-dried blood cells, 3.73% enzymatically hydrolyzed wheat gluten (Source 1), or 3.51% flash-dried wheat gluten (Source 2). No differences were observed in overall ADG and ADFI; however, pigs fed …

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Evaluation Of Wheat Gluten And Spray-Dried Animal Plasma On Growth Performance Of Nursery Pigs (2002), K R. Lawrence, C W. Hastad, S M. Hanni, M R. Barker, B W. James, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2002

Evaluation Of Wheat Gluten And Spray-Dried Animal Plasma On Growth Performance Of Nursery Pigs (2002), K R. Lawrence, C W. Hastad, S M. Hanni, M R. Barker, B W. James, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 440 weanling pigs (initially 14.3 lb) were used in two studies to evaluate the effects of increasing wheat gluten (WG) and spray-dried animal plasma (SDAP) on growth performance of early weaned pigs. In Exp. 1, the six dietary treatments included a negative control, containing no wheat gluten or animal plasma, the control diet containing either 3, 6, 9, or 12% lightly modified spray-dried wheat gluten, and a positive control diet containing 5% spray-dried animal plasma. The diets containing 9% WG and 5% SDAP had the same amount of soybean meal to make a direct comparison of the …

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Evaluation Of The Effects Of Wheat Gluten Source And Animal Plasma Blends On The Growth Performance Of Nursery Pigs (2002), K R. Lawrence, S M. Hanni, C N. Groesbeck, C W. Hastad, M G. Young, B W. James, T P. Keegan, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2002

Evaluation Of The Effects Of Wheat Gluten Source And Animal Plasma Blends On The Growth Performance Of Nursery Pigs (2002), K R. Lawrence, S M. Hanni, C N. Groesbeck, C W. Hastad, M G. Young, B W. James, T P. Keegan, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 472 weanling pigs (initially 13.5 lb) were used in two experiments to evaluate the effects of wheat gluten source (WG) and combinations with spray-dried animal plasma (SDAP) on growth performance of nursery pigs. In Exp. 1, the five dietary treatments included a control diet containing 6% SDAP, wheat gluten that was enzymatically hydrolyzed (Source 1), and a non-hydrolyzed wheat gluten (Source 2). The wheat gluten sources replaced L-lysine HCl and replaced 50% or 100% of the spray-dried animal plasma. From d 0 to 7, 7 to 14, and 0 to 21, increasing wheat gluten decreased (linear; P<0.05) ADG. There were no differences between wheat gluten sources. Average daily feed intake decreased similar to ADG, with the exception that ADFI of pigs fed wheat gluten Source 2 had only a slight decreasing trend (P<0.11) from d 0 to 7. Pigs fed the diet containing 6% SDAP had the greatest ADG and ADFI from d 0 to 21. When the SDAP was replaced with either wheat gluten source, ADG and ADFI linearly decreased (P<0.01) but F/G improved (P<0.04). When pigs were fed the common diet from d 21 to 35, there were no differences (P<0.05) in ADG, ADFI or F/G. In Exp. 2, the six dietary treatments included a negative control with no SDAP or WG (0:0 ratio), 9% WG (100:0 ratio), 6.75% WG and 1.25% SDAP (75:25 ratio) combination, 4.5% WG and 2.5% SDAP (50:50 ratio) combination, 2.25% WG and 3.75% SDAP (25:75 ratio) combination, and a positive control with 5% SDAP (0:100 ratio). The wheat gluten (Source 1) was enzymatically hydrolyzed, but from a different lot than Exp. 1. From d 0 to 14, pigs fed 6% SDAP had numerically greater ADG and ADFI compared to pigs fed the negative control diet. However, replacing SDAP with increasing amounts of WG tended to decrease (P<0.10) ADG and ADFI. These results confirm the improved ADG and ADFI of pigs fed SDAP immediately after weaning. In these experiments, replacing SDAP with WG resulted in decreased ADG.; Swine Day, Manhattan, KS, November 14, 2002

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Effect Of Phytase Dosage And Source On Growth Performance Of Nursery Pigs (2002), B W. James, G L. Lynch, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

Effect Of Phytase Dosage And Source On Growth Performance Of Nursery Pigs (2002), B W. James, G L. Lynch, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A 28-d growth assay was conducted to determine the effect of phytase dosage and source on growth performance of nursery pigs. The nine experimental treatments were control diets (0.13, 0.18, and 0.23% available phosphorus) and phytase (100, 225, or 350 FTU or FYT/kg) from either Natuphos or Ronozyme P added to the 0.13% available P diet. The results of this experiment indicate that increasing available P or phytase level, through 0.23% available P and 350 FTU or FYT/kg, respectively, improves ADG and feed efficiency. Regression analysis of the ADG response indicated that, when adding less than 350 phytase units/kg, each …

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The Optimal True Ileal Digestible Threonine Requirement For Nursery Pigs Between 24 To 49 Lb (2002), B W. James, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

The Optimal True Ileal Digestible Threonine Requirement For Nursery Pigs Between 24 To 49 Lb (2002), B W. James, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A 22-d growth assay was conducted to determine the appropriate true ileal digestible threonine requirement to maximize growth performance of pigs between 24 and 49 lb. The 10 experimental treatments consisted of two basal diets (1.1% and 1.2% true ileal digestible lysine; 16.1% and 17.4% CP) with increasing levels of threonine (50, 55, 60, 65, 70% threonine:lysine). Pigs fed 1.2% true ileal digestible lysine had improved ADG and F/G compared to pigs fed 1.1% lysine, this suggest that the requirement was greater than 1.1% true ileal digestible lysine. There was a threonine × lysine interaction for feed efficiency. Pigs fed …

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The Optimal True Ileal Digestible Lysine Requirement For Nursery Pigs Between 27 To 44 Lb (2002), B W. James, C W. Hastad, K R. Lawrence, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

The Optimal True Ileal Digestible Lysine Requirement For Nursery Pigs Between 27 To 44 Lb (2002), B W. James, C W. Hastad, K R. Lawrence, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A 20-d growth assay was conducted to determine the appropriate true ileal digestible lysine requirement to maximize growth performance of pigs between 27 to 44 lb. The basal diet (1.0% true ileal digestible lysine; 20.1% CP) was corn-soybean meal-based and was formulated to contain 3% added fat. Sand was substituted with L-lysineâ‹…HCl to form the other treatment diets (1.1, 1.2, 1.3, and 1.4% true ileal digestible lysine). The positive control contained more soybean meal than the basal diet (44.2 vs. 32.2% of the diet) and no L-lysineâ‹…HCl to provide 1.3% true ileal digestible lysine. Growth performance improved (quadratic, P<0.04) with increasing true ileal digestible lysine and was maximized at 1.1% true ileal digestible lysine. Feed efficiency was better (quadratic, P<0.01) for pigs fed increasing true ileal digestible lysine and was best for pigs fed 1.3% true ileal digestible lysine. These results indicate that the true ileal digestible lysine requirement for the 27 to 44 lb pig is at least 1.1% for ADG and 1.3% for feed efficiency.; Swine Day, Manhattan, KS, November 14, 2002

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Pilus Genes In Escherichia Coli Isolated From Pigs With Diarrhea (2002), Jerome C. Nietfeld, T Yeary Jan 2002

Pilus Genes In Escherichia Coli Isolated From Pigs With Diarrhea (2002), Jerome C. Nietfeld, T Yeary

Kansas Agricultural Experiment Station Research Reports

A retrospective survey of the Kansas State Veterinary Diagnostic Laboratory records was made for Escherichia coli isolated from pigs with diarrhea. There were 111 E. coli isolates that carried genes for attachment pili that are necessary for E. coli to cause diarrhea. Of the 111 isolates, 103 had one pilus gene and eight had two pilus genes. The most common pilus type was the K88 pilus accounting for 73% of the isolates. All but one of the K88 isolates also carried at least one toxin gene indicating that they were virulent for pigs. The next most common pilus type was …

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Effect Of Dexamethasone Injection At Birth On Growth Performance Of Pigs From Birth To Weaning (2002), M G. Young, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2002

Effect Of Dexamethasone Injection At Birth On Growth Performance Of Pigs From Birth To Weaning (2002), M G. Young, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 82 litters were used in a 21-day study to evaluate the effect of injecting litters of pigs with dexamethasone within 24 hours of birth on growth rate from birth to weaning. Experimental treatments consisted of an injection of 1 mg dexamethasone solution (2mg/mL, Prolab Ltd, St. Joseph, MO) to all pigs within a litter, while pigs in control litters did not receive a dexamethasone injection. There was no difference in growth rate from birth to weaning between pigs injected with dexamethasone and control pigs. Number of pigs weaned per litter and preweaning mortality were not different. In …

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