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Articles 1051 - 1080 of 1392

Full-Text Articles in Animal Sciences

Economic Analysis Of Using Mixing Equipment For Growing Heifers, J.J. Wagner, D. Peterson, R. Hanson, H.L. Miller Jan 1988

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 …

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Relationships Between Body Condition Scores And Live Animal Measurements Of Beef Cows, P.A. Momont, R.J. Pruitt Jan 1988

Relationships Between Body Condition Scores And Live Animal Measurements Of Beef Cows, P.A. Momont, R.J. Pruitt

South Dakota Beef Report, 1988

Records from 133 mature Simmental x Angus cows collected over a 3-year period were used to determine the relationships between body condition scores and other measurements of cow body condition. Positive correlations were found between condition scores and backfat, weight/height ratios and cow weight. Correcting weight/height ratios of pregnant cows for weight of the conceptus did not improve the correlations with condition score. Backfat measurements had limited use in describing body condition, since backfat wasnear zero for cows less than condition score 5. Equations using condition scores accurately predicted weight/height ratios.

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Effects Of Cow Body Condition And Calving Date On Calf Performance, P.A. Momont, R.J. Pruitt Jan 1988

Effects Of Cow Body Condition And Calving Date On Calf Performance, P.A. Momont, R.J. Pruitt

South Dakota Beef Report, 1988

Records from 285 Charolais-sired calves out of 133 Simmental x Angus crossbred cows taken over 3 years were used to evaluate the influence of cow body condition at calving, condition score change following calving and calf birth date on calf performance. Calves nursing cows with higher condition scores in March had increased daily gains from birth until May. However, at weaning time average daily gain and weaning weights were similar regardless of cow condition at calving. Cows which maintained body condition or lost less than two condition scores from March to May weaned heavier calves than cows which lost two …

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Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont Jan 1988

Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont

South Dakota Beef Report, 1988

Mature Simnnental x Angus crossbred cows were fed differing Levels of nutrition from December to May in each of 3 years to create a wide range in cow body condition or fleshiness at the beginning of the calving season (beginning mid-March) and when turned to summer pasture (early May)1 month prior to the beginning of a 60-day breeding season ( early June). Cows that were fleshier in March, May or June cycled earlier and conceived earlier. Being thin in May or June had a more detrimental effect on pregnancy rate for cows that calved late in the calving season. A …

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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 Jan 1988

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 …

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Observations Concerning The Effects Of Ruminal Evacuation On Intake And Ruminal Recovery Of Dry Matter, M.J. Goetz, J.J. Wagner, P.S. Johnson Jan 1988

Observations Concerning The Effects Of Ruminal Evacuation On Intake And Ruminal Recovery Of Dry Matter, M.J. Goetz, J.J. Wagner, P.S. Johnson

South Dakota Beef Report, 1988

The effect of repeated total ruminal evacuations on feed intake and animal behavior and rate of ruminal recovery expressed as percentage of feed bunk dry matter disappearance were observed in an observation trial with six Angus crossbred steers. Evacuation stimulated meal size and daily intake in comparison to that of a previous feeding. Feed intake decreased with consecutive evacuations. Two evacuation cycles at a 2-day interval may be the practical Limit to frequency of evacuations without a 1 to 2-week recovery period. Rate of recovery of dry matter from the rumen over a 4-hour period was extremely variable and not …

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Effect Of Late Season Supplementation On Performance Of Yearling Steers Grazing Mixed Native Range Or Cool Season, Russian Wildrye Pastures, J.J, Wagner, P.S. Johnson, G. Bennett Jan 1988

Effect Of Late Season Supplementation On Performance Of Yearling Steers Grazing Mixed Native Range Or Cool Season, Russian Wildrye Pastures, J.J, Wagner, P.S. Johnson, G. Bennett

South Dakota Beef Report, 1988

Seventy-six yearling, black-baldy steers were utilized in a grazing experiment to study the effect of Level of Late summer, early fall protein supplement (1 versus 2 lb., 40% all natural) and type of f all pasture (mixed native range versus Russian wildrye) on average daily gain. Cattle were purchased i n May as part of a larger group and gained at the rate of 1.4 lb. per head daily prior to initiation of the study on September 1, 1987. Average daily gain was not affected by pasture type. Steers grazing native range and Russian wildrye gained .81 and .72 lb. …

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Characterization Of Frost-Damaged Immature Soybeans For Alfalfa And Alfalfa-Brome Hay, Corn Silage Or Corn Based Diets, J.A. Loesche, R.H. Pritchard, Z.W. Wicks Jan 1988

Characterization Of Frost-Damaged Immature Soybeans For Alfalfa And Alfalfa-Brome Hay, Corn Silage Or Corn Based Diets, J.A. Loesche, R.H. Pritchard, Z.W. Wicks

South Dakota Beef Report, 1988

One compositional study and three single stage in vitro rumen fermentation experiments were conducted to characterize the feeding profile of frost-damaged immature soybeans (FDIS). Dauson and Dassel soybean plants were harvested at 86, 93, 100, 107 days post-planting and frozen at -5 C to contrast with natural frozen soybeans of the same varieties that were serially planted and harvested after the first killing frost. No differences between soybean variety were detected for crude protein (CP), ether extract (EE) or dry matter content (DM). Crude protein and EE content differed (P<.05) between maturities of artificially frozen (AF) soybeans. Only the EE content differed (P<.01) with maturity of naturally frozen (NF) soybeans. Planting date had an effect (P<.001) on composition of mature soybeans primarily due to increasing EE component. Exp. 1. Five levels of FDIS (0, 5,10, 15, 20%). three substrates (alfalfa hay, ALF), corn silage (CS), ground corn (WSC)) and two fermentation times (24 or 48 hours) were evaluated in single stage in vitro fermentations. FDIS supplementation had no effect on in vitro dry matter disappearance (IVDMD) of ALF or USC, indicating at the upper limit of FDIS supplementation had not been reached. IVDMD of corn silage was depressed (P<.01) when FDIS exceeded 10%. Increasing levels of FDIS increased NH –N (P<.01) but had no effect on VFA concentration in fermentation liquor. Exp. 2. Alfalfa-brome hay, ALF and CS were supplemented with FDlS for 48-hour IVDMD comparisons. IVDMD was not affected by substrate, but FDIS increased IVDMD of CS (P<.001). Exp.3. Four treatments, soybean meal (SBM), heated mature raw soybeans (HMB), heated FDIS (HFDIS) and FDIS, were used to differentiate oil content and trypsin inhibitor effects on roughage fermentation. Only SBM increased IVDMD (P<.05) of forages tested. FDIS included at 20% of the DM did not significantly decrease IVDMD of forages in most instances but may not stimulate digestion in the same manner as SBM.

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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 Jan 1988

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.

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Effect Of Previous Growing Program On The Benefits Of Restricting Feed Intake During The Finishing Phase, J.J. Wagner Jan 1988

Effect Of Previous Growing Program On The Benefits Of Restricting Feed Intake During The Finishing Phase, J.J. Wagner

South Dakota Beef Report, 1988

Eight pens of cattle that had been limit-fed a high energy growing diet and eight pens that had been full - fed a high roughage growing diet were fed either ad libitum amounts of a finishing diet or 93% of ad libitum for the first 70 days of the finishing phase. From day 71 through slaughter, all cattle received ad libitum amounts of the finishing diet. Interactions between previous growing program and level of feed intake during the finishing phase were significant (P<.05). Restricting the intake of finishing cattle that had been grown using a limit-fed, high energy diet resulted in improved (P<.05) feedlot performance (3.58 vs 3.28 lb per head daily average daily gain, respectively) and efficiency (6.18 vs 7.11, respectively) over the ad libitum fed cattle. For the cattle that had been grown using a high roughage program, restricting the intake of finishing cattle resulted in poorer (P<.07) performance (2.83 vs 3.16 lb per head daily, respectively) and efficiency (7.88 vs 7.19, respectively) compared with the ad libitum fed cattle. Whether or not cattle respond to restricted intake finishing regimens may be dependent upon level of dry matter intake, dietary energy density or rate of gain during previous growing program.

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Effect Of Limit Feeding High Energy Growing In The Efficiency Of Metabolizable Energy Utilization, J.J. Wagner Jan 1988

Effect Of Limit Feeding High Energy Growing In The Efficiency Of Metabolizable Energy Utilization, J.J. Wagner

South Dakota Beef Report, 1988

One hundred twenty-eight Angus steer calves were utilized in a study to examine the effect of limit feeding on efficiency of metabolizable energy (ME) utilization during the grouping phase and subsequent performance during the finishing phase. Steers limit-fed a high concentrate diet exhibited more rapid d a i l y gains than steers full -fed the same amount of energy from a high roughage diet (2.15 vs 1.74 lb per head, respectively). Feed conversion was improved by limit feeding compared with full feeding (6.09 vs 10.19, respectively). The efficiency of ME utilization was also improved. Limit - fed steers gained …

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High-Moisture Ear Corn And Corn Silage In Backgrounding Cattle Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins Jan 1988

High-Moisture Ear Corn And Corn Silage In Backgrounding Cattle Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins

South Dakota Beef Report, 1988

One hundred ninety-two Angus x Limousin steer calves (560 lb) were used in an 85-day backgrounding trial. Dietary crude protein levels of 90, 100, 110 and 120% of the NRC factorial equation recommendation were used within ad libitum-fed corn silage diets (CS) arid limit-fed chopped high-moisture ear corn (HMEC) diets. The objective was to determine if optimum dietary crude protein levels differed between these two basal diets when fed at similar levels of a net energy of gain. By design of the experiment, daily dry matter intake of HMEC diets was lower than CS diets (P<.001). ADG was similar across basal diets and feed conversion was improved (P<.001) with HMEC diets. Dietary crude protein level did not affect ADG. Quadratic decreases in the protein efficiency ratio occurred as dietary crude protein Level increased (P<.01). Plasma urea N (PUN) levels were higher in calves fed HMEC diets (P<.05) arid increased quadratically with increasing dietary crude protein level on day 56 (P<.05). This study suggests the NRC factorial equation estimates the gram daily crude protein requirement and can be used without modification to predict dietary crude protein needs of limit-fed feeder calves.

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Sdsu Purebred Beef Herds, R.J. Pruitt, R.M. Haigh Jan 1988

Sdsu Purebred Beef Herds, R.J. Pruitt, R.M. Haigh

South Dakota Beef Report, 1988

A herd of purebred Angus and Simmental cows is maintained at the Cow-Calf Teaching and Research Unit near the SDSU campus that is used for teaching, research and extension activities. Cattle maintained at this unit are used for introductory animal science, meats, animal breeding, reproductive physiology, beef production and livestock evaluation courses. Current reproductive physiology research under the direction of Dr. Herley Miller is reported elsewhere in this publication. Besides use in the classroom, cattle are used for the annual SDSU Little International, field days and numerous 4-H, FFA and other educational events. In addition to providing research information and …

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Interpreting Experimental Results, D.M. Marshall Jan 1988

Interpreting Experimental Results, D.M. Marshall

South Dakota Beef Report, 1988

No abstract provided.

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1988 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experimental Station, South Dakota State University, Cooperative Extension Service, South Dakota State University Jan 1988

1988 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experimental Station, South Dakota State University, Cooperative Extension Service, South Dakota State University

South Dakota Beef Report, 1988

This is the complete 1988 South Dakota Beef Report.

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Sdsu Dairy Digest, South Dakota State University Dairy Club Jan 1988

Sdsu Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.

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Lactational Evaluation Of Recombinant Bovine Somatotropin With Corn And Barley Diets, Wade Arthur Eisenbeisz Jan 1988

Lactational Evaluation Of Recombinant Bovine Somatotropin With Corn And Barley Diets, Wade Arthur Eisenbeisz

Electronic Theses and Dissertations

Forty-eight Holstein cows were randomly assigned wk 3 postpartum to a corn or barley diet from wk 4 through 44 postpartum. Cows within diets at wk 14 were randomly assigned to receive 0 (control), 10.3, 20.6, and 30.9 mg/hd/d of recombinant bovine somatotropin injected wk 15 through 44 postpartum. Forage dry matter was 80% corn silage and 20% alfalfa hay. Forage to concentrate ratio in total mixed diets varied from 50:50 to 70:30 with milk production. For the entire lactation, milk production of (29.7 and 29.1 kg/d) and 4% FCM (27.3 and ·25.9 kg/d) was lower for cows fed barley …

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Characteristics Of Milk And Butter From Cows Fed Sunflower Seeds, Robert Paul Middaugh Jan 1988

Characteristics Of Milk And Butter From Cows Fed Sunflower Seeds, Robert Paul Middaugh

Electronic Theses and Dissertations

Composition of milk and butter was evaluated from cows fed either control, or experimental diets containing added added fat of partially unsaturated fatty acid composition. The control diet concentrate mix consisted mainly of corn and soybean meal. The two experimental diets substituted either 20% high oleic acid sunflower seeds () 79% of fatty acids as oleic acid) or 20% regular sunflower seeds () 67% of fatty acids as linoleic acid) for part of the corn and soybean meal in the concentrate -mix. Milk protein concentration was similar for the control (3.3%) and high oleic sunflower seeds (3.3%), but increased in …

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Pik Certificates And Cattle Feeding, Donald Peterson Jan 1987

Pik Certificates And Cattle Feeding, Donald Peterson

South Dakota Beef Report, 1987

The primary objective of this study was to determine the optimal cooking rate and endpoint temperature of a precooking regime for beef roasts which maximizes consumer acceptability and storage stability. Percentage cooking loss and TEA values were minimized when roasts were precooked to the lowest endpoint temperature (45 C, 112 F). I n addition, long-term cooking (heating rate = 16 min/C) improved TEA values (Thiobarbituric acid, a test for oxidative rancidity) for precooked beef roasts. Sensory qualities did not differ (P>.05) due to cooking rate or endpoint temperature. Findings suggest that a low-temperature long-term cooking method optimizes (Pc.05) cooking …

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Effects Of Heating Rate And Endpoint Temperature On The Palatability And Storage Stability Of Precooked Beef Roasts, C.M. Chen, P.S. Dezeeuw, W.J. Costello Jan 1987

Effects Of Heating Rate And Endpoint Temperature On The Palatability And Storage Stability Of Precooked Beef Roasts, C.M. Chen, P.S. Dezeeuw, W.J. Costello

South Dakota Beef Report, 1987

The primary objective of this study was to determine the optimal cooking rate and endpoint temperature of a precooking regime for beef roasts which maximizes consumer acceptability and storage stability. Percentage cooking loss and TEA values were minimized when roasts were precooked to the lowest endpoint temperature (45 C, 112 F). I n addition, long-term cooking (heating rate = 16 min/C) improved TEA values (Thiobarbituric acid, a test for oxidative rancidity) for precooked beef roasts. Sensory qualities did not differ (P>.05) due to cooking rate or endpoint temperature. Findings suggest that a low-temperature long-term cooking method optimizes (Pc.05) cooking …

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Evaluation Of Varying Levels Of Hereford, Simmental And Angus Breeding Cows, D.M. Marshall, C.A. Dinkel Jan 1987

Evaluation Of Varying Levels Of Hereford, Simmental And Angus Breeding Cows, D.M. Marshall, C.A. Dinkel

South Dakota Beef Report, 1987

Cow size, reproductive performance and calf performance to weaning were evaluated for Simmental-Hereford cows (25 to 38% Hereford) mated to Hereford bulls, Simmental-Hereford cows (50% Hereford) mated to Hereford bulls, Simmental-Hereford cows (62-7!5% Hereford) mated to Simmental bulls, Angus-Hereford cows (25.38% Hereford) mated to Hereford bulls, Angus-Hereford cows (50% Hereford) mated to Hereford bulls and Angus-Hereford cows (62-75% Hereford) mated to Angus bulls. Simmental cross cows were heavier and taller and produced heavier calves at b i r t h and weaning than Angus cross cows. Pregnancy rate, calf preweaning survival rate and calf birth date did not vary significantly …

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Effects Of Bull Exposure On Post-Partum Interval And Reproductive Performance In Beef Cows, C.D. Naasz, H.L. Miller, R.H. Haigh Jan 1987

Effects Of Bull Exposure On Post-Partum Interval And Reproductive Performance In Beef Cows, C.D. Naasz, H.L. Miller, R.H. Haigh

South Dakota Beef Report, 1987

Spring calving beef cows were utilized to study the effect of bull exposure early postpartum on return to estrus and fertility. In the spring of 1985 and 1986, cows were randomly exposed to epididectomized bulls 3 to 7 days after calving until beginning of the breeding season or not exposed to bulls. Cows were observed for estrus twice daily beginning approximately 4 weeks after the start of calving until synchronization. I n 1986, blood samples were collected weekly by jugular venipuncture during heat detection and serum progesterone concentrations were determined. ALL cows were synchronized with Synchro-Mate B and inseminated 48 …

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Efficacy Of Terminator, Max-Con And Y-Tek Experimental Impregnated Ear Tag (Mc.602tc) For The Control Of Resistant Populations Of The Horn Fly In South Dakota During 1987, Emmett R. Easton, Glen Bennett Jan 1987

Efficacy Of Terminator, Max-Con And Y-Tek Experimental Impregnated Ear Tag (Mc.602tc) For The Control Of Resistant Populations Of The Horn Fly In South Dakota During 1987, Emmett R. Easton, Glen Bennett

South Dakota Beef Report, 1987

Insecticide impregnated ear tags containing Diazinon or Dursban/cypermethrin combinations when applied at the rate of two tags per cow were more effective for the control of horn flies than tags that were applied at the rate of one per cow. With the Terminator® tag, the percentage control diminished after 8 t o 10 weeks when one tag was present, but the percentage control remained constant over a period of 15 weeks with two tags per cow. With the Max-Con@ tag control was Less satisfactory after 6 weeks when only one tag per cow was applied, but good control was received …

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Rumen Injectable Probiotic Feed Additive For Newly Arrived Feedlot Cattle, J.J. Wagner Jan 1987

Rumen Injectable Probiotic Feed Additive For Newly Arrived Feedlot Cattle, J.J. Wagner

South Dakota Beef Report, 1987

The effect of rumen injectable microbials and microbial feed additives on feedlot performance and health were monitored in a 28-day receiving trial. Average daily dry matter intake and gain and feed conversion were 9.75 lb/day, 3.78 lb/day and 2.59 lb feed/lb gain, respectively, and were not significantly different between treatments. There appeared to be no advantage to using probiotics in this trial.

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Feeding High Grain Diets To Steer Calves With Different Feedlot Arrival Weights, R.H. Pritchard Jan 1987

Feeding High Grain Diets To Steer Calves With Different Feedlot Arrival Weights, R.H. Pritchard

South Dakota Beef Report, 1987

Crossbred steer calves (384 head) were used in a 2-year study to determine the effects of feedlot arrival weight and diet concentrate levels on feedlot performance and carcass variables. Steers were separated into Light (434 lb), medium (486 lb) and heavy (533 lb) groups based upon weights when they arrived at the feedlot. A low energy (LE) corn silage receiving and growing system was compared with a high energy (HE) system that involved feeding relatively higher levels of grain during receiving and growing periods. Calves were fed to similar fatness endpoints. Rate of gain was similar for weight groups, but …

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Three-Year Summary Of Preconditioning Effects On Pre- And Postshipment Performance Of Feeder Calves, R.H. Pritchard, J.K. Swann, M.A. Robbins Jan 1987

Three-Year Summary Of Preconditioning Effects On Pre- And Postshipment Performance Of Feeder Calves, R.H. Pritchard, J.K. Swann, M.A. Robbins

South Dakota Beef Report, 1987

Production efficiencies associated with preconditioning feeder calves have been evaluated using 600 calves obtained from four ranches over a 3-year period. Nonpreconditioned calves remained with their dams during preconditioning and all calves were shipped to a research feedlot on the same dates each year. Average daily gains of nonpreconditioned calves for 28 days prior to shipment were variable over years and related t o range conditions. ADG of nonpreconditioned calves during each year were 1.39, .2 and 2.12 b and differed (P< .001) from preconditioned c a l f gains of 2.18, 1.81 and .91 lb for the 39 days prior to shipment. Preconditioning responses interacted with ranch and year, indicating ranch conditions will have a significant impact on results. By weaning 30 days earlier, dams of preconditioned calves lost less weight during this same period. This effect was more pronounced when range conditions were poor. Preconditioning did not affect feed lot morbidity or mortality. During the initial 56 days in the feedlot, preconditioned calves consumed more dry matter each year but gains were similar. There was no effect of preshipment management on ADG after 56 days on feed and in the initial 2 years feed efficiency was better for nonpreconditioned calves. This advantage in feed efficiency carried through to slaughter at about 240 days.

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Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont Jan 1987

Effects Of Body Condition On Reproductive Performance Of Range Beef Cows, R.J. Pruitt, P.A. Momont

South Dakota Beef Report, 1987

Simnental-Angus crossbred cows were fed differing Levels of nutrition from December to May in each of 3 years to create a wide range in cow body condition or fleshiness at the beginning of the calving season (beginning mid-March) and when turned to summer pasture (early May) 1 month prior to the beginning of the breeding season (early June). Cows that were fleshier in March, May or June cycled earlier. Cows that were fleshier at the beginning of the breeding season calved earlier the following years. For cows that calved Late in the calving season, body condition prior to calving, in …

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Effect Of Restricting Feed Intake During The Finishing Phase On Feedlot Performance And Dietary Energy Utilization, J.J. Wagner Jan 1987

Effect Of Restricting Feed Intake During The Finishing Phase On Feedlot Performance And Dietary Energy Utilization, J.J. Wagner

South Dakota Beef Report, 1987

A total of 192 yearling Angus steers were used in two trials to investigate the impact of restricting feed intake on feed conversion and energy utilization. In trial 1, feed intake was restricted to approximately 83% of ad libitum. Cattle were slaughtered at a constant fatness. In trial 2, intake was restricted to approximately 93 and 85% of ad Libitum. After 56 days on feed, half of the 85% cattle were allowed to consume feed ad Libitum. Cattle were slaughtered at a constant cumulative NEg intake. Average daily gain was reduced for the restricted intake cattle compared with controls. Carcass …

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Alternate Feeding Of Corn And Corn Silage Diets To Feedlot Cattle, J.J. Wagner Jan 1987

Alternate Feeding Of Corn And Corn Silage Diets To Feedlot Cattle, J.J. Wagner

South Dakota Beef Report, 1987

One hundred twenty-eight Angus yearling steers (800 lb) were utilized in a trial to determine if feeding the concentrate portion of a 40% corn silage finishing diet separately from the silage would result in improved feedlot performance and feed conversion. Cattle fed the concentrate separately from silage achieved similar average daily gains and tended to have slightly better feed efficiency than cattle fed a completely mixed diet (2.26 vs 2.25 lb/head/day and 9.21 vs 9.89, respectively). Feeding completely mixed, high concentrate finishing diets resulted in the greatest performance and under current conditions is likely the most economical situation for most …

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Optimun Levels Of Dietary Crude Protein And Monensin For Steer Calves On Limit-Fed, High Concentrate Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins Jan 1987

Optimun Levels Of Dietary Crude Protein And Monensin For Steer Calves On Limit-Fed, High Concentrate Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins

South Dakota Beef Report, 1987

One hundred ninety-two Angus and Angus x Limousin calves (611 lb) were randomly allotted to one of four Levels of crude protein intake and three dosages of monensin in an 80% concentrate diet. Intake of the complete diet was restricted to allow 2.2 lb average daily gain over an 86-day period. Crude protein was fed at 90, 100, 110 or 120% of the gram daily requirement described by NRC. Monensin was fed at 120, 180 or 240 mg/head/day. Each 10% increase in dietary crude protein caused a .13 lb increase in ADG, a .34 unit improvement in feed efficiency and …

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