Assessment of Farmers’ Perception on Performance of Different Disseminated Breeding Ram and Their Cross to Damot Sore and Merab Badewacho Worda, southern Ethiopia.

Near to 99.99 percent of sheep breeds in southern region is in the traditional way, in which indigenous breeds and types predominate. Indigenous sheep genetic improvement via 50% Dorper crossed ram introduction and community based sheep breed improvement, are found mostly under taken by southern agricultural research centre.50% Dorper crossed ram, Bonga and doygena ram were widely distributed to different agroecology of the region. The objective of this paper is to assess the productive performance of introduced ram based farmer perceptions and to analyze performance of the introduced breeding ram in Damot sore and Merab Badewacho worda southern Ethiopia. Community based improved Doygena ram were preferred for their ability to produce multiple birth, for its attractive coat color, its resistance to health problem in Damot sore while in Merab Badewacho the breed perform less significant.  Bonga ram and its f1 appreciated for fast growth and good adaptability in Merab Badewacho whereas in Damot Sore it could not perform at it is expected. Comparative performances based on farmer view show that Dorper cross were preferred for its docile behavior in Damot sore Worda. Farmer in Damot Sore Worda appreciated the doygena ram for its sexual performance/libido. Most of the respondents reported Dorper and its cross is not easily marketable. It is suggested that in Damot Sore worda more opportunity were existed to introduce improved Doygena ,Bonga  and Dorper ram while in Merab Badewacho efforts should be directed to  develop local sheep selection or introduced Bonga ram to smallholder farmer. Keywords: breeding sheep, farmer perception, Damot Sore, Merab Badewacho.

Productive Performance Evaluation of Dorper Sheep and Its F1 at Areka Agriculyural Research Centre Mente Dubo Breed Evaluation and Distribution Site Southern Ethiopia

The objective of the present study was to evaluate the growth performance of purebred Dorper sheep and its F1 crossbred (50%, upgraded 75%), lamb following crossing pure imported Dorper with local ewe under BED site at the same rearing condition. For these study for crossing purpose Locally reared SNNPR regional native sheep, (Doygena  n=74 ewe,Dawro,n=14 ewe, and and Bonga n=14 ewe were used. Local ewe was crossed with South African Dorper ram following station natural controlled breeding system. Data were collected during 2012-2015. For this study Productive data of four consecutive year data were analyzed. Blood level, lamb sex, birth season, birth year, birth type and ewes’ parity were considered as fixed effects. Data analyses were performed using general linear model procedures of SPSS Version 20. Breed was a significant source of variation .This study confirms Dorper sheep can adapt and had performed better in the study BED site and Crossing with local and up grading could gain heaver birth weight than lower blood level. 75 percent F1 progeny was significantly better weight gain than 50 percent under station rearing condition. The birth weight of Dorper x doygena,Dorper X Bonga and Dorper X Dawro were 2.58±0.59,2.62±0.19,2.42±0.25k.gespectively . Birth weight for pure Dorper lambs born on BED site, for 50 percent, and 75% percent were3.6±0.158 kg, 2.58±0.59 kg respectively. Singles born lamb were significantly (P<0.01) heavier than twins and triplet with an average 3.036±0.680kg, 2.355±0.104 kg and 2.3±0.33kg respectively, but sex did not affect birth weight. The present results suggested that under better management and right  breeding program Dorper sheep could improve the productivity of the local sheep.it can be conclude  that Dorper and its F1 cross with Doygena,Bonga and Dawro sheep were adaptable and perform well at station rearing condition level.it is recommended that indigenous sheep genetic improvement via exotic Dorper sheep crossbreeding X local and production of F1  could be one option of breeding sheep source in side of community based sheep breed genetic improvement. It is also suggested that for better evaluation of the breed further study at farmer level in different agroecology is required. Keywords: Dorper ; performance evaluation; crossing, southern native sheep

Modeling, and FEA of Multi-Plate Clutches by Varying Materials for Optimum Torque Transfer Capacity of TCT System of Green, And Light Vehicles

This paper addresses Modeling and analysis of easily applicable multi-plate clutches to use in twin clutch transmission (TCT) system for green and Light Weight Vehicle. The static and dynamic analysis were developed for a clutch plate by using finite element analysis (FEA). The 3D solid model was done using SOLID WORK 2016 and imported to ANSYS work bench 16 for model analysis. The mathematical modelling was also done using different vastly available materials (i.e. Aluminum alloy 6061, E-Glass Epoxy, and Gray Cast iron); then, by observing the results, comparison was carryout for materials to validate better lining material for multi plate clutches using ANSYS workbench 16 and finally concluded that composite material E-Glass Epoxy has a better friction material for design of multi-plate clutches in TCT system

Ferromagnetic Behavior in Zinc Ferrite Nanoparticles Synthesized using Coprecipitation Technique

Zinc ferrite have been produced and used by humans since long time, however understanding of ZnFe2O4 as a nano structured materials is very useful in order to be used for technological applications. ZnFe2O4 structural, magnetic and electrical properties are different when synthesized using different techniques. Therefore, it would be interesting to investigate the structural and magnetic properties of ZnFe2O4 when in nanosize. In the present work nanocrystalline ZnFe2O4 was synthesized using coprecipitation technique. The structural and magnetic properties of ZnFe2O4 nanopowders were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), dynamic light scattering (DLS), infrared spectroscopy (FTIR) and vibrating sample magnetometer (VSM). The XRD of ZnFe2O4 nanoparticles showed the single phase spinel structure. The average particle size of ZnFe2O4 calculated from XRD was observed to be 45 nm. DLS measurements showed the average particle size to be 42 nm. Further, the phase formation of ZnFe2O4 was confirmed from the IR measurements. The IR spectra showed the bands corresponding to ZnFe2O4. We observed the room temperature ferromagnetic behavior in synthesized ZnFe2O4 nanoparticles which may be due to the random distribution of Zn2+ and Fe3+ at the tetrahedral (A) and octahedral [B] sites. In our future work, we want to investigate the defect induced magnetic properties of ZnFe2O4 nanoparticles which is likely to contribute for ferromagnetic behavior in this material

Anomalous magnetic ordering in PrBa_2Cu_3O_{7-y} single crystals: Evidence for magnetic coupling between the Cu and Pr sublattices

In Al-free PrBa_2Cu_3O_{7-y} single crystals the kink in the temperature dependence of magnetic susceptibility chi_{ab}(T), connected with Pr antiferromagnetic ordering, disappears after field cooling (FC) in a field H || ab-plane. The kink in chi_c(T) remains unchanged after FC in H || c-axis. As a possible explanation, freezing of the Cu magnetic moments, lying in the ab-plane, caused by FC in H || ab, hinders their reorientation and, due to coupling between the Pr and Cu(2) sublattices, ordering of the Pr^{3+} moments. A field induced phase transition and a field dependence of the Pr^{3+} ordering temperature have been found for both H || c and H || ab.Comment: 11 pages (LaTex with elsart.sty), 5 EPS figs. Accepted to Physica

Prevalence and associated factors of neonatal mortality in North Gondar Zone, Northwest Ethiopia

Background: Childhood mortality is often used as a broad indicator of the social development and health conditions of a country. Updated information on neonatal mortality does thus influence policy, improve services and lead to better health for newborns.Objective: To assess the prevalence of neonatal mortality and associated factors in North Gondar Zone, Ethiopia.Methods: Community based cross-sectional study was carried out from November 2009 to January 2010 in North Gondar Zone. Multi-stage sampling was adopted to get respondents and data was collected using structured questionnaires from 3600 mothers who gave live birth during the year 2005 to 2009.Results: Neonatal mortality was found to be 214 out of 4888 live births with the rate of 43.8 per 1000 live births. The number of pregnancies the women, had (AOR =3.76: 95% CI, 2.73- 5.20), maternal morbidity (AOR =5.43: 95% CI, 2.90-10.17) and neonatal illness (AOR = 3.68: 95% CI, 2.41-5.62) were strongly associated with neonatal mortality. Small size neonates at birth were 2 times more likely to die compared with medium sized ones. Compared with illiterate mothers, secondary and above secondary educated mothers reduced the risk of neonatal deaths by 85% (0.04, 0.51) and 90% (0.01, 0.94), respectively.Conclusion: Neonatal mortality was very high when compared with the national data of Ethiopia. Strategies to improve female education, reducing maternal morbidity, limiting the number of pregnancies, early intervention for neonatal illness, prevention and intervention in low birth weight neonates are recommended to reduce neonatal mortality

The Effect of Clerodendrum Myricoides Aqueous Extract on Blood, Liver and Kidney Tissues of Mice

Clerodendrum myricoides is a plant traditionally used for its medicinal value in many parts of the world including Ethiopia. Several human defects are treated in different regions of Ethiopia using the roots, leaves, twigs, fruits and root barks of Clerodendrum myricoides species. The objective of the present study is to investigate the effect of the aqueous extract of Clerodendrum myricoides root on different tissue of mice in chronic administration. The root of the plant were collected in Bale area, Ethiopia dried and crushed into powder and soaked in water to yield aqueous extract. The extract was then administered to mice at doses of 100 and 400mg/kg bw/day for six weeks and 1134mg/kg bw/day (LD50) once. The 400mg/kg bw/day and LD50 treated mice showed hypoactivity (abnormally diminished activity), grooming, prostration (submissively prone position), piloroerection (elevation of hairs) and irritation, while 100mg/kg bw/day treated mice showed no behavioral changes. The dose of 100mg/kg bw/day produced significant weight gain, while 400mg/kg bw/day produced significant weight lost in chronic administration. The extract increased only urea at the dose of 100mg/kg bw/day, whereas it increases most hematological and biochemical parameters at 400mg/kg bw/day. The extract, however did not show significant change in platelet, HGB and MCHC value at both doses. Several histopathological changes in liver and kidney were also observed at both doses of the extract. There were inflammation and hydropic degeneration of hepatocytes at both doses. The LD50 of the extract produced hemorrhages and congestion in the glomeruli of the kidney

Integrated morbidity mapping of lymphatic filariasis and podoconiosis cases in 20 co-endemic districts of Ethiopia

Background: Lymphatic filariasis (LF) and podoconiosis are neglected tropical diseases (NTDs) that pose a significant physical, social and economic burden to endemic communities. Patients affected by the clinical conditions of LF (lymphoedema and hydrocoele) and podoconiosis (lymphoedema) need access to morbidity management and disability prevention (MMDP) services. Clear estimates of the number and location of these patients are essential to the efficient and equitable implementation of MMDP services for both diseases. Methodology/Principle findings: A community-based cross-sectional study was conducted in Ethiopia using the Health Extension Worker (HEW) network to identify all cases of lymphoedema and hydrocoele in 20 woredas (districts) co-endemic for LF and podoconiosis. A total of 612 trained HEWs and 40 supervisors from 20 districts identified 26,123 cases of clinical morbidity. Of these, 24,908 (95.3%) reported cases had leg lymphoedema only, 751 (2.9%) had hydrocoele, 387 (1.5%) had both leg lymphoedema and hydrocoele, and 77 (0.3%) cases had breast lymphoedema. Of those reporting leg lymphoedema, 89.3% reported bilateral lymphoedema. Older age groups were more likely to have a severe stage of disease, have bilateral lymphoedema and to have experienced an acute attack in the last six months. Conclusions/Significance: This study represents the first community-wide, integrated clinical case mapping of both LF and podoconiosis in Ethiopia. It highlights the high number of cases, particularly of leg lymphoedema that could be attributed to either of these diseases. This key clinical information will assist and guide the allocation of resources to where they are needed most

Microwave properties of (PrxY1−x)Ba2Cu3O7−δ(Pr_xY_{1-x})Ba_2Cu_3O_{7-\delta} : Influence of magnetic scattering

We report measurements of the surface impedance $Z_s=R_s+iX_s$ of $(Pr_xY_{1-x})Ba_2Cu_3O_{7-\delta}$, $(x=0,0.15,0.23,0.3,0.4,0.5)$. Increasing $Pr$ concentration leads to some striking results not observed in samples doped by non-magnetic constituents. The three principal features of the $R_s(T)$ data - multiple structure in the transition, a high residual resistance and, at high $Pr$ concentrations, an upturn of the low $T$ data, are all characteristic of the influence of magnetic scattering on superconductivity, and appear to be common to materials where magnetism and superconductivity coexist. The low $T$ behavior of $\lambda (T)$ appears to change from $T$ to $T^4$ at large $Pr$ doping, and provides evidence of the influence of magnetic pairbreaking of the $Pr$.Comment: 5 pages, 3 eps figures, Revtex, 2-column format, uses graphicx. To appear in Physica C. Postscript version also available at http://sagar.physics.neu.edu/preprints.htm