Evaluation of mannanoligosacharides as a substitute for antibiotic growth promoters in pig fattening
Bobcek, B.(Slovenska polnohospodarska univ. v Nitre (Slovak Republic). | Mrazova, J. | Bobcek, R. | Lahucky, R.
The objective of the study was to detect the impact of mannanoligosaccharides in form of Biomos supplement to feed mixture for pigs on production traits, physical and chemical properties and antioxidative status of muscles m. longissimus thoracis (MLT) and m. semimem-branosus (MSM) in hybrid pigs. Preparation Biomos (in the dose 1 kg.t/1) was added to standard feed mixtures OS-3 and OS-6 during 97 days of fattening. After killing were studied physical and chemical properties (pH1, pH sub(24) electric conductivity E sub(1), E sub(2), drip losses during 24 hours and free water during 24-48 hours post mortem), content of intramuscular fat (apparatus Analyzier 1265, firm Infratec), and antioxidative status of meat (content of malondialdehyde in homogenate of muscles was determined after reaction with tiobarbiturate acid and after stimulation of oxidation by 30-minute incubation in Fe sup(2+)/ascorbate). Feeding Biomos to pigs influenced positively production parameters (drip losses and backfat depth) and physical and chemical properties (pH value and electric conductivity). Application of Biomos decreased significantly contents of malondialdehyde in muscles (in MLT to 2.739 mg and in MSM to 5.178 mg/1) and improved the antioxidative status in meat.
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