Svoboda M., R. Ficek, J. Drábek: Efficacy of Organic Selenium from Se-Enriched Yeast on Selenium Transfer from Sows to Piglets. Acta Vet. Brno 2008, 77: 515-521.The aim of the trial was to determine the efficacy of organic Se from Se-enriched yeast in placental transfer to piglets in the conditions of a Czech pig farm. In group I (n = 8) the sows were fed during gestation and lactation a diet supplemented with inorganic Se (sodium selenite, 0.3 mg/kg of Se for the gestation and 0.38 mg/kg of Se for the lactation diet). In group II (n = 8) the diet of the sows was supplemented with organic Se from Se-enriched yeast (0.3 mg/kg of Se for the gestation and 0.38 mg/kg of Se for the lactation diet). Se concentrations in the whole blood, colostrum and milk were higher (P < 0.01) in the group of sows fed with the organic Se form. No differences in GSH-Px activities in the whole blood were found between the two groups of sows. The concentrations of Se in piglet tissues (heart P < 0.05, liver P > 0.01, muscle P > 0.01) were also higher when the organic form was provided. It is concluded that the use of the organic Se from Se-enriched yeast in sows resulted in greater transfer of Se to their progeny, however it did not have a positive effect on the antioxidant system of the organism.

The aim of this study was to evaluate the effect of organic Se from Se-enriched alga (Chlorella spp.) and Se from Se-enriched yeast on concentrations of Se in serum and tissues, and serum GSH-Px activities and carcass characteristics in finishing pigs.The pigs were on experimental diets for a period of 3 months before slaughter with different Se supplements at the concentration of 0.3 mg Se per kg of feed. In group I (n = 12) the feed was supplemented with inorganic sodium selenite; in group II (n = 12) with organic Se from Se-enriched yeast; in group III (n = 12) with organic Se from Se-enriched alga, Chlorella spp. and pigs in group IV (n = 11) received a non-supplemented basal diet. The organic Se sources did not differ in serum Se and serum GSH-Px activities. Significantly higher Se concentrations in muscle (P < 0.01) and in the heart (P < 0.01) were found when Se from Se-enriched yeast was given, compared to the group of pigs that received Se from Se-enriched alga Chlorella spp. The Se content in livers and ovaries did not differ between the two organic Se sources. The use of both organic Se forms resulted in a higher accumulation in muscle tissue compared to the inorganic Se form. No differences in meat quality characteristics were found among the experimental groups. It is concluded that Se from Se-enriched alga, Chlorella spp. had a lower accumulation in muscle tissue than Se from Se-enriched yeast, and it did not affect meat quality.Glutathion peroxidase, GSH-Px, pork, meat quality, sodium selenite

The study was conducted to determine the efficacy of organic Se from Se-enriched alga Chlorella spp. in placental transfer to piglets. In group A (n = 8) the sows were fed during the gestation a diet supplemented with inorganic Se (sodium selenite, 0.3 mg/kg). In group B (n = 8) the diet of the sows was supplemented with organic Se from Se-enriched alga (0.3 mg/kg). The Se concentrations in the whole blood (P < 0.05) and in colostrums (P < 0.05) were higher in the group of sows provided with the organic Se form. No differences in GSH-Px activities were found between the two groups. The concentrations of Se in piglet tissues were also higher when the organic form was provided. It is concluded that the use of the organic Se from Se-enriched alga Chlorella spp. in sows resulted in greater transfer of Se to their progeny.

The aim of this study was to evaluate efficiency of elemental iron preparation in the form of carbonyl iron in prevention of iron deficiency in piglets. The piglets in group I (n = 14) were given 210 mg of carbonyl iron orally at the age of 3 days. The piglets in group II (n = 15) received 210 mg of carbonyl iron orally on days 3 and 9. In group III (n = 14) the piglets were injected i.m. with 200 mg Fe 3+ as iron dextran. Fourteen days after birth, haemoglobin concentration in group I started to decrease and the piglets developed anaemia. In group II, at the age of 28 days, Hb dropped below 80 g/l and the piglets developed anaemia. Under conditions of this trial, the oral administration of carbonyl iron did not prevent development of iron deficiency in piglets. , haemoglobin, packed cell volume, neonatal period, iron dextran, oral administration Anaemia

ABSTRACT:The aim of this study was to investigate an antibody response to tetanus toxoid in iron-deficient piglets. Ten piglets were not given any iron preparation until the age of 21 days. Ten piglets were given 200 mg Fe 3+ dextran intramuscularly at the age of 3 days. All piglets were immunized with tetanus toxoid 14 days after birth. Reimmunization was performed 21 days after the first immunization. IgM and IgG titres were measured in weekly intervals after immunization. Haematological indices and iron concentration in the blood plasma of irondeficient piglets characterized iron deficiency. The dynamic changes in IgM and IgG response to tetanus toxoid were similar in iron-deficient and iron-supplemented piglets and no significant differences in titres between the two groups were found in any period of the trial.