R. Bras. Zootec.. 01/Jun/2016;45(6):281-7.
Effects of spent mushroom compost meal on growth performance and meat characteristics of grower geese
The cost of raw materials for poultry feeding has significantly increased annually. Thus, finding alternative feeds has become an important task of the feed/food industry. The mushroom industry is experiencing a global development, and the spent mushroom compost (SMC) from mushroom growing is typically recycled agricultural waste products that could thus provide a low-cost feed to animals.
Currently, mushrooms are typically cultivated within a 3-D architectural structure inside air-conditioned facilities. Substrates commonly used in mushroom production include agricultural by-products, such as cereal straw (rice, wheat, corn, and barley), cotton, cobs, husks, and pulp (), which undergo a process of mixing, high-temperature composting, pasteurization, inoculation with a pure mushroom culture, and incubation, prior to mushroom production. When the mushroom fruiting bodies mature and are ready for sale, the spent mushroom compost (SMC) is available as a by-product/waste (; ). At this stage, the compost is known as “spent mushroom compost” (SMC), and it also has nutritional components (): approximately 73.6% neutral detergent fiber, 55.0% acid detergent fiber, 8.1% crude protein, 2.1% ether extract, 9.8% non-fibrous carbohydrate, and 6.4% crude ash (). Based on this composition, SMC has potential as a feed resource for livestock. Growing Hanwoo steers were supplemented with 50% of the microbially-fermented spent mushroom substrates of the ad libitum group, which resulted in a tendency of increased live weight gain from 8 to 12%, as compared with the control group (). ) indicated that spent mushroom rice straw compost could replace 75% fresh Napoer grass (DM) for male cattle. reported that about 660,000 t of SMC (Pleurotus eryngii) were produced annually in Korea, while in Taiwan, at present, an increase of 130% means the annual production is about 80,000 metric tons of SMC.