1Universidad Autónoma Metropolitana, Unidad Iztapalapa, Departamento de Biotecnología, 09340, México D.F., México
2Universidad Autónoma Autónoma del Estado de Hidalgo, Instituto de Ciencias Agropecuarias, Tulancingo, México
3Universidad Autónoma Metropolitana. Unidad Xochimilco, Departamento de Producción Agrícola y Animal, 04969, México D.F., México
4Universidad Autónoma del Estado de México, México Centro Universitario Amecameca, km. 2.5 Carr. Amecameca Ayapango, México, 56900-México
5Colegio de Postgraduados, México Campus Montecillo, 56230, Texcoco, México
6Universidad Autónoma de Guerrero Unidad Académica Medicina Veterinaria y Zootecnia Unidad Regional Costa Chica. 41940, Cuajinicuilapa, Guerrero, México
Universidad Autónoma Metropolitana, Unidad Xochimilco Departamento de Producción Agrícola y Animal, 04960 México
*Corresponding author: gmendoza@correo.xoc.uam.mx
#This paper is part of the special issue entitled: Exogenous Enzymes in Animal Nutrition - Benefits and Limitations, Guest Edited by A.Z.M. Salem and N. Odongo, and Editor for Animal Nutrition and Feed Technology, A.K. Pattanaik
The objective of this experiment was to evaluate the effect of a lignocellulolytic extract (LE), extracted from the thermotolerant basidiomycete Fomes sp. EUM1, on the intake, digestibility, feed efficiency, growth and productive performance of lambs. The xylanase and cellulase enzyme activities of the LE were 169 IU g−1 and 50 IU g−1, respectively. Eighteen Suffolk crossed lambs (20±0.5 kg body weight) were used for the experiment (58 days). A completely randomized experimental design was used with the following treatments: 0, 60 and 120 mL of LE sprayed per kg of forage 24 h before feeding. Average daily gain and digestibility were improved (P<0.05) with LE supplementation (60 and/or 120 mL). The proportion of butyric acid was reduced with the use of 60 mL of LE (P<0.05). The cellulase activity in the rumen fluid increased linearly (P<0.05) with increasing LE doses. The LE from Fomes sp. EUM1 improved the cellulolytic activity in the rumen fluid, thereby increasing the digestibility and body weight gain in lambs.
Digestibility, Exogenous enzymes, Fomes sp, Lambs
