Effects of Cassava Flour Industry By-products in Diets on Finishing Lambs Productive Performance

Abstract

This study was conducted to evaluate the effects of cassava flour industry by-products combined with roughage sources in finishing lamb diet on productive performance. Sixteen crossbreed lambs (Santa Inês x Dorper x Native) were allotted into 4 treatment combinations according to a 2x2 factorial in completely randomized design. Experimental treatments were 30% fermented cassava peel (FCPE) + untreated rice straw (URS), (T1), 30% FCPE + 5% Urea-treated rice straw (UTS), (T2), 30% fermented cassava pulp (FCPU) + URS, (T3) and 30% FCPU + UTS, (T4) respectively. The result showed that dry matter intake (DMI) as kg/d and a percentage of live weight, digestibility of dry matter (DM), and average daily gain (ADG) were not significantly different among the treatments (P>0.05). However, dry matter intake as percentage of live weight obtained in lambs fed diet supplemented with 5% UTS was higher than URS (149.75and 72.61 g/head/d respectively; P<0.01), and DMI of concentrate diet containing 30% FCPE was higher than 30% FCPU (843.13 and 637.84 g/head/d respectively; P<0.05). The feed cost per gain showed that the lamb fed UTS tended to be lower than the group fed URS (P<0.1). Therefore, the results of experiment suggested that using cassava flour industry by-products in the fermented form in finishing lamb diet with UTS as roughage source could be an appropriated feeding approach.