29 research outputs found
Un escape al Turquino y la memoria del amor abriendo atajos
No full textIn this article the author presents his memories in the Cuban House of artistic creation La Madriguera, highlighting his experience in a campaign in collaboration with the Union of Young Communists.En este artículo el autor presenta sus memorias en la casa de creación artística cubana La Madriguera, destacando su experiencia en una campaña en colaboración con la Unión de Jóvenes Comunistas
Maedi-Visna: Sero-prevalence and risk factors in sheep population of South Wollo and North Shewa Zones, Ethiopia
No full textMaedi-Visna (MV) is a chronic disease of adult sheep characterised by progressive interstitial pneumonia and other syndromes such as meningo-encephalitis, indurative mastitis, and arthritis. The study was conducted to determine the serological epidemiology and associated risk factors of Maedi-Visna in the highland of the North Shewa and South Wollo zones of the Amhara region, Ethiopia. A total of 807 serum samples were collected randomly from purposely selected areas and examined using an indirect enzyme-linked immunosorbent assay to screen specific antibodies against Maedi-Visna. The data were analysed using logistic regression. The overall seroprevalence of Maedi-Visna was 11.7%. The highest and lowest seroprevalence were in Basona-Werena (19.2) and Legambo (6.1%) districts, respectively. As per peasant associations, the highest and lowest seroprevalence were in the Agricultural Research Centre (63.5%) and Kormargefya (0.8 %), respectively. Despite the variation in prevalence level, the disease was insidiously disseminated to all the other study districts and peasant associations. The final multivariable logistic model identified age OR = 5.04 (95% CI: 1.19–21.43), production system OR = 6.96 (95% CI: 3.79–12.78) and body condition score OR = 10.12 (95% CI: 3.63–28.19) as the most important risk factors in relation to MV seroprevalence. This finding showed a higher prevalence of Maedi-Visna in research centre and ranches, which can be a source of Maedi-Visna virus infection in other parts of sheep producing areas. Therefore, strict and regular screening tests should be carried out during the introduction of new flocks and before the distribution of crossbreed rams, particularly from ranches and research centres to smallholder farmers
Sero-prevalence of Border Disease Virus Antibodies in Recently Introduced Dorper Sheep Flocks at Debre Birhan Agricultural Research Center, Ethiopia
No full textA study was conducted to investigate the serological prevalence of Border Disease Virus (BDV) antibodies in newly introduced Dorper sheep flocks at Debre Birhan Agricultural Research Center (DBARC), Amhara Region, Ethiopia. Blood samples were collected from the jugular vein of 186 sheep in the research center and the serum was decanted and sent to the National Animal Health Diagnostic and Investigation Center, Sebeta, Ethiopia for laboratory examination. All serum samples were examined using blocking ELISA test with a sensitivity of 94.3% and specificity of 93.7% to detect antibodies for BDV. Of these, 55 (29.57%) tested sero-positive and the rest 131 (70.43%) tested sero-negative for BDV antibodies. The sero-prevalence of sheep born in the research center was found at 23.97% (29/121) whereas the sero-prevalence of those sheep imported directly from abroad was found at 40% (26/65). In this research, a higher prevalence of BDV antibodies were recorded in the imported sheep than in the sheep which are born in the research center and the difference in prevalence between the two groups was found statistically significant (P<0.05). Therefore, it is of utmost importance to study the status of the disease from indigenous breeds of sheep and utilize more sensitive tests such as RT-PCR
Eindrapport KenSys - Kennismanagement in de praktijk: Resultaten van de implementatie van een Kennis Systeem bij de Directie Zuid-Holland 1998-2003
No full textAANLEIDING In september 1998 is bij RWS directie Zuid Holland, hoofdgroep planvorming (AP) het KenSys project gestart. Aanleiding voor het starten van het KenSys project was de wens om de kwaliteitsborging van het werk van AP een flinke stimulans te geven. Nieuwe medewerkers hadden vaak geen goede, gemakkelijke toegang tot oudere documenten. Ze waren slecht op de hoogte van beschikbare kennis en ervaring bij de eigen dienst en bij de specialistische diensten. Hierdoor werd bestaande kennis niet goed benut. Het KenSys project bij AP had als doel om met kennismanagement de kwaliteit van het werk te borgen en het gebruik van bestaande kennis te vergroten. AANPAK Het KenSys project is in 5 fasen uitgevoerd: 1. September 1998-September 1999: de verkenningsfase. Creëren van draagvlak op de werkvloer voor kennis borging en kennis delen. Er is onderscheid gemaakt tussen een technologisch en een organisatorisch spoor. Zie ook [Demis rapport, 4-1999]. 2. September 1999-Juli 2000: de ontwerp/pilot fase. Er zijn een digitale boekenkast en smoelenboek geïntroduceerd. Ook is een nulmeting verricht. Zie ook [Demis memo, 5-2000] 3. Augustus 2000-December 2001: de implementatie fase. Implementatie zoekmachine (KennisBrowser) Uitwerking nulmeting. Zie ook [Demis verslag, 7-2001] en [Demis nota, 8-2001]. 4. Januari 2002-Januari 2003: de \u93Inbedden en Oogsten\u94 fase. Oplevering van de KennisBrowser en de ICT-componenten van het KenSys systeem met documentatie. 5. Januari 2003-Juli 2004: de eindafhandeling. Schriftelijke en mondelinge presentaties van de resultaten. Een samenvatting en rapportage van fasen 1 en 2 en een beschrijving van fase 3 is gegeven in [RIKZ rapport, 11-2000]. Dit rapport wordt kort besproken in hoofdstukken 2 , 3 en 4. Een nuttige samenvatting van het gehele project wordt gegeven in [Demis rapport, 2-2003]. RESULTATEN: Na het verkrijgen van draagvlak van medewerkers op de werkvloer in 1998/1999 zijn in een workshop in juni 1999 een negental concrete (goedkope) acties voor organisatorische verbeteringen evenals vier acties voor snelle technologische verbeteringen uitgekozen. Van de organisatorische verbeteringen zijn gelukt: 1. Kwaliteitscontrole rapporten 2. Up-to-date producten overzicht 3. Fysieke tentoonstelling producten APS 4. Digitale smoelenboek en daardoor betere uitwisseling van persoonlijke ervaringen. Niet goed gelukt zijn: 5. Betere benutting bestaande systemen (Geokey, DONAR, Oaseview, OMEGA) 6. Overzicht vragen en benodigde informatie (projectendatabase) 7. Interne kennisoverdracht door lezingen en koffiepraatjes 8. Versterken informele kontakten APS/APV en met klanten en/of kennisleveranciers. 9. Digitale opslag en terugzoeken luchtfoto\u92s. Van de 4 technologische acties (t.b.v. het project \u93Ander Beheer Haringvliet\u94) zijn er twee wel geslaagd: 1. Borgen kennis door opslaan alle relevante documenten in de vorm van een projectsite. 2. Distribureren van kennis (via Website) voor allerlei interne en externe betrokkenen. De andere twee acties: 3. Monitoren status 4. voortgang werkproces en bijdragen aan discussies tussen betrokken partijen zijn niet van de grond gekomen. Dit vanwege onvoldoende draagvlak (wat betreft de monitoring) en onvoldoende technische ondersteuning (wat betreft het distribueren van kennis via een website). Het doel van de fases 3 en 4 was om een kennisportaal te maken met een geïntegreerd smoelenboek, een projectendatabase, een geavanceerde zoekmachine (KennisBrowser) en een digitale boekenkast. Dit heeft de nodige moeite gekost (met name de zoekmachine) maar is toch gelukt. Het systeem draait nu goed bij AP en AV. CONCLUSIES \u95 Er is bij AP een attitude verandering ontstaan. Hierdoor zien medewerkers het nut van kennis delen en borgen in. Het succes van de huidige DZHintranet site is onder meer te verklaren door deze attitude-verandering. \u95 De kennis bij de afdelingen AP en AV is veel toegankelijker geworden door gebruik van het uitgebreide smoelenboek en het (elektronisch) gemakkelijk vinden van grijze en officiële stukken. \u95 De KennisBrowser is een hoogwaardige zoekmachine die snel en eenvoudig associaties binnen documenten zichtbaar kan maken. Het indexeren blijft een aandachtspunt. De KennisBrowser is een PC-applicatie, wat in de toekomst misschien kan botsen met de huidige Web-based gedachten. \u95 Er is bij de afdelingen AP en AV ervaring opgedaan met diverse ICT-tools voor Kennismanagement portalen, te weten: de officiële boekenkast AP, de open boekenkasten AP en AV, de smoelenboeken AP en AVS en de RWS KennisBrowser. Deze ervaringen zijn waardevol geweest. \u95 Een t=1 meting zou (door vergelijking met de wel uitgevoerde t=0 meting) moeten uitwijzen in hoeverre de beschikbare tools worden gebruikt en tot hogere efficiency hebben geleid.KenSy
Survival Analysis of Clinical Cases of Caseous Lymphadenitis of Goats in North Shoa, Ethiopia
No full textCaseous lymphadenitis (CLA) is a bacterial disease of small ruminants causing abscesses in lymph nodes of the body and internal organs. A longitudinal study from 2011 to 2019 was undertaken at Ataye site of Debre Birhan Research Center to estimate the prevalence and incidence, identify associated risk factors, and characterize the causative bacteria. 1025 goats were followed up for the CLA study. Survival analysis was done using SAS 9.4 software program. Biochemical tests and Biolog microbial identification system were used to characterize the bacteria. In the recurrent survival data analysis, there were 1,138 clinical observations and 214 CLA cases (18.8% prevalence) based on clinical diagnosis. The incidence rate was 0.14 cases per animal year. From a total of 214 cases, 130 have occurred once and 84 cases are recurrent cases following first cases. The cumulative failure rates were 68% for newborn and 64% for yearling age groups. The parotid lymph node was the most frequently affected site. Proportional hazard analysis results showed that sex, age, and breed were associated (p<0.05) with CLA incidence. Females, newborn age group, Boer, and Boer × Central Highland Goat (CHG) were at higher risks compared to males, yearling age group, and CHG goats, respectively. The present study indicated that a high incidence rate of CLA in the goat farm is difficult to control and prevent because of its poor response to clinical treatment. Thus, control and prevention should focus on the spread of the disease such as isolation of clinically sick animals, culling, and vaccination of flocks
The Reign
No full textThe Reign is a novel set in a fictional world where, after a cosmic event, those living on the continent of Fieldry’s genetics are altered, creating three new sub-species: the Demis, Anir, and Sentil. Some believe those who are Reign Touched were blessed by the Gods, whereas others cannot forget or forgive the violent afflictions caused by the Demis during the events of the Reign. The story follows our main protagonist Ashryn and a cast of characters who find themselves confronted with two mysteries; the Keeper, a monstrous man, whose true identity remains unknown, and his mission to rid Fieldry of its Demi population by any means, and the sudden disappearance of one of Ashryn’s closest childhood friends. The novel deals with themes of friendship, oppression, love, found family, acceptance, and the will to fight against an unjust world.
Note: This thesis is under a author requested embargo until 2223, after which it will become available in accordance with end of expected copyright protection. This embargo year is intentional and not an error
Comparative efficacy of major anthelmintic against naturally infected Fasciola species infection in local sheep at Debre-Birhan Agricultural Research Center, Ethiopia
No full textThis study aimed to evaluate the efficacy of eight major anthelmintic against Fasciola species in naturally infected sheep. In a randomized trial, 90 sheep were divided into 8 treatment groups of 10 animals each and one untreated control group of ten sheep. Prior to treatment, the animals were examined for Fasciola eggs. After the examination, they were found positive. On day zero, each group was administered to one of the following eight anthelmintic; Albex 10 %, Expitol, Tribex 10 %, Fascinex (Triclabendazole), Zerofen 10%, Albendazole, Ridafluke, and Tetraclozan. Faecal samples from each animal were examined for Fasciola eggs on day zero and then on 7, 10, 14, 21 days and 10 weeks post treatment using the sedimentation technique. Necropsy examination was performed on selected animals for 21 days and 10 weeks of post treatment on selected animals. Ridafluke showed highest efficacy against fascioliasis with 99.6 mature and 94.3 of immature worm count reduction proportion for 21 days post treatment and 91.8 % of adult worm reduction 10 weeks after treatment followed by Tribex 10% solution that showed 96 % and 98.7 % mature and immature worm count reduction, respectively, and 83.6% after 10 weeks post treatments. On the contrary, Fascinex (Triclabendazole) treatment group yielded much lower efficacy with mean 98.3% of mature Fasciola worms being recovered after 10 weeks post treatments. On the other hand, the adult Fasciola worm recovery showed high resistance in all broad spectrums anthelmintic treatment groups where Expitol and Tetraclozan showed 64 % and 63.3 % reduction of adult worms. The findings of this study indicated that the treatment group of Ridafluke and Tribex 10% showed highest efficacy and is a primary drug of choice against Fasciolosis in sheep of the study area
Evaluation of immune response of small ruminant flocks to ovine Pasteurellosis and Peste Des Petits Ruminants vaccines in North Shewa, Ethiopia
No full textThe present study was conducted to evaluate the flock immune response of small ruminants to ovine pasteurellosis Bio type A and Peste des petits ruminants (PPR) vaccines and to determine their effects on the morbidity and mortality of animals due to ovine pasteurellosis and PPR from October 2017 to November 2019 in selected districts of the north Shewa Zone, Ethiopia. A total of 553 serum samples were collected and examined by using the Competitive Enzyme-Linked Immunosorbent Assay and an indirect haemagglutination inhibition test for PPR and ovine pasteurellosis antibodies, respectively. Based on the results, the number of animals with an antibody titer of 1:10 after 28 days and six months of vaccinations of P. multocida Biotype A was 161 (93.1%) and 152 (81.7%), respectively. Also, the positive antibody level (i.e., percent of colour inhibition PI > 50) after 28 days and 12 months of PPRV vaccinations was 82 (86.3%) and 69 (69.7%), respectively. There was a statistical difference (p < 0.001) between the antibody levels after 28 days and six months of vaccination against ovine pasteurellosis and after 28 days and 12 months of vaccination (p < 0.01) for PPRV vaccines. During three consecutive years of intervention, out of a total of 2350 study animals, 500 cases (21.3%) showed respiratory signs, out of which 45 (1.9%) died. The PPR and ovine pasteurellosis vaccines applied in the field were effective in developing antibodies above the threshold herd immunity level of 80% and 70% respectively. Periodic vaccination against ovine pasteurellosis and PPR according to the epidemiology of the diseases results in a significant reduction in morbidity and mortality of small ruminants. Therefore, the current ongoing efforts to control ovine pasteurellosis and PPR of small ruminants through vaccination should be encouraged and strict sero-surveillance and monitoring of these diseases should be done side by side
Evaluation of Two Estrus Synchronization Protocols in Dairy Cattle at North Shoa Zone Ethiopia
No full textThis study was initiated to change the hesitation of the farmer on the effectiveness of estrus synchronization under their (Ethiopian small holder) livestock management system using two synchronization protocols. Non-pregnant animals with normal reproductive tract and that fulfilled the preconditions for estrus synchronization were considered for treatment & assigned into two synchronization protocols (single PGF2α injection; and double PGF2α injection). Among 94 (27 heifer and 67 cows) synchronized cows using one and two injections of PGF2α protocols 26 heifers and 63 cows (89/94.7%) were exhibited estrus by visual observation and rectal palpation the remaining 5 (5.3%) did not illustrate heat. The overall pregnancy was 59.6 % with overall birth 94.3 %. High pregnancy was obtained in the double injection of PGF2α treatment group (63.1 %) than animals treated with one shot protocol 55.8 % there were statistically significant difference between treatments (p<0.05). Higher pregnancy was obtained from cross breed animals than local breeds. More over most of the animals come to estrus greater than 96 hrs. There was also significant difference between technicians on detecting the CL and conception. The estrus response, conception rate, pregnancy rate and calving rate was higher in both protocols so producers or farmers can use either the two protocols to achieve remarkable result but tight follow-ups and more resources are need to be exploited at farmer level
