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Full-Text Articles in Life Sciences
Effect Of Lighter (273 Kg) And Heavier (356 Kg) Initial Weight On Growth Performance Of Single-Source, Pre-Conditioned Beef Steers Fed A Single Growing-Finishing Diet, Thomas C. Norman
Electronic Theses and Dissertations
The objective of the study was to determine the influence that initial BW has on growth performance responses, efficiency of dietary net energy (NE) utilization, and carcass traits in feedlot steers. Light- and heavy-weight Charolais×Red Angus steers (n = 70) selected from a larger single-source group were used in a 209-d growing-finishing feedlot experiment at the Ruminant Nutrition Center, in Brookings, SD. On d-0 and d-1 weight and hip height (HH) measurements were collected for allotment purposes; the initial experimental weight was the average between d 0 and d 1 BW. Steers were assigned to two groups based on initial …
Optimization Of Forage Use In Diets Fed To Backgrounding And Finishing Cattle In The Northern Great Plains, Thomas G. Hamilton
Optimization Of Forage Use In Diets Fed To Backgrounding And Finishing Cattle In The Northern Great Plains, Thomas G. Hamilton
Electronic Theses and Dissertations
The two studies in this thesis were conducted to: 1) investigate the impact of corn silage moisture content and kernel processing at harvest on growth performance, efficiency of dietary net energy utilization, and carcass traits in finishing steers when fed at 20% DM inclusion in diets containing modified distillers grains plus solubles; and 2) determine the influence of equal cumulative roughage inclusion in a single diet or twodiet system during a 210-d backgrounding-finishing period in pre-conditioned beef steers on growth performance responses, efficiency of dietary net energy (NE) utilization, and carcass traits. Experiment 1 was a 112-d finishing experiment conducted …
Management And Dietary Strategies To Mitigate Environmental Stressors In Northern Plains Cattle Feeding Systems, Warren Carl Rusche
Management And Dietary Strategies To Mitigate Environmental Stressors In Northern Plains Cattle Feeding Systems, Warren Carl Rusche
Electronic Theses and Dissertations
Three studies were undertaken to examine strategies to mitigate environmental stress faced by Northern Plains cattle feeders. In the first study, 46 feedlot managers from SD (n = 21), MN (n = 6), and NE (n = 19) were surveyed on use and perceptions of heat stress (HS) mitigation strategies. All respondents avoided cattle handling during heat stress events and incorporated some method of HS mitigation. Buildings or shades were perceived as the most successful strategy (60.9%) and were most commonly named as strategies managers would like to employ (63% for shades and 17.4% for buildings). Increasing dietary corn silage …
Effect Of Inclusion Rate Of Silage With Or Without The Presence Of Alpha-Amylase On Feedlot Performance, Carcass Characteristics, And Efficiency Measures, W. C. Rusche, J. A. Walker, Z. K. Smith
Effect Of Inclusion Rate Of Silage With Or Without The Presence Of Alpha-Amylase On Feedlot Performance, Carcass Characteristics, And Efficiency Measures, W. C. Rusche, J. A. Walker, Z. K. Smith
SDSU Beef Day 2020 Summary Publication
The experimental objective was to determine the interactions of silage variety and inclusion level in cattle finishing diets on cattle performance and agronomic returns to cropland when fed to beef cattle.
Effects Of Diets Containing Soybean Hulls Or Rolled Corn On The Performance And Mineral Status Of Newly Received Calves, Howard M. Blalock, Robbi H. Pritchard, William Epperson
Effects Of Diets Containing Soybean Hulls Or Rolled Corn On The Performance And Mineral Status Of Newly Received Calves, Howard M. Blalock, Robbi H. Pritchard, William Epperson
South Dakota Beef Report, 2003
The objective of this study was to determine the effectiveness of soybean hulls as an energy source for newly received feeder calves and their effects on ADG, DMI, gain/feed (G/F), morbidity rate and mineral status. Steers from a single source were blocked into previously weaned (PW; n = 63; BW = 265 ± 2.9 kg) and non-weaned (NW; n = 92; BW = 264 ± 2.4 kg) groups, then allotted to one of two dietary treatment groups. Diets consisted of either rolled corn (CRN) or soybean hulls (SBH), and oat silage and vitamin/mineral supplements. Liver biopsies and blood samples were …
The Effects Of Trace Mineral Inclusion Management On The Performance And Mineral Status Of Newly Recwived Feeder Calves, Howard M. Blalock, Robbi H. Pritchard, William Epperson
The Effects Of Trace Mineral Inclusion Management On The Performance And Mineral Status Of Newly Recwived Feeder Calves, Howard M. Blalock, Robbi H. Pritchard, William Epperson
South Dakota Beef Report, 2003
The objective of this study was to determine the effects of trace mineral inclusion management on the performance and mineral status of newly received feeder calves. Steers from 2 pastures at a single ranch in Western South Dakota blocked into non-implanted (NI; n = 64; BW = 240 kg), May implanted (MI; n = 64; BW 252 kg;) and August implanted (AI; n = 66; BW = 248 kg;) groups, then allotted to one of two treatment groups. Treatments consisted of either: a pelleted supplement fed at a fixed amount to meet the gram / daily requirement (GDR) of Cu …
Relative Feed Values For High Fiber Corn And Conventional Corn Silage For Growing Steers, C. J. Mueller, R. H. Pritchard, Z. W. Wicks Iii
Relative Feed Values For High Fiber Corn And Conventional Corn Silage For Growing Steers, C. J. Mueller, R. H. Pritchard, Z. W. Wicks Iii
South Dakota Beef Report, 2000
The relative feed value of a corn variety developed for the primary purpose of corn silage production was evaluated using a 70-d steer growing trial. The high fiber corn (CSV1) and conventional corn (CSV2) varieties were planted in adjacent plots and harvested at approximately 30% DM. Silage varieties were stored in separate bunker silos and allowed to ferment for 52 d. CSVl yielded 5.4 T/acre while CSV2 yielded 4.7 T/acre (DM basis). Variety affected (P<.001) NDF (43.3% vs 38.6%), ADF (24.1% vs 20.2%), lignin (5.7% vs 4.6%), starch (18.69% vs 30.18%) and CP content (7.37% vs 6.89%) of CSVl and CSV2, respectively. IVDMD was not, different (P>. 10) between varieties. One hundred sixty steers were divided into light (516 ± 7.1 Ib.) and heavy (595 ± 9.7 Ib.) BW groups. Steers …
Influence Of Dietary Mp On The Production Rates And N Usage By Steers Fed High Grain Content Diets, R. H. Pritchard, K. W. Bruns, S. J. Bierman
Influence Of Dietary Mp On The Production Rates And N Usage By Steers Fed High Grain Content Diets, R. H. Pritchard, K. W. Bruns, S. J. Bierman
South Dakota Beef Report, 2000
An experiment was conducted to determine if dietary metabolizable protein (MP) could be manipulated to reduce N content of feedlot effluent without compromising production rates in yearling steers fed high grain content diets. Three feeding programs included: LO) 11 % CP fed throughout; HI) 13% CP fed throughout; and LHL) 11 % fed from d 1 to 35, 13% CP (HI) fed d 36 to 94 and 1 1 % CP (LO) fed from d 95 to 1 17. An estradiol-trenbalone acetate implant was administered on d 35. There were 5 pens of 8 steers (BW=7561b) assigned to each treatment. …
Effect Of Feed Delivery Management On Yearling Steer Performance, S. J. Bierman, R. H. Pritchard
Effect Of Feed Delivery Management On Yearling Steer Performance, S. J. Bierman, R. H. Pritchard
South Dakota Beef Report, 1996
Gain efficiency by cattle fed high grain diets can be affected by feed delivery management (FDM). Restricted or limit feeding improves feed efficiency but can reduce ADG. This experiment was designed to evaluate if feeding near ad libitum intake while reducing the amount of variation between daily feed deliveries could provide feed efficiency advantages over unrestricted access to feed without restricting ADG. The FDM strategies for the 121-day feeding period included prescription intakes (PI) where variability between day to day feed deliveries were minimized or ad libitum intake (ALI) where feed was always available. Crossbred yearling steers (n = 76, …
Inophore Programs For Finishing Yearling Steers, R. H. Pritchard
Inophore Programs For Finishing Yearling Steers, R. H. Pritchard
South Dakota Beef Report, 1996
The relative effectiveness of three ionophore feeding strategies was compared in yearling steers. Six pens of 8 steers were assigned to each of the following treatments: A) no ionophore fed, B) lasalocid (33 glT) fed for 28 days and then replaced with laidlomycin propionate (1 1 g/T) for the balance of time on feed; C) monensin (28 g/T) fed throughout, and D) laidlomycin propionate (11 g/T) fed throughout. A five diet step-up program was used that culminated in a final diet based on cracked and high moisture corn and 7% ground hay. lonophores increased (P< .05) ADG (3.9%) and carcass weight and lowered (P<.05) feed/gain 4.5% during the 135-day feeding period. Among ionophore treatments, monensin resulted in a lower (P< .05) cumulative ADG and carcass weight than diets containing laidlomycin propionate. Three of the four steers removed from the trial due to metabolic disorders were from the no ionophore treatment.
Evaluation Of Crude Protein Sources And Levels For High Growth Potential Yearling Steers Fed High Energy Diets, R. H. Pritchard
Evaluation Of Crude Protein Sources And Levels For High Growth Potential Yearling Steers Fed High Energy Diets, R. H. Pritchard
South Dakota Beef Report, 1995
Feedlot cattle are now capable of growth rates that greatly exceed our descriptions for established nutrient requirements. We must now redefined the impact of sources and levels of dietary CP on growth rate and efficiency. Pursuing this question, yearling steers (n = 360 x BW = 790 ± 10) were fed various levels and sources of supplement crude protein during a 120 day finishing period. Diets were formulated to contain 12 or 13% CP. Supplemental CP was provided in the forms of urea, soybean meal, bloodmeal, and feather meal. Actual dietary CP levels of 1 1.8% and 12.6% were lower …
Effect Of Implant Strategies On Feedlot Performance And Carcass Traits Of Steers, R. H. Pritchard
Effect Of Implant Strategies On Feedlot Performance And Carcass Traits Of Steers, R. H. Pritchard
South Dakota Beef Report, 1994
The role of implant selection on feedlot performance and carcass traits was evaluated in 200 yearling steers. The steers (initial body weight 709 Ib) were implanted on day 1 or day 70 of the 140-day experiment. Implant combinations (day 1 /day 70) included none/none, Synovex-S + Finaplix-S/Synovex-S + Finaplix-S, Ralgro (36 mg)/Revalor, Synovex-S/Revalor, and Ralgro (72 mg)/Revalor. Day 1 implants increased (P < .05) average daily gain and reduced feed/gain through 70 days on feed. During the 71- to 140-day period implanted cattle exhibited higher (P<.05) average daily gain and lower (P<.05) feed/gain than nonimplanted steers. Specific implant combinations were all of comparable value. Implants increased (P< .05) carcass weights by 55 Ib over nonimplanted steers and increased (P< .05) rib eye area 1 in'. Rib fat thickness and rib eye area/cwt carcass were not affected by implanting. The percentage of choice grade carcasses was reduced (P<.05) from 82.5% to 62.3% by implanting. There were no appreciable differences in carcass traits attributable to specific implant combinations.
Effect Of Morning, Evening Or Twice Daily Feeding On Yearling Steer Performance, J. S. Knutsen, J. J. Vetos, R. H. Pritchard
Effect Of Morning, Evening Or Twice Daily Feeding On Yearling Steer Performance, J. S. Knutsen, J. J. Vetos, R. H. Pritchard
South Dakota Beef Report, 1994
The impact of morning (0730), evening (1 600), and twice daily (0730/1600) feeding on feedlot performance was evaluated in yearling steers fed high grain diets. Exp. 1 was conducted from July 20 to October 12, 1993. The 92% concentrate diets were based on dry whole shelled corn. There were four pen replicates per treatment. Exp. 2 was conducted from January 6 to May 10, 1994. The 93% concentrate diets were based on a 50/50 blend of dry whole shelled corn and high moisture corn. There were six pen replicates per treatment. In Exp. 1 evening feeding increased (P<.06) average daily gain and improved (P< .06) feed/gain over morning feeding. The most pronounced effects were during the initial 28 days of the 84-day experiment. Performance of steers fed twice daily was intermediate to evening and morning treatments. Twice daily feeding improved performance over morning feeding (average daily gain, P<.10; feed/gain P<.01). Most of this response occurred during the final 28 days of the experiment. During Exp. 2 there were treatment effects on interim period performance but no responses (P>.10) occurred …
Effect Of Supplement Crude Protein Source And Dietary Crude Protein Levels On Feedlot Performance Of Yearling Steers, R. H. Pritchard
Effect Of Supplement Crude Protein Source And Dietary Crude Protein Levels On Feedlot Performance Of Yearling Steers, R. H. Pritchard
South Dakota Beef Report, 1994
The effect of crude protein level and source on production rates of yearling steers was evaluated during an 88-day finishing period. The overall average daily gain of 240 steers implanted with Revalor was 4.35 Ib. Diets were formulated to contain 1 1.25 and 13.5% crude protein. Protein sources included urea, soybean meal, an isonitrogenous blend of blood mealcorn gluten meal (BM-CGM) and dried distillers grains with solubles (DDGS). Increasing dietary crude protein from 11.5 to 13.3% with all urea supplements depressed (P<.05) dry matter intake without compromising average daily gain or feed efficiency. Feeding soybean meal in 1 1 .I % crude protein diets improved the energetic efficiency of steers. The BM-CGM supplement depressed (P<.051 dry matter intake and average daily gain when compared to the 11.5% crude protein soybean meal diet. The 13.6% crude protein diet containing 11 % DDGS and urea supported performance comparable to the 11.1 % soybean meal diet at a lower cost.
Feedlot Performance And Carcass Traits Of Cull Cows Fed For Slaughter, R. H. Pritchard, P. T. Burg
Feedlot Performance And Carcass Traits Of Cull Cows Fed For Slaughter, R. H. Pritchard, P. T. Burg
South Dakota Beef Report, 1993
This trial was designed to evaluate how various factors impact the value added process of feeding cull cows. Specific management criteria evaluated included initial body condition, days on feed, implants, and cow age. Feedlot performance and carcass trait changes due to these factors were compared. Prolonging the feeding period from 50 to 77 or 105 days tended (P=.10) to increase average daily gain and dry matter intake (P<.01) and had no (P>.15) effect on feed/gain. This response is similar to short term adaptation and feeding of young cattle. Added days on feed increased (P<.001) dressing percentage, ribeye area, and ribfat thickness while decreasing (P<.001) lean age. Days on feed did not improve fat color. Older cows gained slower (P<.001) and were lighter muscled than young cows. Longer feeding periods progressively increased the number of high quality carcasses produced.
Role Of Supplement Form For Finishing Yearling Steers, R. H. Pritchard
Role Of Supplement Form For Finishing Yearling Steers, R. H. Pritchard
South Dakota Beef Report, 1993
The impact of liquid, meal, and pelleted supplements on feedlot performance and liver abscesses was evaluated in yearling steers. Steers were fed 90% concentrate diets and test supplement sources for 105 days. The control diet included all supplemental feed ingredients in pelleted form. Four other diets included a liquid supplement that contained supplemental vitamins, minerals, and monensin and a dry supplement providing protein and tylosin all equal to the control. The protein-tylosin component was fed in meal or pelleted form. Overall, steers fed liquid supplements outperformed steers fed dry pelleted supplements with higher average daily gain (P=.05) and dry matter …
Comparison Of Production Efficiencies When Calves Are Fed In South Dakota Or Texas, R. H. Pritchard, R. L. Preston
Comparison Of Production Efficiencies When Calves Are Fed In South Dakota Or Texas, R. H. Pritchard, R. L. Preston
South Dakota Beef Report, 1992
South Dakota's reputation for harsh winters is frequently cited as a limitation to our competitiveness in cattle feeding. To help quantify the impact of climate on cattle feeding, heifers produced in western South Dakota were fed in eastern South Dakota or in the Texas panhandle. Heifer calves were obtained from two ranches, assembled at SDSU, and sorted into three similar groups. Group 1 remained at the SDSU feedlot, Group 2 was shipped half-way to Texas and returned to SDSU, and Group 3 was sent on to Texas for feeding. These groups allow consideration of climate and transit stress on feedlot …
Implant Combinations And Reimplanting Strategies For Yearling Steers Fed High Concentrate Diets, R. H. Pritchard, M. A. Robbins, D. H. Gee
Implant Combinations And Reimplanting Strategies For Yearling Steers Fed High Concentrate Diets, R. H. Pritchard, M. A. Robbins, D. H. Gee
South Dakota Beef Report, 1992
Crossbred yearling steers were used to determine the relative efficacy of specific anabolic implant combinations and sequences on feedlot performance and carcass traits. Steers were fed a high concentrate finishing diet for 112 days. lmplanting was done on days 1 and 42 of the feeding period. lmplanting improved (P < .05) average daily gain (ADG) 22% and feed efficiency 15%. Implant treatment generally increased dry matter intake. Lmplanting increased (P<.05) the rib eye area of carcasses 6.5% and tended to cause a reduction in percentage choice carcasses. The percentage of abscessed implants ranged from < 1 % to 10%, depending on the type of implant used even though implant needles were disinfected between each use.
Implant Strategies For Yearling Steers, R. H. Pritchard, M. A. Robbins
Implant Strategies For Yearling Steers, R. H. Pritchard, M. A. Robbins
South Dakota Beef Report, 1991
Various implant strategies were compared in heavy yearling steers fed for 98 days. Implant treatments included control (nonimplanted), 722 (72 mg zeranol), 36TBA (36 mg zeranol plus 140 mg trenbolone acetate [TBA]), 72TBA (72 mg zeranol plus TBA) and ETBA (20 mg estradiol-200 mg progesterone plus TBA). The 72-mg zeranol dosage represents two implants in one site. Combinations of implants were administered, one in each ear. Implanting increased (P<.05) ADG and DM1 and decreased (P<.05) feed/gain values. Among implanted steers, no differences (P>.10) in ADG or DM1 were observed. Feed/gain was lower (P< .05) for zeranol-TBA combinations than the 72-mg zeranol treatment. Carcasses were heavier and rib eye area was greater (P<.05) in the 72TBA than 36TBA treatment. Kidney-pelvic-heart fat was lower (P<.05) when the ETBA combination was used.
Effects Of Energy Restriction And Realimentation On The Development Of Carcass Traits Of Yearling Heifers, C. L. Anderson, R. H. Pritchard, D. L. Boggs
Effects Of Energy Restriction And Realimentation On The Development Of Carcass Traits Of Yearling Heifers, C. L. Anderson, R. H. Pritchard, D. L. Boggs
South Dakota Beef Report, 1991
Feedlot performance and carcass development were compared between heifers fed a low energy diet for an 88-day backgrounding period before receiving a high energy diet (LE) and heifers receiving a high energy diet throughout the trial (HE). The LE heifers were delayed in carcass and muscle growth (P<.10) when compared to HE heifers on day 89. At an 1100 1b weight constant, LE and HE carcasses had similar dissected muscle weights, rib fat measurements and marbling scores. Carcass dressing percentage was only affected by time (P<.10) on an energy dense diet at 1030 Ib. During the initial 88-day background period, HE heifers had higher ADG (P<.001) and lower Feed/gain requirements (P<.001). During realimentation, compensatory growth was exhibited through increased ADG (P< .lo) and improved feed/gain (P<.05) for LE heifers. From day 0 until slaughter, the cumulative ADG for HE heifers was greater (P<.05) and the cumulative feed conversion was lower for HE heifers (P<.10).
Effects Of Estradiol-Trenbalone Acetate Implant Combinations On Feedlot Performance And Carcass Traits Of Two Steer Types, R.H. Pritchard, D.H. Gee, M.A. Robbins
Effects Of Estradiol-Trenbalone Acetate Implant Combinations On Feedlot Performance And Carcass Traits Of Two Steer Types, R.H. Pritchard, D.H. Gee, M.A. Robbins
South Dakota Beef Report, 1990
Hereford x Angus (HA) and predominantly Gelbvieh cross (Gx) steer calves either received no implant (control) or were implanted initially and again at 77 days on feed with a combination of estradiol and trenbalone acetate based implants. Calves were started on feed in December weighing 677 Ib and fed for 146 to 167 days. Fed for a common period of time, implanting steers increased (Pc.05) ADG, dry matter intake, final weight, carcass weight, rib fat thickness and yield grade. Implanting reduced (Pc.01) marbling scores. Gx steers were heavier and grew more rapidly than HA steers. There were no interactions between …
Combinations Of Synovex And Finaplex For Yearling Steers, J.J. Wagner, R.H. Pritchard, J.U. Thomson, M.J. Goetz
Combinations Of Synovex And Finaplex For Yearling Steers, J.J. Wagner, R.H. Pritchard, J.U. Thomson, M.J. Goetz
South Dakota Beef Report, 1990
One hundred twenty-three yearling black baldy steers were fed in one pen for 123 days at a commercial feedlot near Kimball, South Dakota. On day 1 in the feedlot, 53 steers were implanted with Synovex-S, 53 steers were implanted with the combination of Synovex-S and Finaplix-S and 17 steers received no implant. On day 60 in the feedlot, 18 of the Synovex-S steers and 18 of the combination steers were reimplanted using Synovex-S. Also on day 60, 18 of the Synovex-S steers and 18 of the combination steers were reimplanted using the combination of Synovex-S and Finaplix-S. The remaining steers …
Whole Plant Faba Bean Siage As A Component Of Growing Steer Diets, J.J. Wagner, H. Nantoume, R. Hanson, D.R. Sorenson
Whole Plant Faba Bean Siage As A Component Of Growing Steer Diets, J.J. Wagner, H. Nantoume, R. Hanson, D.R. Sorenson
South Dakota Beef Report, 1990
Whole plant faba bean silage was compared to corn-alfalfa silage as a roughage source in 30% roughage growing steer diets. When the proportion of faba bean silage was increased from 0 to 10, 20 and 30%, respectively, daily feed intake, average daily gain and feed conversion of the steers were 18.32, 18.38, 18.23, 19.13 Ib per head; 3.66, 3.42, 3.39, 3.57 Ib per head; and 5.01, 5.38, 5.37 and 5.36, respectively. Substitution of faba bean silage for corn-alfalfa silage in a 30% forage diet had no significant (Pc.05) effect on feed intake, weight gain and feed efficiency for growing steers.
Feeding Practices In South Dakota Cattle Feedlots, D C. Taylor, J. J. Wagner, R. D. Kappes
Feeding Practices In South Dakota Cattle Feedlots, D C. Taylor, J. J. Wagner, R. D. Kappes
South Dakota Beef Report, 1989
During March 1989, a mail survey of South Dakota cattle feedlot managers was undertaken. The purposes of the survey were to characterize the nature of the cattle feeding industry in South Dakota and to determine the relationships between (i) each of size-of-feedlot and geographic location within the state and (ii) management practices followed by cattle feeders. Direct relationships exist between size-of-feedlot and the following: (1) rate of feedlot utilization in each quarter of the year (P<.10); (2) percentage grain relative to roughage in both growing and finishing diets (P<.10); (3) percentage of feedlots feeding high moisture grain, cracked grain, and ground hay (P<.01); (4) percentage of feedlots using rumen stimulants and growth implants (P<.01); and (5) percentages of managers testing feeds for nutrient composition, using feed scales to control feeding rates, maintaining feed records for separate pens of cattle, and hiring consultants to formulate rations (P<.01). On the other hand, inverse relationships exist between size-of-feedlot and the following: (6) days on feed for heifer calves, yearling steers, and yearling heifers (P<.10); (7) slaughter weight of steers (Pc.10); (8) percentage of home-raised hay and dry grain (P<.10); (9) percentage of feedlots feeding ground grain and unprocessed hay (P<.01); and (10) percentage of feedlots not using feed additives (P<.10). Average days on feed for steer and heifer calves are lower (P<.05) in the West than in other areas of the state. More milo is fed in the West; more barley is fed in the North Central region; and less home-raised corn silage and haylage are fed in the West than in other regions (P<.05).
Effect Of Deccox¹ And Aureomycin² On Performance Of Feedlot Steers During The Receiving Period, J.J. Wagner, R. Hanson
Effect Of Deccox¹ And Aureomycin² On Performance Of Feedlot Steers During The Receiving Period, J.J. Wagner, R. Hanson
South Dakota Beef Report, 1989
One-hundred thirty Angus steer calves (492 Ib) were utilized in a study to determine the effect of feeding Deccox, Aureomycin or a combination of Deccox and Aureomycin on feedlot performance during the feedlot receiving period (29 days). All cattle were fed diets consisting of 50% concentrate on a dry matter basis. No clinical symptoms of respiratory illness or= coccidiosis were observed for any of the cattle in this study. There were no significant differences in average daily dry matter intake due to medication treatment. Feeding Deccox improved (P = .0161) average daily gain about 10.9%. Feeding Aureomycin tended to improve …
Effects Of Restricting Intake On Carcass Traits Of Young Steers, R. H. Pritchard, D. H. Gee, M. R. Robbins
Effects Of Restricting Intake On Carcass Traits Of Young Steers, R. H. Pritchard, D. H. Gee, M. R. Robbins
South Dakota Beef Report, 1989
Feedlot performance and carcass characteristics were compared when steer calves were fed energy dense diets ad libitum (AL) or restricted (RI) to achieve constant growth rates. AL steers grew more rapidly (P.e.10) than RI steers, 2.93 vs 2.74 Ib per head per day. For the period from 98 days to slaughter (AL = 89 days, RI = 99 days), AL steers consumed more dry matter daily than Rl steers. Restricting intake did not affect feed conversions or total dry matter consumed while in the feedlot. Steers were slaughtered at similar final weights. Intake level did not affect carcass weight, rib …
Moderate Versus High Protein Diets For Finishing Yearling Steers, J.J. Wagner, R. Hansen
Moderate Versus High Protein Diets For Finishing Yearling Steers, J.J. Wagner, R. Hansen
South Dakota Beef Report, 1989
Sixty-four yearling crossbred steers (864 Ib) were utilized to study moderate versus high protein finishing diets. Diets were formulated to contain 11.25 or 12.25% crude protein on a dry matter basis. Differences observed for all performance and carcass traits were not significant. Steers on the 11.25 and 12.25% crude protein diets consumed 22.29 and 22.26 Ib dry matter per head daily, gained 2.83 and 2.90 Ib per head daily and required 7.91 and 7.69 Ib dry matter per pound of gain, respectively. Diets formulated to contain 11.25% crude protein appear adequate for finishing heavy yearlings.
Economic Analysis Of Using Mixing Equipment For Growing Heifers, J.J. Wagner, D. Peterson, R. Hanson, H.L. Miller
Economic Analysis Of Using Mixing Equipment For Growing Heifers, J.J. Wagner, D. Peterson, R. Hanson, H.L. Miller
South Dakota Beef Report, 1988
Seventy-two Simmental cross and Charolais cross heifers (475 lb.) were utilized in a growing study to estimate the economic value of using a mixer wagon and feed scale to feed light cattle a high roughage diet. Cattle fed the mixed diet gained an additional 22.6 lb. on 61.2 lb. less dry matter over the 133-day trial than did cattle fed the unmixed diet. Annual ownership and repair costs were assumed to equal $2356. If yearling feeder cattle sold for $8O/cwt and if corn, hay and corn silage were worth $90, $80 and $25 per ton, respectively, it would take a …
Effect Of Early Weaning On Feedlot Performance And Carcass Characteristics Of High Growth Potential Feeder Calves, R.H. Pritchard, M.A. Robbins, D.H Gee, R.J. Pruitt
Effect Of Early Weaning On Feedlot Performance And Carcass Characteristics Of High Growth Potential Feeder Calves, R.H. Pritchard, M.A. Robbins, D.H Gee, R.J. Pruitt
South Dakota Beef Report, 1988
Steer and heifer calves produced at Ft. Meade were used to evaluate early weaning and accelerated feeding as a management tool when retaining ownership of calves. Calves were weaned at 5 1/2 (EM) or 7 mo (NW) of age and started immediately on a 60% grain feeding program. Slaughter dates represented mean calf ages of 385 or 425 days and days on feed ranged from 179 to 257 days. Range conditions were good and early weaning had little effect on calf weight at any point in the feeding period. Feeding high grain diets to EW calves did not have any …
Effect Of Different Growth Patterns On Feedlot Performance And Carcass Traits Of Moderately Large Framed Feeder Calves, R.H. Pritchard, D.H. Gee, M.A. Robbins
Effect Of Different Growth Patterns On Feedlot Performance And Carcass Traits Of Moderately Large Framed Feeder Calves, R.H. Pritchard, D.H. Gee, M.A. Robbins
South Dakota Beef Report, 1988
Dry matter intake of Charolais and Limousin sired crossbred steers was restricted to allow three distinctly different postweaning growth patterns. Growth patterns represented were LL--allow 2.8 lb ADG throughout the feeding period; LH -- same as LL until 80% of slaughter weight, then allow ad Libitum DMI; or HH--ad Libitum feed intake throughout. Ad Libitum fed steers consumed 23% more dry matter (P<.001) had higher ADG (3.81 vs 3.09 Lb/head/day; P<.01) than steers on restricted feed intake up t o 80% of slaughter weight. Feed efficiency was similar regardless of feeding rate in the early growth curve. Steers switched from restricted to ad Libitum feed intake exhibited compensatory gains (P<.01), while DM1 did not differ from steers previously fed ad Libitum. While feeding program affected cumulative feedlot ADG and DMI (P<.05) and days on feed, feed efficiency and total dry matter consumed were not affected. LL feeding resulted in lower marbling scores and a lower percentage choice grade in carcasses of similar weights. Growth pattern had no effect on carcass composition estimated from 9-10-11 rib section when adjusted to a common carcass weight.