The study of chemical composition and nutritive value

Of animal feed resource in northern Lao PDR,

Luangprabang and Sayaboury province

Abstract

The objectives of this study was to assess the chemical composition and kinetic of gas

production of animal feed resources in the Northern of Laos by using in vitro gas technique.

Twenty seven of feed sample were collected and divided in to three groups according to source

of feedstuffs: group one roughage group there are T7:Xang (Pennisetum purpureum), T9:Yung

(Microstegium ciliatum), T10:Kham (Bambusa spp.), T11:Loa (Miscanthus floridulus),

T17:Phaek (Cymbopogon nardus var.), T18:Salai, T38:Pakhuay (Eleusine indica), T39:Pakuay

yai (Eleusine spp.),T40:Kuaytemala (Tripsacum lascum); group two protein group there are

T21:Jijor, T23:Mayalab (Desmanthus virgatus), T24:Phuthoahai (Centrosema spp.), T25:Todma

(Paederia linearis), T27:Sweet potato white (Ipomoea spp.), T28:Sweet potato yellow (Ipomoea

batatas L.), T29:Mimosa (Mimosa pigra L.), T31:Thuakhue (Arechis spp.), T34:Khuekhon; and

group three fodder tree group there are T8:Porsa (Broussonetia papyrifera), T13:Lai (Bambusa

spp.), T16:Bong (Bambusa spp.), T19:Wild banana leaves (Musa sapientum Linn.),

T22:Somphot (Bauhinia spp.), T26:Due (Ficus spp.), T32:Porhou (Broussonetia spp.),

T33:Luecaena (Leucaena leucucephala), T37:Somseo (Bauhinia malabarica Roxb.). All of

samples they were collected as a part of animal fed in natural condition. Ground through a 1 mm

screen for the chemical analysis and evaluate kinetic of gas production by in vitro gas production

technique. In the roughage group it was found that the potential extent of gas production (d)

shown in table 2 that expressed in ml as highest is T40 and lowest is T17 (182.81 ml, 57.49 ml)

in roughage group; highest is T27 and lowest is T34 (119.84 ml, 58.14 ml) in protein group and

highest is T19 and lowest is T33 (138.07 ml, 54.79 ml) in fodder group respectively.

________________________________________________________________________

Keywords: Feedstuffs, Roughage, Protein, Fodder tree, In vitro gas production technique.

E-mail: viengsakounna@yahoo.com

Acknowledgements

The authors would like to thank for Department of Livestock and Fisheries, Faculty of

Agriculture National University of Laos, Janpan International Research Center for Agricultural

Science (JIRCAS) project and Department of Agriculture and extension in Luanprabang and

Sayaboury provinces for LAB facility, financial, data and sample supported. Special thanks to

Department of Animal Science Faculty of Agriculture Khon Kaen University and Khon Kaen

Animal Nutrition Research and Development Center for providing LAB facility.

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