Objectif Tropical, integrated, smallholder farming systems are often constrained by natural resources (land,water,climate,disease resistant crops and animals) and socio-economic conditions(little capital,less educated labour,high input cost and low produce prices). Ruminant productivity (meat, milk, wool, draught) is usually low.Production level depends on low quality roughages, increasingly on fibrous agro-industrial by-products,of which (rice) straws in Asia are abundantly available, and supplementary feeds are expensive (cocentrates, minerals or require space (legumes,tree fodders).(1) The nutritive value of rice straw differs significantly between cultivars, of which a few show a nutritive value sufficiently high to support maintenance requirements.This variation exceeds the increase in nutritive value brought about by costly,urea-ammonia treatment.The accuracy of prediction of this variation bY in-Sacco or in-vitro digestibility parameters showed to be quite lOW,and requires further lab work on factors effecting feed intake. (2)For moderate production levels,available protein and minerals are major constraints,and the efficiency of utilisation of the crop residues largely depends on availability,type,quality and cost of supplements and minerals. Growing or purchasing of supplements and mineral supply require further socio-economic studies of logistics and cost for different beneficiaries. (3)Within (rice) straw cultivars,irrespective of seasons and locations, a significant variation prevails.Additional information is needed on the extent to which this variation is related to the stage of senescene during harvest.(4)Within livestock species,a significant variation in feed intake capacity emerged.The heritability of this trait remains to be established. (5)A positive relationship was found between rice straw intake and the level of excess feed.Sheep showed preference to those parts of rice straw with the lesser nutritive value.The impact of this aspect requires further study in comparion with other straws,and in cattle considered to be less selective.(6)Further,attention will be paid to control of those parasites(worms, flukes,ticks,fleas)that cause considerable losses of production depending on the animal's age,grazing and environmental conditions.(7)The adoption of technologies and the formulation of future basic research priorities are evaluated in connection with economic outcome as constrained by farmer Champ scientifique natural sciencesbiological sciencesbiochemistrybiomoleculesproteinssocial scienceseconomics and businesseconomicsproduction economicsproductivityagricultural sciencesagriculture, forestry, and fisheriesagricultureindustrial cropsfodderagricultural sciencesanimal and dairy sciencedomestic animalsanimal husbandryagricultural sciencesagriculture, forestry, and fisheriesagriculturegrains and oilseedslegumes Programme(s) FP3-STD 3 - Specific research and technological development programme (EEC) in the field of the life sciences and technologies for developing countries, 1990-1994 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur Landbouwuniversiteit Wageningen Contribution de l’UE Aucune donnée Adresse 40,Marijkeweg 6709 PG Wageningen Pays-Bas Voir sur la carte Coût total Aucune donnée Participants (6) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire Baif Development Research Foundation Inde Contribution de l’UE Aucune donnée Adresse Senapati Bapat Marg 411016 Pune Voir sur la carte Coût total Aucune donnée Gadjah Mada University Indonésie Contribution de l’UE Aucune donnée Adresse JL. Agro Karangmalang Bulaksumur 55281 Yogyakarta Voir sur la carte Coût total Aucune donnée ROWETT RESEARCH INSTITUTE Royaume-Uni Contribution de l’UE Aucune donnée Adresse GREENBURN ROAD AB21 9SB ABERDEEN Voir sur la carte Liens Site web Opens in new window Coût total Aucune donnée University of Brawijaya Indonésie Contribution de l’UE Aucune donnée Adresse 161,Jl. Mayjen Haryono 65145 Malang Voir sur la carte Coût total Aucune donnée University of Peradeniya Sri Lanka Contribution de l’UE Aucune donnée Adresse Peradeniya Voir sur la carte Coût total Aucune donnée Veterinary Research Institute Sri Lanka Contribution de l’UE Aucune donnée Adresse 15,Old Galaha Road Peradeniya Voir sur la carte Coût total Aucune donnée