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At least 343 records · Page 19Linked to original sources
PubMed2001

Managing N inputs and the effect on N losses following excretion in open-dirt feedlots in Nebraska.

Nutrition will play an important role in meeting the environmental challenges of beef cattle feedlots. Nutritionists are continually refining protein requirements, and have recently adopted a new metabolizable protein (MP) system to more efficiently use nitrogen (N) and allow more accurate diet formulation. Protein requirements vary by animal age and weight during the finishing period. Our hypothesis was that formulating diets with the MP system would decrease N inputs and lead to decreased excretion and losses. Comparing industry average diets (13.5% crude protein) to phase-fed diets formulated to not exceed MP requirements decreased N inputs by 10 to 20% for calves and yearlings without affecting average daily gain. Decreasing inputs led to a concomitant decrease in N excretion (12 to 21%) and losses (15 to 33%) in open-dirt feedlot pens. N losses are variable with time of year, with averages of 60 to 70% of excreted N lost during the summer months and 40% lost during the November to May feeding periods. Protein requirements are being refined continually as more research data are collected. However, formulation to meet protein requirements, but not exceed them, is an important nutritional management option for feedlots to become sustainable.

Animal Feed↗
PubMed2001

Nutritional methods to decrease N losses from open-dirt feedlots in Nebraska.

Nitrogen (N) losses from cattle feedlots are of concern due to loss of valuable N and enrichment of the atmospheric N pool. Nutritional methods to decrease such losses would have economic and environmental benefits. One method to decrease N losses is by increasing carbon (C) on the pen surface. The most cost effective method of decreasing N losses with C may be feeding diets lower in digestibility compared to adding C directly to pens. Therefore, three experiments evaluated feeding corn bran (which is less digestible than corn) as either 0, 15, or 30% of the diet. The 15- and 30%-bran diets increase organic matter (OM) excretion by approximately 0.5 and 1.0 kg per steer per day, respectively. Compared with no bran, feeding 15 and 30% decreased feed efficiency by 7.8 and 10.4%, respectively. Nutrient balance was assessed in two trials from October through May and in one trial from June to September. During the trials from October to May, N losses were decreased by 14.5 and 20.7% for the 15- and 30%-bran diets compared with no bran. Feeding 15 or 30% bran did not influence N losses in the experiment from June to September. Increasing the C:N ratio of manure prior to cleaning open-dirt feedlots had variable results depending on time of year.

Animal Feed↗
PubMed2004

A survey of compliance: Medicaid's mandated blood lead screenings for children age 12-18 months in Nebraska.

BACKGROUND: To determine the frequency of Medicaid mandated blood lead level (BLL) screening compliance rates by clinical site. METHODS: Retrospective chart review for evidence of BLLs. Data analyses were conducted using frequencies, percentages & chi-square. RESULTS: The overall incidence of documented BLLs was 78.9% with one clinic demonstrating 100% BLLs while the others had 72%. Screening rates differed significantly by clinical site (X2 = 18.460, df = 3, p < 0.001). CONCLUSION: Although universal blood lead screening is mandated, there were missed opportunities to obtain BLLs in 21.1% of the records reviewed. Only one clinic had 100% documentation of BLLs when children on Medicaid were seen between the ages of 12-18 months.

Child↗
PubMed1995

Western Nebraska family (family D) with autosomal dominant parkinsonism.

The etiology of Parkinson's disease (PD) remains uncertain. Environmental influences may have an important role, but genetic factors have been firmly implicated in several recently reported kindreds. We studied a family (family D) whose ancestors probably immigrated to the United States from England. The pedigree contains 188 individuals spanning six generations with 18 affected members. Autosomal dominant inheritance is present. Typical levodopa-responsive PD with bradykinesia, rigidity, resting tremor, and impaired postural reflexes develops. Eye movement abnormalities, pyramidal and cerebellar signs, sensory disturbances, and orthostatic blood pressure changes do not occur. Disease progression is slow. PET with [18F]-6-fluoro-L-dopa (FD) performed on an affected individual revealed decreased uptake of FD in a pattern consistent with PD. Autopsy performed on another affected individual demonstrated neuronal and pigmentary loss, gliosis, and Lewy bodies in the substantia nigra pars compacta. This large kindred appears to represent a neurodegenerative disorder closely resembling, if not identical to, idiopathic PD.

Aged↗
PubMedDate not supplied

A road map from Nebraska.

Explore the source record for details and available documents.

Community-Institutional Relations↗
PubMed2006

Dietary supplement use among adolescent athletes in central Nebraska and their sources of information.

The purpose of this study was to investigate the prevalence of dietary supplement use among adolescent athletes. The project was also directed at identifying the sources these student-athletes used for acquiring information about dietary supplements. One hundred thirty nine high school athletes (99 males; 34 females; mean age = 15.8 +/- 1.19 years) volunteered to participate in this study. A 16-question anonymous survey instrument examined use of dietary supplements, reasons for use, type of sport participation, and sources of information regarding dietary supplements. Of the participants in this study, 22.3% (N = 31) reported currently taking dietary supplements. There was no relationship found between dietary supplement use and age. There were a significantly higher number of males reporting current dietary supplement use. Of those who reported to be currently taking dietary supplements, sports performance (N = 25) was the most reported reason for use. There were no significant differences found in reported dietary supplement use between any of the sports. Of the participants, 38.1% (N = 53) listed their coach as their best source of information on dietary supplements. The results of this study offer the current literature some additional insight into trends in supplement use among high school student athletes. Practical implications suggest that it may be necessary to ensure coaches have sufficient knowledge about dietary supplements so that adolescent athletes are receiving accurate information.

Adult↗
PubMed2005

Flight behavior of methyl-parathion-resistant and -susceptible western corn rootworm (Coleoptera: Chrysomelidae) populations from Nebraska.

Relative flight behavior of methyl-parathion-resistant and -susceptible western corn rootworm, Diabrotica virgifera virgifera LeConte populations, was studied as part of a larger effort to characterize the potential impact of insecticide resistance on adult life history traits and to understand the evolution and spread of resistance. A computer interfaced actograph was used to compare flight of resistant and susceptible individuals, and flight of resistant individuals with and without prior exposure to methyl-parathion. In each case, mean trivial and sustained flight durations were compared among treatments. In general, there were few differences in trivial or sustained flight characteristics as affected by beetle population, insecticide exposure, sex, or age and there were few significant interactions among variables. Tethered flight activity was highly variable and distributions of flight duration were skewed toward flights of short duration. Tethered flight activity was similar among resistant and susceptible beetles with the exception that susceptible beetles initiated more flights per beetle than resistant beetles. After sublethal exposure to methyl-parathion, total flight time, total trivial flight time, and mean number of flights per resistant beetle declined significantly. Because long-range flight was uncommon, short- to medium-duration flights may play an important role in determining gene flow and population spread of resistant D. v. virgifera. These results suggest that organophosphate-resistant beetles can readily move and colonize new areas, but localized selection pressure (e.g., management practices) and exposure to methyl-parathion may contribute to the small-scale differences in resistance intensity often seen in the field.

Animals↗
PubMed1990

Computerized interpretation of the Luria-Nebraska Neuropsychological Battery: a pilot study.

Programs for the computer analysis and interpretation of neuropsychological test data have been developed in recent years. In this paper, a new computer program, with initial validation data, is presented. Diagnostic hit rate for brain damage was 80% (52 of 65). For the extent of brain damage the hit rate was 60% (12 of 20). When laterality was considered, the hit rate was 71% (10 of 14). These results are comparable with computer programs for data from the Halstead-Reitan Neuropsychology Test Battery.

Brain Damage, Chronic↗