Fattening cattle in Lao PDR with cassava pulpPhanthavong Vongsamphanh, Khamla Sengdavong1 and T R Preston2Ministry of Agriculture and Forestry, Lao PDRvongsamphanh2015@gmail.com1 Soukanya Farm, 19 km, Nongboua Village, Xaythany District , Vientiane Capital2 Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria (CIPAV),Carrera 25 No 6-62 Cali, ColombiaSource: Phanthavong V, Khamla S and Preston T R 2016: Fattening cattle in Lao PDR with cassava pulp. Livestock Research for Rural Development. Volume 28, Article #10. Retrieved October 6, 2016, from http://www.lrrd.org/lrrd28/1/phan28010.htmlAbstractEight local "Yellow" cattle (range 78 to 108 kg) were allocated according to live weight to two groups each of four animals. They were fed a basal diet of ad libitum ensiled cassava pulp enriched with urea at the rate of 3% of the cassava pulp dry matter (DM). The experiment was done in the dry season (April-May 2015). Fresh Brewer’s grains were used as a source of "bypass" protein. Rice straw was given as a source of “roughage”. A sulphur-rich mineral mixture was provided ad libitum. The urea was dissolved in water and sprayed on the cassava pulp. Brewers’ grains and rice straw were offered separately.The 0.66 kg/day average growth rates over the 4 months of fattening, with a DM feed conversion of 6.67, confirmed that ensiled cassava pulp could be the basis of a successful diet for the intensive fattening of local "Yellow" cattle in Lao PDR. Key words: Brewer's grains, bypass protein, rice straw, sulphur, ureaIntroductionCassava has become a major crop in Lao PDR mainly because of the export of starch that is extracted from the cassava root. There are five cassava starch factories with total planted area of 60,475 ha, giving an average yield of fresh roots of 27 tonnes/ha. Annual production is of the order of 1.6 million tonnes (Department of Agriculture 2014). The cassava for the starch factory in Nashaw village, Pakngum District in Vientiane Capital is supplied by 235 households in 85 villages with total cassava harvested area of 5,207 ha producing 100.000 tonnes per year of cassava roots. During the 6 -7 month harvest season from October to March-April (the dry season in Lao PDR) this amounts to 480 tonnes of roots daily. The byproduct remaining after starch extraction, known as cassava pulp, represents from 10 to 15% of the original weight of fresh roots. Over the past 4 years, very little of the cassava pulp was bought by farmers and almost all of it had been stored in a pit adjacent to the factory
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