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Full-Text Articles in Animal Sciences
Selection Response And Genetic Parameter Estimation For Feed Intake, Gain, And Feed Conversion (1995), J.B. Jr. Glaze, R.R. Schalles
Selection Response And Genetic Parameter Estimation For Feed Intake, Gain, And Feed Conversion (1995), J.B. Jr. Glaze, R.R. Schalles
Kansas Agricultural Experiment Station Research Reports
Performance records of 1459 Polled Hereford cattle born from 1967 through 1979 were analyzed to estimate genetic parameters and the direct and correlated responses that were due to selection for feed conversion. Heritabilities were .24 for intake, .25 for gain, and .14 for feed conversion. The genetic correlation between average daily gain and feed conversion was -.82; correlation between average daily gain and feed intake was .42. Faster-gaining cattle have greater feed intakes and are more efficient. Feed conversion was improved by direct selection. However, it is more economically feasible for breeders to improve feed conversion by selecting for faster …
Pregnancy Rates In Mga-Prostaglandin Synchronized Heifers Bred At Estrus Or Inseminated At Fixed Times (1995), J.M. Smith, L.R. Corah, G.C. Lamb, A.R. Spell
Pregnancy Rates In Mga-Prostaglandin Synchronized Heifers Bred At Estrus Or Inseminated At Fixed Times (1995), J.M. Smith, L.R. Corah, G.C. Lamb, A.R. Spell
Kansas Agricultural Experiment Station Research Reports
The objective of this project was to study the effects on pregnancy rates of inseminating estrus-synchronize d heifers either at observed estrus or at a fixed time. In April, 1994, 574 yearling crossbred heifers, located on six Kansas ranches, were inseminated to achieve this objective. Her d size ranged from 38 to 293 head. The heifers were synchronized with the MGA-prostaglandin (PGF) system. Heifers were either inseminated 12 hr after the onset of estrus or, if not showing estrus, 72 hr after PGF. Pregnancy rates of 491 heifers bred on estrus averaged 56.6% (39.2 to 80.4%). Pregnancy rates for the …
Influence Of Increasing Proportion Of Supplemental Nitrogen From Urea On Intake And Fermentation Characteristics In Beef Steers Consuming Low-Quality, Tallgrass-Prairie Forage (1995), H.H. Köster, R.C. Cochran, E.S. Vanzant, K.K. Kreikemeier, G. St Jean, Evan C. Titgemeyer, Tiruvoor G. Nagaraja
Influence Of Increasing Proportion Of Supplemental Nitrogen From Urea On Intake And Fermentation Characteristics In Beef Steers Consuming Low-Quality, Tallgrass-Prairie Forage (1995), H.H. Köster, R.C. Cochran, E.S. Vanzant, K.K. Kreikemeier, G. St Jean, Evan C. Titgemeyer, Tiruvoor G. Nagaraja
Kansas Agricultural Experiment Station Research Reports
Five ruminally and duodenally fistulated Angus x Hereford steers were used to determine intake and fermentation responses associated with increasing the proportion of supplemental degradable intake protein (DIP) provided by urea. Steers had free access to a dormant, tallgrass-prairie forage. The supplemental DIP was provided by sodium caseinate and (or) urea , at a level that was determined previously to optimize use of a similar forage. Supplemental DIP was balanced with corn starch to provide a final supplement of 40% crude protein. Percentages of DIP from urea were: 0, 25, 50, 75, and 100%. Supplements were given intraruminally. Increasing the …
The Effect Of Dietary Zinc Level And Source On Yearling Bull Growth And Fertility (1995), J.D. Arthington, K.R. Johnson, L.R. Corah, C.L. Willms, D.A. Hill
The Effect Of Dietary Zinc Level And Source On Yearling Bull Growth And Fertility (1995), J.D. Arthington, K.R. Johnson, L.R. Corah, C.L. Willms, D.A. Hill
Kansas Agricultural Experiment Station Research Reports
To study the effect of dietary zinc level and source on bull growth and fertility, 325 yearling Angus bulls were allotted by weight into six pens (three pens of heavy and three pens of lightweight bulls). The three supplemental zinc (Zn) treatments were 1) 40 ppm inorganic Zn all supplied by Zn sulfate (ZnI); 2) 40 ppm Zn with 1/3 supplied by Zn proteinate and 2/3 supplied by Zn sulfate (ZnPI); and 3) 60 ppm ZnI all supplied by Zn sulfate (ZnHi). Initial and final liver biopsies (10 per pen) were collected and analyzed for zinc concentration. Individual weights and …
The Effect Of Implants On Gain Of Heifers Grazing Native Grass (1995), F.K. Brazle, D.L. Cook
The Effect Of Implants On Gain Of Heifers Grazing Native Grass (1995), F.K. Brazle, D.L. Cook
Kansas Agricultural Experiment Station Research Reports
Three hundred-ninety crossbred heifers were allotted randomly to one of three implant treatments: 1) Implus- H®, 2) Synovex-H®, and 3) Ralgro®. The heifers grazed native grass pastures for 122 days, stocked at 4 acres per head. The heifers receiving the Implus-H tended to gain faster (P<.12) than the Ralgro heifers. No difference in gain occurred between the Implus-H and Synovex-H heifers.
Effects Of Grazing System And Use Of A Pasture-Phase Implant On Grazing And Finishing Performance Of Steers (1995), Robert T. Brandt Jr., C.T. Milton, Clenton E. Owensby
Effects Of Grazing System And Use Of A Pasture-Phase Implant On Grazing And Finishing Performance Of Steers (1995), Robert T. Brandt Jr., C.T. Milton, Clenton E. Owensby
Kansas Agricultural Experiment Station Research Reports
Results are presented from the first year of a 2-year study to evaluate the effects of grazing system (intensive-early stocking or IES vs season-long grazing or SLG) with or without a pasture-phase implant (Synovex-S®) on grazing and subsequent finishing performance. Compared to a SLG system, IES resulted in faster rate of gain on pasture and more beef produced per acre, although SLG resulted in greater total pasture gain per animal. Implanting improved rate of gain and increased beef per acre, particularly for IES steers. In the feedlot, IES steers gained weight faster and more efficiently than SLG steers. However, SLG …
Response Of Pregnant Beef Cows To Undegradable Intake Protein Fed In Excess Of The Degradable Intake Protein Requirement (1995), R.C. Cochran, H.H. Koster, E.S. Vanzant, Timothy J. Jones, K. C. Olson, Evan C. Titgemeyer
Response Of Pregnant Beef Cows To Undegradable Intake Protein Fed In Excess Of The Degradable Intake Protein Requirement (1995), R.C. Cochran, H.H. Koster, E.S. Vanzant, Timothy J. Jones, K. C. Olson, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Two concurrent experiments were conducted to evaluate the effect on performance and forage intake of increasing the supply of undegradable intake protein (UIP) to pregnant beef cows already receiving sufficient degradable intake protein (DIP) to maximize forage intake. Three supplements were fed at .34% BW/day, providing .092% B W/day of DIP (level determined in previous study to maximize forage intake) and .042, .059, and .077% BW/day of UIP (low , moderate, and high UIP, respectively) . In study 1, ad libitum tallgrassprairie forage intake was measured daily from 12/1/93 to 2/10/9 4 using 18 pregnant Angus x Hereford cows. Forage …
Sulfur Amino Acid Utilization By Growing Steers (1995), C.G. Campbell, G. St Jean, Evan C. Titgemeyer
Sulfur Amino Acid Utilization By Growing Steers (1995), C.G. Campbell, G. St Jean, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Two studies were conducted to evaluate sulfur amino acid requirements of growing steers. In trial 1, six ruminally cannulated steers (352 lb) were used to determine methionine requirements . Treatments were abomasal infusions of 0, 2, 4, 6, 8, or 10 g/day of L-methionine. Steers were fed 5.8 lb of a soyhull and wheat straw based diet. Continuous infusion s of acetate, propionate, and butyrate into the rumen and of dextrose into the abomasum were made to increase energy. Amino acids other than methionine were infused into the abomasum to ensure that they did not limit steer performance. Nitrogen retention …
Feeder Cattle Price Differentials: How Much Did They Change Over Time? (1995), J. Mintert, F. Brazle, J. Iii Sartwelle, R. Jr. Bolze, Michael R. Langemeier, Ted C. Schroeder
Feeder Cattle Price Differentials: How Much Did They Change Over Time? (1995), J. Mintert, F. Brazle, J. Iii Sartwelle, R. Jr. Bolze, Michael R. Langemeier, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
Results from mathematical models of feeder cattle price/characteristics using data collected in Kansa s and Missouri in 1986/1987 and from 1993 using the same data collection and modeling procedures indicate that the implicit values of many feeder cattle characteristics changed over time. Characteristic values often changed whether their value was measured in dollars per hundredweight or as a percentage of the mean feeder p rice during the data collection period. Directional impacts of characteristics on feeder cattle price were generally consistent from 1986/1987 to 1993. These results imply that, as market conditions change, new feeder cattle price/characteristic relationships need to …
Relating Quality Changes To Storage Time For Baled Alfalfa (1995), W.K. Coblentz, J.O. Fritz, K.K. Bolsen, R.C. Cochran
Relating Quality Changes To Storage Time For Baled Alfalfa (1995), W.K. Coblentz, J.O. Fritz, K.K. Bolsen, R.C. Cochran
Kansas Agricultural Experiment Station Research Reports
The relationships between storage time and several chemical indices for forage quality were established for alfalfa hay baled at two moisture levels (29.9 and 19.7%) in conventional and laboratory bale s made at 1.0, 1.5, and 2.0 times the density o f parent, conventional bales. Bales were sampled after 0, 4, 11, 22, and 60 days. For the high-moisture bales, most quality indices indicated substantial nutrient loss early in the storage period, particularly between days 4 and 11, with little change after 22 days. A nonlinear mathematical model was constructed to describe how neutral detergent fiber and several other quality …
Factors Affecting Premature Browning In Cooked Ground Beef (1995), Melvin C. Hunt, K.E. Warren, Donald H. Kropf, M.A. Hague, C.L. Waldner, Sally L. Stroda, Curtis L. Kastner
Factors Affecting Premature Browning In Cooked Ground Beef (1995), Melvin C. Hunt, K.E. Warren, Donald H. Kropf, M.A. Hague, C.L. Waldner, Sally L. Stroda, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
Some ground beef patties developed an internal, brown cooked color and looked well-done at temperatures as low as 13 1EF, whereas normal patties were re d to pink. The premature brown color was not relate d to percent fat; patty compaction; animal source and maturity; pH (5.5 to 5.8); or concentrations of raw patty heme and nonhemeiron, myoglobin, and total pigment. Because oxidation-reduction potential and total reducing activities were higher (P<.05) and TBA numbers were lower (P<.05) in normal than prematurely brown patties, the brown color is apparently related to greater patty oxidation.
Agronomic Performance And Silage Quality Traits Of Forage Sorghum Hybrids In 1994 (1995), M.S. Mitchem, L. Pfaff, K.K. Bolsen, Matthew A. Young
Agronomic Performance And Silage Quality Traits Of Forage Sorghum Hybrids In 1994 (1995), M.S. Mitchem, L. Pfaff, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
The 1994 growing season was characterized by near norm al rainfall and temperatures. Both whole-plant DM and grain yields were excellent for all hybrid s. The middle-season Pioneer 947 hybrid had the highest grain yield. The two dual-purpose hybrids had the highest whole-plant DM yields, and the male sterile (Golden Harvest H-1) and the grain sorghum (DeKalb 42Y) had the lowest. Strong winds in the first week in September caused substantial lodging in three of the four tall middle- and late-season hybrids (DeKalb FS-5 and Golden Harvest H-2 and H-68). Two of the short height, dual purpose hybrids (Northrup King …
Ad Libitum Suckling By A Foster Calf In The Presence Or Absence Of The Cow's Own Calf Prolongs Postpartum Anestrus To First Ovarian Cycle (1995), G.C. Lamb, J.M. Smith, Jeffrey S. Stevenson
Ad Libitum Suckling By A Foster Calf In The Presence Or Absence Of The Cow's Own Calf Prolongs Postpartum Anestrus To First Ovarian Cycle (1995), G.C. Lamb, J.M. Smith, Jeffrey S. Stevenson
Kansas Agricultural Experiment Station Research Reports
Five treatments were initiated approximately 15 days after calving: 1) calf was weaned from its dam (CW); 2) calf was present continually with its own dam (CP-O); 3) calf was present continually with its own dam but contact with the udder was restricted (CR); 4) foster calf was pre sent continually but the cow's own calf was absent (CP-F); and 5) foster calf was present continually, and the dam's own calf was present but restricted (CR+F). Cows weaned at 15 days (CW) cycled in about 2 weeks, whereas cows in the CR treatment cycled 1 week later, and cows in …
Pregnancy Rates In Virgin Heifers And Suckled Beef Cows After Synchronized Ovulation Using Pgf2a, Norgestomet, And Gnrh (1995), D.P. Hoffman, C.L. Krehbiel, R.M. Mckee, Jeffrey S. Stevenson, David A. Nichols
Pregnancy Rates In Virgin Heifers And Suckled Beef Cows After Synchronized Ovulation Using Pgf2a, Norgestomet, And Gnrh (1995), D.P. Hoffman, C.L. Krehbiel, R.M. Mckee, Jeffrey S. Stevenson, David A. Nichols
Kansas Agricultural Experiment Station Research Reports
One disadvantage of most estrous synchronization programs is their inability to induce cycling in prepubertal heifers and anestrous suckled beef cows. Suckled cows and virgin heifers were treated with PG F2", norgestomet, and GnRH to induce ovarian cyclicity in prepubertal heifers and anestrous suckled cows as well as to synchronize estrus in cycling females. The treatment consisted of two injections of PGF2" (day -14 and 0) plus 100 μg of GnRH and a 6 mg norgestomet implant on day -7. The implants were removed 24 h after the second injection of PGF2" (day 0). An injection of 100 μg of …
Influence Of Degradable Intake Protein On Site And Extent Of Digestion In Beef Cows Consuming Low-Quality, Tallgrass-Prairie Forage (1995), H.H. Köster, R.C. Cochran, E.S. Vanzant, G. St Jean, Evan C. Titgemeyer
Influence Of Degradable Intake Protein On Site And Extent Of Digestion In Beef Cows Consuming Low-Quality, Tallgrass-Prairie Forage (1995), H.H. Köster, R.C. Cochran, E.S. Vanzant, G. St Jean, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Five Angus x Hereford cow s with ruminal and duodenal fistulas were used to evaluate the effect of providing increasing degradable intake protein (DIP) o n the site and extent of digestion of dormant, tallgrass-prairie forage. The DIP was provided from sodium caseinate, divided in two equal portions and infused intraruminally twice daily. Levels of DIP were: 0, 180, 360, 540, and 720 g/day. Supplemental DIP generally improved utilization of low quality forage, with maximum effects on duodenal N flow and forage organic matter intake at 540 g DIP/day.
Wheat Middlings In High Concentrate Rations: Digestibility And Ruminal Metabolism (1995), B.S. Dalke, K.K. Bolsen, R.N. Jr. Sonon, Matthew A. Young
Wheat Middlings In High Concentrate Rations: Digestibility And Ruminal Metabolism (1995), B.S. Dalke, K.K. Bolsen, R.N. Jr. Sonon, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
Six medium-framed steers, fitted with ruminal cannulae were used in a 6 x 6 Latin square design and fed the following six high concentrat e (90%) rations: control; 5, 10, or 15% pelleted wheat middlings (WM) replacing the concentrate (dry rolled corn); and 5 or 10% pelleted WM replacing the roughage (chopped alfalfa hay). Dry matter (DM), organic matter (OM), and starch digestibilities decreased linearly when increasing levels of WM replaced the concentrate , but replacing the roughage increased DM and OM digestibilities linearly. WM could replace only up to 5 % of the concentrate without reducing nutrient digestibilities, but …
Effect Of Rumen Escape Amino Acids And Multiple Tba Implants On Feedlot Performance Of Lightweight Holstein Steer Calves (1995), B.J. Healy, Robert T. Brandt Jr., Evan C. Titgemeyer
Effect Of Rumen Escape Amino Acids And Multiple Tba Implants On Feedlot Performance Of Lightweight Holstein Steer Calves (1995), B.J. Healy, Robert T. Brandt Jr., Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Two hundred forty Holstein steers (343 lb) were stratified by weight and allotted to one of eight treatment combinations in a 2 x 4 factorial arrangement. Main effects were implant (Synovex-S (S) or Synovex-S + Finaplix-S (SF) on day 0, 87, 168, and 238 and level of rumen escape amino acids (Smartamine-ML (SML) at 0, 5, 10, or 15 grams/head/day). These levels of SML supplied 0, 2.75, 5.5, and 8.25 g/day of Llysine and 0, .75, 1.5, and 2.25 g/day of DL-methionine. Steers implanted with SF gained 4% faster, had a 4% improvement in feed:gain, a lower dressing percentage, 12% …
The Effect Of A Core Antigen Vaccine On Health And Performance Of Cattle Diagnosed With Bovine Respiratory Disease (1995), Gerald L. Stokka, Robert T. Brandt Jr., K.K. Kreikemeier, T. Milton
The Effect Of A Core Antigen Vaccine On Health And Performance Of Cattle Diagnosed With Bovine Respiratory Disease (1995), Gerald L. Stokka, Robert T. Brandt Jr., K.K. Kreikemeier, T. Milton
Kansas Agricultural Experiment Station Research Reports
When studied in receiving trials at three locations, health or performance of calves receiving a core antigen vaccine was not improved.
Effects Of Hot-Fat Trimming On Retail Display Color Of Three Beef Muscles (1995), S.R. Stuewe, Donald H. Kropf, Melvin C. Hunt, R.E. Campbell, Curtis L. Kastner
Effects Of Hot-Fat Trimming On Retail Display Color Of Three Beef Muscles (1995), S.R. Stuewe, Donald H. Kropf, Melvin C. Hunt, R.E. Campbell, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
Steaks from subprimal cuts from carcass sides that were either hot-fat-trimmed to .25 inch or not hot-f at-trimmed (control) were used to determine trimming effects on retail display color. After 14 days storage in vacuum bags at 30EF, subprimals were cut into 1-inch-thick steaks for evaluation. Specific muscles that were evaluated were the loin strip (longissimus lumborum) , inside round (semimembranosus only), an d the chuck clod (triceps brachii only). The steaks were packaged in polyvinylchloride (PVC) film and displayed. The loin strip steaks from hot-fat-trimmed sides were more discolored (P<.05) than from nontrimmed controls at 0, 3, and 4 days display, but both had acceptable color through 4 days of display. Treatments were not different for inside round steaks (P>.05) ; the deep location was less red (P …
Relationships Between Weaning Weight, Maternal Weaning Weight, And Milk Production In Polled Hereford Cattle (1995), J.B. Jr. Glaze, R.R. Schalles
Relationships Between Weaning Weight, Maternal Weaning Weight, And Milk Production In Polled Hereford Cattle (1995), J.B. Jr. Glaze, R.R. Schalles
Kansas Agricultural Experiment Station Research Reports
Performance data from a Polled Hereford herd selected for improved feed conversion were used to calculate a variety of genetic parameters. Heritabilities were .14 for weaning wt, .18 for maternal weaning wt., and .19 for milk production. The genetic correlations were -.10 between weaning weight and maternal weaning weight and 0 between weaning weight and milk production. However, the genetic correlation between maternal weaning weight and milk was . 99, indicating they are essentially the same trait. Milk EPDs published by most breed associations are calculate d as the maternal weaning weight. Our study strongly supports this method of estimating …
Yearling Scrotal Circumference Prediction Equation And Age Adjustment Factors For Various Breeds Of Beef Bulls (1995), J.M. Geske, R.R. Schalles, K.O. Zoellner
Yearling Scrotal Circumference Prediction Equation And Age Adjustment Factors For Various Breeds Of Beef Bulls (1995), J.M. Geske, R.R. Schalles, K.O. Zoellner
Kansas Agricultural Experiment Station Research Reports
Scrotal circumference measurements and other data were collected on 4,218 Angus, Red Angus, Brangus, Charolais , Gelbvieh, Hereford, Polled Hereford, Limousine, Salers, and Simmental bulls born in the spring of 1991. All were participants in selected on-farm and central bull tests. Our objectives for the study were to develop 205-and 365-day age-adjustment factors for scrotal circumference and derive a 365-day scrotal circumference prediction equation based on adjusted 205-day scrotal circumference. We determined that a 205-day scrotal circumference of approximately 21 cm is necessary to reach 32 cm at 1 year. Age-of-dam adjustment factor for 205-day scrotal circumference is +.8 cm …
Breed And Management Comparisons And Genetic Parameters For Carcass Traits (1995), K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Breed And Management Comparisons And Genetic Parameters For Carcass Traits (1995), K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Carcass data from 5 years of a long-term, rotational , crossbreeding project were used to calculate heritabilities, genetic and phenotypic correlations , and management effects and to compare breeds for marbling, ribeye area, and hot carcass weight. Angus, Brahman, Charolais, Hereford, Polled Hereford, Gelbvieh, and Simmental breeds were involved. Sixty percent of the steer calves were fed as calves and 40% as yearlings. Heritabilities were .40 for marbling, .46 for ribeye area, and .51 for carcass weight. Genetic and phenotypic correlations were high between carcass weight and ribeye area but low between marbling and the other traits. Steers fed as …
Influence Of Timing And Rate Of Gain On Puberty And Reproductive Performance Of Beef Heifers (1995), J.M. Smith, G.C. Lamb, J. Ernest Minton, Robert T. Brandt Jr., R.C. Cochran
Influence Of Timing And Rate Of Gain On Puberty And Reproductive Performance Of Beef Heifers (1995), J.M. Smith, G.C. Lamb, J. Ernest Minton, Robert T. Brandt Jr., R.C. Cochran
Kansas Agricultural Experiment Station Research Reports
Seventy-seven crossbred heifers (573 lb initial body weight) were developed in drylot and limit-fed a corn, sorghum silage diet predicted to produce gains of either 1 lb/day for the entire developmental period (EVENGAIN) or .25 lb/day for the first two-thirds of the period followed by 2 lb/day during the last third (LATEGAIN). Treatments began on November 15, 1993 and continued until April 25, 1994, the onset of the breeding season. Actual daily gains averaged 1.31 lb/day for EVENGAIN heifers, whereas LATEGAIN heifers averaged .55 lb/day for the first two-thirds of the feeding period and 2.5 lb daily for the last …
Effects Of Grazing System And Stocking Rate On Cow-Calf Performance In The Flint Hills (1995), R.C. Cochran, D.E. Johnson, K. C. Olson, David C. Hartnett, Clenton E. Owensby
Effects Of Grazing System And Stocking Rate On Cow-Calf Performance In The Flint Hills (1995), R.C. Cochran, D.E. Johnson, K. C. Olson, David C. Hartnett, Clenton E. Owensby
Kansas Agricultural Experiment Station Research Reports
A 6-year study was designed to measure the influences of stocking rate and grazing system on performance of cow-calf pairs grazing tallgrass prairie. This paper summarizes the initial 3 years. Late-season rest-rotation was compared to continuous grazing over low, moderate, and high stocking rates. No differences (P>.10) were observed in body weight of cows or calves as a result of grazing system or stocking rate. However, calf weaning weight tended (P=.20) to be greater with continuous grazing than with late season rest-rotation. Cow body condition score was unaffected (P>.10) by stocking rate or grazing system. Conception rates were …
Radiometric Measurement Of Forage Quantity (1995), R.C. Cochran, G. Towne, K. C. Olson
Radiometric Measurement Of Forage Quantity (1995), R.C. Cochran, G. Towne, K. C. Olson
Kansas Agricultural Experiment Station Research Reports
A 16-band multispectral radiometer (MSR) was used to measure the amount of forage biomass present on several dates in native tallgrass prairie pastures during the 1992 to 1994 growing seasons. Reflectance data collected with the MSR were used a s inputs for a neural network computer program. The neural network used the reflectance data to predict forage biomass. Biomass estimates made with the MSR were found to predict actual biomass, as measured by hand-clipping, across all plant growth stages with an error of approximately 6%. Radiometric determination of biomass is a reliable alternative to hand-clipping and can be accomplished in …
Wheat Middlings In High Concentrate Finishing Rations: Cattle Performance (1995), B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, K.K. Bolsen, Matthew A. Young
Wheat Middlings In High Concentrate Finishing Rations: Cattle Performance (1995), B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
One hundred twenty medium-framed steers were fed one of six high (90%) concentrate rations: control (0), 5, 10, or 15% pelleted wheat middlings (WM) replacing the concentrate (dry rolled corn) and 5 or 10% pelleted WM replacing the roughage (chopped alfalfa hay). Increasing WM replacement of the concentrate increased both dry matter (DM) intake and feed/gain ratio linearly, without influencing daily gain or final weight. WM replacement of the roughage decreased DM intake linearly, but it ha d no effect on daily gain, final weight, or feed efficiency . The data indicate that WM could replace only 5% of the …
Combinations Of Ruminally Degradable And Escape Protein For Implanted Finishing Steers (1995), C.T. Milton, Robert T. Brandt Jr., Evan C. Titgemeyer
Combinations Of Ruminally Degradable And Escape Protein For Implanted Finishing Steers (1995), C.T. Milton, Robert T. Brandt Jr., Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
One hundred forty-four crossbred medium framed steers (738 lb) were used to compare urea and soybean meal as basal supplemental nitrogen sources and sources of high (blood meal:corn gluten meal; BMCG) or low (soybean meal; SBM) ruminal escape proteins as additional protein supplementation. Basal diets were formulated to contain 1 0.8% crude protein (CP) and were supplemented with either urea or SBM (.91% and 5.55% of DM, respectively). An additional 2 percentage units of CP were either provided or not provided as SBM or as a 50:50 combination (protein basis) of BMCG. Steers were implanted with Revalor-S® and fed experimental …
Combinations Of Nonprotein Nitrogen And Natural Protein Affect Performance Of Finishing Steers Fed Flaked Corn Diets (1995), B.J. Healy, Robert T. Brandt Jr., T.P. Eck
Combinations Of Nonprotein Nitrogen And Natural Protein Affect Performance Of Finishing Steers Fed Flaked Corn Diets (1995), B.J. Healy, Robert T. Brandt Jr., T.P. Eck
Kansas Agricultural Experiment Station Research Reports
Two hundred crossbred steers (7 85 lb) were used to evaluate the effects of the relative proportion of supplemental nitrogen derived from soybean meal (SBM) and urea. Treatments included an unsupplemented negative control and four 13% CP diets containing SBM:urea proportions (nitrogen basis) of 100:0, 67:33, 33: 67, and 0:100. Steers fed the control diets gained 38% slower (P<.01); ate 4% less feed (P<.10); were 33% less efficient (P<.01); and had lighter carcasses (P<.01) with less backfat (P<.01), less kidney, pelvic, and heart fat (KPH; P<.12), less ribeye area (REA; P<.11) , and less marbling (P<.01) than nitrogen-supplemented steers. Among steers fed supplemented diets, feed intake increased linearly as proportion of SBM increased (P<.01) . Daily gain (P<.05) and feed:gain (P<.05) responded quadratically and was best for steers fed combinations of the nitrogen sources. Similarly, hot carcass weights and backfat thickness were greater (P<.06) for steers fed the mixed supplements. There was a tendency for a linear increase in KPH as proportion of urea in the diet was increased (P<.14). Yield grade, ribeye area, and marbling were unaffected by SBM:urea proportions. In high-concentrate finishing diets, at least some of the supplemental nitrogen should be derived from a natural, degradable-protein source.
How The Price Of Different Breeds Of Feeder Cattle Has Changed Over Time (1995), F.K. Brazle, J.R. Mintert, J. Iii Sartwelle, R.P. Jr. Bolze, Ted C. Schroeder
How The Price Of Different Breeds Of Feeder Cattle Has Changed Over Time (1995), F.K. Brazle, J.R. Mintert, J. Iii Sartwelle, R.P. Jr. Bolze, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
Data on feeder steer characteristics, breeds, and prices were collected in 1986/87 and 1993 at Kansas and Missouri feeder cattle auctions to identify changes in buyers' preferences for various breeds. Results from models of feeder steer price/characteristics indicate that the relative value of many breeds changed over time. Relative to Hereford steers, Angus, Hereford x Angus cross, Continental cross, and low percentage Brahman steers all gained in price from 1986/87 to 1993. Longhorn Cross steers' price declined relative to Hereford steers over the same time period.
Determinants Of Prices For Cow-Calf Pairs (1995), J.L. Parcell, F.D. Hiner, Ted C. Schroeder
Determinants Of Prices For Cow-Calf Pairs (1995), J.L. Parcell, F.D. Hiner, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
A study of price determinants for cow-calf pairs was undertaken at a local Kansas auction company during 1993. Cow breed, age, health, condition score, horns, frame size, and whether the cow h ad been bred back impacted cow-calf pair values, as well as calf weight, health, and frame score. Addition ally, pairs per pen significantly impacted prices. Young healthy cows with healthy large calves received the highest prices.