This research aims to determine the effect of the combination of three nanoencapsulated essential oils on intestinal morphometry in chickens. This research was carried out in a 12 m2 shed in Urb. Santa María in the city of Trujillo - La Libertad and in the Microhistology Laboratory of the National University of Huancavelica (UNH). 60 Cobb 500 male chickens of 0 days of age were evaluated, a completely randomized design (DCA) was used where they were distributed in 4 treatments with 3 experimental units each treatment which were: T0: Balanced Food (BF), T1: BF + 50% of Nanoencapsulated Soursop Essential Oil (NSEO), 25% of LNEO and 25% of NEEO, T2: BF + 25% of NSEO, 50% of Lemon Nanoencapsulated Essential Oil (LNEO) and 25% NEEO; T3: BF + 25% NSEO, 25% LNEO and 50% Nanoencapsulated Eucalyptus Essential Oil (NEEO). in turn, their productive performance was measured in stages. 1 cm of small...