scholarly journals Dietary Trace Minerals

Nutrients ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2823 ◽  
Author(s):  
Elad Tako
Keyword(s):  
Wilson Disease ◽  
Trace Minerals ◽  
Special Issue ◽  
Trace Mineral ◽  
Inborn Errors ◽  
Kidney Dialysis ◽  
Literature Reviews ◽  
Iron And Zinc ◽  
Hereditary Disorders ◽  
Health And Development

Dietary trace minerals are pivotal and hold a key role in numerous metabolic processes. Trace mineral deficiencies (except for iodine, iron, and zinc) do not often develop spontaneously in adults on ordinary diets; infants are more vulnerable because their growth is rapid and intake varies. Trace mineral imbalances can result from hereditary disorders (e.g., hemochromatosis, Wilson disease), kidney dialysis, parenteral nutrition, restrictive diets prescribed for people with inborn errors of metabolism, or various popular diet plans. The Special Issue “Dietary Trace Minerals” comprised 13 peer-reviewed papers on the most recent evidence regarding the dietary intake of trace minerals, as well as their effect toward the prevention and treatment of non-communicable diseases. Original contributions and literature reviews further demonstrated the crucial and central part that dietary trace minerals play in human health and development. This editorial provides a brief and concise overview that addresses and summarizes the content of the Dietary Trace Minerals Special Issue.

scholarly journals Effects of inorganic minerals replaced by complexed glycinates on growth, blood profiles, immune responses, intestinal morphology, and mineral excretion in piglets

2020 ◽  
Author(s):  
Xun Pei ◽  
Geng Wang ◽  
Lujie Liu ◽  
Wanjing Sun ◽  
Zhiping Xiao ◽  
...  
Keyword(s):  
Immune Responses ◽  
Low Dose ◽  
Average Daily Gain ◽  
Basal Diet ◽  
Intestinal Morphology ◽  
Trace Minerals ◽  
Control Group ◽  
Trace Mineral ◽  
Mineral Excretion ◽  
Blood Profiles

Abstract BACKGROUND: The effects of inorganic trace minerals (ITM) replaced by low-dose glycine-complexed trace minerals (GCM) on growth, serum parameters, immunity, intestinal morphology, and mineral excretion in piglets were investigated. One hundred and twenty-eight weaned piglets (14.18 ± 0.33kg body weight (BW)) were randomly assigned to 4 treatments with 4 replicates, 8 piglets per replicate. Treatments consist of: (T1) basal diet + 100% inorganic trace mineral (ITM) as the control group (20 ppm Cu, 150 ppm Fe, 150 ppm Zn, and 30 ppm Mn from sulfates); (T2) basal diet + 50% ITM (Cu, Fe, Zn, and Mn from sulfates, 50% of control) + 50% organic trace minerals (OTM, Cu, Fe, Zn, and Mn from glycine complexed trace minerals (GCM), 50% of control); (T3) basis diet + 50% OTM from GCM; (T4) basal diet + 70% OTM from GCM. The feeding period lasted 28 d and was divided into 2 stages (0 to 14 d and 15 to 28 d). After feeding trial , 6 pigs per treatment were randomly selected to slaughter for sampling. RESULTS: Average daily gain, feed intake, and G:F were not affected by dietary treatments during the overall period. During the second, and the overall feeding phases, the digestibility of Zn and Fe in T3 and T4 was higher than that of T1 ( P < 0.05). The concentration of serum ferritin in T2 was significantly higher than T3 and T4. Serum immunoglobulin A concentration in the ileal mucosa of T2 was higher than that of T1 ( P < 0.05), and the higher duodenum villus height was observed in T4 compared with the rest treatments ( P < 0.05). The lowest trace mineral excretion was overserved in T3 ( P < 0.01); in addition, the urinary concentrations of Zn and Fe in T2 were lower than that in T1 ( P < 0.05). CONCLUSION: These results indicate that GCM have higher bioavailability than ITM, and that supplementation of low-dose GCM to replace full dose ITM could reduce mineral excretion without affecting performance, blood profiles, immune responses, and intestinal morphology in piglets.

Research paradigms in international human resource management: An epistemological systematisation of the field

2020 ◽  
Vol 34 (2) ◽  
pp. 99-123
Author(s):  
Jaime Bonache ◽  
Marion Festing
Keyword(s):  
Resource Management ◽  
Human Resource Management ◽  
Human Resource ◽  
Extensive Literature ◽  
Special Issue ◽  
International Human Resource Management ◽  
Research Paradigms ◽  
Literature Reviews ◽  
International Human ◽  
Sampling Procedures

The explicit consideration of Research Paradigms in International Human Resource Management, the title of this Special Issue, helps us in analysing and systematising the field to show how research in international human resource management is typically conducted, what preferred perspectives prevail and which approaches have been rather neglected so far. In this introduction, we map the field, and after defining the contours of international human resource management, we use the distinction between positivism and interpretivism to outline implications for the goals of international human resource management studies and associated ontological and epistemological assumptions. Next, we analyse research methods, ways to construct research questions, researchers’ roles, sampling procedures, data collection techniques, key theoretical contributions, focus on context in theory construction, quality indicators of data analysis and evaluation criteria in each of the two key research paradigms when studying international human resource management issues. In so doing, we offer a framework for the contributions made to this Special Issue, including literature reviews focusing on the systematisation of international human resource management research, using various paradigm lenses and specific methods. We sincerely hope that the notions, typologies and contributions included in this Special Issue, all based on extensive literature reviews, will help advance research in international human resource management.

scholarly journals 79 Effect of source and dietary concentration of trace minerals on serum mineral status, ruminal pH, and ruminal volatile fatty acids in lactating Holstein dairy cows

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 71-71
Author(s):  
Nicole T Briggs ◽  
Bayissa Hatew ◽  
Michael A Steele
Keyword(s):  
Volatile Fatty Acids ◽  
Rumen Fluid ◽  
Latin Square ◽  
Experimental Period ◽  
Rumen Fermentation ◽  
Trace Minerals ◽  
Trace Mineral ◽  
Mineral Status ◽  
Ruminal Ph ◽  
Dietary Concentration

Abstract Inorganic sources of trace minerals are commonly supplemented in dairy cow diets; however, there has been an increase in the supplementation of minerals complexed with organic compounds. These organic trace minerals are thought to have greater bioavailability which may enhance rumen fermentation and absorption. The objective of this study was to assess the effects of dietary concentration and source of supplemental trace minerals on serum trace mineral status and rumen fermentation. Six lactating Holstein cows were used in a 6 x 6 Latin square design with a 23-day adaptation and 5-day experimental period. Cows were fed the same basal diet daily except for the difference in source [organic (ORG) versus inorganic (INO)] and concentration (50%, 100%, and 200% based on NRC recommendations) of trace mineral supplemented. During the experimental period feed intake and blood were collected daily. Rumen fluid was collected on the final two days of the experimental period. Data was analyzed with PROC MIXED in SAS 9.4. Dry matter intake (18.1 ± 0.70 kg), serum mineral concentrations (Cu, Mn, Se, and Zn), and rumen pH (6.5 ± 0.64) did not differ among the treatments. However, serum concentration of Co was higher in 200% ORG compared to 50% and 100% INO and 50% ORG. Ruminal concentration of acetate was higher in 50% and 100% ORG compared to 200% ORG. Butyrate ruminal concentration was higher at 50% ORG compared to 200% ORG. Ruminal propionate concentration was higher in 50% INO and 50% ORG compared to 100% INO and 200% ORG. These findings demonstrate serum trace mineral status and ruminal pH are not tightly controlled by the source of trace minerals when supplemented at 50%, 100% and 200% of the NRC recommendations, however rumen fermentation may be affected by the dietary concentration of trace minerals in the diet.

European Accounting Review special issue on literature reviews in accounting

2019 ◽  
Vol 24 (2) ◽  
pp. 322-322
Author(s):  
Carlos Larrinaga ◽  
Hervé Stolowy
Keyword(s):  
Special Issue ◽  
Literature Reviews

scholarly journals Forward from the crossroads of ecology and evolution

2011 ◽  
Vol 366 (1569) ◽  
pp. 1322-1328 ◽  
Author(s):  
Jennifer K. Rowntree ◽  
David M. Shuker ◽  
Richard F. Preziosi
Keyword(s):  
Genetic Diversity ◽  
Evolutionary Biology ◽  
Research Literature ◽  
Community Genetics ◽  
Theoretical Development ◽  
Ecological Community ◽  
Special Issue ◽  
Community Genetic ◽  
Genetics Research ◽  
Literature Reviews

Community genetics is a synthesis of community ecology and evolutionary biology. It examines how genetic variation within a species affects interactions among species to change ecological community structure and diversity. The use of community genetics approaches has greatly expanded in recent years and the evidence for ecological effects of genetic diversity is growing. The goal of current community genetics research is to determine the circumstances in which, and the mechanisms by which community genetic effects occur and is the focus of the papers in this special issue. We bring a new group of researchers into the community genetics fold. Using a mixture of empirical research, literature reviews and theoretical development, we introduce novel concepts and methods that we hope will enable us to develop community genetics into the future.

scholarly journals PSXII-13 The influence of trace mineral source on copper, manganese, and zinc binding strength to rumen digesta in cattle fed a high forage-based diet

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 443-443
Author(s):  
Octavio Guimaraes ◽  
Huey Yi Loh ◽  
Meghan P Thorndyke ◽  
Nicole M Tillquist ◽  
Jerry W Spears ◽  
...  
Keyword(s):  
Insoluble Fraction ◽  
Trace Minerals ◽  
Trace Mineral ◽  
Binding Strength ◽  
Pulse Dose ◽  
Copper Manganese ◽  
High Forage ◽  
Mineral Concentrations ◽  
Cu And Zn ◽  
Mn Concentrations

Abstract Twelve crossbred Angus steers fitted with rumen cannulae were used to determine the influence of trace mineral source on ruminal soluble mineral concentrations and relative binding strength of trace minerals in the ruminal insoluble digesta fraction. Steers were adjusted to a low-quality hay (chopped) diet balanced to meet the nutrient requirements for growing steers. For 7 d prior to initiation of the study, steers were fed the diet without supplemental Cu, Mn, and Zn. On day 8 steers received a pulse dose (2 x NRC requirement) of Cu, Mn, and, Zn from sulfate (STM) or hydroxy trace minerals (HTM; Micronutrients LLC, USA). Ruminal samples were obtained at 2 h intervals until 24 h post-dosing for soluble (fraction obtained after centrifugation) Cu, Mn, and Zn concentrations. Binding strength of Cu, Mn, and Zn to ruminal solid digesta (post centrifugation) was estimated at 0, 12, and 24h post-dosing using dialysis against 0.05 M Tris-EDTA. Ruminal soluble mineral concentrations were greater (P &lt; 0.05) for Cu at 4, 6, 8, 10, 12, and 16 h; for Mn at 4 and 6 h; and for Zn at 4, 6, and 8 h post dosing in STM compared to HTM steers. Concentration of Cu, Mn, and Zn remaining in the insoluble fraction were greater (P &lt; 0.05) at 12 h post dosing in HTM vs STM supplemented steers. At 24 h post dosing, Mn concentrations were lesser (P &lt; 0.03) and Zn concentrations were greater (P &lt; 0.001) in HTM vs STM supplemented steers. Following dialysis, the % Cu, and Zn released from the insoluble fraction was greater (P &lt; 0.001) at 12 h and 24h in HTM vs. STM supplemented steers. Results indicate that a greater proportion of Cu and Zn HTM remained loosely bound to the insoluble fraction within the rumen.

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