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


Quan, NH and Lane, PA and Van, NH and Parsons, D and Ba, NX and Malau-Aduli, AEO, Productive performance, rumen volatile fatty acid profile and plasma metabolites of concentrate-supplemented Bach Thao goats in Vietnam, Journal of Animal and Veterinary Advances, 13, (21-24) pp. 1173-1178. ISSN 1680-5593 (2014) [Refereed Article]

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Copyright 2014 Medwell Journals

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DOI: doi:10.3923/javaa.2014.1173.1178


Twenty-five Bach Thao bucks (7 month old and 20.90.3 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.

Item Details

Item Type:Refereed Article
Keywords:Bach Thao goats, concentrates, digestibility, ammonia, volatile fatty acids
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Animal production
Research Field:Animal nutrition
Objective Division:Animal Production and Animal Primary Products
Objective Group:Livestock raising
Objective Field:Goats
UTAS Author:Quan, NH (Mr Quan)
UTAS Author:Lane, PA (Associate Professor Peter Lane)
UTAS Author:Parsons, D (Dr David Parsons)
UTAS Author:Malau-Aduli, AEO (Associate Professor Aduli Malau-Aduli)
ID Code:97797
Year Published:2014
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2015-01-13
Last Modified:2018-01-10

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