We have three Rhode Island Red hybrid hens. They all developed egg yolk peritonitis after about one year of laying. They are all now on the Suprelorin implant for the past one-two years. When we went to the vet to renew the implant she said they had put on an enormous amount of weight (from 1.9kg to 2.8 kg). We were just feeding them layer's mash (even though they are not laying anymore)- they just like it a lot. Other treads and forums I researched mention not to feed home- made mixes as they might not provide enough nutrition. The vet said that, since our hens are not laying, they should eat a lower- calorie diet. We don't want to overfeed our hens (I've read about all the risks in relation to hen obesity) but we don't want to under- feed them either. Does anyone have any tips in this regard? Our hens only have part of the day access to grass due to predators,... Your help would be very much appreciated!