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Articles by D.M. Nyariki
Total Records ( 2 ) for D.M. Nyariki
  K. Mogotsi , M.M. Nyangito and D.M. Nyariki
  Rural Kalahari communities whose livelihoods are heavily dependent on rain-fed agriculture are exposed to increasing intensity and frequency of drought spells. Subsequently their resilience is gradually being eroded and they are left increasingly vulnerable. This study unearths and highlights the myriad measures employed by small scale agro-pastoralists to cope with and adapt to droughts. Such strategies include enrolling in the government’s Labour Intensive Public Works Programme, harvesting larvae of Imbrasia belina (Westwood) moth for consumption and/or sale, supplementary feeding of livestock, providing water for livestock and selling part of the livestock herd while some households moved livestock to better grazing areas within the communal area and sought alternative sources of income outside agriculture. This fluidity and flexibility is necessary to manage the often harsh and unpredictable environment communities operate under. But more importantly, some of these currently used measures could be enhanced to buffer Kalahari agro-pastoralists from anticipated future dry spells in the Southern African region.
  B.K. Korir , R.N. Kinuthia and D.M. Nyariki
  This study was conducted to determine the effects of overnight housing, helminthes control, supplementation and their combinations on average weight gain of weaned Small East African Goats (SEAG) in the semi-arid southeastern rangelands of Kenya. The study also evaluated the economic viability of these goat husbandry practices. About 40 weaned Small East African Goats of similar age (7±1 months) and weights (21±3 kg) were randomly assigned to the following eight treatments: housing (Th); helminthes control (Td); supplementation (Ts); housing+supplementation (Ths); housing+helminthes control (Thd); supplementation+ helminthes control (Tsd); housing+supplementation+helminthes control (Thsd) and control (Tc-traditional husbandry). All the animals were weighed every week and weight gains calculated as the difference between the current and previous weight. The experiment lasted for 18 weeks. All treatment groups consistently exhibited higher average weekly weight gains than the control over the entire trial period. However, the enhanced weight gains were not statistically significant (p<0.05) up to the end of 3rd week. On the 4th week, however all treatment groups except housing, registered significantly (p<0.05) higher weight gains than the control. Overall a combination of all the three treatments (Thsd) had the highest impact on the goats weight gain (6.95 kg) followed by Tsd (6.65 kg). The cost-benefit analysis indicated that the most cost-effective treatment was helminthes control with a Benefit-Cost Ratio (BCR) of 9.45. Supplementation and supplementation combined with helminthes control with 2.35 and 2.75 RBCs, respectively were also cost-effective. The results of this study support the conclusion that housing; control of internal parasites; enhancement of nutrition or a combination of any of these practices has the potential of substantially improving the weight gain rate of weaned Small East African Goats which would translate into increased off-take and ultimately, income.
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