Table 3. Slaughter results and carcass traits in male broiler chickens at 42 days of age, according to treatment¹⁾

Variables	Control	GAA	TM	GT	p-value	SEM²⁾
Cold carcass weight (g)	1956.25±14.74³⁾	1951.25±18.83	1953.75±37.67	1947.50±28.61	0.86	5.93
Slaughter yield (%)	73.75±3.03	74.00±3.94	73.88±1.80	73.25±2.77	0.92	0.67
Breast yield (% CC⁴⁾)	37.50±2.29	38.25±1.09	37.88±2.92	37.00±4.06	0.87	0.63
Pectoralis m (% CC)	27.25±0.11^b	27.68±0.15^a	27.46±0.46^ab	27.86±0.04^a5)	0.01	0.05
Wings (% CC)	9.38±0.41	9.33±0.15	9.35±0.11	9.40±0.16	0.85	0.05
Thighs (% CC)	15.38±0.74	15.25±0.78	15.31±0.53	15.23±0.15	0.95	0.14
Drumsticks (% CC)	13.35±0.42	13.25±0.23	13.30±0.23	13.28±0.18	0.67	0.06
Hind legs (% CC)	28.73±0.68	28.50±1.10	28.61±0.51	28.50±0.22	0.83	0.16

Control, birds receiving basal diets with eggs incubated under standard conditions; GAA (control supplement), control group supplemented with GAA (1.2 g/kg); TM (thermal manipulation), birds receiving basal diets with eggs incubated under pre-TM conditions; and GT (thermal manipulation supplement), TM group supplemented with GAA (1.2 g/kg). All treatments were subjected to chronic heat stress from 28 to 42 days of age.
SEM, standard error of the mean.
Values are mean±SD (n=40).
% CC, percentage of cold carcass weight
Different superscript letters in the same row indicate significant differences at (p<0.05).