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Animal Sciences

2014

Kansas Agricultural Experiment Station Research Reports

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Effects Of Hard Red Winter Wheat Particle Size In Meal Diets On Finishing Pig Growth Performance, Diet Digestibility, And Caloric Efficiency (2014), Jon A. De Jong, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jason C. Woodworth, Chad B. Paulk, Cassandra K. Jones, Charles R. Stark, Steven S. Dritz Jan 2014

Effects Of Hard Red Winter Wheat Particle Size In Meal Diets On Finishing Pig Growth Performance, Diet Digestibility, And Caloric Efficiency (2014), Jon A. De Jong, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jason C. Woodworth, Chad B. Paulk, Cassandra K. Jones, Charles R. Stark, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 288 pigs (PIC 327 × 1050; initially 96.4 lb) were used in an 83-d study to determine the effects of hard red winter wheat particle size on finishing pig growth performance, diet digestibility, and caloric efficiency. Pens of pigs were balanced by initial BW and randomly allotted to 1 of 3 treatments with 8 pigs per pen and 12 pens per treatment. The same wheat-soybean meal—based diets were used for all treatments. Diets were fed in three phases in meal form. The 3 dietary treatments were hard red winter wheat ground with a hammer mill to 730, …


Influence Of Dietary Fat Source And Feeding Duration On Pig Growth Performance, Carcass Composition, And Fat Quality (2014), Ethan W. Stephenson, Mathew A. Vaughn, Derris D. Burnett, Chad B. Paulk, Michael D. Tokach, Steven S. Dritz, Joel M. Derouchey, Robert D. Goodband, Jason C. Woodworth, John M. Gonzalez Jan 2014

Influence Of Dietary Fat Source And Feeding Duration On Pig Growth Performance, Carcass Composition, And Fat Quality (2014), Ethan W. Stephenson, Mathew A. Vaughn, Derris D. Burnett, Chad B. Paulk, Michael D. Tokach, Steven S. Dritz, Joel M. Derouchey, Robert D. Goodband, Jason C. Woodworth, John M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

A total of 160 finishing pigs (PIC 327 × 1050; initially 100.5 lb) were used in an 84-d experiment to evaluate the effects of dietary fat source and feeding duration on growth performance, carcass characteristics, and fat quality. Dietary treatments included a corn-soybean meal control diet with no added fat or a 3 × 3 factorial with main effects of fat source (4% tallow, 4% soybean oil, or a blend of 2% tallow and 2% soybean oil) and feeding duration (d 0 to 42, 42 to 84, or 0 to 84). One pig was identified in each pen on d …


Effects Of Standardized Ileal Digestible Lysine Level And Added Tribasic Copper Chloride On Growth Performance, Carcass Characteristics, And Economics In Finishing Pigs (2014), Kyle F. Coble, Steven S. Dritz, J Usry, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jason C. Woodworth Jan 2014

Effects Of Standardized Ileal Digestible Lysine Level And Added Tribasic Copper Chloride On Growth Performance, Carcass Characteristics, And Economics In Finishing Pigs (2014), Kyle F. Coble, Steven S. Dritz, J Usry, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 1,267 pigs (PIC 337 × 1050; initially 58.3 lb) were used in a 120-d study. Before initiating the trial, pigs were fed a common diet for 9 d containing 188 ppm Cu from tribasic copper chloride (TBCC). On d 0, pens of pigs were allotted to 1 of 8 dietary treatments in a randomized complete block design with 26 to 27 pigs (similar number of barrows and gilts) per pen and 6 pens per treatment. Treatments were arranged in a split-plot design. Whole-plot treatments were 2 levels of the estimated standardized ileal digestible lysine (SID Lys) requirement …


Effects Of Pelleting And Diet Type On Growth Performance, Carcass Yield, And Iodine Value Of Finishing Pigs (2014), Jeremiah E. Nemechek, Michael D. Tokach, Steven S. Dritz, Robert D. Goodband, Joel M. Derouchey, Jason C. Woodworth Jan 2014

Effects Of Pelleting And Diet Type On Growth Performance, Carcass Yield, And Iodine Value Of Finishing Pigs (2014), Jeremiah E. Nemechek, Michael D. Tokach, Steven S. Dritz, Robert D. Goodband, Joel M. Derouchey, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 288 pigs (PIC 327 × 1050, initially 107.0 lb BW) were used in an 87-d trial to determine the effects of diet form and corn oil on growth performance, carcass yield, and iodine value (IV) of growing-finishing pigs. Treatments were arranged in a 2 × 3 factorial with the main effects of diet form and oil source. The 2 diet forms were meal or pellet. The 3 dietary formulations were: (1) corn-soybean meal—based control, (2) control with 30% dried distillers grains with solubles (DDGS) and 19% wheat middlings, and (3) control with 3% corn oil. No diet …


Effects Of Standardized Ileal Digestible Tryptophan:Lysine Ratio On Growth Performance And Economics Of 25- To 45-Lb Nursery Pigs (2014), Marcio Antonio Dornelles Goncalves, Michael D. Tokach, Steven S. Dritz, K J. Touchette, Nora M. Bello, Robert D. Goodband, Joel M. Derouchey, Jason C. Woodworth Jan 2014

Effects Of Standardized Ileal Digestible Tryptophan:Lysine Ratio On Growth Performance And Economics Of 25- To 45-Lb Nursery Pigs (2014), Marcio Antonio Dornelles Goncalves, Michael D. Tokach, Steven S. Dritz, K J. Touchette, Nora M. Bello, Robert D. Goodband, Joel M. Derouchey, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

The use of feed-grade tryptophan (Trp) in swine diets has become more economical recently due to the increased cost of soybean meal and the increased usage of dried distillers grains with solubles (DDGS). Therefore, the objectives of this study were to estimate the effects of the standardized ileal digestible (SID) tryptophan:lysine (Trp:Lys) ratio on growth performance and economics of 25- to 45-lb nursery pigs housed in a commercial environment. A total of 1,088 pigs (PIC 337 × 1050; initially 24.8 ± 1.2 lb BW) were used in a 21-d growth trial. Pigs were weaned at 16 d of age and …


Comparative Effects Of Dietary Copper, Zinc, Essential Oils, And Chlortetracycline On Nursery Pig Growth Performance (2014), Julie Ann Feldpausch, Jon A. Dejong, Michael D. Tokach, Steven S. Dritz, Jason C. Woodworth, Raghavendra G. Amachawadi, Harvey M. Scott, Jim L. Nelssen, Robert D. Goodband Jan 2014

Comparative Effects Of Dietary Copper, Zinc, Essential Oils, And Chlortetracycline On Nursery Pig Growth Performance (2014), Julie Ann Feldpausch, Jon A. Dejong, Michael D. Tokach, Steven S. Dritz, Jason C. Woodworth, Raghavendra G. Amachawadi, Harvey M. Scott, Jim L. Nelssen, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 350 weaned pigs (PIC 1050; initially 13.3 lb) were used in a 47-d study to compare the effects of feeding antibiotic alternatives (copper, zinc, and essential oils), alone or in combination, on nursery pig performance. Pigs were allotted to pens at weaning (d 0) and fed a common starter diet with no antimicrobial for 5 d before the start of the experiment. On d 5, pens of 5 pigs were allotted to 1 of 10 dietary treatments in a randomized complete block design with 7 replications per treatment. Dietary treatments were arranged in a 2 × 2 …


Performance And Health Effects Of Zuprevo 18% In Newly Received, Highly Stressed Beef Cattle (2014), Ethan R. Schlegel, Dale A. Blasi, William R. Hollenbeck, Brandon E. Oleen, David G. Renter, Mark F. Spire Jan 2014

Performance And Health Effects Of Zuprevo 18% In Newly Received, Highly Stressed Beef Cattle (2014), Ethan R. Schlegel, Dale A. Blasi, William R. Hollenbeck, Brandon E. Oleen, David G. Renter, Mark F. Spire

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to determine the health and performance effects of Zuprevo 18% (tildipirosin, 4 mg/kg body weight) during a 42-day backgrounding period when administered to high-risk transported cattle within 24 hours after arrival.


Heifer Calving Rate Is Lowly Heritable In Hereford Cattle (2014), Heather L. Bradford, Daniel W. Moser, Jennifer M. Bormann, Robert L. Weaber Jan 2014

Heifer Calving Rate Is Lowly Heritable In Hereford Cattle (2014), Heather L. Bradford, Daniel W. Moser, Jennifer M. Bormann, Robert L. Weaber

Kansas Agricultural Experiment Station Research Reports

Reproductive failure is consistently a top reason for culling beef cows from the herd. Culling young females is very costly to commercial producers because a young female hasn't generated enough income to pay for the cost of developing that female. One way to improve reproductive performance in the cowherd is through genetics. Although reproductive traits tend to be lowly heritable, genetic improvement can be made through selection. Beef producers traditionally have selected for increased scrotal circumference to improve female fertility. Scrotal circumference is an indicator trait and is positively correlated to female reproductive performance. Faster genetic improvement could be made …


Administration Of Prostaglandin To Beef Heifers At Time Of Artificial Insemination (2014), Sandra K. Johnson, John R. Jaeger Jan 2014

Administration Of Prostaglandin To Beef Heifers At Time Of Artificial Insemination (2014), Sandra K. Johnson, John R. Jaeger

Kansas Agricultural Experiment Station Research Reports

Transportation of sperm is a critical component of reproductive success. Another factor in reproductive success are the contractions of the uterine myometrium, which influence the number of sperm that reach the oviduct. prostaglandin F2α(PG) is present in bull semen and has a variety of functions in reproduction, including stimulating myometrial contractions. Evidence of improved fertility after administration of PG at breeding has been shown in the rabbit, sow, and cow. An injection of PG at the time of insemination improved conception rates in heifers inseminated with semen with only 30% motility. The objective of the study was to determine if …


Effects Of Corn Steep Liquor Supplementation On Performance And Herbivory Patterns Of Beef Cows Grazing Native Range Infested With Sericea Lespedeza (Lespedeza Cuneata) (2014), Garrett W. Preedy, K. C. Olson, Walter H. Fick, Leigh W. Murray Jan 2014

Effects Of Corn Steep Liquor Supplementation On Performance And Herbivory Patterns Of Beef Cows Grazing Native Range Infested With Sericea Lespedeza (Lespedeza Cuneata) (2014), Garrett W. Preedy, K. C. Olson, Walter H. Fick, Leigh W. Murray

Kansas Agricultural Experiment Station Research Reports

Increased grazing pressure on sericea lespedeza by beef cattle, the most economically relevant herbivore in the region, may slow its spread and facilitate some measure of biological control. Unfortunately, mature plants contain high levels of condensed tannins that decrease protein digestion by beef cattle, and these compounds are potent deterrents to grazing. Supplementing corn steep liquor has been shown to alleviate the negative effects associated with ingestion of condensed tannins when beef cattle are fed prairie hay contaminated with sericea lespedeza. In addition, beef cows supplemented with corn steep liquor did not discriminate between sericea lespedeza-contaminated and sericea lespedeza-free prairie …


Encapsulation Of Flaxseed In A Dolomitic Lime Matrix: Effects On Feedlot Performance And Carcass Characteristics Of Steers Vs. Heifers (2014), G. Feltrin, Christian A. Alvarado-Gilis, Cadra L. Van Bibber-Krueger, D. Klamfoth, James S. Drouillard Jan 2014

Encapsulation Of Flaxseed In A Dolomitic Lime Matrix: Effects On Feedlot Performance And Carcass Characteristics Of Steers Vs. Heifers (2014), G. Feltrin, Christian A. Alvarado-Gilis, Cadra L. Van Bibber-Krueger, D. Klamfoth, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

We have investigated the potential for using hydrated lime to form protective matrices with oil-rich feeds, such as flaxseed, to increase the incorporation of omega-3 fatty acids into meat. Dolomitic lime is mixed with ground flaxseed, water is added, the mixture is blended in a high-speed turbulizer, and the resulting material is then dried to form a granular matrix. During the manufacturing process, a portion of the hydrated lime becomes recarbonated. This recarbonated matrix is ruminally stable, which prevents rumen microbes from converting polyunsaturated oils to saturated fats. Additional recarbonation occurs in the rumen due to exposure to high concentrations …


Electrostatic Spray Cabinet Evaluation To Verify Uniform Delivery Of Chemical And Biological Solutions To Pre-Chilled Meat Animal Carcasses (2014), Randall C. Phebus, Nicholas J. Sevart, Nicholas W. Baumann, Randall K. Phebus Jan 2014

Electrostatic Spray Cabinet Evaluation To Verify Uniform Delivery Of Chemical And Biological Solutions To Pre-Chilled Meat Animal Carcasses (2014), Randall C. Phebus, Nicholas J. Sevart, Nicholas W. Baumann, Randall K. Phebus

Kansas Agricultural Experiment Station Research Reports

Shiga toxin-producing Escherichia coli (STEC) are a group of bacteria that cause an estimated 265,000 illnesses, 3,600 hospitalizations, and 30 deaths annually in the United States. STEC are frequently associated with raw or undercooked meat products, prompting the beef industry to develop and apply various antimicrobial intervention technologies during processing operations. The application of chemical antimicrobials to carcasses and fabricated cuts using an electrostatic spray (ESS) system (Figure 1) offers several potential advantages for controlling disease-causing pathogens, including enhanced chemical deposition (coverage) profiles, reduced overspray wastage of foodgrade antimicrobials, and reduced water requirements. The objectives of this study were to …


Quality Classification Affects Firmness Of Ground Beef Patties From The Chuck Roll (2014), Emily C. Pownall, Robert S. Mcewan, John A. Unruh, Sally L. Stroda Jan 2014

Quality Classification Affects Firmness Of Ground Beef Patties From The Chuck Roll (2014), Emily C. Pownall, Robert S. Mcewan, John A. Unruh, Sally L. Stroda

Kansas Agricultural Experiment Station Research Reports

Consumers often use color as the main criteria in selecting meat products, and they associate a bright red color with freshness. Longer display life without discoloration can result in more opportunities to sell the product and greater potential for profit. Flavor, juiciness, and tenderness are also associated with consumer satisfaction. Although grinding offers an opportunity to mechanically minimize differences in tenderness, product quality can affect these sensory properties of ground beef. The objective of this study was to determine the effects of three quality classifications and their combinations on ground beef patty display color stability and sensory attributes evaluated by …


Increasing Postmortem Aging Time Decreases Color And Flavor Stability Of Top Sirloin Steaks (2014), Garret J. Dietz, Terry A. Houser, Bryce M. Gerlach, Koushik Adhikari, John M. Gonzalez, John A. Unruh Jan 2014

Increasing Postmortem Aging Time Decreases Color And Flavor Stability Of Top Sirloin Steaks (2014), Garret J. Dietz, Terry A. Houser, Bryce M. Gerlach, Koushik Adhikari, John M. Gonzalez, John A. Unruh

Kansas Agricultural Experiment Station Research Reports

Top sirloin butts are commonly blade-tenderized to significantly increase tenderness, but minimal data have shown the relationship between blade tenderization and color stability as well as the effect of extended postmortem aging periods past 30 days on color stability. Tenderness plays a significant role in consumer satisfaction with beef products, and blade tenderization and extended postmortem aging periods are effective ways to ensure that beef cuts are tender. Therefore, the objectives of this study were to: (1) determine color and flavor stability of beef gluteus medius during extended postmortem aging times with and without mechanical tenderization, and (2) determine the …


Evaluating The Effectiveness Of Transport Media On Shiga Toxin-Producing E. Coli Serotypes (2014), Nicholas W. Baumann, A. West, Randall K. Phebus Jan 2014

Evaluating The Effectiveness Of Transport Media On Shiga Toxin-Producing E. Coli Serotypes (2014), Nicholas W. Baumann, A. West, Randall K. Phebus

Kansas Agricultural Experiment Station Research Reports

One of the key issues involved in accurately testing beef and the environment for the presence of specific bacteria, particularly pathogens such as Shiga toxin-producing Escherichia coli (STEC), is maintaining the viability of the microorganisms when transporting samples from the field to the laboratory. This process may take up to three days when considering collection, shipping and laboratory preparation times. Allowing the target bacteria to increase or decrease in numbers during transit is undesirable, so samples must be kept chilled and the media used for transport must offer a stable but non-nutritive environment. Three commonly used non-selective transport media were …


Wheat Straw Improved By Half-Rate Application Of Anhydrous Ammonia (2014), Justin W. Waggoner, R. Reid, Brandon E. Oleen, William R. Hollenbeck, Jody G. Holthaus, A. Sexten, J. Petersilie, Robert L. Weaber, S. Johnson, Dale A. Blasi Jan 2014

Wheat Straw Improved By Half-Rate Application Of Anhydrous Ammonia (2014), Justin W. Waggoner, R. Reid, Brandon E. Oleen, William R. Hollenbeck, Jody G. Holthaus, A. Sexten, J. Petersilie, Robert L. Weaber, S. Johnson, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

Many tons of crop residues and other low-quality forages are produced in Kansas each year. Use of these forages often is limited by their low nutrient content and poor digestibility. The process of applying anhydrous ammonia to low-quality forages enhances their feeding value by increasing crude protein content and dry matter digestibility. In the summer of 2012, the persistence of drought conditions throughout Kansas reduced forage supplies and resulted in a dramatic increase in forage prices. In an effort to aid livestock producers, the K-State Beef Extension Specialist Team, in conjunction with the Livestock Production Program Focus Team, conducted wheat …


Determining The Optimal Sampling Method To Estimate The Mean And Standard Deviation Of Pig Body Weights Within A Population (2014), Chad B. Paulk, Michael D. Tokach, Steven S. Dritz, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband Jan 2014

Determining The Optimal Sampling Method To Estimate The Mean And Standard Deviation Of Pig Body Weights Within A Population (2014), Chad B. Paulk, Michael D. Tokach, Steven S. Dritz, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

The accuracy and precision of pig subsampling methods can determine the swine producer's ability to sell pigs at optimal market BW and reduce economic discounts. The first objective of this experiment was to determine the time required to weigh pigs for different sampling methods used to estimate the mean and SD of a population. The second objective was to define the optimal sampling method considering the time required to weigh pigs as well as the precision and accuracy of each sampling method. A total of 68 pens of pigs (359 × 1050, PIC, Hendersonville, TN; 169.8 lb BW) in 2 …


Generating Equations Using Meta-Analyses To Predict Iodine Value Of Pork Carcass Back, Belly, And Jowl Fat, Chad B. Paul, J R. Bergstrom, Michael D. Tokach, Steven S. Dritz, Derris D. Burnett, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, John M. Gonzalez Jan 2014

Generating Equations Using Meta-Analyses To Predict Iodine Value Of Pork Carcass Back, Belly, And Jowl Fat, Chad B. Paul, J R. Bergstrom, Michael D. Tokach, Steven S. Dritz, Derris D. Burnett, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, John M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

Meta-analyses used data from existing literature to generate equations to predict finishing pig back, belly, and jowl fat iodine value (IV) followed by a prospective study to validate these equations. The final database included 24, 21, and 29 papers for back, belly, and jowl fat IV, respectively. For experiments that changed dietary fatty acid composition, initial diets (INT) were defined as those fed before the change in diet composition and final diets (FIN) were those fed after. The predictor variables tested were divided into 5 groups: (1) diet fat composition (dietary % C16:1, C18:1, C18:2, C18:3, essential fatty acid [EFA], …


Effects Of A Novel Protease Enzyme (Cibenza Dp100) On Finishing Pig Growth Performance And Carcass Characteristics (2014), Ethan W. Stephenson, Joel M. Derouchey, J Escobar, Jason C. Woodworth, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz Jan 2014

Effects Of A Novel Protease Enzyme (Cibenza Dp100) On Finishing Pig Growth Performance And Carcass Characteristics (2014), Ethan W. Stephenson, Joel M. Derouchey, J Escobar, Jason C. Woodworth, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,170 pigs (PIC 337 × 1050; initial BW 56.3 lb) were used in a 131-d study to determine the effects of a protease enzyme on growth performance and carcass characteristics of finishing pigs. Dietary treatments consisted of: (1) a positive control diet formulated to provide 90% of the standardized ileal digestible (SID) lysine requirement for these pigs; (2) a negative control diet formulated to provide 90% of the SID lysine requirement minus the expected nutrient release (both amino acids and dietary energy) from the protease enzyme (CIBENZA DP100, Novus International, Inc., St. Charles, MO), and (3) the …


Effects Of 30% Dried Distillers Grains With Solubles And 5% Added Fat Prior To Slaughter On Growth Performance, Carcass Characteristics, And Economics Of Finishing Pigs (2014), Kyle F. Coble, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jason C. Woodworth, Steven S. Dritz Jan 2014

Effects Of 30% Dried Distillers Grains With Solubles And 5% Added Fat Prior To Slaughter On Growth Performance, Carcass Characteristics, And Economics Of Finishing Pigs (2014), Kyle F. Coble, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jason C. Woodworth, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two groups of pigs (n = 1,258, initially 233.2 lb; group 1 PIC 337 × 1050; group 2 PIC 327 × 1050) were used in a 20-d experiment to determine the effects of 30% dried distillers grains with solubles (DDGS) and 5% added fat prior to slaughter on growth performance, carcass characteristics, and economics of finishing pigs. There were a total of 20 replications per treatment. All pigs were fed a common diet with 30% DDGS until 20 d prior to slaughter, at which point they were weighed and allotted to dietary treatments. The dietary treatments were arranged in a …


Effects Of An Algae-Modified Montmorillonite Clay On Growth Performance Of Nursery Pigs Fed Diets Contaminated With Low Levels Of Deoxynivalenol (2014), Suzy Q. Fowler, Hyatt L. Frobose, Michael D. Tokach, Joel M. Derouchey, Steven S. Dritz, Robert D. Goodband, Jim L. Nelssen Jan 2014

Effects Of An Algae-Modified Montmorillonite Clay On Growth Performance Of Nursery Pigs Fed Diets Contaminated With Low Levels Of Deoxynivalenol (2014), Suzy Q. Fowler, Hyatt L. Frobose, Michael D. Tokach, Joel M. Derouchey, Steven S. Dritz, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 360 barrows (PIC 1050; initially 25.1 lb and 45 d of age) were used in a 21-d growth trial to evaluate the effects of an algae-modified montmorillonite clay (AMMC) on nursery pig performance when fed diets contaminated with low levels of deoxynivalenol (DON). Pigs were allotted to pens by weight, and pens were randomly assigned to 1 of 9 dietary treatments arranged in a 3 × 3 factorial with main effects of DON (0, 1.5 ppm, or 3.0 ppm) and AMMC inclusion (0, 0.17%, or 0.50% ). There were 5 pigs per pen and 8 pens per …


Validating A Dietary Approach To Determine Amino Acid:Lysine Ratios For Pigs (2014), Marcio Antonio Dornelles Goncalves, Michael D. Tokach, Steven S. Dritz, K J. Touchette, Joel M. Derouchey, Jason C. Woodworth, Robert D. Goodband Jan 2014

Validating A Dietary Approach To Determine Amino Acid:Lysine Ratios For Pigs (2014), Marcio Antonio Dornelles Goncalves, Michael D. Tokach, Steven S. Dritz, K J. Touchette, Joel M. Derouchey, Jason C. Woodworth, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

Standardized ileal digestible (SID) amino acid:lysine (AA:Lys) ratio experiments are commonly conducted to estimate the AA requirement of pigs relative to lysine (Lys) and allow for accurate diet formulation. The objective of the studies herein was to validate a dietary approach to determine the optimal SID AA:Lys ratio for pigs using tryptophan (Trp) as a model. Four 21-d experiments were conducted in which pigs (337 × 1050; PIC) were fed corn-soybean meal—based diets with 30% corn dried distillers grains with solubles (DDGS). A total of 1,188, 1,232, 1,204, and 1,183 pigs with initial BW of 28.5 ± 0.4, 50.1 ± …


Effects Of Pepsoygen Processing Method On Nursery Pig Growth Performance (2014), A B. Clark, Hyatt L. Frobose, Joel M. Derouchey, Michael D. Tokach, Steven S. Dritz, Robert D. Goodband, Jason C. Woodworth Jan 2014

Effects Of Pepsoygen Processing Method On Nursery Pig Growth Performance (2014), A B. Clark, Hyatt L. Frobose, Joel M. Derouchey, Michael D. Tokach, Steven S. Dritz, Robert D. Goodband, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 292 weanling pigs (PIC 327 × 1050; 13.3 ± 2.4 lb BW and 21 d of age) were used in a 31-d experiment evaluating the effects of alternative PepSoyGen processing methods for nursery pig diets. There were 11 replicate pens per treatment and 6 or 7 pigs per pen. At weaning, pigs were allotted to pens by initial weight to 1 of 4 treatments in a completely randomized design. A 3-phase diet series was used with treatment diets fed during Phase 1 (d 0 to 7) and Phase 2 (d 7 to 21), with a common diet …


Utilization Of Omega-3 Fatty Acids Is Improved By Embedding Flaxseed In A Matrix Of Dolomitic Lime Hydrate (2014), Christian A. Alvarado-Gilis, Cadra L. Van Bibber-Krueger, K. A. Miller, E. San Vito, G. Feltrin, D. Klamfoth, James S. Drouillard Jan 2014

Utilization Of Omega-3 Fatty Acids Is Improved By Embedding Flaxseed In A Matrix Of Dolomitic Lime Hydrate (2014), Christian A. Alvarado-Gilis, Cadra L. Van Bibber-Krueger, K. A. Miller, E. San Vito, G. Feltrin, D. Klamfoth, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Omega-3 fatty acids are essential nutrients for humans, but American diets are often deficient in these important long-chain fats. Incorporating greater proportions of omega-3 fatty acids into beef offers a means of increasing daily consumption of essential fats, while also enhancing the perceived value of beef. In cattle, dietary polyunsaturated fats are extensively hydrogenated into saturated fats by microbes in the rumen. This effectively decreases the efficiency of transfer for fats from the animal's diet into edible beef tissues, because the bacteria convert more than 90% of the polyunsaturated fats into saturated fats before they are absorbed into the animal's …


Comparison Of Conventional And Alltech Beef Pn Finishing Programs: Meat Color Characteristics (2014), Kelsey Phelps, K. A. Miller, Cadra L. Van Bibber-Krueger, J. Jennings, James S. Drouillard, John M. Gonzalez, Brandon E. Depenbusch Jan 2014

Comparison Of Conventional And Alltech Beef Pn Finishing Programs: Meat Color Characteristics (2014), Kelsey Phelps, K. A. Miller, Cadra L. Van Bibber-Krueger, J. Jennings, James S. Drouillard, John M. Gonzalez, Brandon E. Depenbusch

Kansas Agricultural Experiment Station Research Reports

To maximize efficiency and profit when producing beef, American producers currently employ a multitude of production programs that use feed additives such as Rumensin or Tylan (Elanco Animal Health, Greenfield, IN) and growth promotants such as implants and Optaflexx (Elanco Animal Health). Rumensin and Tylan fed in combination can improve average daily gain and feed efficiency, and utilizing growth promotants enhances feed efficiency, average daily gain, hot carcass weight, and yield grades of carcasses. Although these products improve production efficiency, they can affect meat quality characteristics such as retail shelf life, necessitating better understanding of how management decisions in the …


High-Dose Anabolic Implants Are Not All The Same For Growth And Carcass Traits Of Feedlot Steers: A Meta-Analysis (2014), Christopher D. Reinhardt Jan 2014

High-Dose Anabolic Implants Are Not All The Same For Growth And Carcass Traits Of Feedlot Steers: A Meta-Analysis (2014), Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

The beneficial effects of anabolic implants with respect to feedlot performance and carcass weight are nearly unequivocal. Although individual prospective studies may have concluded that there are no significant differences between implant dosages, modern production economics demand that any differences, however small, must be gleaned if they are real. The objective of this study was to conduct a meta-analysis of existing data from peer-reviewed as well as industry sources to compare the effects of different doses of anabolic implants on feedlot performance and carcass traits of steers.


Effects Of Increasing Crystalline Amino Acids In Sorghum- Or Corn-Based Diets On Nursery Pig Growth Performance (2014), Kyle E. Jordan, Jeremiah E. Nemechek, Marcio Antonio Dornelles Goncalves, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz, Joel M. Derouchey, Jason C. Woodworth Jan 2014

Effects Of Increasing Crystalline Amino Acids In Sorghum- Or Corn-Based Diets On Nursery Pig Growth Performance (2014), Kyle E. Jordan, Jeremiah E. Nemechek, Marcio Antonio Dornelles Goncalves, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz, Joel M. Derouchey, Jason C. Woodworth

Kansas Agricultural Experiment Station Research Reports

A total of 300 pigs (PIC 1050; initially 23.3 lb BW) were used in a 21-d study to compare the effects of increasing crystalline amino acids in sorghum- and corn-based diets on nursery pig growth performance. Treatments with 5 pigs per pen and 10 pens per treatment were arranged in a 2 × 3 factorial with main effects of grain source (sorghum vs. corn) and crystalline amino acid supplementation (low, medium, or high). Amino acid ratios to lysine as well as standardized ileal digestibility coefficients used were set by NRC (20123). Because replacing increasing amounts of soybean meal with crystalline …


Effects Of Milk, Pasteurized Milk, And Milk Replacer On Health And Productivity Of Dairy Calves (2014), Lindsey E. Hulbert, Sophia A. Trombetta, Jere A. Noel, Sonia J. Moisa Jan 2014

Effects Of Milk, Pasteurized Milk, And Milk Replacer On Health And Productivity Of Dairy Calves (2014), Lindsey E. Hulbert, Sophia A. Trombetta, Jere A. Noel, Sonia J. Moisa

Kansas Agricultural Experiment Station Research Reports

Our objectives were to determine the health and blood parameters before, during, and after weaning of 114 Holstein heifers fed either accelerated milk replacer (MR; 28% CP, 18% fat) or non-saleable milk (3.59 ± 0.28% true protein; 4.12 ± 0.37% fat) that was either pasteurized (PM) or raw (RM; refrigerated and fed collection). Calves were randomly assigned to feeding treatments at birth. Colostrum (1 L) was fed less than 14 hours after birth (MR and PM = pasteurized colostrum; RM = raw colostrum). All calves were bottle-fed 1.8 ± 0.20 L, 3 times daily; all calves were provided fresh water …


Udder Quality Is Moderately Heritable In Hereford Cattle (2014), Heather L. Bradford, Daniel W. Moser, Jennifer M. Bormann, Robert L. Weaber Jan 2014

Udder Quality Is Moderately Heritable In Hereford Cattle (2014), Heather L. Bradford, Daniel W. Moser, Jennifer M. Bormann, Robert L. Weaber

Kansas Agricultural Experiment Station Research Reports

Udder quality is an important factor related to cow longevity and calf performance. Cows with tighter udder suspension and smaller teats tend to have greater longevity. When cows stay in the herd longer, fewer replacement heifers need to be developed to maintain herd size. Pendulous, poorly suspended udders and large teats are difficult for newborn calves to nurse, and additional labor might be required to assist those calves. Cows with poor udder quality can have increased calf mortality because the calf struggles to nurse and consumes colostrum later. Because many beef producers sell calves by the pound at weaning, poor …


Consumption And Performance By Beef Heifers Provided Dried Distillers Grains In A Self-Fed Supplement Containing Either 10 Or 16% Salt While Grazing Flint Hills Native Grass (2014), N. T. Melton, Brandon E. Oleen, Christopher I. Vahl, Sean P. Montgomery, Ethan R. Schlegel, Dale A. Blasi Jan 2014

Consumption And Performance By Beef Heifers Provided Dried Distillers Grains In A Self-Fed Supplement Containing Either 10 Or 16% Salt While Grazing Flint Hills Native Grass (2014), N. T. Melton, Brandon E. Oleen, Christopher I. Vahl, Sean P. Montgomery, Ethan R. Schlegel, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

Optimizing cattle performance and maintaining pasture health are important considerations when striving to maximize profitability and sustainability on a Flint Hills pasture yearling grazing operation. The two growing seasons prior to initiation of this study were droughty and stressful to pastures. This situation provided an opportunity to evaluate the value of dried distillers grains with solubles (DDGS) as a self-fed supplement to ensure that nutritional resources were adequate for a 78-day grazing period. Grazing density was increased from 200 to either 225 or 250 lb of beef while simultaneously providing salt-limited DDGS supplements containing 10 and 16% salt, respectively.