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71 results match your criteria: "University of Arkansas Division of Agriculture[Affiliation]"
J Anim Sci
June 2013
University of Arkansas Division of Agriculture, Southwest Research and Extension Center, Hope 71801, USA.
Grazing forages on small-grain fields can be a profitable "second crop" for grain producers and an opportunity for cow-calf producers to retain ownership of weaned calves. The increasing costs of conventional tillage and movement of soil nutrients into surface water creates a need for more sustainable production practices to be incorporated by producers into wheat pasture production systems. Research at the Livestock and Forestry Research Station near Batesville, AR, and the Southwest Research and Extension Center near Hope, AR, has been conducted over a 9-yr span to characterize the impacts of pasture systems on forage production, animal performance, soil quality, water runoff, and the economics associated with the stocker cattle enterprises.
View Article and Find Full Text PDFJ Anim Sci
September 2012
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville 72701, USA.
Stocking rate is a fundamental variable for managing pastures, and there is a distinct relationship between stocking rate and animal performance for each forage type. This research was conducted to determine the effects of fall stocking rate (SR) and method of establishment of wheat pasture planted into dedicated crop fields on animal performance during the fall and subsequent spring. There was a factorial arrangement of tillage methods used in the establishment of wheat pasture and fall stocking rates.
View Article and Find Full Text PDFMeat Sci
June 2012
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, AR 72701, USA.
Ground beef, mixed with 0, 2, 4, and 6% Noni puree, was formed into 150-g patties, aerobically packaged, and displayed in retail for 5d. After 2 and 3d, patties with higher concentrations of Noni were perceived as redder and less discolored (P<0.05) by visual panelists.
View Article and Find Full Text PDFJ Invest Dermatol
March 2012
Department of Poultry Science, University of Arkansas Division of Agriculture, Fayetteville, Arkansas 72701, USA.
The Smyth line (SL) of chicken is an excellent animal model for human autoimmune vitiligo. In SL vitiligo (SLV), postnatal loss of melanocytes in feathers appears to be due to cell-mediated immunity. In this study, leukocyte infiltration and associated expression (RNA) of immune function-related cytokines in growing feathers were investigated throughout SLV development and progression.
View Article and Find Full Text PDFMol Plant Pathol
June 2012
Department of Plant Pathology, University of Arkansas Division of Agriculture, Fayetteville, AR 72701, USA.
Fusarium graminearum is a common pathogen of wheat and maize throughout the world. Despite recent advances in the elucidation of the genetic basis of virulence, significant gaps in the regulatory network underlying pathogenesis remain to be filled. In particular, little is known at the molecular level about the overlap among mechanisms of pathogenicity on maize and wheat.
View Article and Find Full Text PDFJ Anim Sci
September 2011
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, Arkansas 72701, USA.
Crossbred pigs (n = 216) were used to test the effect of supplemental L-carnitine (CARN) on the fatty acid composition and quality characteristics of fresh pork bellies from pigs fed diets formulated with different inclusion levels of corn oil. Pigs were blocked by BW (43.6 ± 1.
View Article and Find Full Text PDFMeat Sci
September 2011
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville 72701, USA.
Peer-reviewed journal articles (n=1068) were used to gather instrumental color measurement information in meat science research. The majority of articles, published in 10 peer-reviewed journals, originated from European countries (44.8%) and North America (38.
View Article and Find Full Text PDFMeat Sci
July 2011
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, AR 72701, USA.
Fresh pork bellies (n=24) were cut into 15 sections to measure the intra-belly variation in compositional and mechanical firmness characteristics. Length and width of each belly was measured before the belly was divided into 3 rows (D = dorsal; C = central; and V = ventral) and 5 columns (labeled 1, 2, 3, 4, and 5 from cranial to caudal), resulting in 15 belly sections of equal dimensions. The belly section with the greatest compression value was D-1, whereas the lowest compression value was found in the V-4 section (column×row, P<0.
View Article and Find Full Text PDFMeat Sci
May 2011
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, AR 72701, United States.
Steaks from 60 beef ribeye rolls were used to test the interactive effects of cookery method and end-point temperature on Warner-Bratzler shear force (WBSF) and internal cooked color. Pairs of longissimus thoracis (LT) steaks were assigned to combinations of 3 different end-point temperatures and 5 cookery methods. The forced-air convection oven (FAC) required the longest time and produced the reddest internal color, regardless of end-point temperature.
View Article and Find Full Text PDFMycologia
December 2010
Department of Plant Pathology, University of Arkansas Division of Agriculture, Fayetteville, Arkansas 72701, USA.
Many metabolic and developmental processes in fungi are controlled by biological rhythms. Circadian rhythms approximate a daily (24 h) cycle and have been thoroughly studied in the model fungus, Neurospora crassa. However relatively few examples of true circadian rhythms have been documented among other filamentous fungi.
View Article and Find Full Text PDFPlant Dis
September 2010
Department of Plant Pathology, University of Arkansas Division of Agriculture, Fayetteville 72701.
Thielaviopsis basicola (Berk. & Broome) Ferraris (synonym Chalara elegans Nag Raj & Kendrick) is a soilborne plant-pathogenic fungus reported in many parts of the world. In Arkansas, T.
View Article and Find Full Text PDFMeat Sci
July 2010
University of Arkansas Division of Agriculture, Department of Animal Science, AFLS B114, Fayetteville, AR 72701, USA.
Beef ribeye rolls (n=40) from Select, low Choice, top (upper 2/3) Choice, and Prime quality grade carcasses were used to determine the relationship of visible and near-infrared spectroscopy (VNIR) reflectance, Warner-Bratzler shear force (WBSF), and Meullenet-Owens razor shear (MORS) with consumer responses for tenderness and overall impression. Steaks (2.54 cm) were cut and assigned to either 14 or 28d aging (n=4/aging period).
View Article and Find Full Text PDFMeat Sci
October 2009
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, AR 72701, USA.
Fresh and cooked color of dark-cutting (DC) beef strip loins (mean pH=6.56) enhanced with 0.25, 0.
View Article and Find Full Text PDFJ Anim Sci
November 2009
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville 72701, USA.
The objective of the present experiment was to describe the sward canopy structures of 3 different wheat (Triticum aestivum L.) pastures and relate them to short-term herbage intake rate and foraging dynamics by steers. Pastures were sampled for leaf and stem fractions at the bottom, middle, and top canopy strata.
View Article and Find Full Text PDFJ Environ Qual
March 2009
Arkansas Water Resources Center, University of Arkansas Division of Agriculture, 203 Engineering Hall, Fayetteville, AR 72701, USA.
Many studies have shown the occurrence of antibiotics and degradation products in streams; however, relatively little work has applied a functional perspective to antibiotic transport and uptake. This study examined net changes in antibiotic concentrations downstream from a wastewater treatment plant (WWTP) effluent discharge and estimated net uptake length (Snet), net uptake velocity (v(f-net)), and net areal uptake rate (Unet) of antibiotics over a 3-km stream reach at Mud Creek, northwest Arkansas, USA, during June, September, and December 2006. Ten antibiotics and one degradation product (azithromycin, ciprofloxacin, erythromycin, erythromycin-H2O, ofloxacin, sulfachloropyridazine, sulfadimethoxine, sulfamethoxazole, tetracycline, oxytetracycline, and trimethoprim) were found at least once at Mud Creek downstream from the effluent discharge.
View Article and Find Full Text PDFMeat Sci
November 2008
Department of Animal Science, University of Arkansas Division of Agriculture, 1120 W. Maple AFLS B114, Fayetteville, AR, USA.
The longissimus thoracis (LT) from USDA Select beef carcasses was used to test the effect of aging period (0, 7, 14, 21, 28, or 35d) on bloom development (n=10/aging period). After aging, two 2.54-cm-thick, non-adjacent steaks were cut and instrumental color of the LT was measured at 10-min intervals for 2h.
View Article and Find Full Text PDFMeat Sci
November 2008
Department of Animal Science, University of Arkansas Division of Agriculture, 1120 W. Maple, AFLS B114 Fayetteville, AR, USA.
The gluteus medius (GM) from USDA Select beef carcasses was used to test the effect of aging period on bloom development. Top sirloin butts (IMPS #184) were randomly allocated to 0, 7, 14, 21, 28, and 35d vacuum-aging at 2°C (n=10/aging period). Each week, aged top sirloin butts were faced before two 2.
View Article and Find Full Text PDFJ Anim Breed Genet
November 2007
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, Arkansas 72701, USA.
Although genetics and preslaughter handling and management have the greatest impact on pork quality - especially water-holding capacity (WHC) - modifications to swine diets may offset the negative effects of genotype and/or pig handling on pork quality or improve quality attributes of pork from pigs with the genetic potential for good quality. There is little evidence that pork WHC is altered by the lysine or protein level (and source), cereal grain, or fat source used in growing-finishing diets. Yet, recent research indicates that feeding low-starch, high-fibre, high-fat, glycogen-reducing diets effectively improves the WHC of pork.
View Article and Find Full Text PDFMeat Sci
October 2007
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, AR 72701, USA.
Sixteen steers (441±31.7kg initial body weight) consumed two high concentrate diets with either 0 or 3% fish oil to determine the impact of fish oil, an omega-3 fatty acid source, on the fatty acid composition of beef carcasses. Collected tissue samples included the Longissimus thoracis from the 6th to 7th rib section, ground 10th to 12th rib, liver, subcutaneous adipose tissue adjacent to the 12th rib, intramuscular adipose tissue in the 6th to 7th rib sections, perirenal adipose tissue, and brisket adipose tissue.
View Article and Find Full Text PDFJ Anim Sci
February 2007
University of Arkansas Division of Agriculture, Southwest Research and Extension Center, Hope, AR 71801, USA.
Three sorghum x Sudangrass hybrids were planted in twelve 0.2-ha plots to test the effect of date of harvest and hybrid on plant maturity, DM yield, chemical composition, and in situ DM and fiber disappearance. Sweet Sunny Sue (a non-brown midrib (BMR) hybrid; nonBMR), NutriPlus BMR (a BMR hybrid; NP-BMR), and Dry Stalk BMR (a BMR hybrid; DS-BMR) were planted on 26 June 2003 at 22.
View Article and Find Full Text PDFJ Anim Sci
May 2005
Department of Animal Science, University of Arkansas Division of Agriculture, Fayetteville, 72701, USA.
Southern crabgrass (Digitaria ciliaris [Retz.] Koel.) is often viewed as an undesirable weed, largely because it encroaches upon field and forage crops, gardens, and lawns.
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