Animal Nutrition and Feed Technology
SCOPUS
  • Year: 2013
  • Volume: 13
  • Issue: 3

Effect of a Fibrolytic Enzymatic Extract from Cellulomonas flavigena on In Vitro Degradation and In Vivo Digestibility and Productive Performance of Lambs#

  • Author:
  • N. Torres1,6,, G.D. Mendoza2, J.R. Bárcena1, S.S. González1, O. Loera3, A.Z.M. Salem4,7, A. Lara5
  • Total Page Count: 10
  • Page Number: 583 to 592

1Colegio de Posgraduados, Campus Montecillo, Estado de México, 56230, México

2Universidad Autónoma Metropolitana, Unidad Xochimilco, Departamento de Producción Agrícola y Animal, 04969, México D.F.

3Universidad Autónoma Metropolitana, Unidad Iztapalapa, Departamento de Biotecnología, 09340, México D.F.

4Universidad Autónoma del Estado de México, Departamento de Nutrición Animal, Facultad de Medicina Veterinaria y Zootecnia, Toluca Estado de México-50000, México

5Universidad Autónoma de Chapingo, Departamento de Zootecnia, Texcoco, Estado de México, 56230, México

6Universidad Autónoma de Guerrero, Unidad Académica Medicina Veterinaria y Zootecnia 2, Cuajinicuilapa, 41940, Guerrero, México

7Faculty of Agriculture (El-Shatby), Alexandria University, Egypt

Universidad Autónoma de Guerrero, Unidad Académica Medicina Veterinaria y Zootecnia 2, Cuajinicuilapa, 41940, Guerrero, México

*Corresponding author: nivigas@yahoo.com.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

Abstract

An enzymatic extract from Cellulomonas flavigena was evaluated at 0, 2.5, 7.5, 12.5 mL/kg DM of total mixed ration (TMR) on the in vitro degradation of DM, NDF and ADF and in vivo at 0, 5.0 and 7.5 mL of extract per kg DM of TMR to determine the digestibility and productive performance of lambs fed a TMR made up of 60% forage. Twenty four Pelibuey-Kathadin lambs were used in the trial. The in vitro degradation of ADF showed a linear (P<0.05) response from 6 to 72 h. There was no effect on DM intake, daily gain or feed conversion. The enzymatic dose tended to linearly decrease the apparent digestibility of DM (P=0.06), NDF (P=0.10) and ADF (P=0.06). The N-NH3 concentration showed a linear decrease (P=0.002) and total VFA concentration was linearly (P<0.001) increased. The incorporation of extract of Cellulomonas flavigena in the diet increased in vitro degradation of cellulose in terms of ADF but did not increase the digestion or productive performance of lambs.

Keywords

Digestibility, Feed intake, Exogenous fibrolytic enzymes, In vitro, Lamb