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.: Home > Animal Science Papers and Reports > 2008 > Volume 26 Number 1 > Katarzyna Korniluk1, Miros³aw Gabryszuk2, Jan Kowalczyk1, Marian Czauderna1*

Effect of diet supplementation with selenium, zinc and ل-tocopherol on fatty acid composition in the liver and loin muscle of lambs

Katarzyna Korniluk1, Miros³aw Gabryszuk2, Jan Kowalczyk1, Marian Czauderna1*
1 Polish Academy of Sciences The Kielanowski Institute of Animal Physiology and Nutrition, Jab³onna, 05-110 Jab³onna, Poland 2 Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzêbiec, 05-552 Wَlka Kosowska, Poland
Abstract :

The effect was investigated of dietary selenate, ZnSO4, and ل-tocopherol on fatty acid (FA) profile
in the liver and longissimus dorsi (LD) muscle of 40 Polish Merino ram-lambs divided into the
control (C) and experimental (E) group of 22 and 18 animals, respectively. Until week 8 of age all
the lambs were maintained with their dams, then weaned, placed in individual straw-bedded pens
and fattened individually with a pelleted concentrate mix. The mix was offered ad libitum until the
animals mean body weight reached 31.8 kg. During fattening period the lambs from group E were
administered per os 1 ml 0.1% Na2SeO4, 3 ml 10% ZnSO4 and 60 mg ل-tocopherol daily.
The treatment in group E (basal diet plus three additives) led to the significantly increased
concentration of cis9trans11CLA and the sum of CLA isomers in the liver as well as to increase
of the liver concentration of long-chain polyunsaturated fatty acids (LPUFA) and long-chain
PUFAn-3 (LPUFAn-3). Selenate, ل-tocopherol and Zn reduced the oxidation of unsaturated fatty
acids, especially LPUFA in the liver. The additives resulted in weaker stimulation of accumulation
of these FAs in the loin compared with the liver. Dosed selenate, ZnSO4 and ل-tocopherol reduced
the ruminal biohydrogenation of t11C18:1 and other unsaturated FAs to FAs containing less double

Keywords :
ل-tocopherol / fatty acids / lambs / liver / loin /selenium / zinc

Date Deposited : 06 Aug 2011 11:01

Last Modified : 06 Aug 2011 11:01

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Volume 26, Number 1, - 2008

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