IMPORTANCE OF FOLIC ACID ADMINISTERED DURING GESTATION ON HEMATOLOGICAL STATUS OF PIGLETS
In a group of 88 litters (group A), 252 piglets were chosen to measure the effect of folic acid during gestation on hemoglobin (Hb), hematocrit (Ht) and liveweight of piglets at birth, 7 and 14 d after birth. Forty-three dams received 10 intramuscular injections of folic acid during gestation; 45 received no supplemental folic acid in addition to what was present in the diet. Results showed that supplemental folic acid during gestation counteracted the magnitude of the decrease in Hb [Formula: see text] and Ht [Formula: see text] during the first week after birth and tended to increase [Formula: see text] the liveweight of piglets during the second week after parturition. In an second group (group B), 131 piglets from 45 litters were used to measure the effect of folic acid supplementation during gestation on serum iron at 4 and 11 d of age. Twenty-one dams were treated with folic acid and 24 received no supplemental folic acid during gestation. Two weeks after birth, piglets liveweight tended to decrease [Formula: see text] when folic acid was administered to dams during gestation. Serum iron concentrations were similar between treatments at 4 d of age but tended to be slightly higher [Formula: see text] 11 d after birth in piglets from sows injected with folic acid during gestation. Because of the conflicting results, on growth rate, the interpretation of the effect of folic acid during gestation on piglets growth remains ambiguous. However, folic acid administration during gestation did not affect iron body reserves of newborn piglets. Key words: Sow, folic acid, gestation, anemia, piglets