New feed additives based on phytogenics and acidifiers in animal nutrition

Low regulations for feed additives use, has been changed in EU as well as in our country, especially in use of antibiotics as growth promotors. Along years it has investigated an alternative for antibiotics as growth promotors. Essential oilsand organic acids are one of alternative feed, which acting in a few of the most important directions: as antioxidants, metabolic upgraders, growth promotors and development of pathogenic microorganizms controllers, including moulds and bacterias and as environmental protecting through control of amonia and nitrogen excretion. The objective of this paper was to determine the composition of essential oils in a commercial product which, in combination with the blend of organic acids may be used in poultry nutrition as an alternative to antibiotic growth promoters and establish impacts on performance parameters in broilers and microbiological properties of feces. Obtained results showed that the product contained an essential oil in which over 75% of total mass account for 2-phenol-carvacrol and eugenol. Tested product has been found to have positive effects in reduced mortality (from 4,45% to 1,5%), higher body weight by 5,55% and decreased feed conversion by 9.9%. Significant positive effect has been shown in reduction of abdominal fat content, by 70%, and it can be concluded that product in question may be successfully used in poultry nutrition.