Welcome to the Centre for Livestock and Agriculture Development


1    9. Research on the use of cassava leaves for livestock feeding in Cambodia

Authors: Khieu Borin, Chhay Ty, R. B. Ogle and T. R. Preston, 2005.
The Regional Workshop on “The Use of Cassava Roots and Leaves for On-Farm Animal Feeding”, Hue, Vietnam. January 17-19, 2005.

Abstract: Cassava is commonly grown for tuber production only. However, with improved management practices, including nutrient application, it could be a potentially valuable perennial forage, supplying protein for both ruminant and monogastric animals. The total forage dry matter (DM) yield of a long-term cassava variety (LT) was 23% higher when 350 kg N per ha-1 year-1 of effluent from a biodigester loaded pig manure was applied, as compared with the yield from effluent originating from cow manure. Intercropping did not affect cassava (short-term variety, ST) DM and crude protein (CP) yields but the total DM and CP yields were increased by 43 and 39% in D. virgatus and G. sepium intercrops, respectively. The hydrogen cyanide levels of the fresh cassava leaves of ST (545 mg/kg DM) and LT (408 mg/kg DM) varieties were reduced by 63% and 33%, respectively, after sun-drying and by 77% and 78%, respectively, after ensiling. Foliage from cassava supported higher growth rate in goats and lower faecal worm egg counts, compared to those fed natural grass. The daily weight gains of growing cattle were 210 and 302g with supplementation of cassava leaves without and with oil, respectively, compared with 53 and 124g for those fed only rice straw and rice straw plus an oil drench, respectively. Local pigs fed a mixture of fresh cassava leaves and water spinach (35:65) improved feed intake and increased digestibility of DM, OM, CF and N, and higher N-retention and daily weight gain than pigs fed fresh cassava leaves or water spinach alone. In another study it was found that ST and LT cassava varieties were equally efficiently utilized by pigs and the digestibility of DM and dietary components of cassava leaf silage was higher than in sun-dried leaves. Mong Cai (MC) pigs digested the dietary fibre in cassava leaves more efficiently than Large White x Yorkshire (LxY) pigs, whereas the LxY pigs utilized N more efficiently than the MC pigs. The coefficient of total tract apparent digestibility of DM and intake of digestible DM decreased with increased dietary cassava leaf meal (CLM) for local and exotic ducks and chickens. The weights and dimensions of the gastrointestinal tract and organs of the birds increased with increased CLM in the diets.


<< Back