1Universidad Autónoma del Estado de México, Centro Universitario Amecameca, CP-56900, México
Universidad Autónoma Metropolitana, Unidad Xochimilco, CP-04970, México
*Corresponding author: ppfx2221@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 study was to evaluate the effects of the addition of glucoamylase and the reduction of the level of sorghum grain in a finishing diet on lamb performance (45 days) and on diet digestibility. The treatments evaluated were the following: a diet composed of 64% corn and sorghum grain mixture (64CSMG), a diet composed of 45% corn and sorghum grain mixture (45CSMG) and a diet composed of 45% corn and sorghum grain mixture plus added glucoamylase (1.5 ml of the enzyme protein/kg DM of grain; 45CSMG+E). In vivo DM digestibility showed differences (P<0.05) between treatments; the highest values were for the 64% grain diet (748 g/kg) and the 45% grain with enzyme diet (694 g/kg), and the lowest value was for the 45% grain without enzyme diet (740 g/kg). There were no differences (P> 0.05) in dry matter intake, average daily gain (ADG) and feed conversion even when the digestibility of the 45% grain ration with glucoamylase was improved.
Aspergillus niger, Exogenous enzymes, Glucoamylase, Grain, Lambs’ performance
