Table 2 Effect of supplementation of probiotics and clove essential oil on nutrient digestibility (%) and digestive enzymes activities (U/g) of heat-stressed broiler chickens.

Nutrient digestibility

 Dry matter

68.4^b

73.5^a

70.3^ab

74.1^a

 Crude protein

71.7^b

74.2^a

72.0^b

75.6^a

 Ether extracts

64.9^b

69.1^a

65.4^b

70.2^a

Digestive enzymes

 Amylase

157^b

163^b

182^a

179^a

 Trypsin

94.6

95.4

97.5

96.2

 Lipase

67.5^c

71.8^bc

75.1^b

80.7^a