University of Tasmania
Browse

File(s) under permanent embargo

Productive performance, rumen volatile fatty acid profile and plasma metabolites of concentrate-supplemented Bach Thao goats in Vietnam

journal contribution
posted on 2023-05-18, 06:34 authored by Quan, NH, Peter Lane, Van, NH, David ParsonsDavid Parsons, Ba, NX, Malau-Aduli, AEO
Twenty-five Bach Thao bucks (7 month old and 20.9±0.3 kg BW) were used to quantify the effect of concentrate supplementation on growth performance, rumen volatile fatty acid profile, digestibility and plasma metabolites. Goats were allocated into five treatment groups of varying levels of concentrate supplementation: Control (ad libitum access to elephant grass), 0.6% C (control plus 0.6% of concentrates), 1.2% C (control plus 1.2% of Concentrates), 1.8% C (control plus 1.8% of Concentrates) and 2.4% C (control plus 2.4% of Concentrates) as a percentage of liveweight on a dry matter basis. Growth and feed intake were measured in a 6 week feeding trial period after 3 week of initial adaptation. In vivo digestibility was assessed in the 10th week by the total faecal collection method. There were significant increase sin Average Daily Gain (ADG), feed intake and digestibilities of Dry Matter (DM), Organic Matter (OM) and Crude Protein (CP) as dietary concentrate levels increased. However, digestibility of Neutral Detergent Fibre (NDF) was not different between the concentrate-supplemented groups. Pre-feeding ammonia concentration in rumen fluid was not different between treatments but 4 h after feeding, significant differences were detected. The values of ammonia ranged from 100-200 mg L-1 at both timesof measurement. Rumen fluid pH values were not different 4 h post-feeding. Volatile fatty acid concentrations of propionate and butyrate increased with increasing levels of concentrates consumed, in contrast to decreased acetate concentration. This study clearly demonstrated that increasing concentrate levels offered to Bach Thao bucks up to 1.8% of live weight on a DM basis resulted inthe greatest improvement in ADG, feed intake and nutrient digestibility, thus, confirming the tested hypothesis that increased level of concentrate supplementation will improve productive performance of goats without an adverse effect on rumen fermentation and nutrient digestibility.

Funding

Australian Centre for International Agricultural Research

History

Publication title

Journal of Animal and Veterinary Advances

Volume

13

Issue

21-24

Pagination

1173-1178

ISSN

1680-5593

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Medwell Journals

Place of publication

Pakistan

Rights statement

Copyright 2014 Medwell Journals

Repository Status

  • Restricted

Socio-economic Objectives

Goats

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC