Original scientific paper
EFFECTS OF FLAVOMYCIN AND PROTEXIN ON GROWTH PERFORMANCE AND INTESTINAL MICROFLORA POPULATION OF BROILER FED DIETS WITH DIFFERENT LEVELS OF SOY OIL
Seyed Davood Sharifi
Ali Akbar Khadem
E. Tavazoee
Abbas Barin
Hamidreza Moslehi
Abstract
A study was conducted to determine the effects of supplementary flavomycin and protexin in diets containing different levels of soy oil on growth performance and intestinal microbial population of broiler chicks. Three hundred and sixty one-day old Ross broiler chicks were randomly allocated to 6 treatments, with 4 replicates and 15 birds per each replicate in a randomized complete block design. Treatments were: 3% soy oil + flavomycin (400g/t), 3% soy oil + protexin (500g/t), 3% soy oil without any growth promoter, 6% soy oil + flavomycin (400g/t), 6% soy oil + protexin (500g/t) and 6% soy oil without any growth promoter. The experimental period was 42 days and feed intake and body weight gain were recorded weekly. The ileal numbers of Lactobacilli and E. coli were counted at 21 and
42day of age. The results showed that addition of protexin to diets (containing 3 or 6% soy oil), reduced feed intake and weight gain significantly (P<0.05). Supplementation diets with flavomycin, resulted in significantly lower counts of Lactobacilli and E. coli. Lactobacilli counts in the ileum of birds receiving protexin were significantly higher (P < 0.05) than those of the other treatments. It could be concluded that supplementing diets containing fat with protexin have negative effects on broiler performance and high numbers of lactobacilli may play a role in growth depression related to impaired fat absorption due to bile acid deconjugation
Keywords
Broiler; Flavomycin; Protexin; Intestinal Microbial Population
Hrčak ID:
60608
URI
Publication date:
15.8.2010.
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