Table 2. Proximate composition of laying hens breast slaughtered by halal and gas-stun method with CO₂, Ar and N₂

Traits (%)	Halal	CO7	CO8	CO9	Ar8	Ar9	N9
Moisture	73.34±1.02^b	75.45±2.61^a	75.00±2.49^ab	74.91±2.47^ab	73.93±1.60^ab	73.74±1.14^ab	73.95±1.85^ab
Protein	23.95±1.77	22.24±2.44	21.83±2.10	22.02±2.46	23.74±2.22	22.89±1.88	23.27±2.04
Fat	0.71±0.27^ab	0.68±0.39^ab	0.91±0.45^ab	0.35±0.39^b	0.43±0.31^b	1.00±0.64^a	1.12±0.45^a
Ash	2.91±0.09^a	2.92±0.14^a	2.79±0.11^bc	2.85±0.17^abc	2.90±0.05^abc	2.87±0.09^ab	2.78±0.10^c

All values are mean±SD.
Means sharing the same letters within a row are not significantly different at p<0.05 by Duncan’s multiple range test.
Treatments: Halal, used knife; CO7, gas stun with 70% carbon dioxide; CO8, gas stun with 80% carbon dioxide; CO9, gas stun with 90% carbon dioxide; Ar8, gas stun with 80% argon; Ar9, gas stun with 90% argon; N9, gas stun with 90% nitrogen.