Effects of dietary Enterococcus faecium on growth performance, carcass characteristics, faecal microbiota, and blood profile in broilers
M. Mohammadi Gheisar, A. Hosseindoust, I.H. Kimhttps://doi.org/10.17221/8680-VETMEDCitation:Mohammadi Gheisar M., Hosseindoust A., Kim I.H. (2016): Effects of dietary Enterococcus faecium on growth performance, carcass characteristics, faecal microbiota, and blood profile in broilers. Veterinarni Medicina, 61: 28-34.
This research was performed to evaluate the effect of supplementing broiler diets with a probiotic containing Enterococcus faecium on growth performance, carcass characteristics, faecal microbiota, and blood profile. A total of 384 one-day-old Ross 308 broiler chicks (mixed gender) with an average initial BW of 39.2 g were used in a 35 days feeding trial. The chicks were allotted to pens with 16 birds per pen and eight replications per treatment with food and water provided ad libitum. Treatments were: (1) basal diet, (2) 0.25% probiotic, and (3) 0.5% probiotic. Results indicated that body weight gain (BWG) on Day 7 to 21, Day 21 to 35 and overall (0 to 35) increased (P < 0.05) linearly but feed intake (FI) and feed conversion ratio (FCR) were not affected. A linear increase (P < 0.05) was observed in the relative weight of breast muscle when comparing the 0 to 0.5% concentration of probiotic, but breast meat colour was not affected by treatments. A significant impact (linear effect, P < 0.05) was observed on drip loss on Day 1. Inclusion of probiotic decreased (P < 0.05) the count of Salmonella linearly but the counts of E. coli and Lactobacillus were not affected. There was no remarkable influence on blood profile. Thus, it was concluded that inclusion of a probiotic containing Enterococcus faecium improved growth performance and altered the intestinal microbial population, without any negative effects on meat colour and blood profile in broiler chickens.Keywords:broiler; carcass characteristics; Enterococcus faecium; faecal microbiotaReferences:
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