Utilization of microbial selenium collected from the rumen of sheep

Ohgushi-Imamura, T.; Orden, Edgar A.; Fujihara, Tsutomu

doi:10.22358/jafs/65700/2014

Cited by 3 publications

(5 citation statements)

References 24 publications

(36 reference statements)

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“…The changes in VFAs concentrations in the ruminal fl uids might have been the result of an adjustment in the rumen due to the addition of different chemical forms of Se to the diet with CA and FO. These additives have a signifi cant impact on the type or species of microorganisms in the rumen [2,3,14,16,17,25,26]. This was shown by the change in microbiota yield which affected VFAs abundance and fi ber and protein digestion.…”

Section: Effects Of Different Chemical Forms Of Se On the Vfas Profi mentioning

confidence: 99%

“…Interestingly, Serra et al [4] showed that dietary Se-compounds change the ruminal production of volatile fatty acids (VFAs). In fact, numerous studies showed that Secompounds affect ruminal microorganism yield and activity of microbiota [1][2][3][4][5][6]. Thus, Se-compounds affect VFAs production and rumen microbial fermentation [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…The most common supplemental chemical forms of selenium (Se) for ruminants are selenite, selenate or selenized yeast (SeY) [1,2]. The chemical form of Se affects biosynthesis yield of Se-complexes and Se-proteins in ruminal microorganisms [3].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, we hypothesized that selenate or selenized yeast (SeY) added to the diet containing CA, FO and RO would modify concentrations of VFAs, methane, CO 2 …”

Section: Introductionmentioning

confidence: 99%

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The Influence of Different Chemical Forms of Selenium Added to the Diet Including Carnosic Acid, Fish Oil and Rapeseed Oil on the Formation of Volatile Fatty Acids and Methane in the Rumen, and Fatty Acid Profiles in the Rumen Content and Muscles of Lambs

et al. 2016

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Lambs were divided into 3 groups of 6 animals each. For 35 days lambs were fed a diet including 2% rapeseed oil, 1% fi sh oil and 0.1% carnosic acid (the control group) or two experimental diets supplemented with 0.35 mg • kg -1 Se as selenized-yeast (SeY) (the SeY diet) or selenate (the selenate diet). Muscles (Musculus longissimus dorsi (MLD) and Musculus biceps femoris (MBF)), ruminal fl uids and microbiota were collected from each lamb. SeY supplementation most effectively stimulated the accumulation of straightchain volatile fatty acids (VFAs), iso-branched-chain VFAs, CO 2 and CH 4 in the ruminal fl uid. The contents of CO 2 , CH 4 and VFAs including straight-chain VFAs with the exception of iso-branched-chain VFAs were most effectively reduced by the selenite diet. The control diet most effi ciently increased the concentration sums of odd-saturated fatty acids (odd-SFAs) and iso-SFAs in microbiota. The SeY diet most effi ciently reduced acetic acid to propionic acid ratio in the ruminal fl uid. The selenate diet improved animal performance by reducing ruminal concentrations of CH 4 and CO 2 . The SeY diet and especially the selenate diet reduced the biohydrogenation to C18:0 when compared with the control diet. The selenate diet more effi ciently reduced the concentration sums of all SFAs (SFAs) and all fatty acids (FAs) in MLD and MBF than the SeY diet, which most effectively increased the concentrations of SFAs and FAs in MLD and MBF. The selenate diet most effectively increased the body mass gain of lambs.Key words: carnosic acid, fatty acids, methane, ovine rumen, seleno-compounds, volatile fatty acids INTRODUCTIONThe most common supplemental chemical forms of selenium (Se) for ruminants are selenite, selenate or selenized yeast (SeY) [1,2]. The chemical form of Se affects Unauthenticated Download Date | 5/11/18 9:28 AM Acta Veterinaria-Beograd 2016, 66 (3), 373-391 374 biosynthesis yield of Se-complexes and Se-proteins in ruminal microorganisms [3]. Se-methionine (Se-Met) is more effi ciently accumulated in the animal body than inorganic forms of Se. Organic chemical forms of Se undergo less alteration in the rumen leading to less of insoluble chemical forms of Se [1]. Ruminal micro-organisms are capable to metabolize organic and inorganic forms of Se into Se-amino acids (Se-AA). The poor bioaccumulation of inorganic Se has been linked to the ruminal environment whereby selenate or selenite is reduced by microorganisms to insoluble and unavailable elemental Se, which is excreted in the feces [1,3]; selenate has higher relative bioavailability value than selenite. Ruminal microorganisms can reduce excessive doses of organic or inorganic forms of Se to selenides or unabsorbable Se o . Interestingly, Serra et al. [4] showed that dietary Se-compounds change the ruminal production of volatile fatty acids (VFAs). In fact, numerous studies showed that Secompounds affect ruminal microorganism yield and activity of microbiota [1][2][3][4][5][6]. Thus, Se-compounds affect VFAs production and rumen micro...

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Section: Effects Of Different Chemical Forms Of Se On the Vfas Profi mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Therefore, we hypothesized that selenate or selenized yeast (SeY) added to the diet containing CA, FO and RO would modify concentrations of VFAs, methane, CO 2 …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Influence of Different Chemical Forms of Selenium Added to the Diet Including Carnosic Acid, Fish Oil and Rapeseed Oil on the Formation of Volatile Fatty Acids and Methane in the Rumen, and Fatty Acid Profiles in the Rumen Content and Muscles of Lambs

et al. 2016

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“…Essential physiological roles of half of the Se-proteins are to maintain the appropriate metabolism of arachidonic acid (AA) and low levels of free-radicals within cells, so, reducing oxidative stress and peroxidative damage of lipids (Traulsen et al, 2004). Recent studies showed that diets with organic Se-compounds, like highly selenized yeast (SeY), or inorganic Se-compounds, like selenate (SeVI), change FA contents in animal tissues (Juniper et al, 2008;Czauderna et al, 2009Czauderna et al, , 2012aKrajewska et al, 2012;Ohgushi-Imamura et al, 2014;Rozbicka-Wieczorek et al, 2014. Moreover, carnosic acid (CA) can protect UFA in tissues from peroxidation damage (Hernández-Hernández et al, 2009;Jordan et al, 2013).…”

Section: Introductionmentioning

confidence: 99%