Different sources of butyric acid on performance in broilers

In the last IPPE 2019 (Atlanta), our Product Manager Dr. Cinta Sol presented a study aiming to evaluate the effect of different butyric acid (BA) based additives on performance in broilers. 1,000 broiler chicks (1d) were distributed in 5 treatments (n=8). The treatments were: T1 – Control feed without additives; T2 – GUSTOR N’RGY (1Kg/t of feed), 70% NaBut protected with sodium salts of PFAD, BA=56%; T3 – GUSTOR COATED (2.19Kg/t), 32% NaBut encapsulated with palm stearine, BA=25.6%; T4 – GUSTOR BCP5 (0.8Kg/t), 85% CaBut protected with palm stearine, BA=69.9%; T5 – Tributyrin (0.65 Kg/t), 99% Glicerol tributyrate, BA=86.4%. The same amount of BA was included in all treatments. The parameters evaluated were: BW, FCR, feed consumption (FC) and EPEF. There was a trend to have different Final BW (35 days), being T2 birds the heavier and T1 the lighter (2367^y, 2441^x, 2414^xy, 2374^y, and 2389^xy for T1, T2, T3, T4 and T5 respectively; P=0.088). FCR was significant different being the lowest for T5, which improved the T1 situation as well as T2 and T3 (1.51^c, 1.47^ab, 1.46^ab, 1.48^bc, 1.44^a for T1, T2, T3, T4 and T5 respectively; P=0.004). No differences were found in FC or EPEF. It was concluded that the better results in performance were achieved with GUSTOR N’RGY and Tributyrin, being GUSTOR N’RGY broilers heavier than the Control broilers. It seems that the salt of BA, sodium or calcium also determined the effectiveness of the additive. In this study, calcium salt of BA had lower effect than sodium salts