engleski

Effect of suplementation with yeast fermentation product on hematological parameters in growing to finishing pigs

Fermented feed products have been investigated to reduce the use of antibiotic growth promoters and decrease feed price in swine production. Fermentation product contains amino acids, nucleotides, minerals, and other bioactive compounds which have an enzymatic effect on plant cell wall non-starch polysaccharides, resulting in increased availability of cytoplasm plant cell protein, starch and fat. The aim of this study was to determine influence of fermentation product of selected Aspergillus spp. strains on hematological parameters of swine. A total of 80 growing- finishing crossbreed pigs were used for the feeding trial. Pigs were randomly assigned to one of two dietary treatments with 40 pigs per treatment in two pens. Control group (initial body weight ; BW 32.09 kg) was fed a corn-soybean meal. The diet for experimental group (initial BW 31.13 kg) containing 0.5% dry yeast fermentation product (YFP) and soybean meal was reduced by 2%. Blood was collected at slaughterhouse and total number of blood cells, hemoglobin concentration and hematocrit values were determined by hematology analyzer using veterinary software. Differential leukocyte counts were determined from blood smears stained by the Pappenheim method. All parameters determined in present study were within reference range. Mean corpuscular volume was significantly higher and mean corpuscular haemoglobin concentration was significantly lower in group fed diet supplemented with YFP. Total number of erythrocytes, leucocytes, and platelets as well as differential blood count were not affected with in YFP diet supplementation. Final body weight of control group was 121.05 kg and was similar to body weight of swine fed diet supplemented with YFP and 2% less soybean meal (121.45 kg). Based on results it can be concluded that supplementation with YFP did not alter immune function but it did enable decrease feed price due to reduction in soybean meal ratio.

swine, yeast functional product, hematological parameters

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