Browsing by Author "Egyir, I.K."
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Item Performance of Djallonké sheep fed untreated rice straw supplemented with urea-molasses block (UMB): II. Substitution of wheat flour in UMB with gari or kokonte flour(Ghana Society of Animal Production, 2010) Egyir, I.K.; Amaning-Kwarteng, K.; Adjorlolo, L.K.This study was designed to compare the effect of three sources of starch in urea molasses block fed to sheep. The urea molasses-block (UMB) contained either wheat flour (UMBW), or kokonte (dried cassava meal; UMBK) or gari (partially destarched cassava product; UMBG). All sheep were fed on a basal diet of untreated rice straw ad libitum and allowed to lick the urea-molasses blocks freely. Voluntary feed intake and weight gain, rumen pH and in sacco rumen degradation of the basal diet were measured using Djallonké sheep. Total dry matter and crude protein intakes were similar for UMBW and UMBK, both of which were lower (p<0.05) than for UMBG. Rumen pH decreased sharply for UMBW and UMBK but was more stable for UMBG. This was related to the changes in rumen degradation which showed greater improvement for the animals on UMBG than for those on UMBW and UMBK. It was concluded that UMBG was a better supplement than either UMBW or UMBK when sheep are fed rice straw. Gari which is a processed cassava meal with higher fibre content than dried cassava meal (kokonte) or wheat flour was the best source of starch in the formulation of urea-molasses blocks.Item Performance of Djallonké sheep fed untreated rice straw supplemented with urea-molasses block: I. Comparison with urea-ammoniated rice straw(Ghana Society of Animal Production, 2010) Amaning-Kwarteng, K.; Egyir, I.K.; Adjorlolo, L.K.This study sought to compare the effects of supplementing untreated rice straw with urea molasses blocks (UMB) with feeding urea ammoniated rice straw without supplementation in Djallonké sheep. Two trials were undertaken; a growth trial and a digestibility trial. The growth trial involved twelve growing D’jallonké wethers which were randomly assigned to three diets; untreated rice straw (URS), urea ammoniated rice straw (ARS) or untreated rice straw supplemented with urea molasses block (SMB). A digestibility trial was carried out involving six mature wethers which were kept in metabolism cages and were assigned to the test diets in a 3 x 3 Latin square design with two replicates each. Ammoniation resulted in a 2.2 fold increase in crude protein of rice straw and decreased neutral detergent fibre (NDF) and hemicellulose content of the straw by 10.9% and 48.5% respectively. Voluntary dry matter intake was higher (P<0.05) for ARS than for URS but similar (P>0.05) to SMB. Similar trends were observed for dry matter digestibility and average daily gain. It was concluded that both ammoniation of rice straw and supplementation of untreated rice straw with UMB significantly improved the nutritive value of the untreated rice straw. These two treatments, however, did not differ from each other in terms of average daily gain and digestibility.Item Studies On the Utilisation of Urea- Ammoniated Straw and Urea-Molasses Block Supplement as Dry Season Feedstuffs by Sheep in Ghana(University of Ghana, 1994-08) Egyir, I.K.; Fianu, F.K.; Amaning-Kwarteng, K.; Fleischer, J.E.; University of Ghana, College of Basic and Applied Sciences, School of Agriculture, Department of Animal ScienceThree experiments were undertaken to evaluate the nutritive value of ureaammoniated rice straw and urea-molasses block supplement for dry season feeding to sheep. Experiment One compared the feeding value of untreated straw (US), ammoniated straw (AS) and urea-molasses block supplemented straw (UMBS). Three fistulated and three "intact" sheep were assigned to a two 3 x 3 Latin Square designed. Parameters investigated include dry matter intake, lightweight changes and nutrient digestibilities. The difference between the dry matter intake of AS (768.58g/d) and UMBS (707.24g/d) was significant (P < 0 .0 5 ) and both were superior to US (555.29g/d). Both intake and apparent digestibility o f crude protein were higher (P < 0 .0 5 ) for AS (48.55 and 73.88) than UMBS (27.55 and 67.01). Similarly, cellulose digestibility was higher in AS (68.4 ) than UMBS (60.03). However, the two diets did not differ in intake or 1 digestibility pf other nutrients. Average daily gari (ADC) were 10.70g/d, 72.0g/d and 68.92g/d for US, AS and UMBS respectively. The difference were not significant (P > 0 .0 5 ) between AS and UMBS. Both were however, significantly (P < 0 .0 5 ) different from US. In situ studies in Experiment Two indicated that the extent and rate of DM and NDF degradation were higher with UMBS than AS and US. The values for crude protein were however highest with AS followed by UMBS. Gari and kokonte were used in place of wheat flour as slow degrading dietary \, energy source in the urea-molasses block in Experiment Three. The crude fibre content of the blocks were 340g/kg, 270g/kg and 300g/kg for Gari contained block (GB) kokonte contained blipck (KB) and Wheat Flour contained block (WB) respectively. The higher 1 fibre content o f GB promoted very high intake of both block and straw. The intakes were 0.81 and 0.78 kg/d for GB, 0.50 and 0.47 kg/d for KB and 0.47 and 0.54 kg/d for WB. GB accordingly recorded the best feed conversion efficiency which resulted in the highest growth rate of the sheep.