Tropical Animal Health and Production

, Volume 37, Supplement 1, pp 123–142 | Cite as

Digestible Energy Requirements of Mexican Donkeys Fed Oat Straw and Maize Stover

  • L. Carretero-Roque
  • B. Colunga
  • D. G. Smith
  • M. Gonzalez-Ronquillo
  • A. Solis-Mendez
  • O. Castelán-Ortega

Abstract

The limited availability of food, together with the constraints that traditional management systems impose on the natural foraging behaviour of donkeys, often results in severe under-nutrition. Few studies have been conducted into the digestibility of different forages and little information exists on nutritional requirements of donkeys. In order to measure digestible energy requirements of donkeys under tropical conditions, an experiment was carried out at the Centre for Research in Agricultural Science (CICA) and the Faculty of Veterinary Medicine of the Universidad Autónoma del Estado de México located in the Toluca valley, Central México. Thirty-two donkeys of a body condition typical for Central México were divided into four groups of 8 animals each according to their sex and live weight: group 1 (Gl) comprised male donkeys below the average body weight (102 ± 5 kg); group 2 (G2) comprised male donkeys of average body weight (121.5 ± 4 kg); group 3 (G3) comprised female donkeys below average weight (111.8 ± 5 kg); and group 4 (G4) comprised female donkeys of average weight (127.6 ± 5 kg). A diet of oat straw or maize stover and 15% alfalfa hay was offered to meet exact maintenance requirements. The donkeys were monitored for 13 months. The live weight of all animals was recorded daily in order to monitor whether maintenance requirements were being met. Mean daily digestible energy (DE) requirements were measured during the winter, spring, summer and autumn of 2003–2004. Digestible energy requirements of all four sex and liveweight groups were significantly (p > 0.05) higher during the spring than during the other seasons of the year (13.5, 18.0, 10.4 and 14.3 MJ DE per day during winter, spring, summer and autumn, respectively). Predicted DE requirements of donkeys with a live weight range betweenn 90 and 150 kg using the data from the present study were less than those predicted using scaled-down horse feeding standards.

Keywords

donkey energy México 

Abbreviation

ADF

acid detergent fibre

ADL

acid detergent lignin

CICA

Centre for Research in Agricultural Science (Universidad Autónoma del Estado de México)

CP

crude protein

DE

digestible energy

DM

dry matter

DMD

(apparent) dry matter digestibility

DMI

dry matter intake

GE

gross energy

IVD

in vitro digestibility

LW

live weight

NDF

neutral detergent fibre

OM

organic matter

OMD

(apparent) organic matter digestibility

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • L. Carretero-Roque
    • 1
  • B. Colunga
    • 1
  • D. G. Smith
    • 3
  • M. Gonzalez-Ronquillo
    • 2
  • A. Solis-Mendez
    • 1
  • O. Castelán-Ortega
    • 1
  1. 1.Centro de Investigación en Ciencias AgropecuariasUniversidad Autónoma del Estado de MéxicoEstado de MéxicoMéxico
  2. 2.Faculty of Veterinary MedicineUniversidad Autónoma del Estado de MéxicoEstado de MéxicoMéxico
  3. 3.Department of Agriculture and ForestryUniversity of AberdeenUK

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