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Articles by T.E. Akuja
Total Records ( 3 ) for T.E. Akuja
  G.B. Ashiono , J.O. Ouda , T.E. Akuja , J.K. Kitilit , R.G. Irungu and S. Gatwiku
  The study was conducted to evaluate the nutritive value and productivity of Sweet Potato Vines (SPV) and Sorghum Silage (SS) as feeds for dairy production in the dry highlands of Kenya during the years 2002 and 2003. Data on yield parameters of SPV and SS were collected. Both On-centre and on-farm work involved evaluation of milk production by dairy cattle fed on varying proportions of SPV with SS while demonstration and popularisation of SPV and SS utilization technologies were conducted on farms. Mean grain and dry matter (DM) yields of sorghum were 5.5 and 23 t ha-1, respectively. The Dry Matter (DM), Crude Protein (CP), Neutral Detergent Fibre (NDF) and Acid Detergent Lignin (ADL) contents of SS were 308, 60.3, 622 and 61.6 g kg-1, respectively. Corresponding values of SPV were 160, 131, 341 and 64.5 g kg-1. Average daily milk yield was 3.44 l day-1 when SS alone was fed dairy cows and the yield was 26 l day-1 when a combination of SPV, SS and home made dairy meal was supplied. Improved and sustained milk production in most of the farms was observed when sorghum ratoon was fed as green chop alongside SS especially during the dry season. This showed that sorghum fed together with SPV had great potential in enhancing milk production.
  G.B. Ashiono , S. Gatuiku , P. Mwangi and T.E. Akuja
  This study was conducted using a dual-purpose cold tolerant sorghum E1291 to determine the effect of varying rates on nitrogen (N) and phosphorus (P) on its growth and yield at KARI, Beef Research Centre, Nakuru for two seasons. The experiment was laid out in a 5x5 factorial in a Randomized Complete Block Design (RCBD). Phosphorous (P2O5) (0, 20, 30, 40 and 50 kg ha-1) was applied at sowing and N (0, 20, 30, 40 and 50 kg ha-1) applied when the seedlings were 50 cm in height. Treatment effects were determined using plant height, 1000-seed weight, Crude Protein (CP) and grain yield. Nitrogen and Phosphorous levels beyond 40 and 30 kg ha-1, respectively did not increase plant height, seed weight, crude protein and grain yield. Crude protein content in grain increased from 9.38 to 11.56%, while grain yield increased from 7 to 9 tons ha-1. The optimum sorghum grain yield was attained at 40 kg ha-1 N and 20 kg ha-1 P2O5, respectively. For crude protein the optimum was obtained at 20 N and 30 P kg ha-1, respectively. Overall, this study showed that fertilizers could enhance the production of grain sorghum (Sorghum bicolor (L) Moench) in the dry highlands of Kenya. However, the conventionally recommended rates of 88 kg ha-1 of nitrogen (N) and 94 kg ha-1 of phosphorous (P2O5) proved wasteful and excessive.
  G.B. Ashiono , J.K. Kitilit , K.R.G. Irungu , T.E. Akuja and K. Changwony
  The study was carried out at three locations using six sorghum genotypes in Bomet district, Kenya during the long rains of the years 2001, 2002 and 2003. The objective was to determine the nutrient composition of six sorghum (Sorghum bicolour (L) Moench) varieties across agro-ecological zones. The sorghum varieties selected at KARI-Lanet included E1291, Ikinyaruka, Lan-1, BJ28, E6518 and a local variety. The samples collected were analyzed for DM, OM, CP, NDF and ADF. There were significant differences (p< 0.001) in OM, CP, NDF and ADF at all locations. There were also significant differences (p< 0.001) in nutrient composition among the six varieties. Ikinyaruka had the highest OM across the locations. Mulot had the highest CP while Kapliyo gave the highest amount of ADF among all the varieties. E6518 and Ikinyaruka showed the highest OM, NDF and ADF and were lowest in CP, respectively. Mulot was the best location for all the varieties while BJ28 was the most stable variety with the highest CP and moderate amounts of fibre across all the three locations.
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