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Kansas Agricultural Experiment Station Research Reports

2002

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Articles 1 - 30 of 99

Full-Text Articles in Life Sciences

Comparative Study Of Three Expeller Process Soybean Meals In Diets For Lactating Dairy Cows, V. Burgos, Evan C. Titgemeyer, John E. Shirley Jan 2002

Comparative Study Of Three Expeller Process Soybean Meals In Diets For Lactating Dairy Cows, V. Burgos, Evan C. Titgemeyer, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

Forty-eight primiparous Holstein cows were used in two simultaneous 3x3 Latin squares with 28-day periods to evaluate expeller soybean meal from three sources. Six pens containing eight cows each were utilized. Cows were pen fed diets formulated in accordance with NRC (2001) recommendations and based on the assumption that the three sources of soybean meal were nutritionally identical. Diets contained on a dry matter basis, 24.3% chopped alfalfa hay, 9.3% field processed corn silage, 9.2% whole fuzzy cottonseed, 19.2% wet corn gluten feed (Minnesota Corn Processors, Inc., Columbus, NE), and 38% grain mix (70.2% dry ...


Diet Digestibility And Rumen Traits In Response To Feeding Wed Corn Gluten Feed And A Pellet Consisting Of Raw Soybean Hulls And Corn Steep Liquor, E. E. Ferdinand, John E. Shirley, Evan C. Titgemeyer, J.M. Defrain Jan 2002

Diet Digestibility And Rumen Traits In Response To Feeding Wed Corn Gluten Feed And A Pellet Consisting Of Raw Soybean Hulls And Corn Steep Liquor, E. E. Ferdinand, John E. Shirley, Evan C. Titgemeyer, J.M. Defrain

Kansas Agricultural Experiment Station Research Reports

Four ruminally cannulated and two intact multiparous Holstein cows were used in a 3 x 3 replicated Latin square design to evaluate digestibility and rumen traits in lactating dairy cows in response to feeding wet corn gluten feed and a novel product containing raw soybean hulls and corn steep liquor. Three dietary treatments were fed in the experiment. The control contained (DM basis) 30% alfalfa hay, 15% corn silage, 32% corn, 9.3% whole cottonseed, 4.4% solvent soybean meal (SBM), 3.3% expeller SBM, 1.3% fish meal, 1% wet molasses, and 3.7% vitamins/ minerals. Wet corn gluten ...


Milking Frequency, Estradiol Cypionate, And Bst Alters Milk Yield And Reproductive Outcomes In Dairy Cows, C.A. Blevins, J.J. Aberle, B.A. Hensley, S.M Tiffany Jan 2002

Milking Frequency, Estradiol Cypionate, And Bst Alters Milk Yield And Reproductive Outcomes In Dairy Cows, C.A. Blevins, J.J. Aberle, B.A. Hensley, S.M Tiffany

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to determine how milking frequency, estradiol cypionate (ECP) postpartum therapy given at 1 week after calving, and biweekly bovine somatotropin (bST) administration alter lactational and reproductive outcomes in dairy cattle. Holstein cows (n=144) were randomly assigned to eight treatments (18 cows per treatment): 1) twice daily milking frequency (2x), 10-mg injection of ECP at 1 week after calving (ECP), and bST (given biweekly according to label beginning in the ninth week of lactation); 2) 2x milked, oil (cottonseed oil vehicle for ECP), bST; 3) 2x milked, ECP, and no bST; 4) 2x milked ...


Performance Of Dairy Heifers Fed High Forage Diets Supplemented With Bambermycins, Lasalocid Or Monesin, A. Hammond, Michael V. Scheffel, Evan C. Titgemeyer, Jeffrey S. Stevenson Jan 2002

Performance Of Dairy Heifers Fed High Forage Diets Supplemented With Bambermycins, Lasalocid Or Monesin, A. Hammond, Michael V. Scheffel, Evan C. Titgemeyer, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

One hundred and twenty Holstein heifers weighing approximately 450 lb at the beginning of the study were used to evaluate the impact of bambermycins (Gainpro®), monensin (Rumensin®), and lasalocid (Bovatec®) on performance when included in high forage diets fed ad libitum. Heifers were housed in 24 pens (5 hf/pen) containing a super hutch. Pens were blocked (3 pens/block) from heaviest to lightest and randomly assigned within blocks to bambermycins, lasalocid, or monensin treatment. Bambermycins, lasalocid, and monensin were mixed with fine ground corn and fed as topdressing to deliver 20.25, 150, and 150 mg/hd daily, respectively ...


Director's Report Of Research In Kansas 2001, Kansas State University. Agricultural Experiment Station Jan 2002

Director's Report Of Research In Kansas 2001, Kansas State University. Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

This report contains the title, author, and publication information for manuscripts published by station scientists. It also contains a list of the research projects that were active during that period and a financial statement for the fiscal year.


Roundup 2002, Kansas State University. Agricultural Research Southeast Agricultural Research Center Center--Hays Jan 2002

Roundup 2002, Kansas State University. Agricultural Research Southeast Agricultural Research Center Center--Hays

Kansas Agricultural Experiment Station Research Reports

Roundup is the major beef cattle education and outreach event sponsored by the Agricultural Research Center-Hays. The purpose is to communicate timely, applicable research information to producers and extension personnel. The research program of the Agricultural Research Southeast Agricultural Research Center Center-Hays is dedicated to serving the people of Kansas by developing new knowledge and technology to stabilize and sustain long-term production of food and fiber in a manner consistent with conservation of natural resources, protection of the environment, and assurance of food safety. Primary emphasis is on production efficiency through optimization of inputs in order to increase profit margins ...


Performance And Carcass Characteristics Of Finishing Steers Fed Dried, Full-Fat Corn Germ, T.J. Kessen, M.J. Sulpizio, M.F. Spire, R.T. Ethington, James S. Drouillard Jan 2002

Performance And Carcass Characteristics Of Finishing Steers Fed Dried, Full-Fat Corn Germ, T.J. Kessen, M.J. Sulpizio, M.F. Spire, R.T. Ethington, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Three hundred and fifty-eight crossbred beef steers (average initial weight 701 lb) were fed finishing diets containing 0, 5, 10, or 15% full-fat corn germ to evaluate effects on growth performance and carcass characteristics. Steers were placed into dirt-surfaced feedlot pens (12 to 16 head each) in December 2000 with a total of six pens per diet. Average daily gains during the 155-day finishing period were 2.83, 2.99, 3.01 and 2.93 lb/day for cattle fed 0, 5, 10, and 15% corn germ, respectively. Dry matter intakes decreased linearly (P<0.05) with increasing concentrations of full-fat corn germ in the diet. Relative to cattle fed no corn germ, efficiencies were improved by 8, 11, and 9% for cattle fed 5, 10, or 15% germ, respectively. Feeding corn germ also reduced the incidence of liver abscesses (P<0.05) compared to cattle fed the control diet. Dried, full-fat corn germ can be used successfully in cattle finishing diets to increase energy density and animal performance.


Effects Of Melengestrol Acetate (Mga) On Performance And Carcass Quality Of Feedlot Heifers, J.T. Fox, M.F. Spire, T.J. Kessen, M.J. Sulpizio, James S. Drouillard Jan 2002

Effects Of Melengestrol Acetate (Mga) On Performance And Carcass Quality Of Feedlot Heifers, J.T. Fox, M.F. Spire, T.J. Kessen, M.J. Sulpizio, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Sixty yearling heifers (827 lb initial body weight) were fed finishing diets an average of 95 days. To eliminate social interaction and riding, they were fed in individual pens. Diets were formulated using steam-flaked corn and alfalfa hay. Thirty of the heifers were given 0.5 mg/head daily of MGA. Feed intakes, daily gains, and feed efficiencies were not significantly affected by MGA. However, heifers fed MGA had a greater percentage of carcasses grading USDA Prime and Choice. There also was greater incidence of USDA yield grade 3 and 4 carcasses with MGA supplementation. MGA generally increased fat deposition ...


Effect Of Methionine Supplementation On Methionine Metabolism In Growing Cattle, B.D. Lambert, C.A. Löest, Evan C. Titgemeyer Jan 2002

Effect Of Methionine Supplementation On Methionine Metabolism In Growing Cattle, B.D. Lambert, C.A. Löest, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Methionine is often the first limiting amino acid for growing cattle. This study was conducted to determine how methionine metabolism is regulated in the liver of growing steers. Six ruminally cannulated steers were used in a replicated 3 x 3 Latin square experiment. Either 0, 5, or 10 g/day L-methionine was infused into the abomasum. These treatments were designed to be deficient, adequate, and in excess of the steers' requirements for methionine. Methionine supplementation linearly increased protein deposition and decreased the activity of methionine synthase (a methionine conserving enzyme). However, it had little effect on activity of cystathionine synthase ...


Steam-Flaked Corn Diets Containing Combinations Of Wet Corn Gluten Feed And Alfalfa Hay: Effects On Diet Digestibility And Ruminal Characteristics, J.J. Sindt, Sean P. Montgomery, J.N. Pike, T.B. Farran, C.M. Coetzer, James J. Higgins, James S. Drouillard, Evan C. Titgemeyer Jan 2002

Steam-Flaked Corn Diets Containing Combinations Of Wet Corn Gluten Feed And Alfalfa Hay: Effects On Diet Digestibility And Ruminal Characteristics, J.J. Sindt, Sean P. Montgomery, J.N. Pike, T.B. Farran, C.M. Coetzer, James J. Higgins, James S. Drouillard, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Twelve ruminally cannulated Jersey steers were used to measure digestibility and ruminal characteristics of steam-flaked corn based diets containing combinations of wet corn gluten feed (WCGF) and alfalfa hay (AH). Starch intake was lower (P<0.05), but neutral detergent fiber intake was higher (P<0.05) as AH and WCGF increased in the diet. Ruminal pH was increased by AH (linear, P<0.05) and tended (P<0.07) to increase with WCGF. Feeding higher levels of WCGF tended to increase passage rate (P=0.17) and decreased (P<0.05) total tract organic matter digestibility. Flaked corn diets containing at least 25% WCGF may contribute enough roughage to allow reduction of alfalfa hay levels.


Salmonella Spp. Risk Assessment For Cooking Of Blade Tenderized Prime Rib, J.W. Wendelburg, D.L. Lambert, H. Thippareddi, Curtis L. Kastner, Randall K. Phebus, James L. Marsden Jan 2002

Salmonella Spp. Risk Assessment For Cooking Of Blade Tenderized Prime Rib, J.W. Wendelburg, D.L. Lambert, H. Thippareddi, Curtis L. Kastner, Randall K. Phebus, James L. Marsden

Kansas Agricultural Experiment Station Research Reports

Prime rib is generally prepared by cooking to low temperatures for long times to attain the desired tenderness and juiciness. Destruction of Salmonella spp. in blade tenderized prime rib was examined by following cooking procedures commonly used by chefs. Beef ribs (boneless) were inoculated with Salmonella spp. to attain initial surface levels of about 5.75 log10 CFU/cm2. The ribs were blade tenderized (one pass) using a Ross blade tenderizer. Each was split into two equal sections. One half was cooked to a target internal temperature of 110 and the other half to 120°F, then tempered at room ...


Steam Based Post-Process Pasteurization Of Beef Salami For Control Of Listeria Monocytogenes, V.S. Gill, H. Thippareddi, Randall K. Phebus, James L. Marsden, Curtis L. Kastner Jan 2002

Steam Based Post-Process Pasteurization Of Beef Salami For Control Of Listeria Monocytogenes, V.S. Gill, H. Thippareddi, Randall K. Phebus, James L. Marsden, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

We evaluated the destruction of Listeria monocytogenes on surfaces of artificially inoculated, vacuum-packaged beef salami by steam pasteurization (Stork RMA-Protecon Post-process Pasteurizer). Beef salami was inoculated with L. monocytogenes (initial concentrations of 4.36 log10 CFU/cm2 at the end and 4.49 at the middle), then pasteurized at 185, 194, or 203°F for 2 or 4 min. Only about 0.11 log10 CFU/cm2 (detection limit) L. monocytogenes survived after pasteurization at 203°F for 2 and 4 min, for a "kill rate" of over 99.99%. Post-packaging pasteurization reduces the threat of L. monocytogenes on the surfaces ...


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

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

Kansas Agricultural Experiment Station Research Reports

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


Practical Aspects Of Beef Carcass Traceabilityin Commercial Beef Processing Plants Using An Electronic Identification System, J.R. Davis, Michael E. Dikeman Jan 2002

Practical Aspects Of Beef Carcass Traceabilityin Commercial Beef Processing Plants Using An Electronic Identification System, J.R. Davis, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

The use of an electronic identification (EID) system in slaughter facilities holds great potential as a tool for animal and carcass traceability, if used as part of a comprehensive carcass tracking system. However, the correct association of each carcass with its individual EID tag number may be hindered at several points during the slaughter process. For 2,994 cattle slaughtered in 14 lots and bearing buttontype, full duplex EID ear tags, 113 (3.92%) had non-functional tags, 16 (0.53%) had no tag, and 37 extra head were introduced accidentally into one of our lots. Of the 2,994 carcasses ...


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

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

Kansas Agricultural Experiment Station Research Reports

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


Effects Of Weather On Average Daily Gain And Profitability, D.R. Mark, Ted C. Schroeder Jan 2002

Effects Of Weather On Average Daily Gain And Profitability, D.R. Mark, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

The effect of several weather conditions on average daily gain (ADG) and profits is quantified for typical steers and heifers fed in commercial feedyards in Western Kansas from 1980 to 1999. ADG predictions for particular pens of cattle are often used to plan marketing dates and calculate breakeven purchase prices. Weather is known to influence cattle performance, and expected weather conditions can be used to improve ADG predictions. Effects on ADG and profits from combinations of, and interactions between, temperature, precipitation, humidity, and wind speed were analyzed. The influence of these weather conditions was allowed to differ by sex, placement ...


A Study Of The Chemical And Microbial Changes In Whole-Plant Corn Silage During Fermentation And Storage: Effects Of Packing Density And Sealing Technique, M.E. Uriarte-Archundia, K.K. Bolsen, B.E. Brent Jan 2002

A Study Of The Chemical And Microbial Changes In Whole-Plant Corn Silage During Fermentation And Storage: Effects Of Packing Density And Sealing Technique, M.E. Uriarte-Archundia, K.K. Bolsen, B.E. Brent

Kansas Agricultural Experiment Station Research Reports

The objectives of this study with whole-plant corn silage were to determine the effects of forage density after packing, and sealing technique on yeast and mold populations; and to examine the relationship between the microbial and chemical changes in the silages during the fermentation process and storage period. Whole-plant corn was harvested at 80% milkline (36% DM) and ensiled at three densities (D): D1, 23.2; D2, 33.2, and D3, 43.3 lb/ft3. Half of the silos for each density were sealed immediately after filling (S, sealed) and the other half of the silos were sealed 48 hours ...


Effect Of Source Of Carbohydrate And Degradable Intake Protein In Supplements On Low-Quality Forage Utilization By Steers, J.I. Arroquy, R.C. Cochran, T.A. Wickersham, Donald A. Llewellyn Jan 2002

Effect Of Source Of Carbohydrate And Degradable Intake Protein In Supplements On Low-Quality Forage Utilization By Steers, J.I. Arroquy, R.C. Cochran, T.A. Wickersham, Donald A. Llewellyn

Kansas Agricultural Experiment Station Research Reports

Twelve ruminally fistulated steers were used in an experiment to study the impact of the source of carbohydrate (CHO) and degradable intake protein (DIP) in supplements on low-quality forage utilization. Treatments consisted of two different CHO types (fed at 0.16% of initial BW) each offered with an equal amount of DIP (0.087% of initial BW) but with six different proportions of non-protein nitrogen (NPN) and true protein as sources of DIP. The CHO types were starch and dextrose (a simple sugar). The different proportions of the two sources of N contributing to the DIP were 100:0, 80 ...


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

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

Kansas Agricultural Experiment Station Research Reports

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


Impacts Of Food Safety On Beef Demand, T.L. Marsh, N.E. Piggott Jan 2002

Impacts Of Food Safety On Beef Demand, T.L. Marsh, N.E. Piggott

Kansas Agricultural Experiment Station Research Reports

This study investigates whether food safety incidents involving beef, pork, and poultry, and the accompanying publicity have impacted United States meat demand. Beef demand is modeled as a function of beef prices, competing meat prices, meat expenditures, and food safety. Food safety indices are constructed separately for beef, pork, and poultry. Statistical tests reveal significant effects of food safety incidents on beef demand. The effect of an additional beef food safety incident on beef demand is negative, implying a detrimental impact on beef consumption. Spillover effects of pork and poultry safety incidents are positive and improve beef demand, revealing substitution ...


Effects Of Cooking Beef Muscles From Frozen Or Thawed States On Cooking Traits And Palatability, E. Obuz, Michael E. Dikeman Jan 2002

Effects Of Cooking Beef Muscles From Frozen Or Thawed States On Cooking Traits And Palatability, E. Obuz, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

We used an electric belt grill to cook steaks from two muscles; outside round (biceps femoris), and loin strip (longissimus lumborum) from both frozen and thawed states. The color values L* and a*, Warner-Bratzler shear force (WBSF), juiciness, flavor, connective tissue amount, and overall tenderness did not differ (P>0.05) between steaks cooked from frozen and thawed states. Thawed steaks cooked faster and had less cooking loss. The biceps femoris had higher WBSF than longissimus and was rated less tender by trained panelists. Color values L*, a*, or b* did not differ (P>0.05) among the muscles. The ...


Timed-Insemination Of Beef Heifers Using Cosynch With One Or Two Initial Injections Of Gnrh, David M. Grieger, C.D. Holladay, D.R. Eborn Jan 2002

Timed-Insemination Of Beef Heifers Using Cosynch With One Or Two Initial Injections Of Gnrh, David M. Grieger, C.D. Holladay, D.R. Eborn

Kansas Agricultural Experiment Station Research Reports

Our purpose was to determine if giving an additional injection of GnRH to beef heifers synchronized with the Cosynch protocol would increase pregnancy rate to timed A.I. Eighty yearling beef heifers received an injection of GnRH, 7 days before receiving an injection of PGF (Cosynch). One half of the heifers were also given an injection of GnRH 14 days prior to the PGF injection (2xGnRH-Cosynch). All heifers were given a GnRH injection 2 days after PGF and inseminated at that time. Pregnancy rate for the 2xGnRH-Cosynch group (40%) was not different than that for the Cosynch group (50%) and ...


Timed Insemination Of Suckled Beef Cows After Ovulation Synchronizationwith Cosynch + Cidr, Sandra K. Johnson, Keith R. Harmoney, Jeffrey S. Stevenson Jan 2002

Timed Insemination Of Suckled Beef Cows After Ovulation Synchronizationwith Cosynch + Cidr, Sandra K. Johnson, Keith R. Harmoney, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Lactating beef cows (n=360) were synchronized using the Cosynch procedure; 100 μg of GnRH (day −7) followed in 7 days by 25 mg of PGF2α(day 0). A used intravaginal progesterone insert (CIDR-B) was inserted on day −7 and removed at the time of PGF2αadministration. Cows were assigned to a 2 x 2 factorial arrangement of four treatments: 1) insemination beginning at 48 vs. 60 hours after PGF2αand 2) administration of a second, 100 μg injection of GnRH or an equivalent volume of saline immediately after timed AI. Timed AI at either 48 or 60 hours after PGF2αin a ...


Maximizing Desirable Ground Beef Color With Cold Storage And Display Temperatures, R.A. Mancini, Melvin C. Hunt, Donald H. Kropf, K.A. Hachmeister, D.E. Johnson, John A. Fox Jan 2002

Maximizing Desirable Ground Beef Color With Cold Storage And Display Temperatures, R.A. Mancini, Melvin C. Hunt, Donald H. Kropf, K.A. Hachmeister, D.E. Johnson, John A. Fox

Kansas Agricultural Experiment Station Research Reports

This study evaluated the combined effects of storage temperature, storage time, display temperature, display time, and fat level on ground beef color. Storage at 32°F minimized discoloration during display compared to storage at 40° and 48°F. Storage up to 12 days at 32°F did not affect ground beef color stability, whereas prolonged storage at 40° and 48°F increased discoloration dramatically. When storage was at 32°F, sales loss was 0.4%, compared to 62% at 48°F. Fat level did not influence discoloration. The use of 32°F during storage and display is essential for maximizing ...


Surface Roughening During Slicing Reduces Iridescence, T.E. Lawrence, Melvin C. Hunt, Donald H. Kropf Jan 2002

Surface Roughening During Slicing Reduces Iridescence, T.E. Lawrence, Melvin C. Hunt, Donald H. Kropf

Kansas Agricultural Experiment Station Research Reports

We evaluated surface roughening during slicing as a way to decrease iridescence of pre-cooked cured beef bottom round, inside round, and eye of round roasts. Using a textured slicing blade surface decreased iridescence intensity and the area of iridescence compared to the control (smooth surface). Iridescence intensity and percentage of iridescent area was greatest in the eye of round, followed by the inside bottom round. Iridescence (both intensity and percentage of area) in sliced meat products can be reduced by using a meat-slicing blade with a textured face.


Effects Of Cold Shortening And Cooking Rate On Beef Tenderness, D.A. King, T.L. Wheeler, M. Koohmaraie, Michael E. Dikeman, Curtis L. Kastner Jan 2002

Effects Of Cold Shortening And Cooking Rate On Beef Tenderness, D.A. King, T.L. Wheeler, M. Koohmaraie, Michael E. Dikeman, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

A study was conducted to determine if excised, cold-shortened muscle improves in tenderness with refrigerated aging. Changes in muscle tenderness due to cooking rates were also evaluated. Beef ribeye and shoulder clod muscles from the left side of 12 carcasses were removed 45 min postmortem and placed in an ice bath to induce cold shortening. Corresponding muscles from the right side were chilled conventionally on the intact side. One-inch steaks from these muscles were either frozen at 24 hours or aged for 14 days at 40ºF before being cooked and analyzed. Steaks were analyzed raw, or cooked to 160ºF internally ...


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

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

Kansas Agricultural Experiment Station Research Reports

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


Efficiency Differences In Kansas Beef Cow-Calf Production, L. Stryker, R. Jones, M. Langmeier Jan 2002

Efficiency Differences In Kansas Beef Cow-Calf Production, L. Stryker, R. Jones, M. Langmeier

Kansas Agricultural Experiment Station Research Reports

For the beef industry to be economically competitive with other meat industries, it is essential that individual producers strive for the most efficient, highest quality, least cost production possible. A sample of 26 Kansas beef cow-calf enterprises from the Kansas Standardized Performance Analysis database (SPA) was used to measure efficiency differences among producers, as well as factors contributing toward these differences. On average, farms were 86% technical, 69% economic, and 58% overall efficient. Thus, our results suggest that output could be increased by 14% with optimal technology use, and cost could be decreased by 42% if farms were fully economically ...


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

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

Kansas Agricultural Experiment Station Research Reports

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


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

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

Kansas Agricultural Experiment Station Research Reports

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