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Kansas Agricultural Experiment Station Research Reports

2012

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Kansas Fertilizer Research 2011, Dorivar Ruiz Diaz Jan 2012

Kansas Fertilizer Research 2011, Dorivar Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

No abstract provided.


Field Research 2012, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2012

Field Research 2012, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

Includes research reports from these locations: East Central Kansas Experiment Field, Kansas River Valley Experiment Field, and Western Kansas Agricultural Research Centers.


Bedding Material In Dirt-Floor Pens Reduces Heat (2012), D.J. Rezac, Daniel U. Thomson, Christopher D. Reinhardt Jan 2012

Bedding Material In Dirt-Floor Pens Reduces Heat (2012), D.J. Rezac, Daniel U. Thomson, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Weather-related stressors are a well-recognized opponent to animal welfare and can have important ramifications for animal performance. Sound animal husbandry practices historically have attempted to diminish the effects of deleterious environmental factors. Providing aid to animals when temperatures are above or below their thermal neutral zone (TNZ) can improve animal welfare and/or performance. Because most breeds of cattle are not well equipped to deal with heat, the temperatures at which heat stress can begin to affect cattle can be surprisingly low. The onset of mild heat stress can occur at a temperature humidity index (THI1) value of 75, which can …


Comparative Efficacy Of Two Ivermectin Pour-On Anthelmintics In Beef Steers In A Commercial Feedyard (2012), A.J. Tarpoff, T. Guichon, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt Jan 2012

Comparative Efficacy Of Two Ivermectin Pour-On Anthelmintics In Beef Steers In A Commercial Feedyard (2012), A.J. Tarpoff, T. Guichon, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Generic products generally have a cost advantage for beef producers over brand-name products. Recently, many beef producers have debated whether to utilize generic anthelmintics in cow/calf herds and feeder cattle. If generics are to be justified, the products must be proven to have efficacy similar to the brand-name product. Previous studies have indicated that generic macrocyclic lactones are less effective in controlling gastrointestinal parasites of cattle than the original brand-name products. The objective of this study was to compare the efficacy of Vetrimec (Norbrook Laboratories Limited, Newry, Co. Down, Northern Ireland) pour-on and Ivomec (Merial Animal Health, Duluth, GA) pour-on …


Time Of Onset, Location, And Duration Of Lameness In Beef Cattle In A Commercial Feedyard (2012), T.M. Green, P.T. Guichon, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt Jan 2012

Time Of Onset, Location, And Duration Of Lameness In Beef Cattle In A Commercial Feedyard (2012), T.M. Green, P.T. Guichon, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Bovine lameness presents itself in a variety of forms. A number of predisposing factors have been reported, such as increased amounts of wet feces and mud from high rainfall; limb trauma from rocks, sticks, or handling facilities; inappropriate animal handling; or improper facility design. Trauma causes lameness directly and often provides an avenue for bacterial agents to enter and colonize a wound. Performance of lame cattle is diminished due to impaired ambulation, resulting in decreased feed intake and decreased body weight. The objective of this study was to determine the timing of the onset of lameness in feeder cattle and …


Delaying Implant In High-Risk Calves Has No Benefit For Health Or Feedlot Performance (2012), R.D. Munson, Daniel U. Thomson, Christopher D. Reinhardt Jan 2012

Delaying Implant In High-Risk Calves Has No Benefit For Health Or Feedlot Performance (2012), R.D. Munson, Daniel U. Thomson, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Bovine respiratory disease is the most common and costly disease in the beef industry. Calves affected by bovine respiratory disease have a 53-lb decrease in finished weights and decreased quality grades compared with healthy cattle. Many stressors influence post-arrival health and nutrient intake, including weaning, marketing, transportation, co-mingling, genetics, previous nutrition, and health history. These stressors can negatively affect the immune system at a time when the animal is more likely to be exposed to infectious agents within the bovine respiratory disease complex. Feed intake by stressed calves is low, and low nutrient intake likely increases the negative effects of …


Direct-Fed Microbials For Receiving Cattle Ii: Effects Of Proternative Stress Formula Fed In A Dry Suspension On Growth, Feed Intake, And Health Of Receiving Beef Heifers (2012), A.V. Siverson, M.E. Corrigan, James J. Higgins, Dale A. Blasi, Brandon E. Oleen Jan 2012

Direct-Fed Microbials For Receiving Cattle Ii: Effects Of Proternative Stress Formula Fed In A Dry Suspension On Growth, Feed Intake, And Health Of Receiving Beef Heifers (2012), A.V. Siverson, M.E. Corrigan, James J. Higgins, Dale A. Blasi, Brandon E. Oleen

Kansas Agricultural Experiment Station Research Reports

Enhanced preconditioning and nutritional management strategies are needed industrywide as a means of controlling stress and related health problems for freshly arrived stocker calves. Direct-fed microbials are feed additives that stimulate natural, nonpathogenic gut flora in an attempt to stimulate competition against potentially pathogenic gut flora. Previous research involving direct-fed microbials offered in a liquid suspension to lightweight stocker calves produced no effects on growth or health performance. Therefore, the objective of our study was to evaluate the effects of a directfed microbial offered as a dry suspension on feed intake, average daily gain, and morbidity of highly stressed beef …


Mga And Growth Promotants Administered To Beef Feedlot Heifers Have No Effect On Subsequent Oocyte Quality Or In Vitro Embryo Production (2012), N. Miller, David M. Grieger, Karol E. Fike Jan 2012

Mga And Growth Promotants Administered To Beef Feedlot Heifers Have No Effect On Subsequent Oocyte Quality Or In Vitro Embryo Production (2012), N. Miller, David M. Grieger, Karol E. Fike

Kansas Agricultural Experiment Station Research Reports

Beef feedlot heifers have the potential to serve as viable donors of oocytes post-slaughter for in vitro embryo production. Oocyte quality is a critical factor affecting the success of in vitro embryo production and can be influenced by factors such as age and reproductive status, ovarian follicle size, and nutritional status of the donor female. In a conventional feedlot setting, heifers are typically administered steroid-based growth promotants and fed melengestrol acetate (MGA) for suppression of estrus, which increases circulating concentrations of reproductive steroids, particularly estradiol. The effects of these management practices on oocyte quality and numbers are unknown. The purpose …


Presynchronizing Prostaglandin F2Α Injection Before Timed Artificial Insemination Co-Synch + Cidr Program (2012), Scott L. Hill, Stephanie Leeann Pulley, H.I. Jr. Mellieon, K. C. Olson, John R. Jaeger, Ryan M. Breiner, G.A. Perry, G.C. Lamb, Jeffrey S. Stevenson Jan 2012

Presynchronizing Prostaglandin F2Α Injection Before Timed Artificial Insemination Co-Synch + Cidr Program (2012), Scott L. Hill, Stephanie Leeann Pulley, H.I. Jr. Mellieon, K. C. Olson, John R. Jaeger, Ryan M. Breiner, G.A. Perry, G.C. Lamb, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Fixed-time artificial insemination is an effective management tool that reduces the labor associated with more conventional programs that require detection of estrus. The 7-day CO-Synch + controlled internal drug release (CIDR) insert protocol has been shown to effectively initiate estrus and ovulation in cycling and non-cycling suckled beef cows, producing pregnancy rates at or greater than 50% in beef cows. The gonadotropin- releasing hormone (GnRH) injection that begins the CO-Synch + CIDR program initiates ovulation in a large proportion of cows, particularly anestrous cows. The CIDR, which releases progesterone intravaginally, prevents short estrous cycles that usually follow the first postpartum …


Increasing Protein Supply To Pregnant Beef Cows When Energy Is Limited Does Not Improve Cow Or Calf Performance (2012), E.A. Bailey, Evan C. Titgemeyer, R.C. Cochran, Timothy J. Jones, K. C. Olson Jan 2012

Increasing Protein Supply To Pregnant Beef Cows When Energy Is Limited Does Not Improve Cow Or Calf Performance (2012), E.A. Bailey, Evan C. Titgemeyer, R.C. Cochran, Timothy J. Jones, K. C. Olson

Kansas Agricultural Experiment Station Research Reports

Pre- and postpartum deficiencies of metabolizable protein have been identified as potentially limiting to productivity of beef cows and calves. Pre-partum supplementation of forage-based diets with ruminally undegraded protein has increased weight gain and breeding performance in prior studies, but the level of ruminally degraded protein fed was not known. Feeding adequate ruminally degraded protein to beef cows maximizes the productivity of microbes in the rumen, so any benefits shown in prior work could have been attributed to increased ruminal fermentation. Our objectives were (1) to determine the value of supplementing ruminally undegraded protein when dietary ruminally degraded protein supply …


Effects Of Corn Steep Liquor Supplementation On Voluntary Selection Of Tallgrass Prairie Hay Contaminated With Sericea Lespedeza And Uncontaminated Tallgrass Prairie Hay (2012), G.J. Eckerle, L.A. Pacheco, K. C. Olson, John R. Jaeger Jan 2012

Effects Of Corn Steep Liquor Supplementation On Voluntary Selection Of Tallgrass Prairie Hay Contaminated With Sericea Lespedeza And Uncontaminated Tallgrass Prairie Hay (2012), G.J. Eckerle, L.A. Pacheco, K. C. Olson, John R. Jaeger

Kansas Agricultural Experiment Station Research Reports

Sericea lespedeza (Lespedeza cuneata) is classified as a noxious weed throughout the Great Plains. It produces copious amounts of seed annually and contains high levels of condensed tannins during much of the growing season, which deters grazing by large domestic herbivores. In Kansas alone, this plant infests approximately 600,000 acres of native range, reducing native grass production by up to 92%. Increased grazing pressure on sericea lespedeza by beef cattle may slow its spread and facilitate some measure of biological control. Feedstuffs or feed additives with tannin-binding properties may promote voluntary consumption of this plant by grazing beef cattle. In …


Influence Of Linpro And Dietary Copper On Feedlot Cattle Performance, Carcass Characteristics, And Fatty Acid Composition Of Beef (2012), C.A. Alvarado, C.C. Aperce, K.A. Miller, C.L. Van Bibber, S. Uwituze, James J. Higgins, James S. Drouillard Jan 2012

Influence Of Linpro And Dietary Copper On Feedlot Cattle Performance, Carcass Characteristics, And Fatty Acid Composition Of Beef (2012), C.A. Alvarado, C.C. Aperce, K.A. Miller, C.L. Van Bibber, S. Uwituze, James J. Higgins, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Human diets often contain high levels of saturated fatty acids that can have deleterious health consequences such as obesity, diabetes, and heart disease. In contrast, omega-3 fatty acids, which are essential for human nutrition, are consumed at relatively low levels despite of their positive effects on health. Natural sources of omega-3 fatty acids include fresh legumes, cool-season grasses, flaxseed, and fish oil. In spite of the fact that fresh forages often are a key part of the cattle diet, beef is a relatively poor source of omega-3 fatty acids because of biohydrogenation, the action of microorganisms in the rumen that …


Feeding Crude Glycerin Decreases Fecal Shedding Of E. Coli O157:H7 In Growing Cattle (2012), C. Aperce, James S. Drouillard Jan 2012

Feeding Crude Glycerin Decreases Fecal Shedding Of E. Coli O157:H7 In Growing Cattle (2012), C. Aperce, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Crude glycerin is a byproduct of ethanol production and is used as a carbohydrate source for cattle feed. Glycerin levels in previous studies have ranged from 0 to 20% of diet dry matter, and concentrations of 8% or less generally improve feedlot performance. At even low levels of glycerin, however, the activity of cellulolytic bacteria is depressed, ultimately leading to poorer fiber digestion. This observation suggests that glycerin may affect a specific population of bacteria in the gut. Crude glycerin can account for 8 to 10% of the weight of dried distillers grains with solubles, because it is one of …


A Commercially Available Srp Vaccine Reduces Prevalence Of E. Coli O157:H7 In Feces Of Beef Cattle Under Commercial Feedlot Conditions (2012), B.A. Butler, G.H. Loneragan, Daniel U. Thomson, Tiruvoor G. Nagaraja, Christopher D. Reinhardt Jan 2012

A Commercially Available Srp Vaccine Reduces Prevalence Of E. Coli O157:H7 In Feces Of Beef Cattle Under Commercial Feedlot Conditions (2012), B.A. Butler, G.H. Loneragan, Daniel U. Thomson, Tiruvoor G. Nagaraja, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Of all food safety challenges facing the beef industry, Escherichia coli O157:H7 has consistently presented the greatest economic remonstrance to meat packers and retailers. Cattle naturally shed E. coli O157:H7 in their feces, and it is a source of carcass contamination at harvest. If contaminated trim enters the food supply and is subsequently prepared incorrectly, it can lead to the human condition known as hemorrhagic colitis. In children or elderly people, an E. coli O157:H7 infection may lead to a more serious form known as hemolytic uremic syndrome, which is potentially lethal. Although the majority of previous research has been …


Aging Method, Usda Quality Grade, And Endpoint Temperature Affect Eating Quality Of Beef Longissimus Lumborum Steaks, E. Obuz, V. Gok, L. Akaya, Michael E. Dikeman Jan 2012

Aging Method, Usda Quality Grade, And Endpoint Temperature Affect Eating Quality Of Beef Longissimus Lumborum Steaks, E. Obuz, V. Gok, L. Akaya, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Tenderness is one of the most important factors affecting consumers' perceptions and acceptance of palatability. Tenderness is affected by both myofibrillar proteins and connective tissue content and quality. Both marbling and carcass maturity can have a significant effect on beef palatability, with higher consumer sensory scores generally given to USDA Choice loin steaks than to Select steaks for tenderness, juiciness, and overall palatability. Endpoint temperature can also have a significant effect, with higher endpoint temperatures generally decreasing palatability. Aging beef is a common practice in the meat industry because it increases tenderness and flavor development. The meat industry generally utilizes …


Steam-Generation Cooking Versus Dry Heat Convection Of Beef Roasts Differing In Connective Tissue (2012), L.J. Bowers, Michael E. Dikeman, Leigh W. Murray, Sally L. Stroda Jan 2012

Steam-Generation Cooking Versus Dry Heat Convection Of Beef Roasts Differing In Connective Tissue (2012), L.J. Bowers, Michael E. Dikeman, Leigh W. Murray, Sally L. Stroda

Kansas Agricultural Experiment Station Research Reports

Foodservice managers strive to control factors that affect yield, serving cost, and palatability of beef. Beef roasts are traditionally roasted at temperatures from 325°F to 350°F for both home and institutional use. Roasts relatively high in connective tissue cooked with moist heat generally are more tender than when cooked with dry heat. Roasts cooked to 150, 160, or 170°F could be expected to have cooking losses ranging from 20% to over 40%. The issue of cooking loss led Winston Industries to develop the CVap Cook and Hold Vapor Oven (Winston Industries, Louisville, KY). CVap technology controls evaporation by creating a …


Sodium Salicylate During The First 7 Days Of Lactation Affects The Entire Lactation (2012), Jaymelynn K. Farney, Laman Mamedova, J. Ernest Minton, J. F. Coetzee Jan 2012

Sodium Salicylate During The First 7 Days Of Lactation Affects The Entire Lactation (2012), Jaymelynn K. Farney, Laman Mamedova, J. Ernest Minton, J. F. Coetzee

Kansas Agricultural Experiment Station Research Reports

Inflammation has been proposed as a contributor to metabolic disorders in transition dairy cows. The purpose of this experiment was to determine if a non-steroidal anti-inflammatory drug, sodium salicylate (SS), benefits transition cows. At calving, 78 cows [primiparous (1P) n = 39; 2nd lactation (2P) n = 24; ≥3 lactations (3P) n = 15] were assigned alternately to either a control or SS treatment for 7 days and production responses were evaluated through the entire lactation. Treatment was administered via individual water bowls, delivering a mean of 123 ± 5.5 (mean ± standard deviation) grams salicylate per day during the …


Reinsemination Intervals After Timed Artificial Insemination Or Estrus-Detected Inseminations (2012), Jeffrey S. Stevenson Jan 2012

Reinsemination Intervals After Timed Artificial Insemination Or Estrus-Detected Inseminations (2012), Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

The objective was to quantify the reinsemination intervals of lactating dairy cows that were either inseminated at estrus or received a timed AI (TAI) at first service. Cows in Experiment 1 were enrolled in a TAI program before first AI after calving. Cows detected in estrus after 50 days in milk (DIM) were inseminated, whereas the remainder continued in the TAI program and were inseminated as scheduled. Cows in Experiment 2 also were enrolled in a TAI program and were inseminated accordingly at first service after calving. On day 7 after TAI, cows were assigned randomly to receive either saline …


Meta-Analysis Of The Effects Of Dietary Sugar On Intake And Productivity Of Dairy Cattle (2012), C. F. Vargas, Christopher D. Reinhardt, J. L. Firkins, Barry J. Bradford Jan 2012

Meta-Analysis Of The Effects Of Dietary Sugar On Intake And Productivity Of Dairy Cattle (2012), C. F. Vargas, Christopher D. Reinhardt, J. L. Firkins, Barry J. Bradford

Kansas Agricultural Experiment Station Research Reports

A meta-analysis was performed to determine the possible effects of dietary sugar on feed intake and milk production in lactating dairy cattle. The database used in this analysis included 18 treatment comparisons frozm 10 studies reported from 1985 through 2011. Treatment comparisons were used only if: (1) either sucrose (9 comparisons) or molasses (9 comparisons) replaced corn grain without adding fat; and (2) sugar added by treatment ranged from 2 to 5% of dry matter. First, responses to sucrose and molasses were compared to assess whether these sugar sources could be considered together. Statistical analysis provided no evidence for different …


Evaluation Of Yogurt With Enhanced Cysteine Content (2012), Soumya Bala, Karen A. Schmidt Jan 2012

Evaluation Of Yogurt With Enhanced Cysteine Content (2012), Soumya Bala, Karen A. Schmidt

Kansas Agricultural Experiment Station Research Reports

Amino acids are the building blocks of protein and assist with metabolism in the body. In the human body, the amino acid cysteine can be synthesized from methionine by the enzyme Î¥-cystathionase. Because certain human subpopulations such as those prone to cataracts have decreased Î¥-cystathionase activity, dietary cysteine may be beneficial. Nutritionally, yogurt mix is one of the best dairy food sources of methionine and cysteine, but the heat treatment used in manufacturing yogurt decreases the dietary availability of cysteine. Last year, it was shown that supplementing yogurt mixes with whey protein isolate (WPI) (>90% protein) and processing yogurt …


Director's Report Of Research In Kansas 2012, Kansas State University. Agricultural Experiment Station Jan 2012

Director's Report Of Research In Kansas 2012, Kansas State University. Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

This report contains the title, author, and publication information for manuscripts published by station scientists.


Southwest Research-Extension Center Field Day 2012 Jan 2012

Southwest Research-Extension Center Field Day 2012

Kansas Agricultural Experiment Station Research Reports

Each Field Day report consists of individual research reports on topics specific to the region, including cultural methods for most of the major crops grown in Kansas, mitigating the effects of weeds, insects, and disease associated with those crops, and irrigation. Research is conducted and reports written by staff of the K-State Research and Extension Southwest Research Extension Center.


Effect Of Sampling Method On The Accuracy And Precision Of Estimating The Mean Pig Weight Of The Population (2012), C B. Paulk, G L. Highland, K D. Haydon, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz Jan 2012

Effect Of Sampling Method On The Accuracy And Precision Of Estimating The Mean Pig Weight Of The Population (2012), C B. Paulk, G L. Highland, K D. Haydon, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Producers have adopted marketing strategies such as topping to help reduce economic losses from weight discounts at the processing plant. Despite adopting these strategies, producers are still missing target weights and incurring discounts. One contributing factor is the error of sampling methods that producers use to estimate the mean weight of the population to determine the optimal time to top pigs. The standard sample size that has been adopted by many producers is 30 pigs. Our objective was to determine the best method for selecting 30 pigs to improve the accuracy and precision of estimating the mean pig weight of …


Effect Of Diet Form And Feeder Adjustment On Growth Performance Of Nursery Pigs (2012), J E. Nemechek, E Fruge, E Hansen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effect Of Diet Form And Feeder Adjustment On Growth Performance Of Nursery Pigs (2012), J E. Nemechek, E Fruge, E Hansen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effect of feeder adjustment and diet form on growth performance of nursery pigs. In Exp. 1, a total of 210 nursery pigs (PIC 1050 × 327, initially 26.2 lb BW) were used in a 21-d trial. In Exp. 2, a total of 1,005 nursery pigs (Fast × PIC sows × TR4 boars, initially 31.1 lb BW) were used in a 28-d trial. Treatments in both experiments were arranged as 2 × 3 factorials with main effects of feeder adjustment and diet form. The 2 feeder adjustments consisted of a narrow feeder adjustment (minimum …


Meta-Analysis Comparing Growth Performance, Carcass Characteristics, And Water Usage Of Growing-Finishing Pigs Fed Using Conventional Dry And Wet-Dry Feeders (2012), S Nitikanchana, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

Meta-Analysis Comparing Growth Performance, Carcass Characteristics, And Water Usage Of Growing-Finishing Pigs Fed Using Conventional Dry And Wet-Dry Feeders (2012), S Nitikanchana, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Fifteen trials were used for meta-analyses comparing the effects of conventional dry (CD) and wet-dry (WD) feeders on growth performance, carcass traits, and water usage of growing-finishing pigs. The meta-analysis indicated that pigs fed with WD feeders consistently had greater (P<0.01) ADG (0.09 lb/d) and ADFI compared with those fed with CD feeders; however, although highly variable, no overall difference (P = 0.93) was observed in F/G. As a result of improved growth rate, final BW and HCW of pigs fed with WD feeders was 3.2% greater (P<0.01) than when fed with CD feeders. For carcass traits, backfat was greater (P<0.01) and percentage lean was lower (P<0.01) in pigs fed with WD feeders compared with those fed with CD feeders. Carcass yield and loin depth did not differ (P>0.14) among feeder types. Water usage for pigs fed with WD feeders was 0.4 gal/pig/d less (P = 0.02) than for pigs using CD feeders. Growing-finishing pigs fed with WD feeders had increased growth rate, feed intake, final BW, and HCW, but deposited more fat as indicated by greater backfat and lower percentage lean.; Swine Day, Manhattan, KS, November …


Effect Of Dietary Addition Of Denagard (Tiamulin) And Ctc (Chlortetracycline) On Pig Performance Immediately After Placement In The Finishing Barn (2012), S Nitikanchana, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effect Of Dietary Addition Of Denagard (Tiamulin) And Ctc (Chlortetracycline) On Pig Performance Immediately After Placement In The Finishing Barn (2012), S Nitikanchana, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,313 pigs (PIC 1050 × 337; initially 49 lb) were used in a 35-d study to determine the effects of adding Denagard (Tiamulin) and CTC (chlortetracycline) to feed on pig performance immediately after placement in the finisher barn. Pigs were transported from one nursery facility and placed into the finishing barn without maintaining pen integrity. Immediately after placement in the finishing barn, pens of pigs were weighed and randomly allotted to treatments arranged in a 2 × 2 factorial with main effects of Denagard (0 and 35 g/ton; Novartis Animal Health, Greensboro, NC) and chlortetracycline (CTC; 0 …


The Effects Of Microsource S On Growth Performance, Fecal Consistency, And Postcleaning Microbial Load Of Growing-Finishing Pigs (2012), S Nitikanchana, Joel M. Derouchey, J R. Bergstrom, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

The Effects Of Microsource S On Growth Performance, Fecal Consistency, And Postcleaning Microbial Load Of Growing-Finishing Pigs (2012), S Nitikanchana, Joel M. Derouchey, J R. Bergstrom, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,245 pigs (PIC 1050 × 337, initially 106 lb) were used in a 90-d study to determine the effects of MicroSource S (DSM Nutritional Products Inc., Parsippany, NJ) and diet type on growth performance, carcass traits, fecal consistency, pen cleaning time, and postcleaning microbial load in growing-finishing pigs raised under commercial conditions. Pens of pigs were balanced by initial weight and randomly allotted to 1 of 6 dietary treatments in a completely randomized design with 25 to 26 pigs per pen and 8 replications per treatment. Treatments were arranged as a 3 × 2 factorial with main …


The Effects Of Immunocastration And Dried Distillers Grains With Solubles Withdrawal On Growth Performance, Carcass Characteristics, Fatty Acid Analysis, And Iodine Value Of Pork Fat Depots (2012), M D. Asmus, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz Jan 2012

The Effects Of Immunocastration And Dried Distillers Grains With Solubles Withdrawal On Growth Performance, Carcass Characteristics, Fatty Acid Analysis, And Iodine Value Of Pork Fat Depots (2012), M D. Asmus, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,360 pigs (PIC 337 × 1050, initially 53.0 lb) were used in a 125-d study to determine the effects of dried distillers grains with solubles (DDGS) withdrawal post-immunocastration (IC; Improvest, Pfizer Animal Health, Kalamazoo, MI) on growth performance and carcass fat quality of growing-finishing pigs. Pens of pigs were randomly allotted by initial weight and gender (barrows or IC) to 1 of 3 dietary treatments with 8 replications per treatment for a total of 48 pens with 27 to 29 pigs per pen. Treatments were arranged in a 2 × 3 factorial with the main effects of …


Effects Of Xylanase In High-Co-Product Diets On Nutrient Digestibility In Finishing Pigs (2012), M D. Asmus, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effects Of Xylanase In High-Co-Product Diets On Nutrient Digestibility In Finishing Pigs (2012), M D. Asmus, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 36 pigs (PIC 337 × 1050; initially 185 lb BW) were used in a 14-d study to evaluate the effects of xylanase (Porzyme 9302; Danisco Animal Nutrition, St. Louis, MO) in growing-finishing diets varying in dietary fiber on nutrient digestibility. Pigs were randomly allotted to 1 of 6 dietary treatments in a 2 × 3 factorial. Main effects were increasing dried distillers grains with solubles (DDGS; 35, 42.5, and 50%) with or without xylanase (0 or 4,000 units xylanase per kilogram of diet. The 6 treatment diets were corn-soybean meal—based with 15% added wheat middlings (midds), with …


Determining The Effects Of Standardized Ileal Digestible Tryptophan:Lysine Ratio And Tryptophan Source In Diets Containing Dried Distillers Grains With Solubles On Growth Performance And Carcass Characteristics Of Finishing Pigs (2012), S Nitikanchana, J L. Usry, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2012

Determining The Effects Of Standardized Ileal Digestible Tryptophan:Lysine Ratio And Tryptophan Source In Diets Containing Dried Distillers Grains With Solubles On Growth Performance And Carcass Characteristics Of Finishing Pigs (2012), S Nitikanchana, J L. Usry, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 2,290 pigs (PIC 1050 × 337; initially 157 lb) were used to determine the effect of tryptophan source (L-tryptophan vs. soybean meal) and increasing SID tryptophan:lysine ratio in diets containing 30% dried distillers grains with solubles (DDGS) on finishing pig performance. Pens of pigs were balanced by initial weight and randomly allotted to 1 of 7 dietary treatments in a completely randomized design with 26 to 28 pigs per pen and 10 to 13 replications per treatment. Treatments were arranged as a 2 × 3 factorial with main effects of tryptophan source (L-tryptophan or soybean meal) and …