IngentaConnect Effect of dietary enzymes on the ileal digestibility and abdomina...

Authors: SALEH, Fuad¹; OHTSUKA, Akira¹; HAYASHI, Kunioki

Source: Animal Science Journal, Volume 76, Number 5, October 2005 , pp. 475-478(4)

Abstract:

The effects of purified cellulase and a commercial feed enzyme (FE) containing cellulase, hemicellulase, pectinase and so on, on the performance, abdominal fat content, digestibility of ileal contents and metabolizable energy of broilers were examined. Male broiler chicks (Cobb strain) were divided into three groups: control, cellulase (1 U/g feed) and FE (0.6 mg/g feed) with seven replicates. Chicks were raised under a temperature condition of 25°C in wire bottom cages for 12 days from 15 days of age. Feed (corn–soybean meal diet: crude protein, 21%; metabolizable energy, 3000 kcal/kg) and water were offered ad libitum. Dietary cellulase had a negative effect on the bodyweight gain and feed conversion ratio. The FE had no effect on bodyweight gain, but tended to improve the feed conversion ratio. The ileal crude protein and ash digestibilities were improved by the FE, but not by the cellulase. Furthermore, cellulase decreased the abdominal fat content and the FE increased metabolizable energy. In conclusion, digestion is enhanced and an improvement in performance is brought about by FE and, interestingly, fat metabolism is affected by cellulase by an unknown mechanism.

Keywords: abdominal fat; broilers; cellulase; commercial enzyme; digestibility

Document Type: Research article

DOI: 10.1111/j.1740-0929.2005.00293.x

Affiliations: 1: Faculty of Agriculture, Kagoshima University, Kagoshima-shi, Japan

The full text electronic article is available for purchase. You will be able to download the full text electronic article after payment.

$50.39 plus tax Refund Policy

Effect of dietary enzymes on the ileal digestibility and abdominal fat content in broilers