Copyright (c) 2013 University of Nebraska - Lincoln All rights reserved. http://digitalcommons.unl.edu/ardhaskell Recent documents in Haskell Agricultural Laboratory (Northeast Research and Extension Center) en-us Thu, 24 Jan 2013 11:33:29 PST 3600 http://digitalcommons.unl.edu/ardhaskell/15 http://digitalcommons.unl.edu/ardhaskell/15 Thu, 31 May 2012 12:34:25 PDT The objective of this project was to investigate the effects of selecting sires for residual feed intake (RFI) on the performance of their daughters. Bulls with low or high estimated breeding values (EBV) for RFI were selected from the Angus Society of Australia sire summary and mated to Angus cross commercial cows at the Kansas State University Cow-Calf Unit in 2005 and 2006. The average EBV of low- and high-RFI bulls were −0.55 and 0.27 kg DM, respectively. Heifers born in 2006 were tested for feed intake in 2 groups (n = 24, n = 26), and heifers born in 2007 (n = 42) were sent to a commercial bull test facility for feed intake and BW gain tests. Body weights were collected every 14 d and used to calculate midtest BW and ADG. Actual feed intake was regressed on midtest metabolic BW and ADG to calculate an expected feed intake for each heifer. Residual feed intake was calculated by subtracting the expected intake from the actual intake. There were no significant differences between heifers sired by lowor high-RFI EBV bulls in RFI, feed intake, G:F, or BW gain (P > 0.05). Heifers in this study were being developed on a less energy-dense diet than the diet used to rank their sires. Genetic differences in RFI calculated in growing bulls may not have been expressed on the lower plane of nutrition of these developing heifers.

]]> J. Minick Bormann et al. http://digitalcommons.unl.edu/ardhaskell/14 http://digitalcommons.unl.edu/ardhaskell/14 Thu, 31 May 2012 12:32:50 PDT Body temperature is often used as an indicator of animal health status. In a series of handling experiments, tympanic temperatures (TT) were obtained in unrestrained feedlot cattle. In a January experiment (BW = 531 ± 54 kg), TT were increased (P<0.05) 0.65°C and 0.58°C by moving cattle 600 m in morning and afternoon, respectively. Moving cattle (BW = 456 ± 67 kg) 150 and 600 m in August elevated TT by 0.30°C and 0.67°C, respectively. Moving cattle (BW = 415 ± 62 kg) 900 m in June elevated (P<0.05) TT by 0.78°C. Recovery TT was determined to be the time peak TT declined to levels equal to or below control (non-moved cattle) TT. Recovery times averaged 3.5 h in the winter, but ranged from <1 h to approximately 2 h in the spring and summer experiments. Moving cattle decreased (P<0.05) feed intake by approximately 1 kg/d for up to 48 h after moving was completed. Moving cattle in the morning also decreased (P<0.05) the number of animals resting in the afternoon (1400 h; Experiment 3) and increased (P<0.05) the number of animals panting throughout the day (1100 and 1400 h; Experiment 4). Effects of cattle movement on body temperature may need to be taken into account when evaluating animal health status. Conclusions based on these data would be most applicable for feedlot cattle exposed to warm and thermoneutral environmental conditions.

]]> T. L. Mader et al. http://digitalcommons.unl.edu/ardhaskell/13 http://digitalcommons.unl.edu/ardhaskell/13 Thu, 31 May 2012 12:30:00 PDT In Exp. 1, six individually fed Hereford steers were exposed to hot (HOT) or thermoneutral (TNL) environmental conditions (ENV) while being adapted (stepped-up) to a finishing diet by decreasing roughage level from 55 to 10% of the diet DM over 17 d. Only at 10% roughage did heat exposure result in reduced (P<0.05) calculated ME intake (MEI) and measured DMI. In the TNL treatment group, pulse rates increased as MEI and diet energy density increased (P<0.05), whereas in the HOT treatment group, pulse rate tended to decline when MEI declined. Body temperature (BT) of steers increased under both TNL and HOT conditions. In Exp. 2, six individually fed feedlot steers were assigned in a replicated (n = 3) 2 ´ 3 factorial arrangement of treatments and exposed to HOT or TNL ENV, whereas the diet treatments were a 6% roughage diet fed ad libitum (HE), or 90% of ad libitum (RE), or a 28% roughage diet (HR) fed ad libitum such that MEI approximated the MEI of the RE group. Steers fed HR diets had lower (P<0.05) respiratory rate and BT than HE and RE fed steers. Steers fed RE diets had greater (P<0.05) water intake than HE fed steers when averaged across ENV. Lower BT (P<0.05) of cattle fed RE and HR would indicate MEI prior to exposure to excessive heat load (EHL) influences ability of cattle to cope with subsequent exposure to excessive heat load. Data also indicate that adapting cattle to high energy diets partially contributes to EHL.

]]> T. L. Mader et al. http://digitalcommons.unl.edu/ardhaskell/12 http://digitalcommons.unl.edu/ardhaskell/12 Thu, 31 May 2012 12:27:56 PDT An experiment was conducted to determine the effects of heavyweight pig removal and remixing on performance. The experiment used a total of 450 pigs (31 kg initial BW) that were sorted and remixed at a mean replicate BW of 73 kg. Treatments were 15 pigs/pen from initial BW to slaughter (15S), 20 pigs/pen from initial BW to time of sort and remix, then reduced to 15 pigs/pen (20/ 15), and 15 pigs/pen from time of sort and remix to slaughter, comprised of the 5 heaviest pigs from each of three 20/15 pens per replicate (15M). Space allocation was 0.56 m2/pig to the day of remixing and 0.74 m2/pig thereafter. There was no effect (P > 0.1) of treatment on ADG before 73 kg BW when pens were 1A contribution of the University of Nebraska Agricultural Research Division, Lincoln, NE 68583. Journal series no. 14679. 2To whom correspondence should be addressed: mbrumm1@unl.edu 3Committee members during the study in addition to those listed above were G. Apgar, SIU; M. Carlson, MO; R. K. Christenson, USDA-ARS RLH USMARC; L. Christianson, IL; M. Ellis, IL; R. Goodband, KSU; J. D. Harmon, IA; M. Honeyman, IA; D. D. Jones, IN; S. J. Moeller, OH; B. Richert, IN; K. Stalder, TN; R. C. Thaler, SD. the experimental units. There was no effect (P > 0.1) of treatment on ADG or feed conversion to slaughter BW following removal and remixing using the contrast 20/15 + 15M vs. 15S. The average of the replicate for 20/15 and 15M was used as the experimental unit in a second statistical analysis. Daily feed was less (P = 0.079) from placement to 73 kg BW for the 20/15 + 15M population vs. the 15S population resulting in a lesser (P = 0.067) overall ADG (0.875 vs. 0.887 kg/d, respectively) with no effect (P > 0.1) on feed conversion or CV sample population BW. Removal and remixing of heavyweight pigs at a midpoint in the growth process had minimal effects on performance to slaughter and CV for BW at slaughter.

]]> M. C. Brumm et al. http://digitalcommons.unl.edu/ardhaskell/11 http://digitalcommons.unl.edu/ardhaskell/11 Wed, 17 Jun 2009 12:36:44 PDT Contents:
Welcome
Conservation Buffers: Conservation Buffers to Protect Water Quality by Dave Shelton
Crop Nutrition: Nitrogen Use Efficiency by Charles Shapiro
Water Resources: Surface Runoff by William Kranz
4-H Youth and CRD: Nebraska 4-H by Vickie L. Greve
Beef Cattle Research: Concentrated Animal Feeding Operations (CAFOs) by Terry Mader
Integrated Weed Management: Flaming for Weed Control by Stevan Knezevic
Entomology: Comprehensive Insect Management by Tom Hunt
Makin’ Money Entrepreneurship Camp by Sandy Preston
Swine Research by Don Lewis
Extended Education: Extending Campus Resources in the District by Vicky Jones
Nebraska Forestry: Great Plains Tree and Forest Invasives Iniative by Steve Rasmussen
Integrated Pest Management: Corn Rootworm Management Options by Keith Jarvi
Organic Research: Cover Crops, Crop Rotations, Healthy Farm lndex by Liz Sarno
Northeast Arboretum by Del & Alice Hemsath

]]> http://digitalcommons.unl.edu/ardhaskell/10 http://digitalcommons.unl.edu/ardhaskell/10 Wed, 17 Jun 2009 12:36:43 PDT At The Soybean Learning Center you'll experience an event coordinated by agronomic professionals that will emphasize a practical, hands-on approach in teaching all aspects of soybean production. At three field stops, soybean producers will learn how new technologies affect soybean productivity.

]]> http://digitalcommons.unl.edu/ardhaskell/9 http://digitalcommons.unl.edu/ardhaskell/9 Wed, 17 Jun 2009 12:36:43 PDT This Nebraska study, in its second year, seeks answers on using lagoon effluent safely on least amount of land possible.

]]> Dave Howe http://digitalcommons.unl.edu/ardhaskell/8 http://digitalcommons.unl.edu/ardhaskell/8 Wed, 17 Jun 2009 12:36:42 PDT As the livestock industry in the midwest undergoes rapid change, issues associated with the storage and land application of the manure have increasingly become a focus of public concern. Both USDA and Land Grant Universities have increased their efforts in addressing the concerns raised in recent years.
The Manure Distribution Field Day on August 28, will highlight many of the research efforts currently underway at the University of Nebraska, Iowa State University, and South Dakota State University. Manure storage systems, land application equipment, and odor control associated with livestock systems will be highlighted. You will be able to view displays and visit with personnel from the various universities and regulatory agencies, including Nebraska Department of Environmental Quality and various Natural Resources Districts.
Finally, while you're visiting the displays and enjoying the tours, fill up with a FREE lunch.
The Field Day is a cooperative effort between the Nebraska Water Center; the University of Nebraska, Iowa State University, and South Dakota State University Cooperative Extension; and the Papio-Missouri, Lower Elkhorn, and Upper Elkhorn Natural Resource Districts.
Major funding for the Field Day has been provided by the Nebraska Water Center, and the Papio, Lower Elkhorn and Upper Elkhorn Natural Resource Districts.

]]> http://digitalcommons.unl.edu/ardhaskell/7 http://digitalcommons.unl.edu/ardhaskell/7 Wed, 17 Jun 2009 12:36:42 PDT You’re looking at the interior of what’s called a “double-wide” swine finishing unit unveiled at the University of Nebraska Northeast Research and Extension Center open house, at Concord, in late June.
Northeast Center swine specialist Mike Brumm says the first study in the new research unit will look at space requirements for feeding pigs to a market weight of 300 pounds under all-in-all out operation. Various pen size and number combinations will be the focus of future research in the unit which can be divided into the following arrangements: Eight pens, each 14 by 16 feet; 16 pens, each 8 by 14 feet; and 32 pens, each 7 by 8 feet. The animal space equals 8 square feet per head for 224 head.

]]> http://digitalcommons.unl.edu/ardhaskell/5 http://digitalcommons.unl.edu/ardhaskell/5 Wed, 17 Jun 2009 12:36:41 PDT Our conservation ethics determine the importance we place on water, one of our most precious natural resources. All life revolves around and depends on clean water. Quality of life now and for future generations is dependent upon our current treatment of water resources.

]]> http://digitalcommons.unl.edu/ardhaskell/6 http://digitalcommons.unl.edu/ardhaskell/6 Wed, 17 Jun 2009 12:36:41 PDT Contents:
Schedule of Events
Field Day Map
Exhibits and Activities
Brief History of the Haskell Ag Lab
A Very Special Thank You!
To Our Donors & Volunteers

]]> http://digitalcommons.unl.edu/ardhaskell/4 http://digitalcommons.unl.edu/ardhaskell/4 Wed, 17 Jun 2009 12:36:40 PDT For the past 25 years, the Northeast Station at Concord has served as the cornerstone of University of Nebraska agricultural research and Extension activity in northeast Nebraska. This year marks the twenty fifth anniversary of the founding of the station and commemorates the dedication of the citizens of this area in their commitment to its success.
While the land the station occupies may not look different from its surroundings, its purpose is. The Northeast Station operates as a part of a statewide agricultural experiment station and Cooperative Extension Service network. The mission of the station is to research agricultural topics that are important to northeast Nebraska and to provide this and other available information to farmers, their families and other interested people.

]]> http://digitalcommons.unl.edu/ardhaskell/2 http://digitalcommons.unl.edu/ardhaskell/2 Wed, 17 Jun 2009 12:36:39 PDT Contents:
Welcome by Robert D. Fritschen
Swine Research by Michael Brumm
Beef Research by Terry Mader
Human Nutrition by Darlene Martin
4-H & Youth by Vickie Greve
CRP Research to Crops by Melinda McVey McCluskey
Entomology: Bt Transgenic Corn by Jerry Echtenkamp and John Witkowski
Forestry in Nebraska by Steve Rasmussen
Narrow Row Planting Patterns in Corn by Mark Langrud
Crop Residue Management: Manure Injection by David Shelton
Crop Nutrition by Charles Shapiro
Soil Water Management by William Kranz

]]> http://digitalcommons.unl.edu/ardhaskell/3 http://digitalcommons.unl.edu/ardhaskell/3 Wed, 17 Jun 2009 12:36:39 PDT Contents:
Welcome by Robert D. Fristchen
Integrated Weed Management by David Holshouser
Integrated Pest Management by Keith Jarvi
Crop Nutrition by Charles Shapiro
Soil Water Management: Nitrogen Use by None-Effective Alfalfa by William Kranz
Crop Residue Management: Manure Injection by David Shelton
CRP Research to Crops by Melinda McVey McCluskey
Entmology: Bt Transgenic Corn by John Witkowski
Forestry in Nebraska: Nebraska Conservation Tree/Shrub Program by Steve Rasmussen
Swine Research by Michael Brumm
Beef Research by Terry Mader
Human Nutrition by Darlene Martin
4-H and Youth by Vickie Greve

]]> http://digitalcommons.unl.edu/ardhaskell/1 http://digitalcommons.unl.edu/ardhaskell/1 Wed, 17 Jun 2009 12:36:38 PDT Contents:
Landscape Stewardship Site of the Nebraska Statewide Arboretum
The Fruit Orchard
Perennial Flowerbeds
Island Plantings
Vine Display

]]>