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Genetic Parameters For Growth And Carcass Traits From Crossbreeding, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Genetic Parameters For Growth And Carcass Traits From Crossbreeding, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Growth and carcass data from 5 years of a long-term, rotational, crossbreeding project were used to calculate heritabilities and genetic and phenotypic correlations for direct and maternal birth and weaning weight, gain on feed, hot carcass weight, ribeye area, marbling score, and age at slaughter. Angus, Brahman, Hereford, Charolais, Simmental, and Gelbvieh breeds were involved. Heritabilities of traits ranged from low (maternal weaning weight 0.04) to moderate (direct weaning weight 0.41). Direct birth weight, direct weaning weight, gain on feed, and hot carcass weight had moderate to high genetic correlations. Marbling had negative genetic correlations with birth and weaning weight …
The Influence Of Various Levels Of Supplemental Starch And Degradable Intake Protein On Prairie Hay Intake And Digestion By Beef Steers, R.C. Cochran, E.S. Vanzant, Evan C. Titgemeyer, Timothy J. Jones, K. C. Olson
The Influence Of Various Levels Of Supplemental Starch And Degradable Intake Protein On Prairie Hay Intake And Digestion By Beef Steers, R.C. Cochran, E.S. Vanzant, Evan C. Titgemeyer, Timothy J. Jones, K. C. Olson
Kansas Agricultural Experiment Station Research Reports
A study was conducted to determine the effect of varying the amount of supplemental degradable intake protein (DIP) and starch on prairie hay intake and digestibility. In general, DIP increased forage intake, whereas starch decreased intake. Diet digestibility also improved with increasing DIP; however, the effect of starch on digestion depended on the level of feeding. Digestible dry matter intake (which estimates total energy input) responded dramatically to DIP but not to starch. These results illustrate the positive effect of DIP on forage intake and digestibility; however, supplying additional starch within a DIP level appeared to have minimal effect on …
Effect Of Grain Content On The Nutritive Value Of Whole-Plant Grain Sorghum Silage, B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, K.K. Bolsen, Matthew A. Young
Effect Of Grain Content On The Nutritive Value Of Whole-Plant Grain Sorghum Silage, B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
This experiment was conducted to determine the effect of grain content on the nutritive value of whole-plant grain sorghum silage. Silage dry matter (DM), organic matter (OM), and crude protein (CP) contents increased with increasing levels of grain in the reconstituted, whole-plant silages, whereas neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents decreased as the level of grain increased from 0 to 48%. When fed to sheep (used as a model), voluntary DM intake and DM and OM digestibilities increased in a linear manner, whereas ADF digestibility decreased with increasing level of grain. Crude protein and NDF digestibilities …
Effect Of Bacterial Inoculants On The Fermentation Of Alfalfa Silages, K.K. Bolsen, D.R. Bonilla, R.A. Hart-Thakur, Matthew A. Young
Effect Of Bacterial Inoculants On The Fermentation Of Alfalfa Silages, K.K. Bolsen, D.R. Bonilla, R.A. Hart-Thakur, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
The efficacy of 13 commercial bacterial silage inoculants was evaluated on 3rd and 4th cutting alfalfa. All inoculants supplied at least 100,000 colony-forming units (cfu) of lactic acid bacteria (LAB) per gram of ensiled crop, and each inoculant increased the rate and efficiency of the ensiling process. Inoculated alfalfa silages had lower pH values; higher lactic acid contents; and lower acetic acid, ethanol, and ammonia-nitrogen contents than control (untreated) silages. The addition of dextrose (fermentable substrate) in combination with a bacterial inoculant improved the quality of the fermentation phase in both cuttings of alfalfa.
Steam Pasteurization Of Beef Carcasses, D.E. Schafer, R.K. Prasai, Abbey L. Nutsch, Randall K. Phebus, John R. Wolf, John A. Unruh, Curtis L. Kastner
Steam Pasteurization Of Beef Carcasses, D.E. Schafer, R.K. Prasai, Abbey L. Nutsch, Randall K. Phebus, John R. Wolf, John A. Unruh, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
This research evaluated the effectiveness of a newly patented steam-pasteurization process for reducing bacterial populations on the surfaces of freshly slaughtered beef carcasses. The process was developed jointly by Frigoscandia Food Processing Systems (Bellevue, WA) and Excel Corp. (Wichita, KS), a division of Cargill (Minneapolis, MN). In laboratory studies, portions of prerigor beef carcasses inoculated with very high levels of three pathogens, Salmonella, Escherichia coli O157:H7, and Listeria, were treated in a prototype steam-pasteurization chamber, which effectively eliminated at least 99.9% of all three pathogens and was most effective when used in combination with other standard commercial decontamination methods. The …
Variation In And Effects Of Prefabrication Fat Trimming On Yields And Prediction Equation Accuracies Of Retail Product And Fat Trim, L.V. Cundiff, K.E. Gregory, Kenneth E. Kemp, R.M. Koch, Michael E. Dikeman
Variation In And Effects Of Prefabrication Fat Trimming On Yields And Prediction Equation Accuracies Of Retail Product And Fat Trim, L.V. Cundiff, K.E. Gregory, Kenneth E. Kemp, R.M. Koch, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Carcass data from one side of 1,149 steers born from 1986 to 1990 were analyzed to develop means for carcass traits and retail product percentage by yield grades. Carcasses from 610 of these steers born from 1988 to 1990 were fabricated to two fat trim levels (.30 and .00 in.), with subcutaneous fat and intermuscular (internal) fat weighed separately. Subcutaneous fat from the primal round, loin, rib, chuck, brisket, and flank in excess of .30 in. plus the kidney knob were considered to constitute an industry "˜hot-fat trim equivalent' (HFTE). Quadratic regression curves were plotted for percent retail product (RP) …
Effects Of Postweaning Management System And Breed On Growth And Carcass Traits, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Effects Of Postweaning Management System And Breed On Growth And Carcass Traits, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Data from 5 years of a long-term, rotational, crossbreeding project were used to calculate heritabilities and correlations and to make breed comparisons for growth rate and carcass traits in two different postweaning management systems. The traits studied were weight per day of age, hot carcass weight, ribeye area, marbling score, and days of age at slaughter. One group was placed on full feed after weaning. A second group underwent a backgrounding phase for 7 months at Louisiana State University before being placed on feed at KSU. The breeds involved were Angus, Brahman, Charolais, Hereford, Simmental, and Gelbvieh. Differences in heritabilities …
Comparisons Among Crossbred Beef Cattle For Growth And Carcass Traits, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Comparisons Among Crossbred Beef Cattle For Growth And Carcass Traits, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Data from 5 years of a long-term, rotational crossbreeding project were used to compare breeds for growth and carcass traits. The traits of interest were direct and maternal birth and weaning weights, gain on feed, hot carcass weight, ribeye area, marbling score, and slaughter age. Angus, Brahman, Hereford, Charolais, Simmental, and Gelbvieh breeds were involved. Simmental and Gelbvieh were used as terminal breeds, so maternal effects were not calculated for them. Brahman breeding caused an increased direct birth weight of the calves, but the maternal influence of Brahman decreased birth weight. No difference occurred in maternal weaning weight among the …
Effect Of Increasing Urea Level In Protein Supplements On Intake And Digestion Of Low-Quality Tallgrass-Prairie Forage By Beef Steers, H.H. Köster, R.C. Cochran, E.S. Vanzant, G. St Jean, Evan C. Titgemeyer
Effect Of Increasing Urea Level In Protein Supplements On Intake And Digestion Of Low-Quality Tallgrass-Prairie Forage By Beef Steers, H.H. Köster, R.C. Cochran, E.S. Vanzant, G. St Jean, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Twelve ruminally fistulated steers were used to evaluate the effect of changing the proportion of supplemental degradable intake protein (DIP) derived from urea on forage intake and digestion. Steers had ad libitum access to a low-quality tallgrass-prairie hay. Supplemental treatment groups were: 1) 0% of the supplemental DIP from urea, 2) 20% of the supplemental DIP from urea, and 3) 40% of the supplemental DIP from urea. Supplements were formulated to contain 30% CP and were fed with prairie hay once daily. Results from this study indicated that urea can replace up to 40% of the supplemental DIP without affecting …
Effect Of Monensin On Grain Bloat In Cattle, M.L. Coe, N. Wallace, Kenneth E. Kemp, J.C. Parrott, Tiruvoor G. Nagaraja
Effect Of Monensin On Grain Bloat In Cattle, M.L. Coe, N. Wallace, Kenneth E. Kemp, J.C. Parrott, Tiruvoor G. Nagaraja
Kansas Agricultural Experiment Station Research Reports
Twelve ruminally cannulated Holstein steers were used to determine the effect of monensin (0, 20, 30, and 40 g/ton) on grain bloat. Steers were fed a bloat-provocative, high-grain diet at 1% of body weight twice daily. Monensin premix was added directly to individual steers diets at the time of feeding. The severity of bloat was scored daily on a scale of 0 (no bloat) to 5 (severe bloat). The scoring was based on the degree of frothiness and abdominal distention. Bloat scores (mean of wk 2, 3, and 4) were lower (P<.0l) for monensin-fed steers than for the controls. The mean bloat scores were 1.43, 1.18, 1.00, and .93 for 0, 20, 30 and 40 g/ton monensin, respectively. Total gas production during in vitro ruminal fermentation tended to be higher (P=.12) for control than for monensin-fed steers. Ruminal pH and total volatile fatty acid concentrations were unaffected by treatment. Monensin decreased frothy bloat caused by the bloat-provocative diet, and the degree of control appeared to be greater with higher levels of monensin.
Natural Degradable Protein And Roughage Type For Implanted Finishing Steers Fed Dry-Rolled Corn Diets, C.T. Milton, Robert T. Brandt Jr., Gerry L. Kuhl, Evan C. Titgemeyer, James S. Drouillard
Natural Degradable Protein And Roughage Type For Implanted Finishing Steers Fed Dry-Rolled Corn Diets, C.T. Milton, Robert T. Brandt Jr., Gerry L. Kuhl, Evan C. Titgemeyer, James S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Three hundred eighty-four crossbred, yearling steers (810 lb) were used to evaluate soybean meal (SBM), sunflower meal (SFM), and combinations of the two as protein supplements and supplemental protein effects in diets containing silage or alfalfa as dietary roughage. All diets contained 1.0% urea (dry matter basis). An additional 2 percentage units of crude protein were either not provided or provided as SBM, SFM, or a 50:50 combination (protein basis) of SBM and SFM. Steers were implanted with Revalor-Sfi and fed experimental diets for 126 days. No interactions between protein supplementation and roughage source were observed. Daily feed intake and …
Supplementing Growing Holstein Steers Fed A Corn-Urea Diet With A Mixture Of Essential Amino Acids Increases Performance, R.H. Wessels, Evan C. Titgemeyer
Supplementing Growing Holstein Steers Fed A Corn-Urea Diet With A Mixture Of Essential Amino Acids Increases Performance, R.H. Wessels, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Six ruminally cannulated Holstein steers (550 lb) implanted with Revalor-S were infused abomasally with water or a mixture of six amino acids in a crossover experiment (two 14-day periods) to evaluate effects on nitrogen balance. The mixture was comprised of amino acids that potentially may be limiting in lightweight steers, namely (g/day): lysine (5.3), methionine (3.3), threonine (3.2), tryptophan (1 .0), histidine (2.1), and arginine (5.5). Steers were fed at levels just below ad libitum intake. The diet contained 86% rolled corn, 10% prairie hay, 3% mineral and vitamin premixes, and 1% urea (as-fed). Amino acid infusion increased nitrogen retention …
Effect Of Feeding Rumen-Protected Lysine With Different Levels Of Soybean Meal To Growing Steers, R.H. Wessels, Evan C. Titgemeyer
Effect Of Feeding Rumen-Protected Lysine With Different Levels Of Soybean Meal To Growing Steers, R.H. Wessels, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
To test the efficacy of rumen-protected lysine and methionine, six steers (486 lb) were used in a 6 4 incomplete Latin square design and fed corn-urea diets (85% concentrate) alone or supplemented with 2 or 4% soybean meal to give dietary crude protein levels of 12.5, 13.2, and 14.0% (as fed-basis). Each diet was fed with or without 5 g/day Smartamine-ML (rumen-protected lysine and methionine). Steers were fed to gain 2.6 lb/day. Nitrogen retention increased linearly, from 30.7 g/day (0% soy) to 35.5 g/day (4% soy) as the level of soybean meal and, thus, crude protein, increased in the diet. …
Effects Of Temporarily Altering Alfalfa Levels In High-Concentrate Diets On Subacute Acidosis, B.J. Healy, Robert T. Brandt Jr.
Effects Of Temporarily Altering Alfalfa Levels In High-Concentrate Diets On Subacute Acidosis, B.J. Healy, Robert T. Brandt Jr.
Kansas Agricultural Experiment Station Research Reports
Four ruminally cannulated crossbred steers (882 lb) were used to investigate the effects of temporarily altering the levels of alfalfa in a high-concentrate diet on ruminal characteristics during a bout of experimentally induced subacute acidosis. A diet based on dry rolled corn with 8% alfalfa hay was fed before and after a 2-day challenge phase when steers were forced to consume 2.5% of their body weight in 90 minutes each day after a prior 24-hour fast. During the challenge phase, steers were fed diets containing 5, 8, 11, or 14% alfalfa. Feed intake quickly recovered for steers fed all but …
Effect Of Implantation And Melengestrol Acetate Feeding On Blood Serum Profiles And Performance Of Heifers, Robert T. Brandt Jr., C.T. Milton, N. Campbell, Evan C. Titgemeyer
Effect Of Implantation And Melengestrol Acetate Feeding On Blood Serum Profiles And Performance Of Heifers, Robert T. Brandt Jr., C.T. Milton, N. Campbell, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Payout characteristics of Revalor-H and Finaplix-H were measured in 30 heifers (678 pounds) assigned to one of six treatments: 1) negative control, 2) melengestrol acetate (MGA) (.5 mg/hd/d), 3) Finaplix-Hfi, 4) Finaplix-H + MGA, 5) Revalor-Hfi, and 6) Revalor-H + MGA. Blood samples were collected by jugular puncture on days 0, 1, 3, 5, 7, 13, 21, 28, 42, 56, 84, 112, and 140. Following implantation with either Revalor-H or Finaplix-H, serum trenbolone (TB) increased markedly at 1 and 3 days after implantation, then decreased through day 42. A second peak in serum TB was observed on day 56. Between …
Summary Of Grazing Research On Kansas Conservation Reserve Program Land, Michael R. Langemeier, P.D. Ohlenbusch
Summary Of Grazing Research On Kansas Conservation Reserve Program Land, Michael R. Langemeier, P.D. Ohlenbusch
Kansas Agricultural Experiment Station Research Reports
Animal performance and the net return per acre for four CRP research sites in Kansas in 1994 and 1995 were examined. Both mowing and prescribed burning increased animal performance in 1994. Mowing was economically feasible on one of the four sites. Prescribed burning was economically feasible on three of four sites. Mowing or burning treatments were not repeated in 1995, the second year of the analysis. Second-year animal performance was similar between the untreated plots and those that were mowed or burned in 1994. Net returns per acre for the site that was grazed by cow-calf pairs ranged from -$5.96 …
Efficacy Of Electronic Identification In Beef Cattle, A.R. Spell, S.D. Utter, L.R. Corah
Efficacy Of Electronic Identification In Beef Cattle, A.R. Spell, S.D. Utter, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
To evaluate the potential of using electronic implants (transponders) for maintaining identity from birth to slaughter, calves born and implanted in Montana were followed through the feedlot phase to their ultimate slaughter at commercial packing plants. At spring branding, 138 calves were implanted with electronic identification transponders positioned underneath the scutiform cartilage at the base of the ear. Four steers died prior to weaning. After weaning, 109 steers were transported to a commercial feedlot i n Kansas (group 1) and the remaining 25 steers (group 2) were maintained at the Montana ranch for 1 year and then placed in a …
The Effect Of Implants On Gain Of Steers And Heifers Grazing Native Grass, F.K. Brazle
The Effect Of Implants On Gain Of Steers And Heifers Grazing Native Grass, F.K. Brazle
Kansas Agricultural Experiment Station Research Reports
Four trials were con ducted to determine the effect of different implants on steers and heifers grazing native grass pastures for different lengths of time. In addition, two groups of steers were followed through a feeding period to determine if previous implanting had a residual effect on gain. The implanted (Ralgrofi, Ralgrofi Magnum , Synovex Sfi) steers gained faster than the controls; however, no differences in gain occurred among implants. In the finishing group that went on grass at 687 lb, implants had no effect on subsequent feedlot gain. In the second group (on grass at 569 lb and grazing …
National Forage Survey Results: Trace Mineral And Related Nutrient Levels, L. Corah, D. Dargatz, C. Peters
National Forage Survey Results: Trace Mineral And Related Nutrient Levels, L. Corah, D. Dargatz, C. Peters
Kansas Agricultural Experiment Station Research Reports
A National Forage Survey was conducted in 18 states to determine the trace mineral and related nutrient content of forages grown in the United States. Most forages sampled were harvested hays utilized as winter feed for beef cow herds. The trace element most commonly deficient in the forages sampled was zinc. Copper and cobalt levels were adequate in 36 and 34.1% of the samples, respectively. In contrast, manganese was adequate (above 40 ppm) in 76% of the samples and was deficient (below 20 ppm) only in 4.7%. The copper antagonists, such as iron and molybdenum, were marginal to high in …
Amino Acid Supplementation To Growing And Finishing Steers, C.G. Campbell, C.T. Milton, Evan C. Titgemeyer
Amino Acid Supplementation To Growing And Finishing Steers, C.G. Campbell, C.T. Milton, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
One hundred British and British cross steers, averaging 631 lb ( initial wt) were used in a growing and finishing study to evaluate the effects of unprotected amino acid supplementation on cattle performance and carcass characteristics. All diets contained 1% of a nonprotein nitrogen source, and treatments were: no additional supplemental protein (UREA), 2) supplemental protein from soybean meal (SBM), 3) 13 grams/day of an amino acid supplement (Low AA), and 4) 26 grams/day of an amino acid supplement (High AA). The Low AA treatment supplied 2 grams methionine, 8 grams lysine, 2 grams threonine, and 1 gram tryptophan per …
Using Near-Infrared Reflectance Spectroscopy For Rapid Nutrient Evaluation Of Sorghum Silage, K.J. Budiongo, L.H. Harbers, B.W. Seabourn, K.K. Bolsen, B.E. Brent
Using Near-Infrared Reflectance Spectroscopy For Rapid Nutrient Evaluation Of Sorghum Silage, K.J. Budiongo, L.H. Harbers, B.W. Seabourn, K.K. Bolsen, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
This research was designed to develop a set of prediction equations to measure nutrient composition of Kansas sorghum silages by near-infrared reflectance spectroscopy (NIRS). Because sorghum silages are highly variable in grain content, we included a large number of cultivars to develop a robust set of equations for dry matter, crude protein, neutral detergent fiber, and acid detergent fiber. The results indicate that NIRS analysis of sorghum silages is feasible.
Effect Of A Propionic Acid Bacterial Inoculant On Fermentation And Aerobic Stability Of Whole-Plant Corn Silage, K.K. Bolsen, D.R. Bonilla, G.L. Huck, R.A. Hart-Thakur, Matthew A. Young
Effect Of A Propionic Acid Bacterial Inoculant On Fermentation And Aerobic Stability Of Whole-Plant Corn Silage, K.K. Bolsen, D.R. Bonilla, G.L. Huck, R.A. Hart-Thakur, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
The effects of a strain of Propionibacterium shermanii, applied with and without lactic acid bacteria (LAB), on the fermentation and aerobic stability of whole-plant corn silage was determined using laboratory-scale silos. The addition of LAB increased the rate of fermentation, and all inoculated silages underwent a more efficient ensiling process than control silage. Only silages made with P. shermanii had measurable levels of propionic acid in the 90-day silages. Corn silages made with P. shermanii were more stable when exposed to air than control or LAB-inoculated silages.
Timing Of Gain Does Not Alter Puberty And Reproductive Performance Of Beef Heifers Fed A High-Roughage Diet, J.M. Lynch, G.C. Lamb, B.L. Miller, J. Ernest Minton, R.C. Cochran, Robert T. Brandt
Timing Of Gain Does Not Alter Puberty And Reproductive Performance Of Beef Heifers Fed A High-Roughage Diet, J.M. Lynch, G.C. Lamb, B.L. Miller, J. Ernest Minton, R.C. Cochran, Robert T. Brandt
Kansas Agricultural Experiment Station Research Reports
Eighty crossbred heifers (549 lb initial body weight) were developed in drylot and limit-fed a forage 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 7, 1994 and continued until April 24, 1995 (onset of the breeding season). Actual daily gains over the entire feeding period averaged 1.18 and 1.10 lb/day for EVENGAIN and LATEGAIN heifers, respectively. Age and weight at puberty were not affected by feeding treatment. Body …
Assessing Nutrient Composition And Digestibility Of Tallgrass-Prairie Hay, R.C. Cochran, K. C. Olson, Evan C. Titgemeyer, Timothy J. Jones
Assessing Nutrient Composition And Digestibility Of Tallgrass-Prairie Hay, R.C. Cochran, K. C. Olson, Evan C. Titgemeyer, Timothy J. Jones
Kansas Agricultural Experiment Station Research Reports
Thirteen steers were used in a 4 13 incomplete Latin square to determine chemical composition and digestibility for 13 samples of tallgrass prairie hay. Hays were collected from a variety of locations in east-central Kansas and represented a wide array of harvest dates and storage conditions. Steers were fed prairie hay and soybean meal at 1.5% and .2% of body weight, respectively, to equalize intakes relative to body weight and prevent degradable intake protein (DIP) from limiting extent of digestion. Prairie hay samples were analyze d for N, ADIN, ADF, NDF, ADIA, monosaccharides (sugars), and alkali-labile phenolic acids (lignin components). …
Effect Of Annual Fire On Tallgrass Prairie Legumes, G. Towne, A.K. Knapp
Effect Of Annual Fire On Tallgrass Prairie Legumes, G. Towne, A.K. Knapp
Kansas Agricultural Experiment Station Research Reports
Total legume density was significantly higher in annually burned prairie (8.0 stems/m2) than in unburned prairie (3.0 stems/ m2). Densities of six species were higher (P<.05) in burned than in unburned prairie, whereas only one legume species decreased from annual fire. Total legume biomass did not differ between burned (11.3 g/m2) and unburned prairie (10.5 g/m2). Most legume species either are favored by fire or are fire tolerant, and their persistence in annually burned grassland suggests that they may play an important role in the nitrogen budget of tallgrass prairie.
In Vitro Estimation Of Ruminal Protein Degradability Of Forages, I.E.O. Abdelgadir, R.C. Cochran, E.S. Vanzant, Evan C. Titgemeyer
In Vitro Estimation Of Ruminal Protein Degradability Of Forages, I.E.O. Abdelgadir, R.C. Cochran, E.S. Vanzant, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
Ruminal degradation of alfalfa and prairie hay protein was estimated using a proteolytic enzyme from Streptomyces griseus with or without pretreatment with cellulase or a broad spectrum carbohydrase (driselase). Estimates of the undegradable intake protein (UIP) as a percentage of total protein derived from the protease alone were higher than that measured in the animal (i.e., in vivo). Pretreatment of hay samples with cellulase (48 h incubation) or driselase improved the accuracy of UIP predictions compared with those determined using the protease alone.
Inheritance Of The "Rat-Tail" Syndrome, R.R. Schalles
Inheritance Of The "Rat-Tail" Syndrome, R.R. Schalles
Kansas Agricultural Experiment Station Research Reports
A form of congenital hypotrichosis, commonly known as rat-tail, is characterized by the colored hair anywhere on the body being short, curly, malformed, and sometimes sparse and an abnormal tail switch. The "rat-tail" syndrome is controlled by interaction between two loci. Cattle that express this syndrome must have at least one gene for black color and be heterozygous at the other locus involved.
Agronomic And Silage Quality Traits Of Winter Cereals, M.K. Siefers, G.L. Huck, J.E. Turner, J.S. Pendergraft, K.K. Bolsen, Matthew A. Young
Agronomic And Silage Quality Traits Of Winter Cereals, M.K. Siefers, G.L. Huck, J.E. Turner, J.S. Pendergraft, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
Agronomic and silage quality traits were examined for 12 winter cereals harvested at two stages of maturity. Forage dry matter (DM) yields were higher at the mid-dough than the early-heading stage. Post 90 barley had the highest whole-plant DM yield at the early-heading stage, and Presto triticale had the highest yield at the mid-dough stage. Newton wheat had the lowest whole-plant DM yield at both stages of maturity. The first cutting of all varieties originally was intended to be at the late-boot stage, but harvest was delayed by frequent rainfall and wet soils in May, and field-wilting conditions were less …
Implant Strategies For Finishing Calves, C.T. Milton, Robert T. Brandt Jr., Gerry L. Kuhl, P.T. Anderson
Implant Strategies For Finishing Calves, C.T. Milton, Robert T. Brandt Jr., Gerry L. Kuhl, P.T. Anderson
Kansas Agricultural Experiment Station Research Reports
Two hundred-sixteen Angus and Angus-cross steer calves (690 lb) were used in a 129- day finishing study to evaluate different implant strategies, including an experimental new implant for feedlot cattle that contains 28 mg of estradiol benzoate and 200 mg of trenbolone acetate (EBTBA). Treatments were 1) nonimplanted control, 2) implanted and reimplanted with Synovex-Sfi, 3) single initial implant with EBTBA, 4) single initial implant with Revalor-Sfi, 5) implanted with Synovex-S and reimplanted with EBTBA, and 6) implanted and reimplanted with EBTBA. Initial implants and reimplants were administered on day 0 and 63, respectively. All implant treatments increased feed intake, …
Improving Silage Quality, K.K. Bolsen, B.E. Brent, M.K. Siefers, G.L. Huck, J.E. Turner, Matthew A. Young
Improving Silage Quality, K.K. Bolsen, B.E. Brent, M.K. Siefers, G.L. Huck, J.E. Turner, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
Results at Kansas State University from over 200 laboratory-scale trials and 28 farm-scale trials showed that bacterial inoculants consistently improved preservation efficiency and nutritive value of the ensiled material. In contrast, anhydrous ammonia or urea decreased dry matter recovery and production per ton of crop ensiled. Economic analysis also favored the use of bacterial inoculants over nonprotein nitrogen additives. Research conducted using corn, sorghum, and alfalfa silages showed that sealing the exposed surface dramatically reduced top spoilage losses in bunker, trench, or stack silos.