Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Daniela Mihaela GRIGORE, Georgeta CIURESCU, Nicoleta RADU, Narcisa BABEANU
The current study aimed to evaluate the effects of spent brewer’s yeast (SBY, Saccharomyces spp.), with or without the addition of Rhodotorula spp. biomass (Rh), as dietary supplements on broiler health status and growth performance. A total of 320 one-day-old, Ross 308 broiler chicks were randomly divided into eight experimental groups with five replicate pens of eight birds/replicate. A 4 by 2 factorial design study was used, with SBY different inclusion levels (0, 0.6, 1 and 1.3 g/kg feed) and Rh supplementation (0 or 0.3 g/kg of feed) as treatments. There were no significant effects between the main factors SBY x Rh on the hematologic profiles (P>0.05) of the broilers. Blood serum biochemical profile of SBY and Rh groups and the interactions between treatments were evaluated and no significant effects were found (P>0.05), except for the glucose (p = 0.023), which was influenced by the SBY addition. Moreover, the SBY addition (0.6 and 1g/kg) resulted in similar productive performances for weight gain and average daily gain, with the control group (Corn-SBM diet). In conclusion, yeast bioactive, nutritive, and pharmacologic compounds could serve as a suitable low-cost option to conventional supplements used in meat poultry nutrition.
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