I have always used dumour for the life of my chickens. I thought maybe ill try a bit more expensive feed layena and see how it goes. I always had an excellent egg laying rate, i swotched to layena anyways and a chicken got pale and lethargic, get better and happened to her again. Then i only was getting 30% of my normal laying rate from all birds. . . Theyve been back on dumour for 2 weeks and laying rate is increasing back up. . Anyone else have layena issues??