The main task in intensive pig production is animal welfare, particularly the preservation of their physiological function, homeostasis and homeorhesis and lactation, where the level of glucose, calcium and phosphorus in blood plays an important role in protecting the physiological status. This research has been carried out on a modern farm, of closed type in Zitoradja, in order to show the level of glucose, calcium and phosphorus in the blood serum of the first farrowing gilts and sows during pregnancy and post partum. In investigation, 30 pregnant gilts took part from insemination to partus. Blood was taken from the jugular vein on the thirtieth day after insemination, ten days before farrowing, one day after farrowing, and seven days after farrowing. The concentration of glucose in the blood serum of gilts with normal lactation was significantly higher ten days before farrowing (4.62 mmol/l) and on the first (4.92 mmol/l) and seventh day after farrowing (4.94 mmol/l) in relation to the concentration of glucose on the thirtieth day prior to farrowing (4.12 mmol/l), but this increase could not be found in gilts with disorders of lactation. The concentration of calcium before of partus (2.16 mmol/l) and post partum (2.55 mmol/l), in sows with normal lactation, showed a significant difference compared to the calcium concentration at the beginning of pregnancy (p <0.05) and in gilts with disturbed lactation. Phosphorus concentration showed no significant difference in gilts with normal and disturbed lactation (2.26 : 2.25 mmol/l).

In the period from January 2001 to December 2005, a total of 6,904 slaughtered cattle originating from the territory of the region of Jablanica were examined at the Mesokombinat AD abattoir. The Trematoda Fasciola hepatica was found in 429 cattle (6.21%). A total of 2,150 kg livers were condemned due to the presence of the liver fluke. A comparison of cattle with bovine fasciolosis according to the years yielded a very significant difference (p<0.01) between the year 2003 (10.02) and the year 2002 (9.97), on the one side, in comparison with the years 2001 (5.14), 2004 (3.37), and 2005 (5.08), on the other side. A significant difference (p<0.05) was also established in the year 2004 (3.37) in comparison with the years 2001 (5.14) and 2005 (5.08). After analyzing the significance of the differences between the infected cattle according to the seasons, a very significant difference (p<0.01) was established between the summer (7.23) and the winter (4.74) periods. A significant difference (p<0.05) was also established between the autumn (6.49) and the winter periods. The amount of precipitation was directly proportionate to the percentage of cattle infected with fasciolosis

After the EU had decided to ban antibiotics as feed additives, from 1 st January 2006, onwards, many experiments were taken to establish other substances with beneficial effect on animals via modification of the gut microflora. Probiotics are one of the most used group of feed additives, so called "alternatives to antibiotics", with prebiotics, organic acids and essential oils. Therefore, the aim of this investigation was to evaluate the effect of probiotic FARM PACK Y on the health status and performance of sows and their litters. The trial was taken at an industrial pig farm, on 30 sows and 329 suckling piglets from their litters. The animals were allocated into three groups, according to the different concentration of probiotic: C group was fed without the probiotic supplementation, O 1 group with 0,1% probiotic and O 2 with 0,2% probiotic in the balanced creep feed. This probiotic supplementation started at 100 th day of gestation in sows, and terminated at weaning, at 28 th day post partum. Piglets of O 1 and O 2 group were fed with probiotic administered in prestarter, from 5 th day of birth, till weaning. The results of this trial showed that morbidity and mortality decreased in probiotic groups of piglets.