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  • Title: Influence of an organic acid blend and essential oil blend, individually or in combination, on growth performance, carcass parameters, apparent digestibility, intestinal microflora and intestinal morphology of broilers.
    Author: Basmacioğlu-Malayoğlu H, Ozdemir P, Bağriyanik HA.
    Journal: Br Poult Sci; 2016 Apr; 57(2):227-34. PubMed ID: 26785140.
    Abstract:
    This study aimed to evaluate the influence of an organic acid (OA) and essential oil (EO) blends, individually or in combination, on growth performance, carcass parameters, apparent digestibility, intestinal microflora and intestinal morphology of broilers. A total of 480 one-d-old male Ross 308 chicks were randomly assigned to 4 treatments consisting of 4 replicates each (n = 30 birds in each replicate). Dietary treatments consisted of a basal diet (control), and basal diet supplemented with 2 g/kg OA blend (OAB), 300 mg/kg EO blend (EOB), or with 2 g/kg OA and 300 mg/kg EO blend (OAB-EOB) for 42 d. The dietary supplementation with EO blend or in combination with OA blend increased body weight gain and improved feed efficiency as compared to control. Dietary treatments had no significant effects on feed consumption or relative organ weights of broilers. The OAB diet increased carcass yield compared to the control diet but the lowest carcass yield occurred with the OAB-EOB combination. Birds fed on EOB and OAB-EOB diets had lower ileum Escherichia coli counts than birds fed on the control diet. There was no significant effect of treatments on apparent digestibility at 16-21 d but the EOB and OAB-EOB diets increased apparent digestibility of dry matter and crude protein during the finisher period (d 37-42) compared to the control diet. Birds fed on the EOB and OAB-EOB diets had greater villus height in the ileum at 21 and 42 d of age and had lower crypt depth in the ileum at 42 d of age than birds given the control diet. In conclusion, beneficial effects of the use of EO blend individually or in combination with the OA blend were observed but the OA blend alone was ineffective. Furthermore, the use of the combination of OA and EO was more effective, in some respects, than their individual use.
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