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Plant species used in traditional dairy processing were studied in three districts (Bosset, Ada, and Gimbichu) in Eastern
Shoa, Ethiopia, from October 2007 to March 2008. A total of 300 smallholders were interviewed using semi-structured questionnaires,
and three focus group discussions were conducted, followed by plants specimen collection and identification. A total of 36
plant species, falling under 24 plant families, were identified. Nearly half of the identified plant species had more than
one use types. Eleven plant species were/are used for washing (scrubbing) dairy utensils, ten plant species for smoking dairy
utensils, 12 plant species in butter making, 15 plant species in ghee making, and five plant species for packaging (wrapping)
butter and cheese. The plant species that had the highest overall citations from each use category were Ocimum hardiense, Olea europaea subspecies africana, Trachyspermum copticum, Curcuma longa, and Croton macrostachyus. The plant species used in the three study districts, representing different agro ecologies, showed some similarities, but
levels of uses differed significantly (P < 0.05). Higher informant citations might indicate their better efficacy, however need to be further investigated to determine
their effects on milk and milk product quality and to make sure that they are innocuous to human and animal health. Finally,
as the present study tried to document natural products used in traditional dairy processing, it could be considered as part
of the global efforts aimed at promoting organic food production. 相似文献
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Theresa Marquardt Hailemariam Temesgen Paul D. Anderson Bianca Eskelson 《Annals of Forest Science》2012,69(7):821-828
? Aims
Six sampling alternatives were examined for their ability to quantify selected attributes of snags and hardwoods in conifer-dominated riparian areas of managed headwater forests in western Oregon.? Methods
Each alternative was simulated 500 times at eight headwater forest locations based on a 0.52-ha square stem map. The alternatives were evaluated based on how well they estimated the number of hardwoods and snags per hectare and their basal area per hectare using root mean square error and percent bias.? Results
In general, 3.6-m wide systematic strips oriented perpendicular to the stream outperformed the other alternatives. However, the variance of all six sampling alternatives was quite high and further research is needed to determine an optimal sampling method for quantifying hardwood and snag attributes in forests dominated by live conifers.? Conclusion
When sampling snag and hardwood as a minor component of the overall forest composition within a riparian area, we suggest using 3.6-m strips perpendicular to the stream. 相似文献15.
Numerous studies have tried to understand and model bubble growth inside dough. Experimental studies are inconvenienced by the methods’ inability to capture the dynamic phenomena. In this paper, a versatile experimental method was developed to allow for macroscopic expansion of wheat dough. The study evaluates expansion of a dough disk under varying: moisture content (40, 41, 42, 43, and 44% wb), leavening acid concentration (30, 40, and 50% db), pressure schemas, pressurizing gas (compressed air and CO2), and lubrication (Teflon® film coating and Pam® aerosol lubricant). Dough expansion increased 22.6% by increasing moisture content from 40 to 44%. Increased baking powder formulation (40% db) was used to enhance initial growth conditions and CO2 production. ‘Pressure pulse’ and ‘pressure vacuum methods’ added pressurization alternatively with full vacuum. The former method included a rest period before vacuum application, and increased expansion by 10.8%. Teflon® and Pam® reduced friction between the dough and acrylic plate and increased the final expansion by 14.7% compared to no lubricant following the ‘standard pressurization method’. ‘Pressure pulse’ and ‘pressure vacuum’ experiments decreased expansion by 28.4 and 38.2%, respectively compared to ‘standard pressurization’ while using Teflon® and Pam®. 相似文献
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Assessment of the nutritional status of indigenous scavenging chickens in Ada’a district,Ethiopia 总被引:1,自引:1,他引:0
Hailemariam Mekonnen D. Mulatu B. Kelay T. Berhan 《Tropical animal health and production》2010,42(1):123-130
The nutritive values of scavenging feed resource bases and effects of season and chickens age on the latter were studied in
smallholder farms in Aad’a, Ethiopia. The study included 210 households and 208 chickens. The mean weight of crop contents
in all age groups ranged from 26.2 to 28.2 g, while it was 29.8 g and 24.7 g in the harvesting and non-harvesting seasons,
respectively. Grains represented 48–49% of the mean weight of crop contents in all age groups and it was significantly higher
(P < 0.05) during the harvesting season than the non-harvesting period in both age groups. Kitchen wastes were next in abundance
(26–29%) and were significantly more abundant in non-harvesting season in growers only and in hens than in growers (P < 0.001).
The dry matter, crude protein, crude fiber, calcium, phosphorous and metabolizable energy levels of crop contents were 91.1–92.5%,
12.9–15.5%, 4.17–7.07%, 0.43–0.90%, 0.28–0.38% and 3404.3–3636.2 Kcal, respectively. Crude protein, calcium and phosphorus
levels were below the requirements for egg production and growth. The scavenging feed resource base was critically deficient
in these nutrients during the harvesting season. As these nutrients are vital for production, supplementary feeds rich in
these nutrients would probably result in increased egg production and optimum growth. 相似文献