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Full-Text Articles in Life Sciences
Nutritive Value Of Forages As Affected By Soil And Climatic Differences, F.G. Clary, B.E. Brent, D. Richardson, Evans E. Banbury, C.W. Spaeth, A.B. Erhart, D.W. Arnett, Fred W. Boren, H.B. Perry
Nutritive Value Of Forages As Affected By Soil And Climatic Differences, F.G. Clary, B.E. Brent, D. Richardson, Evans E. Banbury, C.W. Spaeth, A.B. Erhart, D.W. Arnett, Fred W. Boren, H.B. Perry
Kansas Agricultural Experiment Station Research Reports
Wintering and finishing performances of beef steers have been compared at Colby, Garden City, Manhattan and Mound Valley. When feeds were grown locally, cattle at Garden City and Colby outperformed those at Manhattan and Mound Valley (Bulletin 507, 1967). Since all cattle were of the same origin, differences were credited to the climate and/ or feed composition. In 1968-9 (trials 5 and 6), cattle were fed at all locations on feed produced at Garden City. During the wintering phase in trial 5, cattle at Colby and Garden City significantly outgained those at Mound Valley (P<.0l). Performance at Manhattan was intermediate. In trial 6, table 18, during wintering, steers at Manhattan gained faster (P<.01) than those at Colby or Garden City but not those at Mound Valley. Finishing gains did not differ significantly in either trial. Results of the last two tests being more uniform than results of the previous four indicates some of the differences are from the site where the feed is produced.
Protein Synthesis In The Rumen: Ruminal Urease Inhibition By Acetohydroxamic Acid, A. Adepoju, F. Portela, B.E. Brent
Protein Synthesis In The Rumen: Ruminal Urease Inhibition By Acetohydroxamic Acid, A. Adepoju, F. Portela, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
When urea is fed to ruminants, it is immediately converted to ammonia by an enzyme, urease. The ammonia usually becomes available faster than rumen bacteria can convert it to protein. Studies were reported last year (Bulletin 518) on attempts to slow down, or inhibit urease with acetohydroxamic acid. This year effects of acetohydroxamic acid on rumen ammonia, and volatile fatty acid levels in both sheep and cattle have been studied. In both, rumen ammonia was depressed for about 4 hours after feeding, and rumen fluid urea levels were increased, showing that urease was inhibited. Ammonia data for the steers showed …
All-In-One High Energy Sorghum Silage Compared With And Without Antibiotic And Conventional High Energy Sorghum Silage For Feedlot Steers, L.I. Smart, C.L. Drake
All-In-One High Energy Sorghum Silage Compared With And Without Antibiotic And Conventional High Energy Sorghum Silage For Feedlot Steers, L.I. Smart, C.L. Drake
Kansas Agricultural Experiment Station Research Reports
Research done here in 1967 and 1968 indicated that adding a complete supplement to forage as it was ensiled gave results equal to using soybean meal at the time of feeding. The research continued to improve the complete silage. Previous work indicated that low levels of antibiotics increased bacterial growth and improved cellulose digestion in vitro. Therefore, two levels of antibiotics were tested in all-in-one silage ensiled and fed during 1968 and 1969.
Influence Of Feeding Practices And Season Of Birth On Calf Performance, A.R. Singh, R.R. Schalles, W.H. Smith, F.B. Kessler
Influence Of Feeding Practices And Season Of Birth On Calf Performance, A.R. Singh, R.R. Schalles, W.H. Smith, F.B. Kessler
Kansas Agricultural Experiment Station Research Reports
The ability of beef cows to produce heavy, vigorous and good quality calves every year is one of their most important economic traits. Feeding practices have been reported to influence average daily gain (ADG) and weaning weight. We evaluated creep-feeding, noncreep-feeding, season of birth, and other factors that affect preweaning performance of calves. At the Fort Hays Branch Experiment Station, Hays, Kansas, purebred sires had been used many generations in the grade Hereford herd. Calves, born in both spring and fall, were randomly allotted to creep-fed and noncreep-fed groups every year. Cows and calves grazed native pastures.
Effect Of Weaning Ration On Reproductive Phenomena In Beef Cows On Range, G.H. Kiracofe, R.R. Schalles, G.B. Marion
Effect Of Weaning Ration On Reproductive Phenomena In Beef Cows On Range, G.H. Kiracofe, R.R. Schalles, G.B. Marion
Kansas Agricultural Experiment Station Research Reports
Data are available to indicate proper wintering rations for beef cows under dry lot conditions, but few are available under range management for Kansas. This is our first attempt to determine adequate winter rations for reproductive efficiency in Kansas and to notice reproductive inefficiencies for future study.
Different Methods Of Managing Bluestem Pastures, E.F. Smith, Clenton E. Owensby, B.W. Swanson, J.D. Mckendrick
Different Methods Of Managing Bluestem Pastures, E.F. Smith, Clenton E. Owensby, B.W. Swanson, J.D. Mckendrick
Kansas Agricultural Experiment Station Research Reports
This experiment was to determine the effect of increased early summer stocking and burning on cattle performance, productivity of pastures and range condition as determined by plant population changes. Early stocking at twice the normal rate for the first half the growing season was tried hoping for more gain per acre and cattle ready for dry lot finishing at midsummer. If grass recovers the last half of the season, it could be "mined" the first half when highest in nutritive value.
Identical Twin Cows On Winter Bluestem Pasture Used To Measure The Value Of Supplemental Feed And Of Vitamin A, G.A. Greathouse, R.W. Swanson, E.F. Smith
Identical Twin Cows On Winter Bluestem Pasture Used To Measure The Value Of Supplemental Feed And Of Vitamin A, G.A. Greathouse, R.W. Swanson, E.F. Smith
Kansas Agricultural Experiment Station Research Reports
Two pairs of identical twin heifer calves were grazed together on bluestem pasture from 1961 until 1968. During the two winters, 1961-63 each ones daily supplement was 1 pound of ground sorghum grain, 1 pound of soybean oil meal, 20,000 I.U. of Vitamin A and 0.05 lb. of dicalcium phosphate. Salt was always available. The third winter {l963-64}, as bred two year olds, one of each pair was randomly selected to continue receiving the winter supplement, the other to receive only salt and bluestem pasture. They were pastured together, and those fed were separated each morning during the winter to …
An Evaluation Of Heatmount Detectors In Beef Cattle Under Range Conditions, A.R. Singh, G.H. Kiracofe, R.R. Schalles
An Evaluation Of Heatmount Detectors In Beef Cattle Under Range Conditions, A.R. Singh, G.H. Kiracofe, R.R. Schalles
Kansas Agricultural Experiment Station Research Reports
Kamar heatmount detectors were used last spring on 45 Polled Hereford cows 3 to 12 years old. Bulls ran with the cows. Most cows became pregnant, which lessened observations as the breeding season progressed. Detectors were placed on rumps with adhesive according to directions. Generally, the front edge of the detector was farther to the rear on heavier cattle than on lighter cattle.First observation was May 28, 1968. Observations then were made weekly for 9 weeks, by checking for presence or absence of detectors. All cows that lost detectors or had the detector activated were palpated rectally to determine if …
Effect Of Pre-Slaughter Withdrawal From Feed On Cattle Fasted For Varying Lengths Of Time, T. Carr, Dell M. Allen, P. Phar, R. Cox
Effect Of Pre-Slaughter Withdrawal From Feed On Cattle Fasted For Varying Lengths Of Time, T. Carr, Dell M. Allen, P. Phar, R. Cox
Kansas Agricultural Experiment Station Research Reports
Feedstuffs pass through cattle in approximately four days; however, steam-flaked rations may have a faster rate of passage. How much value do cattle derive from feed fed the last few days prior to slaughter, particularly cattle taken directly from feedlot to slaughter plant? Cattle that have been shrunk kill more easily than those with full intestinal tracts. Perhaps withdrawing cattle from feed 1, 2, or 3 days before they are slaughtered would economically benefit both feeder and slaughterer.
Improvement Of Beef Cattle Through Breeding Methods, W.H. Smith, J. Akinokun, R.R. Schalles
Improvement Of Beef Cattle Through Breeding Methods, W.H. Smith, J. Akinokun, R.R. Schalles
Kansas Agricultural Experiment Station Research Reports
Two inbred lines of purebred Shorthorn cattle were established and progressively developed, to study production traits and effects of inbreeding. Inbreeding was initiated in the Wernace Premier Line in 1949 and in the Mercury line in 1952. Both lines have remained closed to outside breeding since. Inbreeding has progressively increased as the result of successive generations of half sibbing.
The Value Of Chlortetracycline (Aureomycin) And Sulfamethazine Fed Independently And In Combination To Weanling Beef Calves Following Shipment, C.L. Drake, L.I. Smart, E.F. Smith
The Value Of Chlortetracycline (Aureomycin) And Sulfamethazine Fed Independently And In Combination To Weanling Beef Calves Following Shipment, C.L. Drake, L.I. Smart, E.F. Smith
Kansas Agricultural Experiment Station Research Reports
Two hundred weaning calves were received in two shipments and placed on experiment. The calves were weighed, ear tagged and tattooed as rapidly as possible after being received, and were treated as follows: Treatment A - No oral medication (Control) Treatment B - Fed 350 mg. sulfamethazinel per head daily Treatment C - Fed 350 mg. chlortetracycline per head daily Treatment D - Fed 350 mg. sulfamethazine and 350 mg. chlortetracycline per head daily The cattle were fed sorghum silage to consumption and 3 lbs. sorghum grain (containing the medication) per head daily. They were injected with 10cc Combiotic (penicillin …
The Influence Of Marbling And Maturity On Beef Tenderness, H.J. Tuma, D. Grant, R. Covington
The Influence Of Marbling And Maturity On Beef Tenderness, H.J. Tuma, D. Grant, R. Covington
Kansas Agricultural Experiment Station Research Reports
The beef carcass quality grading system currently used has been challenged by many who say current standards are too high and that the amount of marbling to attain a given grade should be decreased.
The Effect Of Aureomycin And Sulmet Combinations In Feed On The Performance Of Cattle, P.A. Phar, P.R. Zimmer
The Effect Of Aureomycin And Sulmet Combinations In Feed On The Performance Of Cattle, P.A. Phar, P.R. Zimmer
Kansas Agricultural Experiment Station Research Reports
Two feedlot trials were conducted during the summer of 1967 at the Morris Feed Yards, Marris, Kansas, to study effects of aureomycin (chlortetracycline) and sulfamethazine fed alone or in combination on weight gain, feed efficiency and general health of newly arrived feeder calves.
The Cattle Feeding Industry Of Kansas, P. Phar
The Cattle Feeding Industry Of Kansas, P. Phar
Kansas Agricultural Experiment Station Research Reports
The Kansas cattle feeding industry has grown tremendously since 1956. The 1968 January Cattle on Feed Report shows more than ten times as many cattle in commercial feedlots as in 1956. Farm feedlots have also increased, but since 1966 over 50 percent of our cattle have been fed in lots with at least 1,000 head capacity.
The Kansas Beef Cattle Improvement Program, H.W. Westmeyer, K.O. Zoellner
The Kansas Beef Cattle Improvement Program, H.W. Westmeyer, K.O. Zoellner
Kansas Agricultural Experiment Station Research Reports
The Kansas Beef Cattle Improvement Program is to help improve beef cow herds in Kansas and to provide information that will be valuable to producers in selecting breeding animals and making management decisions. The program is not to encourage competition among herds. Environmental conditions vary from herd to herd so competitive among herds cannot be "under the same rules".
Comparison Of Time And Method In Freeze-Marking Cattle, R.R. Schalles, C.L. Drake, Dell M. Allen
Comparison Of Time And Method In Freeze-Marking Cattle, R.R. Schalles, C.L. Drake, Dell M. Allen
Kansas Agricultural Experiment Station Research Reports
Freeze marking for within-herd identification was used on 65 Hereford females. The cattle were 18 months to nearly three years old. Three numerals were placed on the right rump of each animal in the fall of 1967. The "branding irons" used were four-inch brass numerals with a half inch face. Dry ice and ethyl alcohol were used as the coolant with 40, 50 and or 60 seconds of contact time as well as liquid nitrogen with 39, 35 or 40 seconds of contact. Three men each applied one of the three numerals using dry ice and alcohol coolant with 60 …
Different Methods Of Managing Bluestem Pastures, E.F. Smith, Clenton E. Owensby, S.P. Kolstad
Different Methods Of Managing Bluestem Pastures, E.F. Smith, Clenton E. Owensby, S.P. Kolstad
Kansas Agricultural Experiment Station Research Reports
Studied were the effects of early season heavy stocking and burning on cattle performance, productivity of pastures and range condition as determined by plant population changes. The objective of early season heavy stocking at twice the normal rate for the first half the growing season is to obtain more gain per acre, have cattle available for dry lot finishing at mid summer and determine if the grass will recover the last half of the season. Forage quality is best early in the growing season.
The Value Of Dehydrated Alfalfa And Delayed Grain Feeding Young Cows On Winter Bluestem, E.F. Smith, D. Richardson, C.L. Drake, M.C. Hall
The Value Of Dehydrated Alfalfa And Delayed Grain Feeding Young Cows On Winter Bluestem, E.F. Smith, D. Richardson, C.L. Drake, M.C. Hall
Kansas Agricultural Experiment Station Research Reports
Two primary objectives of this test were to: (1) compared dehydrated alfalfa with soybean oil meal as a winter supplemental feed on bluestem pasture for young cows to be bred shortly after the winter feeding period. (2) Determine any merit in feeding grain the last 50 days of the winter period compared with feeding the same total amount of grain throughout the winter when heifers are to be bred shortly after the winter feeding period.
Nutritive Value Of Forages As Affected By Soil And Climatic Differences, D. Richardson, F.G. Clary, Evans E. Banbury, C.W. Spaeth, A.B. Erhart, D.W. Arnett, Fred W. Boren, H.B. Perry
Nutritive Value Of Forages As Affected By Soil And Climatic Differences, D. Richardson, F.G. Clary, Evans E. Banbury, C.W. Spaeth, A.B. Erhart, D.W. Arnett, Fred W. Boren, H.B. Perry
Kansas Agricultural Experiment Station Research Reports
Four previous tests (Kans. Agri. Expt. Sta. Bull. 507:7, 1967) at Colby, Garden City, Manhattan, and Mound Valley, using beef steers from the same herd and feeding the same feedstuffs, grown locally, produced differences in performance. What is the cause(s) of the differences? This test was designed as previous ones, except that all locations used the same feed, which was produced at Garden City. Sorghum silage was dehydrated and pelleted for easier transportation. The calves were wintered on the silage pellets and alfalfa hay. Silage pellets were gradually removed from the ration and sorghum grain added for finishing. Analyses of …
Sorghum Grain As The Only Protein Source In All-Concentrate Heifer Finishing Rations: Two Levels Of Urea In An All-Concentrate Ration, E.F. Smith, D. Richardson, C.L. Drake, B.E. Brent
Sorghum Grain As The Only Protein Source In All-Concentrate Heifer Finishing Rations: Two Levels Of Urea In An All-Concentrate Ration, E.F. Smith, D. Richardson, C.L. Drake, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
Tests reporting on sorghum grain as the only protein source in a diet for finishing cattle are reported in Kansas Agr. Expt. Station Bulletins 493 and 507 and on page 24 in this bulletin. The three rations fed are show in table 10. The sorghum grain was obtained as needed at a local elevator, mixed with other ration ingredients at the Animal Husbandry elevator and delivered, usually in 2000 lb. loads to the self feeders when needed.
Inhibition Of Ruminal Urease, B.E. Brent, A. Adepoju, F. Portela, D. Richardson
Inhibition Of Ruminal Urease, B.E. Brent, A. Adepoju, F. Portela, D. Richardson
Kansas Agricultural Experiment Station Research Reports
Rumen bacteria elaborate an enzyme, urease. Urease is capable of breaking down urea to ammonia and carbon dioxide. Rumen bacteria then incorporate the ammonia into new amino acids and bacterial protein. Thus, urea can be used as a non-nitrogen source for ruminants. Unfortunately, urease often makes ammonia available faster than it can be used by rumen bacteria. That leads to poor utilization of urea or, in extreme cases, to toxicity.
The Effects Of Feeding A High Concentrate Ration Containing 25% Ground Beef Manure To Fattening Heifers In Concrete And Soil-Surfaced Lots, C.L. Drake, L.I. Smart, E.F. Smith, R.I. Lipper
The Effects Of Feeding A High Concentrate Ration Containing 25% Ground Beef Manure To Fattening Heifers In Concrete And Soil-Surfaced Lots, C.L. Drake, L.I. Smart, E.F. Smith, R.I. Lipper
Kansas Agricultural Experiment Station Research Reports
This is a cooperative project with the Department of Agricultural Engineering to study surface runoff, in addition to animal performance. Twenty Hereford heifers were randomly allotted to four equal sized lots: 2 surfaced with concrete and 2 with soil. Self-feeders in soil-surfaced lots have concrete aprons.
Urea Vs. Soybean Meal In Wintering And Finishing Rations For Beef Steers, D. Richardson, E.F. Smith, B.E. Brent
Urea Vs. Soybean Meal In Wintering And Finishing Rations For Beef Steers, D. Richardson, E.F. Smith, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
A previous test using sorghum silage (Kans. Agri. Expt. Sta. Bull. 507:5, 1967) indicated that 3 pounds of grain per day in silage would supply enough available energy for reasonably good utilization of nonprotein nitrogen (urea). However, additional grain apparently increased the utilization of urea. This is the second test to obtain information on the minimum amount of readily available energy as grain necessary for efficient utilization of nonprotein nitrogen as a substitute for natural protein. During the wintering phase, the roughage was corn silage with an average of 38.5% dry matter. Grain made up 27% of the dry matter. …
Effects Of Supplementing Corn Silage With Mga And Feeding Varying Levels Of Sorghum Grain To Feed-Lot Heifers, L.I. Smart, C.L. Drake
Effects Of Supplementing Corn Silage With Mga And Feeding Varying Levels Of Sorghum Grain To Feed-Lot Heifers, L.I. Smart, C.L. Drake
Kansas Agricultural Experiment Station Research Reports
Melengestrol acetate (MGA) 1S a new drug recently approved for use in the supplement portion of rations of feed-lot heifers. The recommended level is from 0.25 to 0.50 mg. per head per day. A 48-hour withdrawal period is required before slaughter. Several experiment stations have shown improved rate of gain, feed utilization and suppressed estrus in feed-lot heifers on high concentrate rations plus MGA.
The Value Of An Artery Clamp To Dehorn Cattle, C.L. Drake, R.R. Schalles, C.W. Smith
The Value Of An Artery Clamp To Dehorn Cattle, C.L. Drake, R.R. Schalles, C.W. Smith
Kansas Agricultural Experiment Station Research Reports
A preliminary trail involving use of an artery clamp and a drawing and description of the clamp are reported in Bulletin 507. This trial involved 42 horned heifers owned and fed by a cooperating feedlot operator. The heifers were individually weighed and placed on these experimental treatments: 1. Control - not dehorned 2. Dehorned using clamp; arteries pulled 3. Dehorned not using clamp; arteries pulled All heifers were placed in one large lot and fed the same ration for 30 days after being dehorned.
High Protein Sorghum Grain With No Added Protein In All Concentrate Cattle Finishing Rations; Urea And Soybean Oil Meal In All Concentrate Rations, E.F. Smith, D. Richardson, C.L. Drake, B.E. Brent
High Protein Sorghum Grain With No Added Protein In All Concentrate Cattle Finishing Rations; Urea And Soybean Oil Meal In All Concentrate Rations, E.F. Smith, D. Richardson, C.L. Drake, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
Trials at several research centers as well as in Kansas (Bulletin 483, page 32) have shown roughage may be satisfactorily omitted from finishing rations for cattle and doing so, often reduces feed required per pound of gain. That has made it feasible to try to finish cattle on all grain diet5, when the grain has sufficient protein, and to omit other protein sources as well as roughage. Other research on this subject is reported in Kansas Bulletins 493 and 507 and on page in this bulletin.
A Comparison Of All-In-One And Conventional Sorghum Silage With And Without Mga For Feedlot Heifers, L.I. Smart, C.L. Drake
A Comparison Of All-In-One And Conventional Sorghum Silage With And Without Mga For Feedlot Heifers, L.I. Smart, C.L. Drake
Kansas Agricultural Experiment Station Research Reports
Silage is being utilized in larger quantities in beef cattle growing and fattening rations. Hammes et al. (1964) showed that higher levels of corn silage can be used because gains from high silage and high grain rations are similar. However, more total digestible nutrients may be harvested per acre and the cost of gain is usually less with silage. Several investigators have shown advantages to certain additives with silage.