Feeding treatments were imposed in two feeding trials involving Cobb broiler and Bond Brown layer birds. Three feed additives (biochar, bentonite and zeolite) were supplied at four rates (0, 1, 2 and 4% w/w) in feed, as previously considered in the context of animal production, was considered in the context of Excreta chemical and water retention properties and granulation characteristics of decomposed excreta (manure) were characterised. At field capacity (– 0.01 MPa), manure produced from control and 4% bentonite diets contained significantly (p = 0.001) more water (at 1.93 and 2.44% v/v water, respectively) than zeolite and biochar treatments. Manure mesoporosity was significantly (p = 0.015) higher in 2 and 4% bentonite treatments than other feed additives. Fresh excreta from layer birds on the control diet contained 6% w/dw N and 35% C, which was decreased to 2.6% N and 28% C after decomposition, with C:N ratio changing from 5.9 to 12.1. Ammonia loss was higher from biochar and zeolite manures than control or bentonite, associated with higher pH in the biochar and zeolite manures. More N was unaccounted from bentonite manure than other treatments, presumably lost as N₂O or N₂, a result linked to its higher moisture content and its enhanced rate of denitrification. The highest proportion of granules in the size class desired for fertilizer spreading was achieved using decomposed manure from the 1 and 2% w/w biochar treatments of the broiler trial, and 1 and 2% zeolite and 4% biochar treatments of the layer trial. Thus the feed amendments improved poultry manure in specific ways.

在两项涉及Cobb肉鸡和Bond Brown蛋鸡的饲养试验中实施了饲养处理。三种饲料添加剂（生物炭，膨润土和沸石）以四种速率（0、1、2和4％w / w）在饲料中供应，如先前在动物生产中所考虑的那样，在Excreta化学品和高岭土中被考虑到。表征了排泄物（粪便）的保水性能和造粒特性。在田间持水量（– 0.01 MPa）下，对照和4％膨润土日粮产生的粪肥所含水（分别为1.93和2.44％v / v水）显着（p = 0.001）比沸石和生物炭处理的水多（p = 0.001）。在2％和4％的膨润土处理中，粪肥中孔率显着高于其他饲料添加剂（p = 0.015）。对照饮食中蛋鸡的新鲜排泄物含有6％w / dw N和35％C，分解后氮含量降至2.6％，碳含量降至28％，C：N比从5.9变为12.1。生物炭和沸石粪肥的氨损失高于对照或膨润土，这与生物炭和沸石粪肥的较高pH有关。与其他处理相比，膨润土肥料中更多的N不能算出，大概是N的损失。₂ O或N ₂，其结果与其较高的水分含量和较高的反硝化速率有关。使用肉鸡试验的1％和2％w / w生物炭处理以及分层试验的1％和2％沸石和4％生物炭处理的分解肥料，可以实现肥料撒播所需的最大粒径颗粒。因此，饲料改良剂以特定方式改善了家禽粪便。