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Kansas Agricultural Experiment Station Research Reports

2015

Articles 31 - 60 of 156

Full-Text Articles in Life Sciences

Effects Of Grinding Corn Through A 2-, 3-, Or 4-High Roller Mill On Milling Characteristics, And Commercial Finishing Pig Growth Performance And Carcass Characteristics, J. T. Gebhardt, K. F. Coble, M. D. Tokach, J. M. Derouchey, R. D. Goodband, J. C. Woodworth, C. R. Stark, C. K. Jones, S. S. Dritz Jan 2015

Effects Of Grinding Corn Through A 2-, 3-, Or 4-High Roller Mill On Milling Characteristics, And Commercial Finishing Pig Growth Performance And Carcass Characteristics, J. T. Gebhardt, K. F. Coble, M. D. Tokach, J. M. Derouchey, R. D. Goodband, J. C. Woodworth, C. R. Stark, C. K. Jones, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 922 pigs [PIC TR4 × (FAST Large white × PIC Landrace), initially 88.3 lb] were used in a 97-d experiment to determine the effects of grinding corn through various roller mill configurations on milling characteristics as well as growth performance and carcass characteristics of finishing pigs in a commercial setting. Pens were randomly allotted to 1 of 4 experimental treatments by initial BW with 11 pens per treatment and 21 pigs per pen. All diets were fed in 5 phases with the same corn-soybean meal-based diets containing 20% dried distiller’s grains with solubles. Experimental treatments included: (1) …

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Finely Grinding Cereal Grains In Pelleted Diets Offers Little Improvement In Nursery Pig Growth Performance, G. E. Bokelman, J. A. De Jong, J. R. Kalivoda, A. Yoder, C. R. Stark, J. C. Woodworth, C. K. Jones Jan 2015

Finely Grinding Cereal Grains In Pelleted Diets Offers Little Improvement In Nursery Pig Growth Performance, G. E. Bokelman, J. A. De Jong, J. R. Kalivoda, A. Yoder, C. R. Stark, J. C. Woodworth, C. K. Jones

Kansas Agricultural Experiment Station Research Reports

Five experiments were conducted to determine the effects of corn particle size and diet form on nursery pig performance and feed preference. In Exp. 1, 192 nursery pigs (PIC 327 × 1050; initially 14.7 lb and 26 d of age) were used in a 35-d experiment. Pens of pigs were balanced by BW and allotted to 1 of 4 treatments with 6 pigs per pen and 8 pens per treatment. The same corn and soybean meal-based diet formulation was used for all treatments. The 2 × 2 factorial consisted of the main effects of corn particle size (400 vs. 700 …

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Evaluating The Accuracy Of The 3-Sieve Particle Size Analysis Method Compared To The 12-Sieve Method, G. E. Bokelman, S. C. Stewart, A. L. Baldridge, J. C. Woodworth, S. S. Dritz, J. R. Kalivoda, C. R. Stark, C. K. Jones Jan 2015

Evaluating The Accuracy Of The 3-Sieve Particle Size Analysis Method Compared To The 12-Sieve Method, G. E. Bokelman, S. C. Stewart, A. L. Baldridge, J. C. Woodworth, S. S. Dritz, J. R. Kalivoda, C. R. Stark, C. K. Jones

Kansas Agricultural Experiment Station Research Reports

The 3-sieve particle size analysis method was developed to estimate the particle size of ground grain within feed mills without the time and expense required for a 12-sieve analysis. The 3-sieve method is more simplistic because it is hand-shaken and uses fewer sieves but has drawbacks because it is not as precise as the 12-sieve method. Because shaking is not automated, technician variation may impact results. Furthermore, the accuracy of the original 3-sieve method has been questioned because the method was developed for corn between 400 to 1,200μm, and the industry now grinds various grains more finely. Some …

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Evaluating The Efficacy Of A Novel Phytase Source, J. R. Flohr, J. M. Derouchey, M. D. Tokach, S. S. Dritz, J. C. Woodworth, R. D. Goodband Jan 2015

Evaluating The Efficacy Of A Novel Phytase Source, J. R. Flohr, J. M. Derouchey, M. D. Tokach, S. S. Dritz, J. C. Woodworth, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 350 nursery pigs (PIC 1050 barrows, initially 33.2 lb and 49 d of age) were used in a 21-d study to determine the aP release curve for a novel phytase product (Microtech 5,000, VTR Bio-tech Co., Guangdong, China). Pigs were randomly allotted to pens at arrival to the facility, and on d 0 of the trial pens were allotted to 1 of 7 treatments in a randomized complete block design. There were 5 pigs per pen and 10 pens per treatment. Pigs were fed corn-soybean meal-based diets formulated to 1.25% SID lysine. A single batch of the …

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The Effects Of Increasing Organic Or Inorganic Zinc On Growth Performance And Carcass Characteristics Of Finishing Pigs, E. W. Stephenson, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, R. D. Goodband, S. S. Dritz Jan 2015

The Effects Of Increasing Organic Or Inorganic Zinc On Growth Performance And Carcass Characteristics Of Finishing Pigs, E. W. Stephenson, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, R. D. Goodband, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 3,390 pigs (PIC 337 × 1050; initially 63.2 lb), housed in three replicate barns, were used in this study to determine the influence of increasing organic or inorganic Zn sources on growth performance and carcass characteristics of finishing pigs. A total of 126 pens of pigs were allotted to 1 of 7 dietary treatments, with 24 to 27 pigs per pen and 14 to 17 replications per treatment. All diets contained a trace mineral premix that provided 55 ppm of Zn from ZnSO4. The seven experimental treatments were a control diet with no additional zinc …

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Effect Of Diet Type And Added Copper On Growth Performance, Carcass Characteristics, Energy Digestibility, Gut Morphology, And Mucosal Mrna Expression Of Finishing Pigs, K. F. Coble, D. D. Burnett, R. D. Goodband, J. M. Gonzales, J. Usry, M. D. Tokach, J. R. Pluske, J. M. Derouchey, J. C. Woodworth, S. S. Dritz, J. R. Flohr, M. A. Vaughn Jan 2015

Effect Of Diet Type And Added Copper On Growth Performance, Carcass Characteristics, Energy Digestibility, Gut Morphology, And Mucosal Mrna Expression Of Finishing Pigs, K. F. Coble, D. D. Burnett, R. D. Goodband, J. M. Gonzales, J. Usry, M. D. Tokach, J. R. Pluske, J. M. Derouchey, J. C. Woodworth, S. S. Dritz, J. R. Flohr, M. A. Vaughn

Kansas Agricultural Experiment Station Research Reports

A total of 757 pigs (PIC 337 × 1050, initially 60.8 lb) were used to determine the effects of added Cu (TBCC, tribasic copper chloride, IntelliBond C; Micronutrients, Inc., Indianapolis, IN) and diet type on growth performance, carcass characteristics, energy digestibility, gut morphology, and mucosal mRNA expression of finishing pigs. Pens of pigs were allotted to 1 of 4 dietary treatments, balanced on average pen weight in a randomized complete-block design with 26 to 28 pigs per pen and 7 replications per treatment. Treatments were arranged as a 2 × 2 factorial with main effects of diet type, a corn-soybean …

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Determining The Impact Of By-O-Reg+ In Diets With Or Without A Feed Grade Antibiotic On Growth Performance Of Nursery Pigs, L. L. Thomas, J. C. Woodworth, R. D. Goodband, J. M. Derouchey, M. D. Tokach, S. S. Dritz Jan 2015

Determining The Impact Of By-O-Reg+ In Diets With Or Without A Feed Grade Antibiotic On Growth Performance Of Nursery Pigs, L. L. Thomas, J. C. Woodworth, R. D. Goodband, J. M. Derouchey, M. D. Tokach, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 717 nursery pigs (PIC C-29 × 28 and PIC L3-1050 × 1040, initially 12.48 ± 0.10 lb) from two consecutive nursery groups were used in a 35-d growth study. The objective was to determine the impact of increasing levels of By-O-Reg+ in diets with or without 50 g/ton Carbadox. By-O-Reg+ is a unique mixture of essential oils primarily based on oregano. It utilizes encapsulation technology to stabilize the essential oils and is suggested to have antimicrobial-like properties. The present study evaluated growth performance of nursery pigs fed 1 of 6 dietary treatments that were arranged as a …

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Using Meta-Analyses To Generate Alternative Prediction Equations For The Space Requirements Of Finishing Pigs, J. R. Flohr, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. D. Goodband Jan 2015

Using Meta-Analyses To Generate Alternative Prediction Equations For The Space Requirements Of Finishing Pigs, J. R. Flohr, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

Data from existing literature examining the influence of floor space allowance on the growth of finishing pigs were used to develop prediction equations for ADG, ADFI, and G:F. Two sets of databases were used. The first database included information from studies examining the influence of floor space allowance. The second database included the aforementioned literature, along with papers examining the impact of floor space after pigs were removed from the pen (topping). The first database included 27, 25, and 25 papers for ADG, ADFI, and G:F, respectively. The second database included 30, 28, and 28 papers for ADG, ADFI, and …

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Application Of Alternative Floor Space Prediction Equations Using Microsoft Excel®, J. R. Flohr, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. D. Goodband Jan 2015

Application Of Alternative Floor Space Prediction Equations Using Microsoft Excel®, J. R. Flohr, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

The following information is related to the use of a spreadsheet tool designed to estimate the growth rate of finishing pigs provided varying floor space allowances. The spreadsheet is broken into four sections: 1) the adjustment observation section, 2) the estimate input section, 3) the database range information, and 4) the predicted performance output. Sections 1 and 2 allow users to input information to adjust the prediction equations to specific herd growth rates as well as information needed to calculate the growth rate estimates for different floor space allowances. This tool allows producers to utilize the prediction equations without having …

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Swine Day 2015 Supplements, R. D. Goodband, M. D. Tokach, S. S. Dritz, J. M. Derouchey, J. C. Woodworth Jan 2015

Swine Day 2015 Supplements, R. D. Goodband, M. D. Tokach, S. S. Dritz, J. M. Derouchey, J. C. Woodworth

Kansas Agricultural Experiment Station Research Reports

It is with great pleasure that we present the 2015 Swine Industry Day Report of Progress. This report contains updates and summaries of applied and basic research conducted at Kansas State University during the past year. We hope that the information will be of benefit as we attempt to meet the needs of the Kansas swine industry.

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Effects Of Cobalt Source On Rate And Extent Of Dry Matter And Fiber Degradation In Vitro, F. Vargas-Rodriguez, Gail Carpenter, J. Defrain, B. Bradford Jan 2015

Effects Of Cobalt Source On Rate And Extent Of Dry Matter And Fiber Degradation In Vitro, F. Vargas-Rodriguez, Gail Carpenter, J. Defrain, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Positive effects on fiber degradation have been observed when supplemental cobalt was fed to ruminants. This study tested the effects of cobalt carbonate (CoCarb) and cobalt glucoheptonate (CoGH) at different concentrations on in vitro fermentation rate, fermentation end-product concentrations, and degradation of feed dry matter and neutral detergent fiber. Compared to CoCarb, CoGH increased dry matter disappearance and neutral detergent fiber degradation when added at 1 part per million (ppm) cobalt or less. Furthermore, CoGH had limited effects on the biohydrogenation of long chain fatty acids, whereas CoCarb appeared to stimulate this process when added at more than 3 ppm …

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Effects Of Dietary Fat Source On Performance Of Lactating Dairy Cows Fed A Pre-Mixed Concentrate, C. Ylioja, C. Abney-Schulte, Rick A. Stock, B. Bradford Jan 2015

Effects Of Dietary Fat Source On Performance Of Lactating Dairy Cows Fed A Pre-Mixed Concentrate, C. Ylioja, C. Abney-Schulte, Rick A. Stock, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Inclusion of a pre-blended concentrate (OneTrak®, Cargill Inc., Blair, NE) in the total mixed ration (TMR) for dairy cows can simplify the daily mixing of dietary ingredients. A cow’s response to fat supplementation can be affected by other dietary ingredients; however, little is known about production responses to dietary fat in diets with high concentrations of non-forage fiber. This study evaluated cow performance in response to fat sources when the ration contained a pre-blended concentrate composed largely of a non-forage fiber source. Six pens of mid-lactation cows were studied; the addition of saturated fat (Energy Booster 100) and rumen-protected unsaturated …

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The Why’S, What’S, And How’S Of Timed Artificial Insemination Programs, J. Stevenson, L. Mendonca Jan 2015

The Why’S, What’S, And How’S Of Timed Artificial Insemination Programs, J. Stevenson, L. Mendonca

Kansas Agricultural Experiment Station Research Reports

This report summarizes the benefits of using timed artificial insemination (AI) programs in lactating dairy cows. Since its beginnings, use of Ovsynch has penetrated the dairy industry and is most prevalent in the Midwest and Northeast regions of the U.S. The timed AI program benefits farms that have difficulties with heat detection. Heat detection challenges can occur because of inadequate observation or poor expression of heat associated with footing conditions. Explanation of mechanisms associated with hormone injections are presented to justify the success of currently recommended timed AI programs.

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Dairy Research 2015 Supplements, B. Bradford Jan 2015

Dairy Research 2015 Supplements, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Kansas State University is pleased to present the 2015 Dairy Research Report of Progress.

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Nursing Reduction Strategies To Enhance Estrus In Lactating Sows And Effects On Performance Of Pigs To Market Weight, H. L. Frobose, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband, J. C. Woodworth, J. L. Nelssen, D. L. Davis Jan 2015

Nursing Reduction Strategies To Enhance Estrus In Lactating Sows And Effects On Performance Of Pigs To Market Weight, H. L. Frobose, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband, J. C. Woodworth, J. L. Nelssen, D. L. Davis

Kansas Agricultural Experiment Station Research Reports

A total of 135 sows (PIC 1050), ranging from parity 1 to 5 (2.6 ± 1.4), were used in 5 consecutive farrowing groups (February to August). The objectives were to evaluate different suckling reduction strategies for inducing lactational estrus and the effects on sow fertility and piglet growth. Litter size was equalized within parity (11.5 ± 1.1 piglets) at d 2 after farrowing. At d 18, sows were assigned to 1 of 5 treatments (n = 26 to 28) based on parity, farrowing date, and suckled litter size. Treatments were: 1) control; 2) sows that were paired within parity and …

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Influence Of Carcass Fat Iodine Value And Packaging Type On Shelf-Life Of Bacon Slices Packaged For Hotels, Restaurants, And Institutions (Hri), A. M. Tapian, B. L. Goehring, J. A. Unruh, B. M. Gerlach, G. D. Mccoy, J. M. Derouchey, R. C. Johnson, S. S. Dritz, J. M. Gonzales, M. J. Matney, T. A. Houser Jan 2015

Influence Of Carcass Fat Iodine Value And Packaging Type On Shelf-Life Of Bacon Slices Packaged For Hotels, Restaurants, And Institutions (Hri), A. M. Tapian, B. L. Goehring, J. A. Unruh, B. M. Gerlach, G. D. Mccoy, J. M. Derouchey, R. C. Johnson, S. S. Dritz, J. M. Gonzales, M. J. Matney, T. A. Houser

Kansas Agricultural Experiment Station Research Reports

Pork carcasses were selected for fat iodine value (IV) using a NitFom™ sensor. Carcasses were sorted into 3 IV categories, with the target IV range defined as 58 to 63 (low), 68 to 73 (intermediate), and 78 to 83 (high). Seventy-two pork carcasses were identified and bellies collected from both the right and left sides of the carcass for a total of 144 bellies in the study, with 48 bellies (24 carcasses) in each IV category. This experiment had 3 IV treatments, with an average measured carcass IV of 66.5 g/100g (low), 72.6 g/100g (intermediate), and 77.9 g/100g (high) and …

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Spinning Straw Into Milk: Can An All- Byproduct Diet Support Milk Production?, M. Hulett, C. Ylioja, T. Wickersham, B. Bradford Jan 2015

Spinning Straw Into Milk: Can An All- Byproduct Diet Support Milk Production?, M. Hulett, C. Ylioja, T. Wickersham, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Ruminants are able to consume feeds that are unsuitable for humans and monogastric animals, and thus contribute to increased efficiency of our food systems. This study evaluated the performance of dairy cows consuming a diet comprised almost entirely of byproduct feeds, compared with cows consuming a typical lactation diet. The hypothesis was that the byproduct diet could support 80 lb/day of milk production. Although milk production and crude feed efficiency decreased compared to the typical diet, feed efficiency expressed as human-edible output per human-edible input increased for the byproduct diet. This study highlights the unique and important role played by …

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Guanidinoacetic Acid As A Precursor Of Creatine For Cattle, M. Ardalan, E. Batista, C. Armendariz, E. Titgemeyer Jan 2015

Guanidinoacetic Acid As A Precursor Of Creatine For Cattle, M. Ardalan, E. Batista, C. Armendariz, E. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Creatine serves as an energy-storing molecule in muscle, and in mammals it can be synthesized in the liver from guanidinoacetic acid (GAA). With this study, we evaluated whether GAA supplementation would lead to creatine production in cattle similarly to other species. Because the synthesis of creatine from GAA requires the use of a methyl group, we also evaluated the effect of supplementing methionine, as a methyl group donor, on the synthesis of creatine.
Supplemental GAA did increase plasma concentrations of creatine. Also, blood concentrations of arginine, a precursor to GAA, were increased by GAA supplementation, suggesting that arginine use for …

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Evaluating An Ultrasonic Flaw Detector-Based Method To Characterize Solubility Of Whey Protein Concentrate, M. Hauser, J. Amamcharla Jan 2015

Evaluating An Ultrasonic Flaw Detector-Based Method To Characterize Solubility Of Whey Protein Concentrate, M. Hauser, J. Amamcharla

Kansas Agricultural Experiment Station Research Reports

One of the important characteristics of powders is their ability to quickly break down and disperse. Currently, the dairy foods industry does not have a reproducible method that can quantify this behavior. A previously developed method for an ultrasonic flaw detector was used to see if an ultrasound could characterize the dissolution of whey protein concentrate with a protein content of 80% (WPC80). For this study, an ultrasonic flaw detector equipped with a 1 MHz immersion transducer was operated in a pulse-echo mode. WPC80 was aged at 25°C and 40°C for 3 weeks. After powder addition, ultrasound, focus beam reflectance …

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The New Safety Net: Dairy Margin Protection Program Participation And Payouts, R. Reid Jan 2015

The New Safety Net: Dairy Margin Protection Program Participation And Payouts, R. Reid

Kansas Agricultural Experiment Station Research Reports

The Dairy Margin Protection Program created by the 2014 Farm Bill offers a new risk management option available for dairy producers. By “insuring” a margin between the price of milk and the cost of feed inputs, producers can have protection from declining milk prices, rising feed costs, or both. More than half of the dairies in the U.S. participated in at least the catastrophic level of coverage for 2014, which locks them into participating through 2018 when a new Farm Bill is written. Coverage level and production history enrolled can change year to year however; therefore, each year producers will …

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Effects Of Growth-Promoting Technologies On Feedlot Performance And Carcass Characteristics Of Crossbred Heifers, S. M. Ebarb, K. J. Phelps, J. E. Axman, C. L. Van Bibber, J. S. Drouillard, J. M. Gonzalez Jan 2015

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

Kansas Agricultural Experiment Station Research Reports

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

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Effects Of Growth-Promoting Technologies On Muscle Structural Characteristics And Meat Tenderness, S. M. Ebarb, J. S. Drouillard, K. J. Phelps, J. A. Noel, M. A. Vaughn, D. D. Burnett, J. M. Gonzalez Jan 2015

Effects Of Growth-Promoting Technologies On Muscle Structural Characteristics And Meat Tenderness, S. M. Ebarb, J. S. Drouillard, K. J. Phelps, J. A. Noel, M. A. Vaughn, D. D. Burnett, J. M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

Skeletal muscle tissue consists of two main structures that elicit strong influences on cooked meat tenderness: myofibrillar and connective tissues. The myofibrillar component consists of contractile and cytoskeletal proteins that aid in muscle contraction and support. A large portion of meat science literature documents the effects that postmortem aging elicits in terms of weakening the myofibrillar component to improve tenderness. Connective tissue is primarily comprised of collagen, the most abundant protein within the body. The function of this tissue is to support the myofibrillar component and transfer the force of contraction. Collagen, characterized by its solubility, is most commonly identified …

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Effects Of Postmortem Aging Time And Muscle Location On Objective Measures Of Semitendinosus Steak Tenderness, M. B. Da Silva, L. D. F. Miranda, K. J. Phelps, S. M. Ebarb, C. L. Van Bibber, T. G. O'Quinn, J. S. Drouillard, J. M. Gonzalez Jan 2015

Effects Of Postmortem Aging Time And Muscle Location On Objective Measures Of Semitendinosus Steak Tenderness, M. B. Da Silva, L. D. F. Miranda, K. J. Phelps, S. M. Ebarb, C. L. Van Bibber, T. G. O'Quinn, J. S. Drouillard, J. M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

Beef tenderness is the most important trait affecting consumer beef eating satisfaction. Cuts from muscles with superior tenderness (tenderloin, ribeye, striploin) are consequently most highly valued, but because of recent record-high beef prices, the need to identify more economical cuts that will meet consumer expectations for tenderness is greater than ever. The eye of round (Semitendinosus) has traditionally been marketed as a lower-value cut, primarily owing to its inherent toughness. Tenderness improves throughout postmortem aging and continues to improve in muscles aged for greater than 35 days. Retail steaks from theSemitendinosusreceive, on average, 17 days of …

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Evaluation Of The Productivity Of A Single Subcutaneous Injection Of Longrange In Stocker Calves Compared With A Positive (Dectomax) And A Negative (Saline) Control, A. C. Vesco, A. K. Sexten, C. S. Weibert, B. E. Oleen, W. R. Hollenbeck, L C. Grimes, Dale Blasi Jan 2015

Evaluation Of The Productivity Of A Single Subcutaneous Injection Of Longrange In Stocker Calves Compared With A Positive (Dectomax) And A Negative (Saline) Control, A. C. Vesco, A. K. Sexten, C. S. Weibert, B. E. Oleen, W. R. Hollenbeck, L C. Grimes, Dale Blasi

Kansas Agricultural Experiment Station Research Reports

Subclinical parasitism is commonly observed in stocker cattle. Treatment of internal parasites helps to improve weight gains, feed conversion, and immune status and decreases morbidity and mortality of beef cattle (Hawkins, 1993). Some of the most concerning classes of internal parasites includeCooperia,Haemonchus, andOstertagia. Commonly used anthelmintics come in the form of pour-ons, oral drenches, and subcutaneous injections. A majority of these drugs are designed to be administered in a single dose and provide defense against stomach worms for approximately 14 to 42 days, but the typical grazing season lasts for approximately 120 days. For …

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Genetic Improvement Made Through Dna Testing And Artificial Insemination To High- Growth, High Carcass Value Angus Sires, L C. Grimes, L. R. Corah, T. Brink, M. R. Gardiner, A. K. Sexten Jan 2015

Genetic Improvement Made Through Dna Testing And Artificial Insemination To High- Growth, High Carcass Value Angus Sires, L C. Grimes, L. R. Corah, T. Brink, M. R. Gardiner, A. K. Sexten

Kansas Agricultural Experiment Station Research Reports

The beef industry has improved the recording of pedigrees and performance data through the use of breed associations and herd health databases. Constant evaluation of genetics and performance has allowed producers to make more informed breeding decisions that help improve herd productivity. As a result of recent droughts and elevated feed and grain prices, however, the American beef cowherd is at a record-low 29 million head. For the United States to continue to be the leading producer of beef in the world, the industry must adopt technologies that improve efficiency of the cowherd and the quality of beef being produced. …

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Value And Use Of Artificial Insemination By Beef Producers, S. K. Johnson, Garland R. Dahlke Jan 2015

Value And Use Of Artificial Insemination By Beef Producers, S. K. Johnson, Garland R. Dahlke

Kansas Agricultural Experiment Station Research Reports

Artificial insemination and estrous synchronization remain underutilized by U.S. beef producers. The most recent National Animal Health Monitoring Survey (NAHMS 2007–08) reported that 7.6% of producers used artificial insemination and 7.9% used estrous synchronization. The most common reason cited for not using these reproductive technologies was time and labor, followed by cost and difficulty. Little information is available on actual management practices used by producers who do use these technologies and their value to such operations.

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Evaluation Of Calcium Hydroxide-Treated Stover (Second Crop) In Receiving And Growing Diets And Effects On Cattle Performance, T. Spore, S. Montgomery, C. Vahl, B. E. Oleen, W. R. Hollenbeck, J. W. Waggoner, J. Hill, D. A. Blasi Jan 2015

Evaluation Of Calcium Hydroxide-Treated Stover (Second Crop) In Receiving And Growing Diets And Effects On Cattle Performance, T. Spore, S. Montgomery, C. Vahl, B. E. Oleen, W. R. Hollenbeck, J. W. Waggoner, J. Hill, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Production of ethanol from corn as an alternative fuel source has significantly affected the pricing landscape for corn as an energy source for livestock. As ethanol usage has become more prevalent, corn prices have become more volatile, especially in critical corn-growing areas that have been affected by drought. Consequently, many beef cattle feeders have become interested in alternative energy sources in an effort to control cost of gain. Second Crop (ADM Corp., Decatur, IL) is a process in which calcium hydroxide is added to fibrous crop residues, such as wheat straw and corn stover. When applied to low-quality roughages, calcium …

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Using Estrus-Detection Patches To Vary Time Of Insemination Improves Pregnancy Rates Compared With One Single Timed Insemination, S. L. Hill, D. M. Grieger, K C. Olson, J. R. Jaeger, J. S. Stevenson Jan 2015

Using Estrus-Detection Patches To Vary Time Of Insemination Improves Pregnancy Rates Compared With One Single Timed Insemination, S. L. Hill, D. M. Grieger, K C. Olson, J. R. Jaeger, J. S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Timed artificial insemination (TAI) of beef cows at a predetermined time is a management tool that reduces labor costs associated with conventional heat detection before insemination. Multiple research trials have examined timing of the individual components of the developed protocols associated with TAI. The 7-day CO-Synch + progesterone insert (controlled internal drug release; CIDR) protocol has been shown to initiate ovulation effectively in cycling and noncycling suckled beef cows, often producing pregnancy rates greater than 50% in beef cows. In the current research, we examined using two targeted insemination intervals depending on the occurrence of estrus. We hypothesized that by …

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Hops Βeta-Acid Extract Yields Feedlot Performance Similar To Rumensin, J. E. Axman, C. L. Van Bibber, C. Alvarado, J. Thieszen, J. S. Drouillard Jan 2015

Hops Βeta-Acid Extract Yields Feedlot Performance Similar To Rumensin, J. E. Axman, C. L. Van Bibber, C. Alvarado, J. Thieszen, J. S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Hops (Humulus lupulus) have played an integral role in beer manufacturing and are widely known for their antimicrobial and preservative properties. α-acids of hops are extracted and utilized to enhance beer flavor, leaving residues largely composed of β-acids. Beta-acid extracts of hops are structurally similar to ionophores and may express ionophore-like traits. Ionophores, including Rumensin (Elanco Animal Health, Greenfield, IN), are used to improve feed efficiency and to decrease the incidence of digestive disturbances in feedlot cattle. A large portion ofin vitrostudies show benefits from feeding hops or hop acids with results similar to ionophores; however, …

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Lactipro (Megasphaera Elsdenii) Increases Ruminal Ph And Alters Volatile Fatty Acids And Lactate During Transition To An 80% Concentrate Diet, J. Thieszen, C. L. Van Bibber, J. E. Axman, J. S. Drouillard Jan 2015

Lactipro (Megasphaera Elsdenii) Increases Ruminal Ph And Alters Volatile Fatty Acids And Lactate During Transition To An 80% Concentrate Diet, J. Thieszen, C. L. Van Bibber, J. E. Axman, J. S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Direct-fed microbials commonly have been used to enhance performance or to decrease shedding of foodborne pathogens in beef cattle.Megasphaera elsdeniiis a recently introduced probiotic bacteria marketed under the trade name Lactipro (MS-Biotec Inc., Wamego, KS) and is a key lactate-fermenting bacterium in the rumens of cattle fed high-concentrate diets.Megasphaera elsdeniiis responsible for metabolizing up to 95% lactic acid within the rumen, and thus is an important species for controlling occurrence of ruminal acidosis. The objective of this study was to evaluate changes in ruminal pH and volatile fatty acid concentration during the transition from a diet …

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