True metabolizable energy values of cassava tuber and leaf meals for poultry

V. Ravindran, E.T. Kornegay, L.M. Potter, K.E. Webb, Jr., C.M. Parsons

Abstract


True metabolizable energy (TME) values of cassava tuber meal and cassava leaf meal were determined using 18 adult Single Comb White Leghorn roosters. Afters 24 h of fasting, 6 roosters were force-fed 25 g of each of these feedstuffs. Six roosters were fasted for another 48 h and served as negative controls. Excreta were collected for 2 consecutive 24 h periods. Length of collection period had no effect on the TME value of cassava tuber meal, indicating that a 24 h collection period time was adequate. A collection period of ? 48 h, however, was required for roosters force-fed cassava leaf meal. The mean TME values (dry basis) of cassava tuber meal and cassava leaf meal were determined to be 15.73 ± 0.25 and 8.33 ± 1.17 MJ kg-1, respectively.

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