Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

1 st WorkshopXIII International Feed Technology Symposiumand 8.1% as well as improvement of food conversion by 5.8%, 3.1% and 7.1%. Additionof Digestovet to food after 42 nd day caused increase of body mass of chickens by 7.6%with considerably more favourable food conversion [12]. Addition of the sage, thymeand rosemary extracts improves only the growth of chickens without the influence onfeed intake and feed conversion ratio from 14 th to 21 st day [6]. Addition of ether extractsto the mixture (Crina Poultry) improves gain by 2% and food conversion by 5% andreduces the viscosity of the intestinal content and share of chickens with adhesiveexcrements. In two separate trial on young turkeys, live weight in 16 th and 18 th weekincreased by 3.9% and 4.4% due to the nutrition with Digestar [19]. However, otherauthors [11] point out that thymol and its isomer carvacrol have different effect ongrowth and triglyceride metabolism in the broilers.In our study, addition of Citrus Fennel to the mixture caused certain decrease of drymatter in chicken organism. Content of crude proteins did not change, but crude fatsdecreased statistically significantly (P