A saying goes “To attain many advantages at one move,” and it goes for the Chicken Farm 927 situated at the foot of Kuil Hill, Ryokpho District, Pyongyang. It is getting a lot of profits by making effective use of “small things,” which used to be regarded as waste.
Electric Power from Waste
Today the farm is breeding tens of thousands of chicks and chickens for meat and eggs. The excrement from them totals as much as 15 tons a day. In the past the farm used to put most of the excrement in a dump to produce manure. This caused an unpleasant smell along with gas generated from the decaying excrement, badly affecting the protection of the ecological environment in no small measure.
Now the farm made a plan for producing electricity by using the excrement, and put efforts into the project. Thus it built a methane-generating tank with the capacity of 1 000㎥, and completed a methane-based power production system. Workteam leader Kim Kwang Nam says, “We use some of the produced gas for cooking at the canteen, hostel and recuperation house. The waste heat from the methane production is used for the operation of the bath house and greenhouse and for heating offices. And the sediment from the production of the gas is used for the production of quality organic fertilizer to be sent to neighbouring farms.”
The farm also uses rice chaff effectively. It gathers rice from its fields of scores of hectares, and the chaff from the rice cleaning amounts to dozens of tons. In June 2019 power generation began using rice-chaff gas. Solar energy is also in effective use. Seventy percent of the electricity needed for the operation of the farm comes from the three sources of energy, that is, the chicken excrement, rice chaff and solar energy.
Substitute for Basic Feed
The farm used to depend on cereals like corn and bean for chicken feed. In consideration of the fact that it had tens of thousands of chickens, the amount of cereals consumed for their feed was not small at all. So the farm paid attention to the matter, and strove to produce substitute feed.
The research team of the farm directed their attention to bean cake first. At that time the farm extracted oil from soy beans gathered from its fields, and sold bean cake from the oil extraction to neighbouring farms at a low price. Now the researchers found out that bean cake was an ideal substitute feed as it contains a lot of vitamins and nutrients. By mixing the bean cake with dried grass gathered from natural grassland, maize straw and other kinds of materials they succeeded in producing substitute feed containing different vitamins, proteins and minerals. This made it possible to reduce the consumption of grains for feed by 50%.
The farm is also making effective use of the by-products from the chicken processing such as the feather and intestines. In Juche 106 (2017) the research team developed the “Kuilbong”- brand additives for egg-laying and fattening by using peat, chicken feather and intestines.
Now the farm is maintaining the egg-laying and fattening rates at over 90% using the substitute feed and the “Kuilbong” additives.