J. C. MacDonald
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View article: Effects of late-season dried distillers grains supplementation frequency on daily gain and economic return of yearling steers grazing crested wheatgrass
Effects of late-season dried distillers grains supplementation frequency on daily gain and economic return of yearling steers grazing crested wheatgrass Open
View article: 24 Effects of an accelerated adaptation protocol in conjunction with Lactipro on performance, carcass characteristics, and health of finishing steers.
24 Effects of an accelerated adaptation protocol in conjunction with Lactipro on performance, carcass characteristics, and health of finishing steers. Open
Lactipro (Axiota Animal Health; Fort Collins, CO) delivers an immediate, viable population of Megasphaera elsdenii directly to the rumen, thereby reducing the time needed for the animal to adapt to a high starch diet. Yearling steers [n = …
View article: 105 Inclusion of palm oil products in finishing diets on ground beef quality and retail stability.
105 Inclusion of palm oil products in finishing diets on ground beef quality and retail stability. Open
Rising costs and fluctuating availability of supplemental fats has led to increased interest in alternative fat sources, including palm oil products, for use in feedlot diets. The objectives of this experiment were to evaluate the impact o…
View article: PS-18 Impact of implant strategy and backgrounding rate of gain on yearling performance, feedlot performance, and carcass characteristics
PS-18 Impact of implant strategy and backgrounding rate of gain on yearling performance, feedlot performance, and carcass characteristics Open
In a 3-yr study, 179 yearling steers and spayed heifers (n = 146 steers and 33 heifers) were utilized to determine the impact of implant strategy and rate of gain during a wintering backgrounding phase on yearling growth performance, feedl…
View article: 116 Effect of feeding fenugreek extract and encapsulated lecithin on finishing cattle performance, carcass characteristics, and liver abscesses
116 Effect of feeding fenugreek extract and encapsulated lecithin on finishing cattle performance, carcass characteristics, and liver abscesses Open
A feedlot study was conducted to evaluate the effects of adding Fenugreek extract and encapsulated Lecithin (Furst-McNess Company, Rockford, IL) on finishing cattle performance, carcass characteristics, and liver abscesses. In this experim…
View article: 159 Impact of feeding wet or dry traditional or fractionated (Solbran®) distillers grains on feedlot cattle performance and enteric methane
159 Impact of feeding wet or dry traditional or fractionated (Solbran®) distillers grains on feedlot cattle performance and enteric methane Open
Solbran (ICM, Colwich, KS) is new corn byproduct of ethanol production composed of fiber plus condensed distillers solubles and can be fed dry (Dry Solbran; NDF= 41.1%; CP= 21.84%; Ether extract= 8.4%), or wet (Wet Solbran; NDF= 49.7%; CP=…
View article: 47 Effects of increasing concentrations of two different Sweet Bran products on total tract digestibility and rumen pH
47 Effects of increasing concentrations of two different Sweet Bran products on total tract digestibility and rumen pH Open
A study was conducted to evaluate two different Sweet Bran products included at 13%, 18%, and 23% of the diet on total tract digestibility and rumen fermentation parameters. Seven ruminally cannulated, crossbred heifers were used in a 6 x …
View article: PSV-4 Effect of using whole soybeans, roasted soybeans, or distillers grains in silage-based growing beef diets
PSV-4 Effect of using whole soybeans, roasted soybeans, or distillers grains in silage-based growing beef diets Open
An individual feeding experiment was conducted to evaluate the effect of using whole soybeans (WSB), roasted (RSB) soybeans or distillers grains (MDGS) at three inclusions (7%. 14%, or 21% of diet dry matter) on growing performance. Crossb…
View article: PSV-3 Effects of using whole or roasted soybeans in finishing cattle diets
PSV-3 Effects of using whole or roasted soybeans in finishing cattle diets Open
A feedlot study was conducted to evaluate the effects of using whole (WSB) or roasted (RSB) soybeans at two inclusion rates (12% and 16% of diet dry matter), soybean meal (SBM), distillers grains (WDGS), or a dry-rolled corn with 1% urea c…
View article: PSIII-7 Feeding effects of whole soybeans and roasted soybeans in feedlot steers
PSIII-7 Feeding effects of whole soybeans and roasted soybeans in feedlot steers Open
A feedlot study was conducted to evaluate the effect of using whole (WSB) or roasted (RSB) soybeans, soybean meal (SBM), distillers grains (WDGS), or dry-rolled corn (DRC) control (CON) in finishing cattle diets on performance and carcass …
View article: 158 Impact of constant versus variable inclusions of modified distillers grains plus solubles on feedlot cattle performance and carcass characteristics
158 Impact of constant versus variable inclusions of modified distillers grains plus solubles on feedlot cattle performance and carcass characteristics Open
Distillers grains have commonly been fed in feedlot diets, but as the price of distillers grains has increased relative to corn, inclusions have declined. Additionally, inconsistent availability of distillers grains has limited the amount …
View article: 119 Interaction of backgrounding system and implant use on growing calf performance
119 Interaction of backgrounding system and implant use on growing calf performance Open
A two-year study utilized 320 weaned steers (244 kg; SD = 19 kg) each year to determine the effects of winter rate of gain and implant strategy during the winter backgrounding and summer phases on steer performance, forage intake, and comp…
View article: Inclusion of dry or wet fiber plus solubles or high protein distillers grains to replace flint corn, whole cottonseed, and soybean meal in diets for finishing Nellore bulls
Inclusion of dry or wet fiber plus solubles or high protein distillers grains to replace flint corn, whole cottonseed, and soybean meal in diets for finishing Nellore bulls Open
The objective was to evaluate the inclusion of three corn ethanol byproducts in finishing cattle diets: high protein distillers grain (HPDG) was used as a source of protein in the diet to entirely replace whole cottonseed and soybean meal,…
View article: Effects of displacing modified distillers grains with dry-rolled corn in a totally mixed ration on performance of growing beef steers consuming cornstalk residue from different harvest methods
Effects of displacing modified distillers grains with dry-rolled corn in a totally mixed ration on performance of growing beef steers consuming cornstalk residue from different harvest methods Open
View article: Impact of Partial Oil Removal on Energy Content of Distillers Grains Plus Solubles for Finishing Cattle
Impact of Partial Oil Removal on Energy Content of Distillers Grains Plus Solubles for Finishing Cattle Open
Two experiments evaluated the impact of the reduction in the percentage of corn oil remaining in distillers grains plus solubles (DGS) after the ethanol plant de-oiling process or by adding corn oil back to DGS following de-oiling on finis…
View article: Effects of supplemental rumen-degradable protein, rumen undegradable protein, and energy on performance of growing beef steers grazing corn residue
Effects of supplemental rumen-degradable protein, rumen undegradable protein, and energy on performance of growing beef steers grazing corn residue Open
The objective of Exp. 1 was to evaluate the effects of adding urea to modified distillers grains with solubles (MDGS) when supplemented to growing steers and in Exp. 2 to evaluate whole corn as an alternative to dried distillers grains wit…
View article: 163 Impact of feeding wet or dry traditional or fractionated (Solbran) distiller’s grains on feedlot cattle performance and carcass characteristics
163 Impact of feeding wet or dry traditional or fractionated (Solbran) distiller’s grains on feedlot cattle performance and carcass characteristics Open
Solbran (ICM, Colwich, KS) is new corn byproduct of ethanol production composed of fiber plus condensed distiller’s solubles and can be fed dry (Dry Solbran; NDF = 41.1%; CP = 21.84%; Ether extract = 8.4%), or wet (Wet Solbran; NDF = 49.7%…
View article: 164 Impact of varying dietary inclusion of modified distiller’s grains plus solubles weekly compared with constant inclusion on feedlot cattle performance and carcass characteristics
164 Impact of varying dietary inclusion of modified distiller’s grains plus solubles weekly compared with constant inclusion on feedlot cattle performance and carcass characteristics Open
The use of distiller’s grains in feedlot diets was abundant due to supply and price, but the availability to feedlots and greater prices of distiller’s grains has led to reduced inclusion and more variation in supply, and thus, inclusion w…
View article: Effect of extended days on feed on carcass gain, efficiency, and quality of individually fed beef steers
Effect of extended days on feed on carcass gain, efficiency, and quality of individually fed beef steers Open
Crossbred steers (n = 114, initial BW = 334 kg; SEM = 5 kg) were serially harvested to evaluate the change in carcass composition by feeding cattle 21 or 42 d longer than the 2014 industry average subjective measure of finish, 1.27 cm of 1…
View article: Interaction of Sweet Bran inclusion and corn processing method in beef finishing diets
Interaction of Sweet Bran inclusion and corn processing method in beef finishing diets Open
The study objective was to determine the effects of corn processing method and Sweet Bran (Cargill, Blair, NE) inclusion in beef finishing diets on performance and carcass characteristics. Four hundred and eighty crossbred yearling steers …
View article: 167 Timing of Implants use in a Backgrounding System
167 Timing of Implants use in a Backgrounding System Open
A 2-year study conducted at the Eastern Nebraska Research and Extension Center near Mead, Nebraska determined the effects of backgrounding rate of gain and implanting during the winter or summer phases on animal performance and carcass tra…
View article: 157 Daily Versus Three Times a Week Ddgs Supplementation on Grazing Calves
157 Daily Versus Three Times a Week Ddgs Supplementation on Grazing Calves Open
Supplemental feed may be provided to cattle in grazing systems to increase ADG, but can be labor intensive. This study evaluated the performance of steers grazing smooth bromegrass pastures supplemented dried distillers grains plus soluble…
View article: 309 Evaluation of Encapsulated <i>Megasphaera Elsdenii Ncimb 41125</i> in an Accelerated Beef Step-up Program and an Acidosis Challenge Model
309 Evaluation of Encapsulated <i>Megasphaera Elsdenii Ncimb 41125</i> in an Accelerated Beef Step-up Program and an Acidosis Challenge Model Open
A metabolism experiment was conducted to evaluate the effects of daily feeding of encapsulated Megasphaera elsdenii (M. elsdenii) NCIMB 41125 along with a one-time dose of Lactipro NXT (MS Biotec) on dry matter intake (DMI), rumen pH, in v…
View article: 159 Impact of Constant Inclusion or Decreasing Inclusion of Distillers Grains with High-Quality or low-Quality Roughage on Finishing Cattle Performance
159 Impact of Constant Inclusion or Decreasing Inclusion of Distillers Grains with High-Quality or low-Quality Roughage on Finishing Cattle Performance Open
Crossbred, calf-fed steers (n = 480; initial body weight = 292 ± 19 kg) were used in a randomized block design finishing experiment with a 2 × 3 arrangement of treatments to evaluate the impact of constant inclusion or decreasing inclusion…
View article: Impact of cattle grazing corn residue in spring on soil and subsequent soybean yield
Impact of cattle grazing corn residue in spring on soil and subsequent soybean yield Open
The effects of spring corn ( Zea mays ) residue grazing and stocking density on soil physical properties and subsequent soybean ( Glycine max ) yield were evaluated in an experiment with three treatments: no grazing (NG), normal stocking d…
View article: Effect of increasing corn silage inclusion in finishing diets cattle with or without tylosin on performance and liver abscesses
Effect of increasing corn silage inclusion in finishing diets cattle with or without tylosin on performance and liver abscesses Open
A pooled analysis was performed to evaluate whether corn silage fed at 15% or 45% of diet DM impacted liver abscesses prevalence at slaughter in five previous experiments. Cattle fed 15% corn silage had 7.8% abscessed livers compared to 4.…
View article: Evaluation of growth performance, carcass characteristics, and methane and CO2 emissions of growing and finishing cattle raised in extensive or partial-intensive cow-calf production systems
Evaluation of growth performance, carcass characteristics, and methane and CO2 emissions of growing and finishing cattle raised in extensive or partial-intensive cow-calf production systems Open
An experiment was conducted over 2 yr to measure performance and greenhouse gas (GHG) emissions of weaned calves from two cow-calf production systems. Crossbred steers and heifers (n = 270, initial body weight (BW) = 207 kg, SD = 35) were …
View article: Mineral composition of serially slaughtered Holstein steers supplemented with zilpaterol hydrochloride
Mineral composition of serially slaughtered Holstein steers supplemented with zilpaterol hydrochloride Open
Calf-fed Holstein steers (n = 115; 449 ± 20 kg) were utilized in a serial harvest experiment. A baseline group of five steers was harvested after 226 d on feed (DOF), which was designated day 0. The remaining cattle were assigned randomly …
View article: Impact of shade in beef feedyards on performance, ear temperature, and heat stress measures
Impact of shade in beef feedyards on performance, ear temperature, and heat stress measures Open
A 2-yr study (year 1: March to September 2017; year 2: February to August 2018) was conducted using crossbred steers (year 1: n = 1677; initial body weight [BW] = 372 kg, SD = 47; year 2: n = 1713; initial BW = 379 kg, SD = 10) in a commer…
View article: Vegetation dynamics in nitrogen‐fertilized versus mixed legume‐smooth bromegrass pastures interseeded with sorghum‐sudangrass
Vegetation dynamics in nitrogen‐fertilized versus mixed legume‐smooth bromegrass pastures interseeded with sorghum‐sudangrass Open
Interseeding annual warm‐season grasses may increase forage and pasture productivity. From 2017 to 2019, we conducted a grazing experiment that examined smooth bromegrass ( Bromus inermis Leyss.) pasture responses to interseeding sorghum‐s…