Resultados de búsqueda - Cattle. Periodicals.

Förändrad djurhantering på gården för att uppnå minskad stress för nötkreatur på slakteriet por Johansson, Linnéa

Comparison of the transmission of Theileria parva between different instars of Rhipicephalus appendiculatus por Ochanda, H., Young, A.S., Wells, C., Medley, G.F., Perry, Brian D.

“…The transmission of Theileria parva by nymphal and adult Rhipicephalus appendiculatus was compared by the assessment of salivary gland infections in tick batches fed on the same group of infected cattle at the same time. When larval and nymphal R. appendiculatus Muguga ticks were fed concurrently on cattle undergoing acute infection with T. parva Muguga, the resultant nymphae developed a slightly lower prevalence of infection than did the adult ticks. …”
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Niveles inmunitarios contra fiebre aftosa en bovinos del Urabá antioqueño 1978 - 1985 por Barrera Velandia, José del Carmen, Sánchez M., Camilo, de Bustos, Myriam Q., Cifuentes A., Nelson, González, Manuel S., Jiménez T., José M.

“…This paper discribes the results of the protection status of cattle against Foot-and- Mouth Disease (FMD) found during the 1978 to 1985 period. …”
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Predicted changes in herd immunity levels against Rift Valley fever virus in livestock following a natural exposure por Gachohi, John M., Bett, Bernard K.

“…Introduction Rift Valley fever virus (RVFV) transmission gets elevated following periods of excessive and persistent rainfall. The average inter-epizootic period in Kenya has been estimated to be 3.6 years (range 1–7 years). …”
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A trans-disciplinary study on the health risks of cryptosporidiosis from dairy systems in Dagoretti, Nairobi, Kenya: Study background and farming system characteristics por Kang'ethe, Erastus K., Kimani, V.N., McDermott, B., Grace, Delia, Lang'at, A.K., Kiragu, M.W., Karanja, N., Njehu, A.N., Randolph, Thomas F., Mbugua, G., Irungu, T.W., Ombutu, P.

“…There was a high turnover of 10 % of the cattle population in the 3-month period of the study. …”
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A simulation model for Rift Valley fever transmission in Kenya por Gachohi, John M.

“…The simulation model comprised of two hosts (cattle and sheep) and two vectors (Aedes and Culex mosquito species). …”
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Farmers’ perceptions on trypanosomosis and trypanotolerance character of the taurine Sheko por Taye, T.D., Ayalew, W., Hegde, P.B.

“…Our findings showed that trypanosomosis was the most frequently reported cattle disease in the Bench Maji Zone. Accordingly, 76.7% of the farmers reported the epidemiological importance of trypanosomosis, and they also noted that trypanosomosis on average accounted for 63.0% of annualized cattle death. …”
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Long-term occurrence of multiple drug resistance in Trypanosoma congolense at Ghibe, Ethiopia por Peregrine, A.S., Majiwa, Phelix A.O., Rowlands, G.J.

“…However the long-term stability of such resistance is unclear and has therefore been investigated over a 4-year period at a site in Ethiopia. The result shows that there was a high prevalence of multiple-drug resistant T. congolense populations in cattle at Ghibe in both 1989 and 1993. …”
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Drivers of land use change and household determinants of sustainability in smallholder farming systems of Eastern Uganda por Ebanyat, Peter, Ridder, N.A. de, Jager, A. de, Delve, Robert J., Bekunda, Mateete A., Giller, Kenneth E.

“…Balances of N, P and K were all positive for larger farms (LF) that had more cattle and derived a larger proportion of their income from off-farm activities, whereas on the medium farms (MF), small farms with cattle (SF1) and without cattle (SF2) balances were mostly negative. …”
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Mitigation of the impacts of Rift Valley fever through targeted vaccination strategies por Gachohi, John M., Bett, Bernard K.

“…A decision-support tool for prevention and control of RVF in the Greater Horn of Africa identifies a series of events that indicates increasing risk of an outbreak and matches interventions to each event. Using a 2-host (cattle and sheep) and 2-vector (Aedes and Culex species) RVF virus transmission model, we simulated the impact of vaccinating either 50% or 75% of the host population implemented over a period of 11 and 15 days respectively at different time points identified in the tool. …”
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Agronomic evaluation of 25 accessions of Clitoria ternatea in time of maximum and minimum rainfall in Colombia por Sotelo, Mauricio E., Peters, Michael, Arango, Jacobo, Cardoso Arango, Juan Andrés

“…Most of this area is in extensive grazing systems under native pastures that, although of good nutritional quality, have a limited supply of forage, especially in few critical areas. This has caused cattle ranching to become a seasonal activity in the tropics, since in periods of low rainfall, ranchers struggle so that their animals do not lose weight and, in the worst case, because they do not die. …”
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Rift Valley fever in Kenyan pastoral livestock: Individual-based demographic model to analyse the impact of Rift Valley fever por Fuhrimann, S., Kimani, T., Hansen, F., Bett, Bernard K., Zinsstag, Jakob, Schelling, E.

“…After the 2006/2007 outbreak, 2%, 40%, 30% and less than 1% of cattle, sheep, goats and camels acquired immunity. …”
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Parametres de reproduction des bovins zebu du Malawi por Kamwanja, L.A.

“…Describes part of a series of studies aimed at characterizing the pre-pubertal reproductive performance of the Malawi Zebu cattle, monitoring 10 Malawi Zebu heifers over a 15-month period starting when the animals attained 15 months of age and ending when they were 30 months old; and 10 multiparous Malawi Zebu X Brahman cows were monitored for estrus immediately post partum until they were bred; w. partic. ref. to uterine involution, calving to first estrus, calving to first ovulation, calving to conception, calving interval, first estrus-conception, and to days to first rise in progesterone.…”
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Anthrax hotspot mapping in Kenya support establishing a sustainable two-phase elimination program targeting less than 6% of the country landmass por Gachohi, J., Bett, Bernard K., Otieno, Fredrick, Mogoa, E., Njoki, P., Muturi, Mathew, Mwatondo, Athman, Osoro, E., Ngere, I., Dawa, J., Nasimiyu, C., Oyas, H., Njagi, O., Canfield, S., Blackburn, J., Njenga, K.

“…Modelling targeted annual vaccination of 90% cattle population in hotspot administrative wards reduced > 23,000 human exposures. …”
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Mapping the economic benefits to livestock keepers from intervening against bovine trypanosomosis in Eastern Africa por Shaw, A.P.M., Cecchi, G., Wint, G.R.W., Mattioli, R.C., Robinson, Timothy P.

“…The herd models were based on publications and reports on cattle productivity (fertility, mortality, yields, sales), from which the income from, and growth of cattle populations were estimated over a twenty-year period. …”
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Indicadores fisiológicos de adaptación en tres razas de bovinos criollos colombianos por Correa García, Zoilo Andrés, Campos Gaona, Rómulo, Florez Diaz, Hernando

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Pathogenicity of Theileria parva is influenced by the host cell type infected by the parasite por Morrison, W. Ivan, MacHugh, Niall D., Lalor, P.A.

“…The initial approach, which involved inoculation of cattle with autologous cloned cell lines of different phenotypes, failed to resolve the issue, because the prolonged period of culture required to clone and characterize the cell lines resulted in attenuation of the cells. …”
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Mjölkkors liggbeteende i olika miljöer por Ljungberg, Therese

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Habitat and plant selection of livestock in a fire-managed Afro-alpine heathland in Ethiopia por Gustafsson, Jenny

“…My purpose of this study was to analyze habitat use and plant selection of free-ranging livestock in these burnt and patchy sub-alpine Erica environments. The cattle's foraging behavior and selection of forage species were recorded continuously during 7 minute observation periods. …”
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Estimating the costs of tsetse control options: An example for Uganda por Shaw, A.P.M., Torr, S.J., Waiswa, C., Cecchi, G., Wint, G.R.W., Mattioli, R.C., Robinson, Timothy P.

“…The lower costs compared favourably with the regular treatment of cattle with prophylactic trypanocides (US$3862 per km2 assuming four doses per annum at 45 cattle per km2). …”
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