Efficacy of GUSTOR BP70 and colistin in broilers

Published: 25/08/2014
Published by :
Josep Chillón
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The aim of this study, presented in IPSF 2014, was to evaluate the effect of GUSTOR BP70 (partially protected sodium butyrate) and colistin on performance, digestive organs, intestinal villi and E. coli development in broilers chickens. Nine hundred twenty four one-day-old mixed Cobb® chicks were divided in 3 treatments with 7 replicates each in a randomized block design. Treatment one (T1) was a control diet without any growth promoter, treatment two (T2) was the control diet plus colistin at 100,000 IU/kgBW and treatment three (T3) was the control diet with GUSTOR BP70 at 0.7 Kg/t. Chicks were fed in mash form for 3 phases: starter (1-14 days), grower (15-28 days) and finisher (29-42 days). Chicks fed GUSTOR BP70 in grower and finisher phases had the highest weight gain and better feed conversion ratio. Colistin performance was similar to sodium butyrate in finisher phase. Relative digestive organs weights were not affected by treatment in any phase. Small intestine relative lengths of birds fed sodium butyrate and colistin at 14 days were longer than those of birds fed control diet. Jejunal villi of birds fed sodium butyrate and colistin at 42 days were higher than birds fed the control diet. Colistin produced the deepest crypts and the lowest villi height/crypt depth ratios in all intestinal segments at 14 days. Intestinal E. coli growth was not affected by any treatment. These data indicate that GUSTOR BP70 and colistin improves performance and BP70 maintaining intestinal villi development in broilers chickens


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