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You searched for subject:(trace mineral complex). Showing records 1 – 3 of 3 total matches.

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Colorado State University

1. Tibbetts, Gary K. Selected factors that influence profitability of feedlot cattle.

Degree: PhD, Animal Sciences, 2010, Colorado State University

For the primary emphasis of this dissertation, twenty-three ranches were selected from ranch cooperators in a large scale Nebraska-based cattle system to establish baseline measurements for liver concentrations of trace minerals, disease titers, parasite load, percent morbidity and gain performance. Upon arrival at the feedlot blood, liver, and fecal samples were collected from approximately 10% of each ranch group. After all yr 1 cattle were harvested an 11 ranch subset of the original 23 ranches was selected based on ranch weaning practice for a second yr survey. In yr 2 all ranches shipped calves to the feedlot on the day of weaning and all fed a standardized free choice mineral containing organic trace mineral complexes (OTM) to cow calf pairs 45 d prior to weaning. Comparing yr 1 and 2 for the 1 ranches, percent 1st pulls decreased from yr 1 to yr 2. Carcass quality was decreased from yr 1 to yr 2. Liver Cu concentrations of calves at weaning increased from yr 1 to a yr 2 and Zn and Mn liver concentrations were similar across years. Across both years, higher liver Cu concentration was correlated with decreasing total pulls and increasing ADG and mortality tended to decrease as Cu concentration increased. Higher liver Mn concentrations tended to be correlated with lower total pulls. There was no correlation between liver Zn concentration and animal and health performance. In conclusion, allowing cow-calf pairs access to free-choice mineral containing OTM prior to weaning improved some aspects of feedlot health and performance. For a second paper feedlot performance records from the U.S. Meat Animal Research Center feedlot for 1993 through 2000, were analyzed to evaluate the impact of footrot on ADG and total days on feed. Records from the original pool of 36,755 bull, steer and heifer calves were sorted so that only steers that had a single footrot incidence and those with no other morbidities were included in the data set (7,100 steers). To roughly pattern these data to industry production practices, time of footrot insult during feeding was divided into three production periods; starting (0-60 d), growing (61-120 d) and finishing (121d - harvest). Records were evaluated to determine which limb was more likely to be affected with footrot. A total of 459 (6.5%) steers were treated for a single footrot incident. ADG for cattle experiencing a single footrot incident was decreased compared to non effected cattle. The production period of footrot onset impacted both ADG and total days on feed. Mean days on feed for the non-affected cattle was 262 d while mean days on feed for footrot affected cattle was 267 d (P<0.01). The impact of footrot on days on feed for the starting, growing and finishing periods was -9.9 d, +2.2 d and +14.3 d. Advisors/Committee Members: Whittier, Jack C. (advisor), Engle, Terry E. (advisor), Field, Thomas G. (committee member), Mortimer, Robert George (committee member).

Subjects/Keywords: weaning; beef cattle; trace mineral; footrot; feedlot health; trace mineral complex; Trace elements in animal nutrition; Beef cattle  – Nutrition; Feedlots  – Health aspects; Beef cattle  – Health; Calves  – Nutrition

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APA (6th Edition):

Tibbetts, G. K. (2010). Selected factors that influence profitability of feedlot cattle. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/39053

Chicago Manual of Style (16th Edition):

Tibbetts, Gary K. “Selected factors that influence profitability of feedlot cattle.” 2010. Doctoral Dissertation, Colorado State University. Accessed May 09, 2021. http://hdl.handle.net/10217/39053.

MLA Handbook (7th Edition):

Tibbetts, Gary K. “Selected factors that influence profitability of feedlot cattle.” 2010. Web. 09 May 2021.

Vancouver:

Tibbetts GK. Selected factors that influence profitability of feedlot cattle. [Internet] [Doctoral dissertation]. Colorado State University; 2010. [cited 2021 May 09]. Available from: http://hdl.handle.net/10217/39053.

Council of Science Editors:

Tibbetts GK. Selected factors that influence profitability of feedlot cattle. [Doctoral Dissertation]. Colorado State University; 2010. Available from: http://hdl.handle.net/10217/39053


Queensland University of Technology

2. Hansen, James W. L. The petrology, geochemistry and petrogenesis of the Goomboorian intrusive complex, southeast Queensland.

Degree: 1997, Queensland University of Technology

Subjects/Keywords: Intrusions (Geology) Queensland Goomboorian mountains; Petrology Queensland Goomboorian Mountains; Petrogenesis Queensland Goomboorian Mountains; Geochemistry Queensland Goomboorian Mountains; Goomboorian Intrusive Complex; Kin Kin beds; Gympie province; middle Triassic; calc-alkalic; tholeiitic; reverse zoning; M-type intrusives; gabbro; diorite; mafic inclusions; cumulates; petrology; mineral chemistry; geochemistry; geobarometry; geothermometry; gravity studies; gravity modelling; petrogenic modelling; P-T relationships; phase relationships; magmatic evolution; intracrustal; mantle wedge; fractional crystallisation; hydrothermal alteration; emplacement mechanisms; mantle source; depleted mantle; trace element enrichment; thesis; masters

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hansen, J. W. L. (1997). The petrology, geochemistry and petrogenesis of the Goomboorian intrusive complex, southeast Queensland. (Thesis). Queensland University of Technology. Retrieved from http://eprints.qut.edu.au/36962/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Hansen, James W L. “The petrology, geochemistry and petrogenesis of the Goomboorian intrusive complex, southeast Queensland.” 1997. Thesis, Queensland University of Technology. Accessed May 09, 2021. http://eprints.qut.edu.au/36962/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Hansen, James W L. “The petrology, geochemistry and petrogenesis of the Goomboorian intrusive complex, southeast Queensland.” 1997. Web. 09 May 2021.

Vancouver:

Hansen JWL. The petrology, geochemistry and petrogenesis of the Goomboorian intrusive complex, southeast Queensland. [Internet] [Thesis]. Queensland University of Technology; 1997. [cited 2021 May 09]. Available from: http://eprints.qut.edu.au/36962/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hansen JWL. The petrology, geochemistry and petrogenesis of the Goomboorian intrusive complex, southeast Queensland. [Thesis]. Queensland University of Technology; 1997. Available from: http://eprints.qut.edu.au/36962/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Queensland University of Technology

3. Tang, Eng Hoo Joseph. The Petrogenesis Of The Station Creek Igneous Complex And Associated Volcanics, Northern New England Orogen.

Degree: 2004, Queensland University of Technology

The Station Creek Igneous Complex (SCIC) is one of the largest Middle-Late Triassic plutonic bodies in the northern New England Orogen of Eastern Australia. The igneous complex comprises of five plutons - the Woonga Granodiorite (237 Ma), Woolooga Granodiorite (234 Ma), Rush Creek Granodiorites (231 Ma) and Gibraltar Quartz Monzodiorite and Mount Mucki Diorite (227 Ma respectively), emplaced as high-level or epizonal bodies within the Devonian-Carboniferous subduction complex that resulted from a westward subduction along the east Australian margin. Composition of the SCIC ranges from monzogabbro to monzogranite, and includes diorite, monzodiorite, quartz monzodiorite and granodiorite. The SCIC has the typical I-type granitoid mineralogy, geochemistry and isotopic compositions. Its geochemistry is characteristics of continental arc magma, and has a depleted-upper mantle signature with up to 14 wt% supracrustal components (87Sr/86Srinitial = 0.70312 to 0.70391; Nd = +1.35 to +4.9; high CaO, Sr, MgO; and low Ni, Cr, Ba, Rb, Zr, Nb, Ga and Y). The SCIC (SiO2 47%-76%) has similar Nd and Sr isotopic values to island-arc and continentalised island-arc basalts, which suggests major involvement of upper mantle sourced melts in its petrogenesis. SCIC comprises of two geochemical groups - the Woolooga-Rush Greek Granodiorite group (W-RC) and the Mount Mucki Diorite-Gibraltar Quartz Monzodiorite group (MMD-GQM). The W-RC Group is high-potassium, calc-alkalic and metaluminous, whereas the MMD-GQM Group is medium to high potassium, transitional calc-alkalic to tholeiitic and metaluminous. The two geochemical groups of the SCIC magmas are generated from at least two distinct sources - an isotopically evolved Neoproterozoic mantle-derived source with greater supracrustal component (10-14 wt%), and an isotopically primitive mafic source with upper mantle affinity. Petrogenetic modeling using both major and trace elements established that the variations within respective geochemical group resulted from fractional crystallisation of clinopyroxene, amphibole and plagioclase from mafic magma, and late fractionation of alkalic and albitic plagioclase in the more evolved magma. Volcanic rocks associated with SCIC are the North Arm Volcanics (232 Ma), and the Neara Volcanics (241-242 Ma) of the Toogoolawah Group. The major and trace element geochemistry of the North Arm Volcanics is similar to the SCIC, suggesting possible co-magmatic relationship between the SCIC and the volcanic rock. The age of the North Arm Volcanics matches the age of the fractionated Rush Creek Granodiorite, and xenoliths of the pluton are found within epiclastic flows of the volcanic unit. The Neara Volcanics (87Sr/86Sr= 0.70152-0.70330, 143Nd/144Nd = 0.51253-0.51259) differs isotopically from the SCIC, indicating a source region within the HIMU mantle reservoir (commonly associated with contaminated upper mantle by altered oceanic crust). The Neara Volcanics is not co-magmatic to the SCIC and is derived from partial melting upper-mantle with additional…

Subjects/Keywords: Petrogenesis; petrography; geology; Station Creek Igneous Complex; Mount Mucki Diorite; Gibraltar Quartz Monzodiorite; Woolooga Granodiorite; Rush Creek Granodiorite; Woonga Granodiorite; Wratten Igneous Suite; andesitic volcanics; Highbury Volcanics; Neara Volcanics; North Arm Volcanics; evolution of magma; geochemistry; stable isotopes; radiogenic isotopes; trace elements; modelling; fractional crystallisation; differentiation; mineral chemistry; geothermometry; geobarometry; emplacement conditions; mantle and lithospheric mantle sources; mantle melting; mafic underplating; continental margin; calc-alkalic; crustal assimilation; magma evolution; 39Ar/40Ar dating; tectonic classification

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Tang, E. H. J. (2004). The Petrogenesis Of The Station Creek Igneous Complex And Associated Volcanics, Northern New England Orogen. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/15902/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Tang, Eng Hoo Joseph. “The Petrogenesis Of The Station Creek Igneous Complex And Associated Volcanics, Northern New England Orogen.” 2004. Thesis, Queensland University of Technology. Accessed May 09, 2021. https://eprints.qut.edu.au/15902/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Tang, Eng Hoo Joseph. “The Petrogenesis Of The Station Creek Igneous Complex And Associated Volcanics, Northern New England Orogen.” 2004. Web. 09 May 2021.

Vancouver:

Tang EHJ. The Petrogenesis Of The Station Creek Igneous Complex And Associated Volcanics, Northern New England Orogen. [Internet] [Thesis]. Queensland University of Technology; 2004. [cited 2021 May 09]. Available from: https://eprints.qut.edu.au/15902/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tang EHJ. The Petrogenesis Of The Station Creek Igneous Complex And Associated Volcanics, Northern New England Orogen. [Thesis]. Queensland University of Technology; 2004. Available from: https://eprints.qut.edu.au/15902/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.