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Dry Matter Intake Decreases Shortly After Initiation Of Feeding Zilmax During The Summer, Christopher D. Reinhardt, Christopher I. Vahl, Brandon E. Depenbusch Jan 2014

Dry Matter Intake Decreases Shortly After Initiation Of Feeding Zilmax During The Summer, Christopher D. Reinhardt, Christopher I. Vahl, Brandon E. Depenbusch

Kansas Agricultural Experiment Station Research Reports

Tenderness, juiciness, and flavor play important roles in a satisfactory beef eating experience. All three factors can be affected by management decisions made by producers during the production of beef. Beef producers currently use a multitude of production programs that utilize 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 are fed in combination to improve feedlot performance, whereas growth promotants improve feed efficiency, average daily gain, hot carcass weight, and yield grades of carcasses. Although the use of feed additives and growth ...


High-Dose Anabolic Implants Are Not All The Same For Growth And Carcass Traits Of Feedlot, Christopher D. Reinhardt Jan 2014

High-Dose Anabolic Implants Are Not All The Same For Growth And Carcass Traits Of Feedlot, 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.


Performance And Health Effects Of Zuprevo 18% In Newly Received, Highly Stressed Beef Cattle, 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, 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.


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

Comparison Of Conventional And Alltech Beef Pn Finishing Programs: Performance And, Kelsey J. Phelps, K. A. Miller, Cadra L. Van Bibber-Krueger, Andrea K. Sexten, J. Jennings, Brandon E. Depenbusch, John M. Gonzalez, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to compare the feedlot and carcass performance of the PN Beef Program in relation to a conventional feedlot diet when both diets are combined with or without exogenous growth promotants.


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

Udder Quality Is Moderately Heritable In Hereford Cattle, 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 ...


Variation In Timed Artificial Insemination Pregnancy Rates In Specific Groups Of Suckled, Scott L. Hill, Jeffrey S. Stevenson Jan 2014

Variation In Timed Artificial Insemination Pregnancy Rates In Specific Groups Of Suckled, Scott L. Hill, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Insemination of beef cows at a predetermined time is a management tool to reduce labor costs associated with conventional heat detection available to cattle producers. Multiple research trials have examined the timing of the administration of the individual components of the developed protocols associated with timed artificial insemination (TAI). In the current research, we examined various classifications of postpartum beef cows and analyzed their reproductive performance when submitted to TAI protocols. The 7-day CO-Synch + controlled internal drug release (CIDR) insert protocol and the 5-day CO-Synch + CIDR protocol have been shown to effectively initiate ovulation in cycling and non-cycling suckled beef ...


Utilization Of Omega-3 Fatty Acids Is Improved By Embedding Flaxseed In A Matrix Of Dolomitic Lime Hydrate, 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, 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 ...


Effects Of Media Type On Shiga Toxigenic E. Coli Growth Patterns, Nicholas W. Baumann, Nicholas J. Sevart, Minto Michael, Donka T. Milke, G. Lewis, R. Moxley, Randall K. Phebus Jan 2014

Effects Of Media Type On Shiga Toxigenic E. Coli Growth Patterns, Nicholas W. Baumann, Nicholas J. Sevart, Minto Michael, Donka T. Milke, G. Lewis, R. Moxley, Randall K. Phebus

Kansas Agricultural Experiment Station Research Reports

Escherichia coli O157:H7 was declared to be an adulterant in raw ground beef in 1994 by the United States Department of Agriculture Food Safety and Inspection Service following a large and deadly foodborne disease outbreak in the Pacific Northwest involving undercooked hamburgers sold at Jack-in-the-Box restaurants. Due to their recognition as significant human foodborne pathogens, six additional strains (serotypes) of Shiga toxin-producing E. coli (STEC) were also deemed to be adulterants in raw beef products in 2012. The beef processing industry has worked diligently since the mid-1990s to control the presence of E. coli O157:H7 in finished raw ...


Comparison Of Conventional And Alltech Beef Pn Finishing Programs: Meat Color Characteristics, 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, 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 ...


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

Administration Of Prostaglandin To Beef Heifers At Time Of Artificial Insemination, 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 ...


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

Heifer Calving Rate Is Lowly Heritable In Hereford Cattle, 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 ...


Combining Ruminally Protected Choline And Flaxseed In Cattle Diets To Increase The Assimilation Of Omega-3 Fatty Acids From The Diet, Caleb P. Weiss, Cadra L. Van Bibber-Krueger, K. A. Miller, Christian A. Alvarado-Gilis, James S. Drouillard Jan 2014

Combining Ruminally Protected Choline And Flaxseed In Cattle Diets To Increase The Assimilation Of Omega-3 Fatty Acids From The Diet, Caleb P. Weiss, Cadra L. Van Bibber-Krueger, K. A. Miller, Christian A. Alvarado-Gilis, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Omega-3 fatty acids are an essential part of a healthy human diet. If consumed regularly, these fatty acids attenuate inflammation and lower risk of inflammatory diseases, such as heart disease and rheumatoid arthritis. The human body cannot synthesize adequate amounts of omega-3 fatty acids; they must be obtained by consuming foods that are rich in omega-3s. Omega-3 fatty acids can be found in foods like fish, some oilseeds, and some nut oils. Overall consumption of these foods is relatively low compared with the consumption of red meat such as beef, which typically contains relatively small amounts of omega-3 fatty acids ...


Aging Time Affects Color Stability And Sensory Properties Of Ground Beef Patties Adjusted, Brandi D. Cleveland, Robert S. Mcewan, John A. Unruh, C. M. Garner, Sally L. Stroda Jan 2014

Aging Time Affects Color Stability And Sensory Properties Of Ground Beef Patties Adjusted, Brandi D. Cleveland, Robert S. Mcewan, John A. Unruh, C. M. Garner, Sally L. Stroda

Kansas Agricultural Experiment Station Research Reports

Palatability traits of flavor, juiciness, and tenderness are associated with consumer satisfaction. Although grinding offers an opportunity to mechanically minimize differences in tenderness, muscle source and product quality may still affect the sensory properties of ground beef. The objective of this study was to determine the effects of two quality grades (Premium Choice and Select) and vacuum storage aging time (7, 21, and 42 days) before processing on ground beef patty display color from chuck roll and knuckle subprimals combined to obtain a common percentage of fat.


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

Evaluating The Effectiveness Of Transport Media On Shiga Toxin-Producing E. Coli Serotypes, 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 ...


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

Comparison Of Conventional And Alltech Beef Pn Finishing Programs: Meat Water-Holding Capacity And Tenderness, Kelsey Phelps, K. A. Miller, Cadra L. Van Bibber-Krueger, J. Jennings, Brandon E. Depenbusch, James S. Drouillard, John M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

Tenderness, juiciness, and flavor play important roles in a satisfactory beef eating experience. All three factors can be affected by management decisions made by producers during the production of beef. Beef producers currently use a multitude of production programs that utilize 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 are fed in combination to improve feedlot performance, whereas growth promotants improve feed efficiency, average daily gain, hot carcass weight, and yield grades of carcasses. Although the use of feed additives and growth ...


Botanical Composition Of Beef Cow Diets Shifts When Native Range Infested With Sericea Lespedeza (Lespedeza Cuneata) Is Supplemented With Corn Steep Liquor, Garrett W. Preedy, K. C. Olson, Leigh W. Murray, Walter H. Fick Jan 2014

Botanical Composition Of Beef Cow Diets Shifts When Native Range Infested With Sericea Lespedeza (Lespedeza Cuneata) Is Supplemented With Corn Steep Liquor, Garrett W. Preedy, K. C. Olson, Leigh W. Murray, Walter H. Fick

Kansas Agricultural Experiment Station Research Reports

Corn steep liquor supplementation indicated that a higher percentage of sericea lespedeza plants were defoliated in pastures grazed by corn steep liquor-supplemented cows than in pastures grazed by unsupplemented cows; however, it was unknown if defoliation was related directly to grazing activity of cows. Therefore, our objective was to evaluate the effects of supplemental corn steep liquor on botanical composition of the diets of beef cows grazing native tallgrass rangeland infested with sericea lespedeza in the Kansas Flint Hills.


Wheat Straw Improved By Half-Rate Application Of Anhydrous Ammonia, 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, 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 ...


Increasing Postmortem Aging Time Decreases Color And Flavor Stability Of Top Sirloin Steaks, 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, 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 ...


Electrostatic Spray Cabinet Evaluation To Verify Uniform Delivery Of Chemical And Biological Solutions To Pre-Chilled Meat Animal Carcasses, 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, 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 ...


Aging Premium Choice Chuck Rolls For Minimal Days Maximizes Color Stability And Extends Retail Display Life, C. M. Garner, John A. Unruh, Melvin C. Hunt, Elizabeth A.E. Boyle, Terry A. Houser Jan 2014

Aging Premium Choice Chuck Rolls For Minimal Days Maximizes Color Stability And Extends Retail Display Life, C. M. Garner, John A. Unruh, Melvin C. Hunt, Elizabeth A.E. Boyle, Terry A. Houser

Kansas Agricultural Experiment Station Research Reports

Subprimals can be stored in a vacuum package for extended periods of time. The number of days that subprimals may be held before processing can be influenced by the distribution chain, accessibility, and subprimal price fluctuations. Extended vacuum storage before grinding could affect biochemical, oxidative, and microbial properties of these subprimals and influence their color stability. Our objective was to determine the effects of two subprimal types (chuck roll and knuckle), two quality grades (Premium Choice and Select), and three vacuum-packaged storage aging times before processing (7, 21, and 42 days) on ground beef patty display color stability.


Quality Classification Affects Firmness Of Ground Beef Patties From The Chuck Roll, 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, 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 ...


Genetic Relationships Among Temperament, Immune Function, And Carcass Merit, Kerri E. Bates, Robert L. Weaber, Jennifer M. Bormann, Daniel W. Moser, J. L. Salak-Johnson, C. C.L. Chase, R. K. Peel, H. Van Campen, G. H. Loneragan, J. J. Wagner Jan 2014

Genetic Relationships Among Temperament, Immune Function, And Carcass Merit, Kerri E. Bates, Robert L. Weaber, Jennifer M. Bormann, Daniel W. Moser, J. L. Salak-Johnson, C. C.L. Chase, R. K. Peel, H. Van Campen, G. H. Loneragan, J. J. Wagner

Kansas Agricultural Experiment Station Research Reports

Cattle producers historically have selected for docile temperaments simply for management convenience because calmer animals are conducive to safe environments for their peers as well as their handlers. As many producers would acknowledge, there seems to be a relationship between temperament and health, and calmer cattle tend to frequent the working chute for treatment of disease less often. Positive correlations have been found in cattle between temperament traits (chute scores, pen scores, and chute exit velocities) and cortisol concentration in the blood, suggesting that more excitable cattle are easily stressed (Curley et al., 2006; Cooke et al., 2009). In addition ...


Effects Of Corn Steep Liquor Supplementation On Performance And Herbivory Patterns Of Beef, 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, 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 ...


Relationships Between Docility And Reproduction In Angus Heifers, Kari L. White, Jennifer M. Bormann, K. C. Olson, John R. Jaeger, Sandra K. Johnson, B. Downey, David M. Grieger, Justin W. Waggoner, Daniel W. Moser, Robert L. Weaber Jan 2014

Relationships Between Docility And Reproduction In Angus Heifers, Kari L. White, Jennifer M. Bormann, K. C. Olson, John R. Jaeger, Sandra K. Johnson, B. Downey, David M. Grieger, Justin W. Waggoner, Daniel W. Moser, Robert L. Weaber

Kansas Agricultural Experiment Station Research Reports

Reproductive success is relevant in beef cattle operations because income generated by the sale of calves is often a large portion of an operation's income. Selecting for fertility is difficult because it is influenced by a variety of factors. Temperament could be a factor affecting fertility. Physiological responses associated with temperament can influence the probability of cows becoming pregnant because stress hormones in the bloodstream can negatively affect the release of reproductive hormones. Methods have been developed to assess temperament in cattle. Exit velocity measures the time it takes for an animal to cover a predetermined distance after vacating ...


Aging For 35 Days Does Not Improve Tenderness Of Strip Loin Steaks From Heifers Fed Zilmax, Sara M. Ebarb, Kelsey Phelps, Cadra L. Van Bibber-Krueger, James S. Drouillard, John M. Gonzalez Jan 2014

Aging For 35 Days Does Not Improve Tenderness Of Strip Loin Steaks From Heifers Fed Zilmax, Sara M. Ebarb, Kelsey Phelps, Cadra L. Van Bibber-Krueger, James S. Drouillard, John M. Gonzalez

Kansas Agricultural Experiment Station Research Reports

As the world's population continues to expand, demand for food animal products is also increasing; therefore, efficient production is vital. Implants and beta-adrenergic agonists such as Zilmax (Merck Animal Health, Summit, NJ) improve average daily gain and feed efficiency in feedlot cattle. Use of these growth technologies also increases hot carcass weight and muscle mass. Although use of implants and Zilmax increases efficiency of beef production, these products also negatively affect meat quality characteristics such as marbling and tenderness. Some research reports conclude that wet aging meat for extended periods of time can alleviate tenderness issues caused by exogenous ...


Docility And Heifer Pregnancy Estimates In Angus Heifers, Kari L. White, Jennifer M. Bormann, Daniel W. Moser, Robert L. Weaber Jan 2014

Docility And Heifer Pregnancy Estimates In Angus Heifers, Kari L. White, Jennifer M. Bormann, Daniel W. Moser, Robert L. Weaber

Kansas Agricultural Experiment Station Research Reports

Reproductive success is economically relevant in beef cattle operations because the number of calves born influences the value of calves sold at weaning. Improvements in reproductive performance can be up to four times more important than improvements in end-product traits in an operation selling calves at weaning. Selecting for fertility is difficult because it is influenced by a variety of factors. Temperament is one of the factors affecting fertility that requires further investigation. Researchers report that physiological responses associated with temperament can influence the probability of cows becoming pregnant. Stress hormones such as cortisol in the bloodstream can negatively affect ...


Temperament Can Be An Indicator Of Feedlot Performance And Carcass Merit In Beef Cattle, Kerri E. Bates, Robert L. Weaber, Jennifer M. Bormann, Daniel W. Moser, J. L. Salak-Johnson, C. C.L. Chase, R. K. Peel, H. Van Campen, G. H. Loneragan, J. J. Wagner Jan 2014

Temperament Can Be An Indicator Of Feedlot Performance And Carcass Merit In Beef Cattle, Kerri E. Bates, Robert L. Weaber, Jennifer M. Bormann, Daniel W. Moser, J. L. Salak-Johnson, C. C.L. Chase, R. K. Peel, H. Van Campen, G. H. Loneragan, J. J. Wagner

Kansas Agricultural Experiment Station Research Reports

Cattle producers historically have selected for docile temperaments simply for management convenience because calmer animals are conducive to safe environments for their peers as well as their handlers. As many producers would acknowledge, however, there seems to be a relationship between temperament and cattle health, and calmer cattle tend to frequent the working chute for treatment of disease less often. Positive correlations have been found in cattle between temperament traits (chute scores, pen scores, and chute exit velocities) and cortisol concentration in the blood, suggesting that more excitable cattle are easily stressed (Curley et al., 2006; Cooke et al., 2009 ...


Subprimal Type And Quality Grade Affect Fattyacid Composition And Cooked Firmness Of Ground Beef Patties, C. M. Garner, John A. Unruh, Melvin C. Hunt, Elizabeth A.E. Boyle, Terry A. Houser, Sally L. Stroda Jan 2014

Subprimal Type And Quality Grade Affect Fattyacid Composition And Cooked Firmness Of Ground Beef Patties, C. M. Garner, John A. Unruh, Melvin C. Hunt, Elizabeth A.E. Boyle, Terry A. Houser, Sally L. Stroda

Kansas Agricultural Experiment Station Research Reports

Subprimals can be stored in a vacuum package for extended periods of time at low storage temperatures. The number of days that subprimals may be held before processing can be influenced by the distribution chain, accessibility, and subprimal price fluctuations. Extended vacuum storage before grinding could affect biochemical, oxidative, and microbial properties of these subprimals and influence sensory properties. Our objective was to determine the effects of two subprimal types (chuck roll and knuckle), two quality grades (Premium Choice and Select), and three vacuum-packaged storage aging times before processing (7, 21, and 42 days) on ground beef patty sensory properties.


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, 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, 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.


Effects Of Optaflexx Alone Or In Combination With Bovantage On The Performance And Carcass Merit Of Finishing Heifers, James S. Drouillard, Cadra L. Van Bibber-Krueger, K. A. Miller Jan 2014

Effects Of Optaflexx Alone Or In Combination With Bovantage On The Performance And Carcass Merit Of Finishing Heifers, James S. Drouillard, Cadra L. Van Bibber-Krueger, K. A. Miller

Kansas Agricultural Experiment Station Research Reports

Beta agonists, including Optaflexx (Elanco Animal Health, Greenfield, IN), are now routinely fed to finishing cattle as a means of increasing carcass weight and efficiency of carcass weight gain during the final 20 to 42 days on feed. BoVantage, a product recently introduced by Kent Nutrition Group (Muscatine, IA) for use in feedlot cattle, has been observed to improve efficiency of gain late in the finishing phase. This study was conducted to determine if the actions of BoVantage and Optaflexx are synergistic.