“…For the purpose of collecting data, three questionnaires have been developed for each actor in the supply chain, based on similar research on different food supply chains [ 27 , 29 , 30 ]. The LCA questionnaire for producers on the farm referred to characteristics of production (capacity, type, selection of hybrids, breeding and transport of laying hens), the provision and type of feed (production, mode and dynamics of transport, consumption), use of natural resources (type and dynamics), manner of maintaining hygiene in the facility (type and quantity of water and cleaning agents), weight and share of each quality class of eggs produced, method of packaging and distribution to retail (type and quantity of material, transport), non-compliance that resulted in discarded eggs during production, dead hens, generated waste (organic and inorganic) and manure handling.…”