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Full-Text Articles in Animal Sciences
Copper Levels And Sources In Pre- And Post-Calving Diets Of First-Calf Cows, Dennis R. Brink, Gene H. Deutscher, Erick Muehlenbein
Copper Levels And Sources In Pre- And Post-Calving Diets Of First-Calf Cows, Dennis R. Brink, Gene H. Deutscher, Erick Muehlenbein
Nebraska Beef Cattle Reports
A study replicated over two years involving 197 first-calf cows compared reproductive performance, growth and health of calves and concentration of Cu in liver, colostrum, and milk. Three treatments were evaluated: control (no Cu but Mo and Fe added to hay diet); 200 mg Cu from CuSO4; and 100 mg Cu from AvailaCu® added daily. In 1998 a fourth treatment, 400 mg AvailaZn® was included with 100 mg AvailaCu®. Supplementation of Cu and/or Zn did not improve total pregnancy rate, or growth and health of calves. In 1998 cows fed only AvailaCu® conceived 10 days earlier compared to …
Metabolizable Protein Estimates Of Treated Soybean Meal Products, Ryan Mass, D. J. Jordon, Tony Scott, Terry J. Klopfenstein
Metabolizable Protein Estimates Of Treated Soybean Meal Products, Ryan Mass, D. J. Jordon, Tony Scott, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
The metabolizable protein (MP, % of CP) concentrations of the following three treated soybean meal (SBM) products and commodity SBM were estimated: nonenzymatically browned SBM (Soy Pass®), expeller SBM (SoyPlus®), and a heated SBM:soyhull mixture (AminoPlus®). Separate lots of each product were measured in two separate trials. Commodity SBM yielded consistent MP values, while treated SBM products differed by 11- 58% in MP. Differences in MP appear to be due to differences in undegraded intake protein (UIP) concentration. The UIP concentrations of treated SBM products merits regular monitoring.
Effects Of Increasing Rumensin Level During A Potential Acidosis Challenge, Mark Blackford, Todd Milton, Terry J. Klopfenstein, D. J. Jordon, Rob Cooper, Tony Scott, N. A. Singari, Cal Parrott
Effects Of Increasing Rumensin Level During A Potential Acidosis Challenge, Mark Blackford, Todd Milton, Terry J. Klopfenstein, D. J. Jordon, Rob Cooper, Tony Scott, N. A. Singari, Cal Parrott
Nebraska Beef Cattle Reports
Nine ruminally fistulated yearling steers were used in a 9 x 2 Incomplete Latin square to evaluate benefits of an increase in dietary Rumensin level during an imposed acidosis challenge. Feeding Rumensin, at either 30 or 45g/ ton reduced acidosis on the challenge day. However, increasing the dietary Rumensin concentration to 45g/ton was required to reduce acidosis for the five days following that challenge. Feeding 45g/ton reduced ruminal pH area below 5.6 when compared to the normal level of 30g/ton during the five days following the challenge.
2000 Nebraska Beef Cattle Report
2000 Nebraska Beef Cattle Report
Nebraska Beef Cattle Reports
Cow/Calf
Age of Calf at Weaning of Spring-Calving Beef Cows and the Effect on Production Economics
Supplementing Metabolizable Protein to Yearling Heifers Grazing Winter Range
Refinement of the MGA/PGF Synchronization Program for Heifers Using a 19-Day PGF Injection
Replacement Heifer Development Programs
Copper Levels and Sources in Pre- and Post-calving Diets of First-Calf Cows
Growing
Effects of Length of Grain Feeding and Backgrounding Programs on Beef Carcass Characteristics
Compensatory Growth Response and Breakeven Economics of Yearling Steers on Grass
Evaluation of the 1996 Beef Cattle NRC Model Predictions of Intake and Gain for Calves Fed Low or Medium Energy Density …
Sorting Or Topping-Off Pens Of Feedlot Cattle, Rob Cooper, Terry J. Klopfenstein, Todd Milton
Sorting Or Topping-Off Pens Of Feedlot Cattle, Rob Cooper, Terry J. Klopfenstein, Todd Milton
Nebraska Beef Cattle Reports
Two sources of data were analyzed to determine performance differences of cattle with differing degrees of finish within a pen. One source of data was from large-pen commercial feedlots, while the other source of data was from individually fed steers at the University of Nebraska. The results indicate leaner cattle within a pen have lower quality grades and carcass weights, but are gaining faster and more efficiently than their fatter pen-mates at slaughter. Therefore, additional days on feed for the leaner cattle within a pen, in order to increase carcass weight and quality grade, may be economical.
Refinement Of The Mga/Pgf Synchronization Program For Heifers Using A 19-Day Pgf Injection, Gene H. Deutscher, Rex Davis, Dave Colburn, Doug O'Hare
Refinement Of The Mga/Pgf Synchronization Program For Heifers Using A 19-Day Pgf Injection, Gene H. Deutscher, Rex Davis, Dave Colburn, Doug O'Hare
Nebraska Beef Cattle Reports
A two-year study was conducted on 240 yearling heifers to refine the MGA/ PGF synchronization program by using a 19-day PGF injection. All heifers were fed MGA for 14 days and received PGF injection on either Day 17 or Day 19 after the MGA period. Heifers were heat detected and bred by AI using semen from one sire. The Day 19 PGF injection caused a higher (16%) percentage of heifers to cycle by 72 hours after injection, a higher (6%) percentage of heifers to cycle during the 5-day breeding period, and higher pregnancy rates in 5 days (8%) and in …
Replacement Heifer Development Programs, Gene H. Deutscher, Andy Applegarth, Dave Colburn, Rex Davis
Replacement Heifer Development Programs, Gene H. Deutscher, Andy Applegarth, Dave Colburn, Rex Davis
Nebraska Beef Cattle Reports
A three-year study was conducted to evaluate heifer development programs using Sandhills resources. During the first two years, spring-born yearling heifers that grazed subirrigated meadows for 30 days in May pre-breeding had greater weight gains. However, the heifers tended to have lower (10%) pregnancy rates than the heifers on hay and range during May. Grazing meadows in May with summer-born heifers had no effect on pregnancy rates when heifers were bred in September. In comparing spring- and summer-born heifers, initial results indicate yearling and 2-year-old reproductive performance and calf weaning weights may be lower for the summer-born heifers. Additional studies …
Dietary Phosphorus Effects On Waste Management And Nutrient Balance In The Feedlot, Galen E. Erickson, Terry J. Klopfenstein, Todd Milton, Daniel T. Walters
Dietary Phosphorus Effects On Waste Management And Nutrient Balance In The Feedlot, Galen E. Erickson, Terry J. Klopfenstein, Todd Milton, Daniel T. Walters
Nebraska Beef Cattle Reports
Four experiments were conducted, two with calves in the winter/spring and two with yearlings during the summer, to evaluate the effects of decreasing dietary phosphorus on nutrient balance in the feedlot. The control diets averaged .38% phosphorus, whereas the experimental diets were formulated to not exceed requirements (~.25%). Phosphorus excretion was reduced by feeding the lower phosphorus diet. Phosphorus removed in manure at cleaning was not different. However, when manure was corrected for soil phosphorus, phosphorus removal was decreased by 59% in the summer trials and 38% in the calf trials during the winter/spring by feeding the experimental diet.
Effect Of Increasing Dietary Corn Silage On Performance, Digestibility And Nitrogen Mass Balance In The Feedlot, Galen E. Erickson, Terry J. Klopfenstein, Todd Milton, Ryan Mass
Effect Of Increasing Dietary Corn Silage On Performance, Digestibility And Nitrogen Mass Balance In The Feedlot, Galen E. Erickson, Terry J. Klopfenstein, Todd Milton, Ryan Mass
Nebraska Beef Cattle Reports
Three dietary corn silage levels (15, 30, and 45% of diet DM) were evaluated in corn finishing diets fed to calves through the winter/spring and yearlings during the summer to determine effects on performance and nitrogen mass balance in feedlot. Yearling gains decreased quadratically with increasing corn silage; however, N and OM removed in manure was greatest for the 30% silage treatment. Calf gains decreased linearly as silage increased; however, N and OM removed in manure was greatest for the 45% silage treatment. Increasing dietary corn silage resulted in decreased gains but did influence manure N with no effect on …
The Effects Of Induced Stress And Supplemental Chromium On Meat Quality Of Finishing Heifers, Dana Hanson, Chris R. Calkins, Todd Milton
The Effects Of Induced Stress And Supplemental Chromium On Meat Quality Of Finishing Heifers, Dana Hanson, Chris R. Calkins, Todd Milton
Nebraska Beef Cattle Reports
Organic chromium was fed to heifers to evaluate its effect on reducing the consequence of stress. Cattle in this trial were subjected to induced stress by estrus and social interaction. The induced stress was not sufficient to cause dark cutting beef. Meat from stressed cattle tended to have lower (P = .09) redness (a*) values, lower (P = .11) shear force, and higher (P= .09) ultimate pH than non-stressed animals. The effectiveness of chromium in the prevention of dark cutting beef could not be assessed.
Compensatory Growth Response And Breakeven Economics Of Yearling Steers On Grass, D. J. Jordon, Terry J. Klopfenstein, Todd Milton, Rob Cooper
Compensatory Growth Response And Breakeven Economics Of Yearling Steers On Grass, D. J. Jordon, Terry J. Klopfenstein, Todd Milton, Rob Cooper
Nebraska Beef Cattle Reports
A trial was conducted to evaluate compensatory growth in yearling cattle while on summer pasture, following variations of winter feed restriction. Winter gains were FAST, FAST/SLOW, SLOW/FAST, and SLOW. No summer gain differences were found among restricted cattle (FAST/SLOW, SLOW/ FAST, or SLOW); however, gains were increased on grass compared to steers on the FAST treatment. SLOW cattle compensated 17.4% during grazing. FAST steers had lower slaughter breakevens compared to SLOW (64.05 vs 66.94 $/cwt, respectively). Due to little compensation by steers on the SLOW treatment, steers on the FAST treatment had heavier slaughter weights resulting in lower slaughter breakevens.
Effects Of Length Of Grain Feeding And Backgrounding Programs On Beef Carcass Characteristics, Terry J. Klopfenstein, Rob Cooper, D. J. Jordon, Drew Shain, Todd Milton, Chris R. Calkins, Carlo Rossi
Effects Of Length Of Grain Feeding And Backgrounding Programs On Beef Carcass Characteristics, Terry J. Klopfenstein, Rob Cooper, D. J. Jordon, Drew Shain, Todd Milton, Chris R. Calkins, Carlo Rossi
Nebraska Beef Cattle Reports
Data from 534 cattle serially slaughtered indicate percentages of carcasses grading Choice increased 30 + 2.4 percentage units for each .1 in increase in rib fat. Marbling score increased 75 units (200 = Slight00) for each .1 in increase in fat. If cattle are fed to a common rib fat endpoint, and within the ranges of winter (.51-1.35 lb/day) and summer gains (1.26-1.85 lb/day) studied, we conclude backgrounding program has little or no effect on marbling or carcass quality grade. Also, systems that increase age of cattle will reduce tenderness, but if meat is cooked properly, risk of tough steaks …
Exporting Feedlot Manure To Off-Farm Users, Richard K. Koelsch, Keith Glewen, Tom Trewhitt, Daniel T. Walters
Exporting Feedlot Manure To Off-Farm Users, Richard K. Koelsch, Keith Glewen, Tom Trewhitt, Daniel T. Walters
Nebraska Beef Cattle Reports
A survey of Nebraska feedlots suggests the majority of feedlots do not export manure to off-farm customers despite a common lack of land base (owned or managed by the feedlot) for using the nitrogen and phosphorus in manure. Only a small portion of the feedlots in Nebraska are actively marketing manure as a product with value by packaging agronomic and nuisance avoidance services with the manure in an effort to enhance its value. A separate survey of manure users suggests that the reason users purchase manure was for its crop nutrient value. However, many users were uncomfortable relying on the …
Feed Program Impact On Land Requirements For Managing Manure Nutrients From A Feedlot, Richard K. Koelsch
Feed Program Impact On Land Requirements For Managing Manure Nutrients From A Feedlot, Richard K. Koelsch
Nebraska Beef Cattle Reports
Using data from UNL feeding trials (1998 Nebraska Beef Report, pp. 86- 88) designed to compare the impact of protein and phosphorus intake on nutrient excretion, an estimate is made of the land requirement for manure application. A balanced diet formulated using the 1996 NRC was compared to other typical feed rations. The standard industry ration required an additional 100 and 400 acres of land to manage the additional manure nitrogen and phosphorus excreted, respectively, by a 1,000 head feedlot. A spreadsheet tool is introduced for estimating land requirements for manure produced by alternative feeding programs.
Growth Implants For Heifers, Terry L. Mader
Growth Implants For Heifers, Terry L. Mader
Nebraska Beef Cattle Reports
In a 110-d experiment, feedlot heifers (mean initial weight = 820 lb) that received an estradiol benzoate (EB) + trenbolone acetate (TBA) implant, Synovex® Plus™, gained faster and more efficiently than sham-implanted (control) heifers. Heifers that received only TBA implants had lower intakes and lower quality grades than control heifers, but were more efficient in feed conversion than control and EB implanted heifers. On the basis of improved yield grade and larger ribeye areas, along with no increases in fatness, the combined use of EB and TBA provided for greater quantities of lean meat from higher priced cuts than did …
Effect Of Diafil (Diatomaceous Earth) Fed With Or Without Rumensin® And Tylan®, On Performance, Internal Parasite And Coccidiosis Control In Finishing Cattle, Todd Milton, Terry J. Klopfenstein
Effect Of Diafil (Diatomaceous Earth) Fed With Or Without Rumensin® And Tylan®, On Performance, Internal Parasite And Coccidiosis Control In Finishing Cattle, Todd Milton, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
One hundred seventy-nine steers were used in a 2 &#;&#;2 factorial experiment to determine if DiaFil, diatomaceous earth, enhances finishing performance. Treatments were: control; 3% DiaFil; Rumensin® and Tylan® (R/T) fed at 25 and 10 g/ton, respectively; or DiaFil + R/T (DM basis). Feeding DiaFil alone reduced daily gain compared with control and DiaFil+ R/T, while gain of steers fed R/T was intermediate. Compared with control, efficiency was reduced 8% when steers were fed DiaFilalone. Steers fed R/T or DiaFil+R/T were 9% more efficient than those fed DiaFil alone. The addition of DiaFil alone reduces …
Effect Of Dry, Wet, Or Rehydrated Corn Bran On Performance Of Finishing Yearling Steers, Todd Milton, Terry J. Klopfenstein, D. J. Jordon, Rob Cooper, Rick Stock
Effect Of Dry, Wet, Or Rehydrated Corn Bran On Performance Of Finishing Yearling Steers, Todd Milton, Terry J. Klopfenstein, D. J. Jordon, Rob Cooper, Rick Stock
Nebraska Beef Cattle Reports
Sixty steers were individually fed finishing diets to evaluate if corn bran form affects the energy value of wet corn gluten feed. Corn bran replaced 40% (DM basis) dry-rolled corn as dry (86% DM), wet (37% DM), or rehydrated (37% DM). Dry matter intake was higher for steers fed dry bran compared with other treatments. Daily gain and efficiency were 15 and 18% higher for the control diet compared with the average of corn bran diets. Gain and efficiency were similar among corn bran diets. Corn bran form has limited influence on the energy value of wet corn gluten feed.
Sugar Beet Pulp And Corn Silage For Growing Yearling Steers, Jessica Park, Ivan G. Rush, Burt Weichenthal
Sugar Beet Pulp And Corn Silage For Growing Yearling Steers, Jessica Park, Ivan G. Rush, Burt Weichenthal
Nebraska Beef Cattle Reports
British crossbred steers with an average weight of 735 lb were fed in a 92-day growing trial. Silo Guard II®, an additive containing an amylase enzyme and sulfur salts, was used to treat corn silage and beet pulp. Cattle received either untreated corn silage, treated corn silage, or treated corn silage and treated beet pulp (35% of ration DM). Average daily gains were not significantly different between treatments. Dry matter intake was lower with the diet containing beet pulp, resulting in a better feed conversion compared to the treated and untreated corn silage diets.
Evaluation Of The 1996 Beef Cattle Nrc Model Predictions Of Intake And Gain For Calves Fed Low Or Medium Energy Density Diets, Trey Patterson, Terry J. Klopfenstein, Todd Milton, Dennis R. Brink
Evaluation Of The 1996 Beef Cattle Nrc Model Predictions Of Intake And Gain For Calves Fed Low Or Medium Energy Density Diets, Trey Patterson, Terry J. Klopfenstein, Todd Milton, Dennis R. Brink
Nebraska Beef Cattle Reports
Data from feeding 54 diets in seven previous beef cattle growing studies were used to evaluate the 1996 NRC model for the accuracy of intake and gain predictions. Calf weights and diets were inputs into the model, and actual intakes were used to calculate predicted gain and actual gains were used to calculate predicted intakes. The model over-predicted calf intakes on low quality diets and under-predicted intakes on high quality diets. The model over-predicted gains on high quality diets and under-predicted gains on low quality diets. The NRC model did not accurately predict performance of cattle on low quality roughage …
Age Of Calf At Weaning Of Spring-Calving Beef Cows And The Effect On Production Economics, Richard J. Rasby, Chuck Story, Richard T. Clark, Todd Milton, Mark Dragastin
Age Of Calf At Weaning Of Spring-Calving Beef Cows And The Effect On Production Economics, Richard J. Rasby, Chuck Story, Richard T. Clark, Todd Milton, Mark Dragastin
Nebraska Beef Cattle Reports
Spring-calving cows were used to evaluate effects of calf age at weaning on production economics. Weaning treatments were early (calf age 150 d, EW), traditional (calf age 210 d, NW), and late (calf age 270 d, LW). Annual cow costs were greater for LW than EW and NW groups. Replacement heifer development costs were higher for EW compared to NW and LW heifers. Net income per finished steer was greater for EW and NW steers than for LW steers. When carcass data were adjusted to the fat depth of the EW steers, net income differences among groups were reduced. Breakeven …
Whole Or Cracked Corn In Growing Rations For Steer Calves, Ivan G. Rush, Burt Weichenthal, Brad Van Pelt
Whole Or Cracked Corn In Growing Rations For Steer Calves, Ivan G. Rush, Burt Weichenthal, Brad Van Pelt
Nebraska Beef Cattle Reports
Crossbred steer calves were fed growing rations that included whole or cracked corn fed in a mixed ration or fed separately and cleaned up before feeding the other ingredients in the ration. Intakes of corn fed separately were regulated to match ad libitum dry matter intakes averaging 5 pounds per day in a 120 day trial. Daily gains and feed conversions were similar for both mixed rations and cracked corn fed separately, and only slightly lower when whole corn was fed separately. Including costs for corn cracking and/or mixing resulted in similar ration costs per pound of gain.
Influence Of Diet On Total And Acid Resistant E. Coli And Colonic Ph, Tony Scott, Casey Wilson, Doreen Bailey, Terry J. Klopfenstein, Todd Milton, Rodney A. Moxley, David R. Smith, Jeff Gray, Laura Hungerford
Influence Of Diet On Total And Acid Resistant E. Coli And Colonic Ph, Tony Scott, Casey Wilson, Doreen Bailey, Terry J. Klopfenstein, Todd Milton, Rodney A. Moxley, David R. Smith, Jeff Gray, Laura Hungerford
Nebraska Beef Cattle Reports
Nine steers were fed finishing diets in a replicated 3x3 Latin square design to determine if dietary manipulation would alter total and acid resistant E. coli populations. Manipulating diet by limit-feeding of finishing diets did not affect total or acid-resistant E. coli populations. Altering dietary ingredients did not affect total E. coli populations; however, steers fed diets containing dry-rolled or high-moisture corn had lower acid-resistant E. coli populations. Following completion of the Latin Square, all animals were fed alfalfa hay ad libitum for five days. Switching steers to alfalfa hay lowered both total and acid-resistant E. coli populations.
Effects Of Programmed Gain Feeding Strategies On Performance And Carcass Characteristics Of Yearling Steers, Tony Scott, Todd Milton, Terry J. Klopfenstein, Terry L. Mader, Simone Holt
Effects Of Programmed Gain Feeding Strategies On Performance And Carcass Characteristics Of Yearling Steers, Tony Scott, Todd Milton, Terry J. Klopfenstein, Terry L. Mader, Simone Holt
Nebraska Beef Cattle Reports
Two hundred forty-five crossbred yearling steers were used in a randomized complete block design to determine effects of including a programmed gain phase in the feeding period on performance and carcass characteristics. Including a programmed gain phase in the finishing period resulted in similar cumulative daily gains and feed conversions when compared with steers allowed to consume feed ad libitum. Programming gain reduced the total amount of feed consumed per animal; however, the lack of an improvement in feed conversion coupled with slight numerical differences in hot carcass weights resulted in net profits favoring ad libitum feeding.
The Effect Of V-Max® On Performance And Carcass Characteristics Of Finishing Cattle Fed Corn And Corn By-Product Finishing Diets, Tony Scott, Todd Milton, Bill Dicke, Pete Poppert, Larry Hollis
The Effect Of V-Max® On Performance And Carcass Characteristics Of Finishing Cattle Fed Corn And Corn By-Product Finishing Diets, Tony Scott, Todd Milton, Bill Dicke, Pete Poppert, Larry Hollis
Nebraska Beef Cattle Reports
Seven hundred sixty-two crossbred steers were used in a feedlot trial to determine the effect of V-Max® on performance, carcass characteristics, and the incidence and severity of liver abscesses. Finishing diets included either V-max® or the combination of Rumensin® and Tylan®. Performance was not different between the two treatments; however, including V-max® in the diet resulted in an increased incidence and severity of liver abscesses. Numbers of steers with small abscesses were similar between treatments; however, moderate and severe liver abscesses were increased in steers fed V-Max® compared to steers fed the combination of Rumensin® and Tylan®.
Escape Protein Supplementation Of Yearling Steers And Summer Born Calves On Native Sandhills Range, Casey Wilson, Terry J. Klopfenstein, Don C. Adams
Escape Protein Supplementation Of Yearling Steers And Summer Born Calves On Native Sandhills Range, Casey Wilson, Terry J. Klopfenstein, Don C. Adams
Nebraska Beef Cattle Reports
A trial was conducted to evaluate the effects of escape protein supplementation on pasture gains and subsequent finishing performance of cross-bred yearling steers and summer-born calves. Yearling steers and calves were assigned to one of two summer treatments: escape protein supplement or unsupplemented control. Escape protein supplementation improved pasture gains in supplemented steers and calves. Forage dry matter intake during summer grazing was lower for supplemented than unsupplemented steers and calves. Improved gains on range from escape protein were maintained in the feedlot by summer-born calves but not yearling steers.
Effects Of Length Of Grain Feeding And Backgrounding Programs On Beef Carcass Characteristics, Terry J. Klopfenstein, Rob Cooper, D. J. Jordon, Drew Shain, Todd Milton, Chris R. Calkins, Carlo Rossi
Effects Of Length Of Grain Feeding And Backgrounding Programs On Beef Carcass Characteristics, Terry J. Klopfenstein, Rob Cooper, D. J. Jordon, Drew Shain, Todd Milton, Chris R. Calkins, Carlo Rossi
Nebraska Beef Cattle Reports
Data from 534 cattle serially slaughtered indicate percentages of carcasses grading Choice increased 30 + 2.4 percentage units for each .1 in increase in rib fat. Marbling score increased 75 units (200 = Slight00) for each .1 in increase in fat. If cattle are fed to a common rib fat endpoint, and within the ranges of winter (.51-1.35 lb/day) and summer gains (1.26-1.85 lb/day) studied, we conclude backgrounding program has little or no effect on marbling or carcass quality grade. Also, systems that increase age of cattle will reduce tenderness, but if meat is cooked properly, risk of tough steaks …
Protein Evaluation Of Porcine Meat And Bone Meal Products, Tony Scott, Ryan Mass, Casey Wilson, Terry J. Klopfenstein, Austin Lewis
Protein Evaluation Of Porcine Meat And Bone Meal Products, Tony Scott, Ryan Mass, Casey Wilson, Terry J. Klopfenstein, Austin Lewis
Nebraska Beef Cattle Reports
Thirteen commercially available porcine meat and bone meal products from both independent renderers and commercial packing plants were evaluated in a lamb-digestion study for the following variables: crude protein, undegradable intake protein, metabolizable protein, apparent nitrogen digestibility and true nitrogen digestibility. As a whole, the products varied widely with respect to all of the variables measured with the exception of apparent nitrogen digestibility, indicating that feeding value of commercially available meat and bone meal products also varies widely, although all of the products tested had acceptable protein digestibilities.
Supplementing Metabolizable Protein To Yearling Heifers Grazing Winter Range, Trey Patterson, Don C. Adams, Terry J. Klopfenstein, Jacqueline A. Musgrave, Andy Applegarth
Supplementing Metabolizable Protein To Yearling Heifers Grazing Winter Range, Trey Patterson, Don C. Adams, Terry J. Klopfenstein, Jacqueline A. Musgrave, Andy Applegarth
Nebraska Beef Cattle Reports
Two experiments were conducted with pregnant yearling heifers grazing Sandhills winter range to evaluate response of supplementing to meet the metabolizable protein requirement of the heifers versus conventional supplementation based on crude protein. Supplements were fed from October to February (pre-calving) both years. Intake was measured in November, January and February of the first year. Supplementing to meet metabolizable protein requirement improved the heifers’ ability to maintain weight in year one, but not in year two. Heifer intakes ranged from 2.2% of BW in November to 1.5% in February. Feeding hay reduced body weight loss compared to no hay feeding …
Cleaning Coliform Bacteria From Feedlot Water Tanks, David R. Smith, Todd Milton, Rodney A. Moxley, Jeff Gray, Laura Hungerford, Doreen Bailey, Tony Scott, Terry J. Klopfenstein
Cleaning Coliform Bacteria From Feedlot Water Tanks, David R. Smith, Todd Milton, Rodney A. Moxley, Jeff Gray, Laura Hungerford, Doreen Bailey, Tony Scott, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Three methods of physically or chemically cleaning feedlot water tanks were tested for their ability to reduce amounts of coliform bacteria in the water and biofilm during the summer months. Draining and refilling or draining, scrubbing and refilling water tanks did not reduce coliform bacteria in water or biofilm. Coliform bacteria in water and biofilm were reduced 99% and 99.9%, respectively, after draining, scrubbing and 15 minutes of chemical disinfection with chlorine bleach and refilling. However, coliforms returned to pretreatment levels 24 to 48 hours after treatment if cattle continued to drink from the tanks.
Phase-Feeding Metabolizable Protein For Finishing Steers, Rob Cooper, Todd Milton, Terry J. Klopfenstein
Phase-Feeding Metabolizable Protein For Finishing Steers, Rob Cooper, Todd Milton, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A finishing trial was conducted to evaluate phase-feeding of metabolizable protein in order to match requirements. Treatments were: 1) one finishing diet which matched requirements at initial weight; 2) one finishing diet which matched requirements at mid-weight; and 3) six finishing diets fed in sequential order which matched requirements throughout the feeding period. The 1996 Beef NRC was used to determine metabolizable protein requirements. No performance differences were observed. Gains and efficiencies were lower than projected, likely due to mud, causing protein requirements to be over-predicted. Phase-feeding metabolizable protein maintained equal performance and reduced nitrogen excretion compared to treatment 1.