Effect of Supplementation of Fermented Yeast Culture on Hormones and Their Receptors on Exposure to Higher Temperature and on Production Performance after Exposure in Nicobari Chickens

Table 6

Effect of different treatments during exposure¹ on the production of eggs (percentage) of Nicobari chickens during the postexposure period (laying period)².

Weeks	CR^3	CH^3	SH^3
23	—	—	6.6 ± 0.12
24	7.51 ± 0.11	—	11.42 ± 0.05
25	14.16 ± 0.20	11.10 ± 0.21	17.77 ± 0.06
26	27.85^a ± 0.63	18.24^b ± 0.58	36.56^c ± 0.84
27	45.71^a ± 0.89	34.56^b ± 1.48	49.52^a ± 0.98
28	54.28^a ± 1.07	49.20^a ± 0.97	61.9^b ± 0.96
29	57.58^a ± 0.77	55.89^a ± 0.71	64.23^b ± 0.72
30	59.63^a ± 0.85	57.23^a ± 1.32	70.32^b ± 0.74

¹From 21 to 23 weeks of age, the CH and SH group birds were exposed to 39°C for 4 h under controlled conditions. CR: birds exposed to normal ambient room temperature. Mean ± SEM values for a week are represented in percentage. ²Mean ± SEM values for a week are represented in percentage. ³CR and CH groups: control (0 g FYC/kg). SH group: treatment/supplemented with FYC (700 mg/kg) from 23 to 30 weeks after exposure. ^a,b,cValues with different superscripts are significantly different at least at .