ABSTRACT: The effects of feeding a high level of organic selenium on the level of selenium, antioxidative status
of m. longissimus lumborum et thoracis (MLLT) and m. semimembranosus (MSM) and meat quality of pigs (defined
on malignant hyperthermia status, DNA based test) were investigated. Treatments consisted in supplementation
of organic selenium (0.3 mg Se/kg diet) for the last 97 days to finishing pigs (basic diet with 0.18 mg Se/kg diet)
before slaughter. MLLT was further examined for pH (45 min, 24 h), colour and conductivity (24 h), drip loss (48 h)
and myofibrillar fragmentation index (MFI, 5 days). Chemical composition (protein, intramuscular fat) was also
estimated. Concentration of Se (spectrofluorometric method) and antioxidative status (rate of oxidation by stimustimulation
with Fe2+/ascorbate, production of malondialdehyde – MDA) were estimated in muscle samples obtained
post mortem. The level of selenium was more than twice higher (P < 0.05) in muscles from pigs treated with higher
selenium than in controls (0.377 vs. 0.922 mg/kg – MLLT and 0.377 vs. 0.836 mg/kg – MSM). The rate of oxidation
was positively (P < 0.05) influenced by Se supplementation. Tendencies to lower drip losses were observed in MLLT
of pigs supplemented with Se but the differences were not significant (P > 0.05). We concluded that dietary organic
Se supplementation (0.3 mg Se/kg diet) to basic diet (0.18 mg Se/kg diet) of finishing pigs significantly increased
the selenium concentration and improved the antioxidative status of muscle tissue.
ABSTRACT: The effects of feeding a high level of organic selenium on the level of selenium, antioxidative statusof m. longissimus lumborum et thoracis (MLLT) and m. semimembranosus (MSM) and meat quality of pigs (definedon malignant hyperthermia status, DNA based test) were investigated. Treatments consisted in supplementationof organic selenium (0.3 mg Se/kg diet) for the last 97 days to finishing pigs (basic diet with 0.18 mg Se/kg diet)before slaughter. MLLT was further examined for pH (45 min, 24 h), colour and conductivity (24 h), drip loss (48 h)and myofibrillar fragmentation index (MFI, 5 days). Chemical composition (protein, intramuscular fat) was alsoestimated. Concentration of Se (spectrofluorometric method) and antioxidative status (rate of oxidation by stimustimulationwith Fe2+/ascorbate, production of malondialdehyde – MDA) were estimated in muscle samples obtainedpost mortem. The level of selenium was more than twice higher (P < 0.05) in muscles from pigs treated with higherselenium than in controls (0.377 vs. 0.922 mg/kg – MLLT and 0.377 vs. 0.836 mg/kg – MSM). The rate of oxidationwas positively (P < 0.05) influenced by Se supplementation. Tendencies to lower drip losses were observed in MLLTof pigs supplemented with Se but the differences were not significant (P > 0.05). We concluded that dietary organicSe supplementation (0.3 mg Se/kg diet) to basic diet (0.18 mg Se/kg diet) of finishing pigs significantly increasedthe selenium concentration and improved the antioxidative status of muscle tissue.
การแปล กรุณารอสักครู่..
