Fig 1.
Laying curve (A) and number of double-yolk eggs (B) in broiler hens from 23rd to 40th week. Eggs were collected and weighed daily for all hens fed with different concentrations of GSE dietary supplementation or with a control diet. A: animals fed with control diet without GSE supplementation (n = 92), 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 (n = 80), and D: supplementation with GSE at 1% of the total diet composition starting at hatch until 40 week-old (n = 72). Results are presented as lsmeans ± S.E.M. P values and different individual letters indicate a significant effect of the diet between A, B and C groups or between A and D groups. P value was considered as significant if P < 0.05.