Selenium content and antioxidant status in tissues of veal calves fed a diet supplemented with selenium yeast
2006
Marounek, M.,Research Institute of Animal Production, Prague (Czech Republic) | Skřivanová, E.,Research Institute of Animal Production, Prague (Czech Republic) | Skřivanová, V.,Research Institute of Animal Production, Prague (Czech Republic)
Two groups of 6 calves each were fed a milk replacer and a starter concentrate for 125 days. Control diet contained 0.13 mg selenium (Se) per kg of feed dry matter, on average. Experimental diet was supplemented with Se-enriched yeast to increase Se concentration to 0.50 mg/kg. Weight gain, feed intake, chemical composition of meat (m. longissimus thoracis et lumborum) and meat colour were not affected by Se supplementation (P less than 0.05). Feeding Se-yeast resulted in two-fold higher (P less than 0.05) concentration of Se in meat (0.69 mg/kg), faeces (2.13 mg/kg) and hair (3.09 mg/kg). Hepatic and renal concentrations of Se were non-significantly increased by 19.1 and 5.6 percent, respectively. Glutathione peroxidase activity was significantly increased in the liver tissue of Se-supplemented calves, but not in the muscle. No treatment effect on catalase activity was observed. In meat of treated animals the formation of thiobarbituric acid-reactive substances was non-significantly reduced. It can be concluded on basis of these results that the enrichment of meat with Se is the main benefit of Se supplementation of diets of veal calves.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Technical University in Zvolen