COMPARISON OF TWO SOURCES OF ENCAPSULATED SODIUM BUTYRATE ON BROILERS PERFORMANCE

In the last ASAS Virtual Meeting 2020, it was presented a study comparing two sources of encapsulated sodium butyrate (ESB, ~30% NaBut encapsulated with vegetable fat), on broilers performance. A total of 960 one-day-old chicks were distributed into 3 treatments: CON (control diet), AD (CON + 2.19kg/tn of ESB from supplier 1) and GUSTOR (CON + 2.19kg/tn of ESB from NOREL). Performance was recorded at 21 and 42d, and the results presented were corrected by mortality; gut morphology from jejunum at 42 days was also recorded. Numerical differences were observed in body weight between control and treatment groups at 21d (777g, 786g, and 784g, for CON, AD and GUSTOR) and at 41d (2719g, 2727g and 2734g, for CON, AD and GUSTOR). From 0-21d, 22-42d and 0-42d average daily feed intake (g/d) was significantly affected by treatment (0-42d: 101b, 100b, 98a, for CON, AD and GUSTOR, P=0.045). FCR was significantly improved by GUSTOR at 21 (1.52b, 1.52b and 1.48a for CON, AD and GUSTOR, P=0.002) and at 42 days (1.59b, 1.58b and 1.56a for CON, AD and GUSTOR, P<0.001). No differences were found in gut development at 42d due to a totally encapsulated active principle without activity in the small intestine. Even though both ESB were similar, birds supplemented with ESB-GUSTOR were more efficient than birds supplemented with ESB-AD.