Magnesium

McDowell, L. R.

doi:10.1016/b978-0-444-51367-0.50008-8

Cited by 60 publications

(77 citation statements)

References 34 publications

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“…Magnesium absorption in ruminants depends on their age and on the feeding system. In ruminants, the majority of magnesium is absorbed in the reticulorumen part of the digestive tract; the absorption rate in adult ruminants is from 5% to 30% (21). Furthermore, McDowell (21) showed that availability values for magnesium as high as 70% have been reported in young milk-fed calves, which decreased to 30% to 50% in older calves.…”

Section: Discussionmentioning

confidence: 99%

The effect of live Saccharomyces cerevisiae yeast in the diet of rams on the digestibility of nutrients, nitrogen and mineral retention, and blood serum biochemical parameters

Kowalik¹,

Skomiał²,

Miltko³

et al. 2016

Turk J Vet Anim Sci

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Section: Discussionmentioning

confidence: 99%

The effect of live Saccharomyces cerevisiae yeast in the diet of rams on the digestibility of nutrients, nitrogen and mineral retention, and blood serum biochemical parameters

Kowalik¹,

Skomiał²,

Miltko³

et al. 2016

Turk J Vet Anim Sci

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“…Selenium is a semi-metal that can exist in several oxidation conditions. McDowel (1992) discovered the selenium function in animal nutrition when the author observed that selenium supplementation avoided liver necrosis in rats. After this finding, the prevention of muscular dystrophy was reported when bovine and sheep were supplemented with selenium.…”

Section: Introductionmentioning

confidence: 99%

Effects of Copper and Selenium Supplementation on Performance and Lipid Metabolism in Confined Brangus Bulls

Netto

Zanetti

Claro

et al. 2014

Asian Australas. J. Anim. Sci

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Twenty-eight Brangus cattle were used to determine the effect of copper and selenium supplementation on performance, feed efficiency, composition of fatty acids in Longissimus dorsi (LD) muscle, and cholesterol concentration in serum and in LD muscle and enzymes activities, reduced glutathione (GSH) and oxidized glutathione (GSSG). The treatments were: i) Control, without copper (Cu) and selenium (Se) supplementation; ii) Se, 2 mg Se/kg of dry matter such as sodium selenite; iii) Cu, 40 mg Cu/kg of dry matter such as copper sulfate; iv) Se/Cu, 2 mg Se/kg of dry matter such as sodium selenite and 40 mg Cu/kg of dry matter such as copper sulfate. LD muscle fatty acid composition was not influenced by the treatments (p>0.05). The serum concentration of cholesterol was not influenced by the treatments (p>0.05), however, the concentration of cholesterol in LD was lower in cattle supplemented with copper and selenium (p<0.05). Oxidized glutathione and reduced glutathione increased (p<0.05) with Cu, Se and Se/Cu supplementation. The supplementation of copper (40 mg/kg DM) and selenium (2 mg/kg DM) altered the metabolism of lipids in confined Brangus cattle, through a decrease in cholesterol deposition in the LD, possibly by changing the ratio between reduced glutathione/oxidized glutathione. Copper and selenium supplementation improved animal performance and feed efficiency (p<0.05) when compared to the control group, providing advantages in the production system, while also benefiting consumers by reducing cholesterol concentration in the meat.

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“…Based on XRF imaging alone it is impossible to deduce what species are giving rise to this consistent signal, but likely candidates based on the literature include: CuZn-SOD; GATA proteins including GATA-4 and GATA-6; early growth response factor (EGR-1); RUSH; and gonadotropin-inducible transcription factor 1 (GIOT1) (Suzuki et al, 1999; Laitinen et al, 2000; Rendon et al, 2000; Mizutani et al, 2001; McDowell 2003; Valdez et al, 2005; Virgone et al, 2012). CuZn-SOD expression in both the theca interna and the granulosa cell layer suggests this protein is closely correlated with steroidogenesis in the human ovary and may play an important antioxidant role (Suzuki et al, 1999; Valdez et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

“…EGR-1 is an inducible zinc finger transcription factor that binds specific GC-rich enhancer elements and impacts female reproduction. Russell et al showed that follicle stimulating hormone rapidly induces the zinc finger encoding gene EGR-1 in the granulosa cells of small growing follicles in rats and may mediate molecular programs of proliferation and/or differentiation during follicle growth, ovulation, and luteinization (McDowell, 2003). Their immunohistochemical analyses also showed gonadotropin-induced EGR-1 in thecal cells.…”

Section: Resultsmentioning

confidence: 99%

Localization of the Trace Elements Iron, Zinc and Selenium in Relation to Anatomical Structures in Bovine Ovaries by X-Ray Fluorescence Imaging

et al. 2015

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X-ray fluorescence (XRF) was used to image 40 histological cross-sections of bovine ovaries (n=19), focusing on structures including: antral follicles at different stages of growth or atresia, corpora lutea at three stages of development (II-IV), and capillaries, arterioles, and other blood vessels. This method identified three key trace elements [iron (Fe), zinc (Zn), and selenium (Se)] within the ovarian tissue which appeared to be localized to specific structures. Owing to minimal preprocessing of the ovaries, important high-resolution information regarding the spatial distribution of these elements was obtained with elemental trends and colocalizations of Fe and Zn apparent, as well as the infrequent appearance of Se surrounding the antrum of large follicles, as previously reported. The ability to use synchrotron radiation to measure trace element distributions in bovine ovaries at such high resolution and over such large areas could have a significant impact on understanding the mechanisms of ovarian development. This research is intended to form a baseline study of healthy ovaries which can later be extended to disease states, thereby improving our current understanding of infertility and endocrine diseases involving the ovary.

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Magnesium

Cited by 60 publications

References 34 publications

The effect of live Saccharomyces cerevisiae yeast in the diet of rams on the digestibility of nutrients, nitrogen and mineral retention, and blood serum biochemical parameters

The effect of live Saccharomyces cerevisiae yeast in the diet of rams on the digestibility of nutrients, nitrogen and mineral retention, and blood serum biochemical parameters

Effects of Copper and Selenium Supplementation on Performance and Lipid Metabolism in Confined Brangus Bulls

Localization of the Trace Elements Iron, Zinc and Selenium in Relation to Anatomical Structures in Bovine Ovaries by X-Ray Fluorescence Imaging

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