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. 2022 May 21;101(8):101972. doi: 10.1016/j.psj.2022.101972

Table 3.

Carcass traits and physico-chemical properties of breast muscle of slow-growing broiler chickens injected in ovo with GOS in response to heat stress.

Treatment (Tr)1
 Temperature (T)2
 Significance
C GOS TN HS SEM Tr T TrxT
Final body weight (g) 2,035 2,010 2,160 1,890 44.0 NS ** NS
Carcass yield (%) 74.6 74.2 75.2 73.9 0.34 NS * NS
Breast yield (%) 20.9 20.7 21.4 20.4 0.23 NS * NS
pH24 5.75 5.83 5.81 5.77 0.01 ** NS NS
Color 24 h
 L* 54.03 52.34 52.62 53.75 0.39 * NS NS
 a* 1.56 2.09 2.14 1.51 0.12 NS * NS
 b* 16.80 16.22 16.91 16.11 0.34 NS NS NS
WHC (%) 11.98 12.02 12.16 11.86 0.11 NS NS NS
Cooking loss (%) 22.22 22.31 22.27 22.27 0.12 NS NS NS
WBSF3 (Kg) 1.57 1.65 1.62 1.57 0.05 NS NS NS
1

C = Control (untreated); GOS = in ovo injected with GOS.

2

TN = thermoneutral conditions; HS = heat stress conditions (on d 36–50).

3

Abbreviation: WBSF, Warner-Bratzler shear force. Significance: NS = P > 0.05; * P < 0.05; ** P < 0.01.