![Sample our Bioscience journals, sign in here to start your access, Latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5925/TOC-Subject-Sample-2021-Bioscience.jpg"})
1. Dried poultry manure (DPM) collected from 1‐d to 3‐week‐old chicks, reared in electrical battery brooders, incorporated at a level of 0, 5, 10, 15 and 20% in a chick starter diet, was recycled four times.
2. There was a linear decrease in body weight and efficiency of food utilisation with each percentage increase in DPM.
3. The amount of dried droppings recovered as a percentage of food consumed was proportional to the amount of DPM included in the diet and remained fairly constant during the recycling.
4. Body weights and efficiency of food utilisation were substantially the same during the first three recycling periods but declined significantly during the fourth period.
5. Mortality was negligible and all chicks appeared healthy and vigorous.
6. Chicks fed on 10% DPM in an isocaloric and isonitrogenous (protein‐N) diet grew and utilised food as well as those fed on the basal diet; chicks fed on 20% DPM did not consume enough to meet their requirements.