ARTICLE FEED & ADDITIVE MAGAZINE March 2023 65 Graph 2. A proposed postbiotic modulator for GBA, using GABA and IAB as example in broiler chickens Table 3. A summary of three commercial broiler chicken trials by using GABA and IAB in closed-house farms a,b p<0.05 Trial I Trial II Trial III Control 100 2.21b 3.12 1.42ab 1 438 Control 48 2.06a 2.89 1.41a 0 419a 3.45 Control 140 2.69 4.46a 1.66a 0 386a GABA 300 100 2.26a 3.14 1.39b 0 466 IAB 500 100 2.2b 3.11 1.41a 1 442 GABA+IAB 300+500 100 2.23ab 3.08 1.38b 1 461 GABA+IAB 300+500 48 2.19b 2.86 1.31b 0 477b 3.20 GABA+IAB 300+500 140 2.70 4.23b 1.57b 0 410b Trials Diet group Dosage, g/t Feed Statical Analysis Birds; Female Age,day BW, kg FI, kg FCR Mortality,% EPEF Nitrogen in feces, %DM Experimental feed (Inclusion rate) Commercial feed (Top Mixing) CRD_Tukey’s test CRD_T test
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