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RISS 인기검색어
- 검색키워드
- 저자 : Miklos Mezes (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Role of Glutathione Redox System on the T-2 Toxin Tolerance of Pheasant (Phasianus colchicus)
Fernye, Csaba,Ancsin, Zsolt,Bocsai, Andrea,Balogh, Krisztian,Mezes, Miklos,Erdelyi, Marta Korean Society of ToxicologyKorea Environmental Mu 2018 Toxicological Research Vol.34 No.3
The purpose of the present study was to evaluate the effects of different dietary concentrations of T-2 toxin on blood plasma protein content, lipid peroxidation and glutathione redox system of pheasant (Phasianus colchicus). A total of 320 one-day-old female pheasants were randomly assigned to four treatment groups fed with a diet contaminated with different concentrations of T-2 toxin (control, 4 mg/kg, 8 mg/kg and 16 mg/kg). Birds were sacrificed at early (12, 24 and 72 hr) and late (1, 2 and 3 weeks) stages of the experiment to demonstrate the effect of T-2 toxin on lipid peroxidation and glutathione redox status in different tissues. Feed refusal and impaired growth were observed with dose dependent manner. Lipid-peroxidation was not induced in the liver, while the glutathione redox system was activated partly in the liver, but primarily in the blood plasma. Glutathione peroxidase activity has changed parallel with reduced glutathione concentration in all tissues. Based on our results, pheasants seem to have higher tolerance to T-2 toxin than other avian species, and glutathione redox system might contribute in some extent to this higher tolerance, in particular against free-radical mediated oxidative damage of tissues, such as liver.
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Orosz, Szilvia,Husveth, Ferenc,Vetesi, Margit,Kiss, Laszlo,Mezes, Miklos Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.7
The effects of barley and oat feeding in table duck were investigated. During a 49-day growing period a corn-based diet was supplemented by 45% barley and 45% oats (isonitrogenously and iso-energetically), respectively. Daily feed intake, FCR-, and weight gain were measured. Abdominal fat, liver, and gizzard weights were determined and dry matter, protein, fat content and fatty acid composition of femoro-tibial muscles and liver fat were measured on the $35^{th}$, $42^{nd}$ and $49^{th}$ days of age. Feeding 45% barley caused a decrease of growth rate ($p{\leq}0.05$) during the first 4 weeks, which was followed by a rapid, compensatory growth from the $6^{th}$ week of age ($p{\leq}0.05$). Both barley and oat supplementation increased protein ($p{\leq}0.05$), while decreasing fat ($p{\leq}0.05$) and dry matter ($p{\leq}0.05$) content of the liver. Feeding of 45% oats in the diet decreased the monounsaturated fatty acid ($p{\leq}0,05$) and increased the n-6 ($p{\leq}0,05$), n-3 ($p{\leq}0,05$) and total polyunsaturated ($p{\leq}0,05$) fatty acid content of the intramuscular fat owing to the high proportion of soluble non-starch polysaccharides (NSP) in the diet. This might be explained by the more pronounced decrease in digestibility of saturated than unsaturated fatty acids in birds fed a soluble NSP-enriched diet. This result might be caused by the "cage effect" of soluble NSP trapping the bile salts which are more important for the absorption of saturated than polyunsaturated fatty acids.
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Role of Glutathione Redox System on the T-2 Toxin Tolerance of Pheasant (Phasianus colchicus)
Csaba Fernye,Zsolt Ancsin,Andrea Bocsai,Krisztian Balogh,Miklos Mezes,Marta Erdelyi 한국독성학회 2018 Toxicological Research Vol.34 No.3
The purpose of the present study was to evaluate the effects of different dietary concentrations of T-2 toxin on blood plasma protein content, lipid peroxidation and glutathione redox system of pheasant (Phasianus colchicus). A total of 320 one-day-old female pheasants were randomly assigned to four treatment groups fed with a diet contaminated with different concentrations of T-2 toxin (control, 4 ㎎/㎏, 8 ㎎/㎏ and 16 ㎎/㎏). Birds were sacrificed at early (12, 24 and 72 hr) and late (1, 2 and 3 weeks) stages of the experiment to demonstrate the effect of T-2 toxin on lipid peroxidation and glutathione redox status in different tissues. Feed refusal and impaired growth were observed with dose dependent manner. Lipid-peroxidation was not induced in the liver, while the glutathione redox system was activated partly in the liver, but primarily in the blood plasma. Glutathione peroxidase activity has changed parallel with reduced glutathione concentration in all tissues. Based on our results, pheasants seem to have higher tolerance to T-2 toxin than other avian species, and glutathione redox system might contribute in some extent to this higher tolerance, in particular against free-radical mediated oxidative damage of tissues, such as liver.
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