Table 4. Myopathy rates (means) in male broiler chickens at 42 days of age, according to treatment¹⁾

Variables	Control	GAA	TM	GT	p-value	SEM2)
Moderate white striping (%)	24±3.923)	25±3.81	22±4.14	24±2.97	0.58	0.66
Severe white striping (%)	14±3.31	15±6.74	13±4.70	16±3.81	0.22	0.85
Total white striping (%)	38±2.88	37±3.89	37±3.01	39±3.78	0.43	0.60
Wooden breast (%)	21±6.67	18±7.30	17±5.31	14±4.87	0.16	1.08
Spaghetti meat (%)	16±4.77	12±5.23	14±4.33	13±4.30	0.44	0.83

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).