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South Dakota State University

2005

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Northeast Research Station Watertown, South Dakota Annual Progress Report, 2005, Agricultural Experiment Station, Plant Science Department Dec 2005

Northeast Research Station Watertown, South Dakota Annual Progress Report, 2005, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2005 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes weather data, yield comparisons, crop performance trials, corn trials, soybean trials, winter wheat performance testing, Barley Foliar information, weed and pest control, herbicide demonstrations, canola and flax variety trials and more.

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Northeast Research Station Watertown, South Dakota Annual Progress Report, 2004, Agricultural Experiment Station, Plant Science Department Dec 2005

Northeast Research Station Watertown, South Dakota Annual Progress Report, 2004, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2004 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes weather data, yield comparisons, crop performance trials, corn trials, soybean trials, winter wheat performance testing, Barley Foliar information, weed and pest control, herbicide demonstrations, canola and flax variety trials and more.

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Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 2005, Agricultural Experiment Station, Plant Science Department Dec 2005

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 2005, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2005 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 2005 crop season including: temperature and precipitation data, field evaluations of woody plant materials, alfalfa production, winter wheat breeding, oat research, resistance of sunflower germplasm to the red sunflower seed weevil, weed control, fertilizer and soil test effects on soybeans, small grain variety performance trials, evaluation of native and naturalized grasses for reduced-input turf in the Northern Plains, and the Highmore drip irrigation study final report.

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Small Grains And Field Peas: 2006 Variety Recommendations (2005 Crop Performance Results), Cooperative Extension Service, South Dakota State University Dec 2005

Small Grains And Field Peas: 2006 Variety Recommendations (2005 Crop Performance Results), Cooperative Extension Service, South Dakota State University

SDSU Extension Circulars

Variety selection is a fundamental element in a sound crop production program. This report contains variety recommendations, descriptions, and yield data for the spring-seeded small grains – hard red spring wheat, oat, and barley, along with the fall-seeded small grain –hard red winter wheat. Key factors in variety selection include yield, yield stability, maturity, straw strength, height, test weight, quality, and disease resistance. Yield is an important factor; however, a variety with good disease resistance, straw strength, and high grain quality may be more profitable in some cases than the highest yielding variety. Disease resistance information is based on reactions …

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Southeast South Dakota Experiment Farm Annual Progress Report, 2005, Agricultural Experiment Station Dec 2005

Southeast South Dakota Experiment Farm Annual Progress Report, 2005, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This document highlights 32 crop and livestock research and demonstration reports from projects conducted at Southeast Research Farm in 2005. It is published by the South Dakota Agricultural Experiment Station and Cooperative Extension Service at South Dakota State University in cooperation with the Southeast South Dakota Experiment Farm Corporation. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.

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Intramuscular Tenderness Variation Within Four Muscles Of The Beef Chuck, G.A. Searls, R.J. Maddock, D.M. Wulf Dec 2005

Intramuscular Tenderness Variation Within Four Muscles Of The Beef Chuck, G.A. Searls, R.J. Maddock, D.M. Wulf

Animal Science Faculty Publications

The i.m. tenderness variation was examined within four beef chuck muscles, the infraspinatus (IF), supraspinatus (SS), triceps brachii (TB), and serratus ventralis (SV). The IF, SS, TB, and SV muscles were cut into 2.5 cm thick steaks perpendicular to the long axis of the muscle. An identification tag was placed on each steak, consisting of a muscle identification number, steak number, and orientation of the steak. Steaks were vacuum-packaged and stored at −22°C until subsequent analysis. Steaks were thawed at 1°C and cooked on electric broilers to an internal temperature of 71°C. One core was removed from each 2.5-cm × …

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Determining The Optimum Beef Longissimus Muscle Size For Retail Consumers, K.K. Sweeter, D.M. Wulf, R.J. Maddock Nov 2005

Determining The Optimum Beef Longissimus Muscle Size For Retail Consumers, K.K. Sweeter, D.M. Wulf, R.J. Maddock

Animal Science Faculty Publications

Research was conducted in two phases to determine the optimum beef LM size for retail consumers. In Phase I, 50 USDA Choice beef carcass sides were selected at a commercial packing plant and assigned to five different categories (10 sides per category) based on LM size: 61 to 68 cm2 (A), 70 to 78 cm2 (B), 80 to 90 cm2 (C), 92 to 103 cm2 (D), and 105 to 119 cm2 (E). Ribeye rolls were retrieved from all carcass sides. Steaks (2.5-cm thick; 14 per ribeye roll) were cut as needed and transported in groups of 35 steaks (seven per …

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Evaluating Consumer Acceptability And Willingness To Pay For Various Beef Chuck Muscles, A.C. Kukowski, R.J. Maddock, D.M. Wulf, G.L. Taylor Nov 2005

Evaluating Consumer Acceptability And Willingness To Pay For Various Beef Chuck Muscles, A.C. Kukowski, R.J. Maddock, D.M. Wulf, G.L. Taylor

Animal Science Faculty Publications

In-home consumer steak evaluations, followed by centralized laboratory-setting auctions, were used to determine consumer (n = 74 consumers) acceptability and willingness to pay for various beef chuck muscles. The infraspinatus (IF), serratus ventralis (SV), supraspinatus (SS), and triceps brachii (TB) from the beef chuck were evaluated against LM steaks from the rib to determine price and trait differentials. Muscles from USDA Choice, boneless, boxed-beef subprimals were aged 14 d, frozen, and cut into 2.5-cmthick steaks. Consumers received two steaks from each muscle for in-home evaluations of uncooked steak appearance and cooked steak palatability. After in-home evaluation of steaks, consumers participated …

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Fire-Induced Albedo Change And Its Radative Forcing At The Surface In Northern Austrailia, Y. Jin, David P. Roy Jul 2005

Fire-Induced Albedo Change And Its Radative Forcing At The Surface In Northern Austrailia, Y. Jin, David P. Roy

GSCE Faculty Publications

This paper investigates the impact of fire on surface albedo and the associated radiative forcing over 56% of continental Australia encompassing the fire-prone northern tropical savanna. Fire-affected areas and albedos are derived for the 2003 fire season using daily Moderate Resolution Imaging Spectroradiometer (MODIS) surface reflectance data. Near-infrared and total shortwave albedos are observed to generally decrease after fire occurrence. Regionally, the total shortwave albedo drops by an average of 0.024, with increasing reductions as the dry season progresses and larger reductions in grasslands than woody savannas. These fire-induced albedo changes exert a positive forcing at the surface that increases …

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Interactions Among Western Corn Rootworm (Coleoptera: Chrysomelidae), Yellow Foxtail, And Corn, M. M. Ellsbury, K. R. Banken, S. A. Clay, F. Forcella Jun 2005

Interactions Among Western Corn Rootworm (Coleoptera: Chrysomelidae), Yellow Foxtail, And Corn, M. M. Ellsbury, K. R. Banken, S. A. Clay, F. Forcella

Agronomy, Horticulture and Plant Science Faculty Publications

Field studies at sites with two contrasting soil types investigated effects from the presence of yellow foxtail [Setaria pumila (Poir.) Roem. and Schult.], established in bands parallel to corn rows, on western corn rootworm (Diabrotica virgifera virgifera LeConte) survival, corn root injury, lodging, biomass production, and yield. Results suggested that the presence of foxtail as an alternate host inßuenced the degree and progression of corn rootworm damage and adult emergence in a givenlocality. Rootworm adults emergedlater from foxtail band areas and had smaller head capsule size than did individuals from areas without foxtail, consistent with earlier Þndings that foxtail in …

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South Dakota Agricultural Land Market Trends: 1991-2005, Larry Janssen, Erik Gerlach, Burton Plueger May 2005

South Dakota Agricultural Land Market Trends: 1991-2005, Larry Janssen, Erik Gerlach, Burton Plueger

Agricultural Experiment Station Circulars

Agricultural land values and cash rental rates in South Dakota, by region and by state, are the primary topics of this report. Target audiences are farmers and ranchers, landowners, agricultural professionals (lenders, rural appraisers, professional farm managers), and policy makers interested in agricultural land market trends. This report contains the results of the 2005 SDSU South Dakota Farm Real Estate Market Survey, the 15th annual SDSU survey developed to estimate agricultural land values and cash rental rates by land use in different regions of South Dakota.

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Asian Soybean Rust, College Of Agriculture And Biological Sciences, South Dakota State University May 2005

Asian Soybean Rust, College Of Agriculture And Biological Sciences, South Dakota State University

College of Agriculture, Food and Environmental Sciences Publications

Contents:
Where did soybean rust come from? Will it get to South Dakota? [Page] 1
Rust is manageable; we have time to plot its northward flight and to plan our response [Page] 1
The ages of soybeans: most vulnerable to Asian soybean rust are R1 through R6 [Page] 3
Scouting is your first line of defense [Page] 4
Biggest issue in spraying fungicides for soybean rust is droplet size [Page] 4
You may be dealing with insects, too. Protect your soybeans in early August [Page] 5
With or without rust in the picture, protect your price... and your revenue [Page] …

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2005 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University Mar 2005

2005 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International Agricultural Exposition Catalogs

No abstract provided.

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How To Calculate Machinery Ownership And Operating Costs, Burton Pflueger Feb 2005

How To Calculate Machinery Ownership And Operating Costs, Burton Pflueger

SDSU Extension Circulars

Machinery ownership and operating costs represent a substantial portion of total production expenses for South Dakota producers. Production practices today require increasingly specialized machinery and equipment and producers have to give more attention to the economics of their machinery investment alternatives. Large amounts of capital are invested in owning and operating farm machinery. Producers need to take time to manage their machinery investment to insure that they are achieving the desired return and efficiency. Machinery costs make up a significant part of the fixed and variable costs of any farm operation. However, they are sometimes difficult to calculate, particularly for …

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Effect Of Ovulatory Follicle Size And Standing Estrus On Circulating Hormone Concentrations And Interval To Ovulation, George A. Perry Feb 2005

Effect Of Ovulatory Follicle Size And Standing Estrus On Circulating Hormone Concentrations And Interval To Ovulation, George A. Perry

South Dakota Beef Report, 2005

In postpartum cows, ovulatory follicle size at time of insemination (GnRH/TAI) influenced pregnancy rates following TAI, but had no effect on pregnancy rates when cows spontaneously ovulated. Furthermore, cows that exhibited estrus (± 24 h of GnRH/TAI) had higher pregnancy rates compared to cows not in estrus. The objective was to assess the relationship between ovulatory follicle size and estradiol concentrations, timing of the LH surge, timing of ovulation, and subsequent progesterone concentrations. Cows were synchronized with the CO-Synch (n = 64; induced ovulation) or the Select Synch (n = 20; spontaneous ovulation) protocol. Cows that exhibited estrus and were …

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Effect Of Using Cidrs For Seven Days Before The Introduction Of Bulls On The Proportion Of Cows Conceiving Early In The Breeding Season, George A. Perry Jan 2005

Effect Of Using Cidrs For Seven Days Before The Introduction Of Bulls On The Proportion Of Cows Conceiving Early In The Breeding Season, George A. Perry

South Dakota Beef Report, 2005

Cows that conceive earlier in the breeding season wean calves that are older and heavier at weaning. Therefore, the objective of this study was to determine the ability of a CIDR to increase the proportion of cows that conceived early during a natural service breeding season. Two hundred twenty-two postpartum beef cows were allotted to one of two treatments: 1) cows were treated with a CIDR for 7 days before bulls were introduced (n = 100), 2) cows were not treated and served as a control (n = 122). Seven days before bulls were introduced to the herd CIDRs were …

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Comparison Of The Efficiency And Accuracy Of Three Estrous Detection Methods To Indicate Ovulation In Beef Cattle, George A. Perry Jan 2005

Comparison Of The Efficiency And Accuracy Of Three Estrous Detection Methods To Indicate Ovulation In Beef Cattle, George A. Perry

South Dakota Beef Report, 2005

The ability to successfully artificially inseminate cattle requires determining the appropriate time to inseminate. Therefore, detection of standing estrus is a major factor in the success or failure of most artificial insemination programs. The objective of these experiments was to determine the efficiency and accuracy of three estrous detection methods (visual, penile deviated bull, and Estrus Alert estrous detection aids) to determine if animals were going to ovulate. Fifty-three postpartum beef cows were synchronized with an injection of gonadotropin releasing hormone (GnRH) followed by an injection of prostaglandin F2_ (PG) seven days later. Estrus was monitored for 72 hours following …

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Spring Drought Effects On Rangeland Forage Yield From Clayey Ecological Sites In Western South Dakota, Alexander J. Smart, Roger N. Gates, Barry H. Dunn Jan 2005

Spring Drought Effects On Rangeland Forage Yield From Clayey Ecological Sites In Western South Dakota, Alexander J. Smart, Roger N. Gates, Barry H. Dunn

South Dakota Beef Report, 2005

Understanding the historical influence of seasonal precipitation, especially spring precipitation, and stocking rate on forage yield would be desirable for planning purposes. The objectives of this study were to examine the historical precipitation pattern and how it influenced forage yield on pastures that were stocked at light, moderate, and heavy stocking rates for 15 years at the Cottonwood Range and Livestock Research Station in western South Dakota. Weather data from 1909 to 2004 at the station were analyzed to determine the frequency of occurrence of below (≤75 of mean), normal, and above normal (>125% of mean) spring precipitation (April, …

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Sod Suppression Techniques For Legume Interseeding, Alexander J. Smart, Vance N. Owens, Dick Pruitt Jan 2005

Sod Suppression Techniques For Legume Interseeding, Alexander J. Smart, Vance N. Owens, Dick Pruitt

South Dakota Beef Report, 2005

Sod suppression is necessary for successful establishment of legumes interseeded into existing pasture; however such techniques vary in their effectiveness, cost, and management. Sod suppression experiments for legume interseeding into cool-season pasture were conducted at South Dakota State University’s Cow-Calf Unit located near Brookings, SD in 2003 to 2005. We evaluated (i) spring burn, (ii) field cultivator or disk, (iii) herbicide, (iv) heavy fall and spring graze, and (v) a control with no sod suppression. Legume species were alfalfa, birdsfoot trefoil, and kura clover. Sod suppression techniques enhanced the success of legume interseeding. In this study, the grazing equaled or …

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Effect Of Grazing, Mowing, Or Herbicide On Leafy Spurge Control, Kelly W. Bruns, Alexander J. Smart Jan 2005

Effect Of Grazing, Mowing, Or Herbicide On Leafy Spurge Control, Kelly W. Bruns, Alexander J. Smart

South Dakota Beef Report, 2005

Leafy spurge (euphorbia esula L.) is an herbaceous perennial which is deep rooted and can reproduce by seeds and rhizomes. First introduced into North America in the 1800’s from Europe, it now covers 25 states in the USA and several provinces in Canada. It is a major concern in North Dakota, South Dakota, Wyoming, Montana, and Nebraska. Leafy spurge is considered a noxious weed that is extremely competitive, establishing itself in pastureland and roadsides. Bangsund et al. (1997) estimated that by 2005, uncontrolled leafy spurge acres would reach 18.5 million in the Northern Great Plains. The cost of leafy spurge …

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Intravenous Ghrelin Infusion Affects Plasma Growth Hormone Concentrations, Dry Matter Disappearance, And Length Of Time Spent Feeding, Aimee E. Wertz-Lutz, Robbi H. Pritchard, Joseph A. Daniel, Jeff A. Clapper Jan 2005

Intravenous Ghrelin Infusion Affects Plasma Growth Hormone Concentrations, Dry Matter Disappearance, And Length Of Time Spent Feeding, Aimee E. Wertz-Lutz, Robbi H. Pritchard, Joseph A. Daniel, Jeff A. Clapper

South Dakota Beef Report, 2005

Six steers (915 ± 37.8 kg) were used in a crossover design to determine the effects of intravenous infusion of bovine ghrelin (BGR) on plasma growth hormone (GH) concentrations, length of time spent feeding, and dry matter disappearance per unit of metabolic weight. Steers were fed individually once daily (0800 h) and allowed to consume ad libitum until 2000 h when feed was removed. Daily feed allotment was sufficient to result in ≥ 10% feed refusal. Serial blood samples were collected from steers fitted with an indwelling jugular catheter at 15-min intervals from 0600 h through 1800 h. Harvested plasma …

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Effect Of Feeding Schedule On Tympanic Temperature Of Steer Calves During Winter, Simone M. Holt, Robbi H. Pritchard Jan 2005

Effect Of Feeding Schedule On Tympanic Temperature Of Steer Calves During Winter, Simone M. Holt, Robbi H. Pritchard

South Dakota Beef Report, 2005

Angus steer calves (n=135) were used in a 55d feedlot growing study to investigate the effects of feeding schedule on tympanic temperature response when limit feeding. Steers were fed a high moisture ear corn diet (58 Mcal/cwt NEg) at 0900h (AM), 1500h (PM) or 50% at 0900h and 50% at 1500h (SPLIT) to allow for 2.50lb ADG. Climatic data were collected at 30 min intervals throughout the study via an on site automated weather station. Tympanic temperatures (TT) were collected every 30 min (5 steers/trt) for 5d (d44 to d48). Mean ambient temperature during the 5d TT collection period was …

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Effect Of High-Sulfate Water On Trace Mineral Status Of Beef Steers, Cody L. Wright, Hubert H. Patterson Jan 2005

Effect Of High-Sulfate Water On Trace Mineral Status Of Beef Steers, Cody L. Wright, Hubert H. Patterson

South Dakota Beef Report, 2005

Two experiments were conducted to determine the effect of high-sulfate water on the performance, health, and mineral status of growing steers. The first experiment was conducted from June 20 to September 12, 2001, at the South Dakota State University (SDSU) Cottonwood Range and Livestock Research Station. Eighty-one crossbred steers (initial BW = 700 lb) were stratified by weight and randomly assigned to 12 dry-lot pens (6 or 7 steers/pen). Pens were then randomly assigned to one of three water quality treatments: 1) rural water (404 ppm sulfate), 2) well water (3087 ppm sulfate), and 3) stock dam water (3947ppm sulfate). …

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Relative Efficiency Of Natural Feeding Programs Using Germ Or Bran Cake From A Dry Milling Process, Robbi H. Pritchard, Donald L. Boggs Jan 2005

Relative Efficiency Of Natural Feeding Programs Using Germ Or Bran Cake From A Dry Milling Process, Robbi H. Pritchard, Donald L. Boggs

South Dakota Beef Report, 2005

This experiment was designed to evaluate the potential of using high-fat ethanol co-products in cattle feeding programs that exclude implants and ionophores. Four treatments included: 1) Positive Control, implanted steers fed a typical diet that included 29g/T monensin; 2) Control Diet fed to non-implanted steers; 3) 14% Germ, no implant or ionophore; and 4) 30% Bran Cake, no implant, no ionophore. After a 110 d finishing period, the breakeven (B/E) fed cattle price increased $3.04/cwt when an implant was not used on the Control diet. The Germ diet resulted in comparable performance as the Control diet fed to non-implanted steers. …

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Composition And Nutritive Value Of Corn Fractions And Ethanol Co-Products Resulting From A New Dry-Milling Process, Greg B. Kleinhans, Robbi H. Pritchard, Simone M. Holt Jan 2005

Composition And Nutritive Value Of Corn Fractions And Ethanol Co-Products Resulting From A New Dry-Milling Process, Greg B. Kleinhans, Robbi H. Pritchard, Simone M. Holt

South Dakota Beef Report, 2005

The development of a new dry-milling process for the production of corn ethanol has resulted in new feedstuffs. This process fractionates the corn kernel prior to fermentation. Pre-fermentation fractions include bran, germ, and endosperm. Post-fermentation fractions include dried distillers grains (DDG) and condensed distiller solubles (syrup). Proximate analysis was conducted on these fractions along with the parent corn sample. Equations were used to predict TDN and undegradable intake protein (UIP). These feeds differ substantially from historical dried distiller’s grains with solubles (DDGS). Feeding experiments will be necessary to confirm the results of the predicted feed values.

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Corn Germ As A Source Of Supplemental Fat For Cows In Late Gestation, Dick Pruitt, Jeff A. Clapper, William B. Epperson, George A. Perry Jan 2005

Corn Germ As A Source Of Supplemental Fat For Cows In Late Gestation, Dick Pruitt, Jeff A. Clapper, William B. Epperson, George A. Perry

South Dakota Beef Report, 2005

To evaluate corn germ as a source of supplemental fat, 217 two to twelve-year-old cows receiving grass hay free choice were supplemented with either 2.75 lb of corn germ (dry basis) or an equal amount of crude protein from soybean meal (0.80 lb dry matter) starting approximately 50 days prior to the first expected calving. Cows were removed from treatment the day they calved and where managed as a group through the breeding season. Supplement treatment did not affect cow weight change or body condition score. Corn germ did not improve any measure of reproduction, including the percentage of cows …

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Effect Of Harvest Method On The Nutrient Composition Of Baled Cornstalks, Cody L. Wright Jan 2005

Effect Of Harvest Method On The Nutrient Composition Of Baled Cornstalks, Cody L. Wright

South Dakota Beef Report, 2005

This experiment was conducted to determine the effect of chopping corn residue prior to baling on the nutrient composition of cornstalk bales. One dryland corn field planted with a single variety of corn was used. After harvest, one half of the field was chopped with a stalk chopper. The remaining half was not chopped. Each half of the field was then raked into windrows, baled, and wrapped with plastic netting. Ten round bales were harvested from each half of the field (chopped and not chopped). Three core samples were then collected from each bale and pooled for analysis. Pooled samples …

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Factors Affecting Profitability Of The Cow-Calf Enterprise In The Northern Great Plains, Barry H. Dunn, Dick Pruitt, Edward Hamilton, Duane Griffith Jan 2005

Factors Affecting Profitability Of The Cow-Calf Enterprise In The Northern Great Plains, Barry H. Dunn, Dick Pruitt, Edward Hamilton, Duane Griffith

South Dakota Beef Report, 2005

One hundred and forty eight privately owned and operated cow-calf enterprises were surveyed for their production and financial performance measures and the results analyzed for factors that affected profitability. The results of these analyzes indicate that for cow-calf enterprises in the Northern Great Plains, high levels of profit are a function of lower than average investment, above average reproductive performance, lower than average total expenses, and above average market prices for calves produced. Neither high nor low levels of other biological production, geographical region, size of operation, or year were factors that explained differences in profitability. Profitability measured as Return …

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Use Of Corn Co-Products In Soybean Hull-Based Feedlot Receiving Diets, Chad J. Mueller, Donald L. Boggs Jan 2005

Use Of Corn Co-Products In Soybean Hull-Based Feedlot Receiving Diets, Chad J. Mueller, Donald L. Boggs

South Dakota Beef Report, 2005

The use of different supplemental protein sources with soybean hulls in receiving cattle diets were evaluated using 200 Angus steer calves. Diets contained either corn and soybean meal (C-SBM), or soybean hulls with soybean meal (H-SBM), dried corn gluten feed (H-DCGF) or dried distillers grains plus solubles (H-DDGS). The replacement of corn (C-SBM) with soybean hulls (H-SBM) stimulated intake within the first 14 d of the receiving period and throughout the entire growing period (52 d). Supplementing soybean hulls with corn origin protein (COP) versus soybean meal did not result in any performance differences throughout the feeding period. Within the …

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Influence Of Calcium Metabolism On Meat Tenderness In Heiferettes, Kelly W. Bruns, Robbi H. Pritchard Jan 2005

Influence Of Calcium Metabolism On Meat Tenderness In Heiferettes, Kelly W. Bruns, Robbi H. Pritchard

South Dakota Beef Report, 2005

Forty beef-type heiferettes (initial BW=1016 ± 93 lb) were used to evaluate the influence of dietary calcium depletion followed by dietary repletion prior to slaughter on carcass and meat quality traits. Treatments were 1.) control - feed calcium diet for duration of trial (13 hd); 2.) calcium depleted 14 days followed by one feeding of replete diet 20 h prior to slaughter (13 hd); 3.) calcium depleted 14 days followed by two feedings of repleted diet 20 h and 44 h before harvest (14 hd). Heifers were sorted on condition and weight from a larger population of 280 head. Heiferettes …

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