Table 2. Percentage of unfertilised eggs, early (EEM) and late (LEM) embryonic mortality and fertility after artificial insemination in broiler hens fed with GSE supplementation.

Parameters	A	B	C	D	Diet ABC	Diet AD
% Unfertilised	5.89 ± 0.89 a	4.23 ± 0.65 b	4.06 ± 0.75 b	6.28 ± 0.99	0.40	0.98
% EEM	4.62 ± 0.69	4.49 ± 0.55	5.46 ± 0.65	3.89 ± 0.54	0.16	0.73
% LEM	1.29 ± 0.47	1.2 ± 0.28	1.33 ± 0.33	1.12 ± 0.37	0.98	0.81
% Fertility	88.8 ± 1.19	90.53 ± 0.76	89.73 ± 1.11	89.17 ± 1.15	0.93	0.92
% Hatchability of incubated eggs	79.88 ± 1.04	79.55 ± 0.99	79.87 ± 1.15	77.5 ± 1.38	0.99	0.67
% Hatchability of fertile eggs	90.05 ± 0.64	87.93 ± 1.01	89.05 ± 0.83	86.86 ± 0.88	0.94	0.6

Results are presented as lsmeans ± SEM. P values and different individual letters indicate a significant effect of the diet between A, B and C groups (experiment 1) or between A and D groups (experiment 2). P value was considered as significant if P < 0.05. EEM, early embryo mortality; LEM, late embryo mortality. A: animals fed with control diet without GSE supplementation, B and C: animals supplemented with GSE at 0.5% and 1% of the total diet composition, respectively, starting at 4 week-old until 40 week-old and D: supplementation at 1% of the total diet composition starting at hatch until 40 week-old.