. 2021 Apr 25;58(2):110–118. doi: 10.2141/jpsa.0200030

Table 4. Breast muscle (right M. pectoralis major) weight of layer and broiler chickens fed a diet with various metformin concentrations.

	Experiment 1 (Layer)	Experiment 2 (Broiler)
Metformin (mg/kg)	Breast muscle weight (g)	Breast muscle weight (g)
0	4.7±0.2^b	35.2±1.6^b
150	5.6±0.2^a	41.6±1.8^a
300	5.3±0.3^ab	32.8±1.8^b

^{a, b}

Means not sharing a common superscript letter in the same column were significantly different (Tukey's HSD test, P<0.05). Values are given as mean±SE. The number of chickens used in each treatment group was 8.