. 2024 Dec 18;66:62. doi: 10.1186/s13028-024-00782-6

Table 1.

Efficacy of GAA supplementation on BW and BWG of broilers reared under HSD conditions

Stocking density (birds/m²)	GAA (g/kg feed)	Average body weight (g)					Average body weight gain (g)
Stocking density (birds/m²)	GAA (g/kg feed)	D 7	D 14	D 21	D 28	D 35	D 7	D 14	D 21	D 28	D 35
LSD	0	207.00	563.29^a	1149.75^b	1911.29^b	2649.86^b	165.00	356.27^a	586.29^ab	761.72^b	738,57^ab
LSD	0.6	204.43	564.00^a	1172.71^a	1969.71^a	2741.14^a	159.29	359.57^a	608.71^a	797.00^a	771.43^a
HSD	0	204.57	526.86^b	1075.57^d	1811.29^d	2507.57^d	159.43	322.29^b	548.71^b	735.71^b	696.28^b
HSD	0.6	206.43	542.00^ab	1119.86^c	1866.86^c	2588.29^c	161.29	335.57^ab	577.86^ab	747.00^b	721.43^b
Pooled SEM		2.24	4.98	7.52	11.51	17.22	1.19	4.94	6.66	6.12	7.42
P value
SD		0.964	0.002	< 0.001	< 0.001	< 0.001	0.455	0.002	0.005	0.001	< 0.001
GAA		0.940	0.357	< 0.001	< 0.001	< 0.001	0.421	0.336	0.029	0.015	0.015
SD × GAA		0.643	0.401	0.087	0.803	0.630	0.121	0.559	0.764	0.192	0.731

P value in bold are statistically significant

LSD, low stocking density (10 birds/m²); HSD, high stocking density (16 birds/m²); SD, stocking density; GAA, guanidinoacetic acid (0.6 g/kg) feed

^a,b,c,dDifferent superscript letters in the same column indicate a significant difference (P < 0.05). Pooled SEM: total SEM