Browsing by Author "Muhairwa, A. P"

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Implementing poultry vaccination and biosecurity at the village level in Tanzania: a social strategy to promote health in free-range poultry populations
(ResearchGate, 2009-08) Muhairwa, A. P; Mtambo, M. M. A; Mwamhehe, H; Msago, A; Mlozi, M. R. S; Cardona, C.J; Msoffe, Peter L. M.; Bunn, David
A social strategy was tested for implement- ing Newcastle disease (ND) vaccination and biosecur- ity improvements among free-ranging chicken at village level in Tanzania. In addition to training the local poultry vaccinators, data recorders and poultry- keepers, the strategy involved training and empowering leaders at the district, ward and village level. The trainings covered poultry health, management, and marketing of village chickens, with an emphasis on ND vaccination and improving biosecurity against avian influenza (AI), The study sites included villages in one ward in each of three each three districts (Iringa, Mtwara-Mikindani, and Mvomero) of mainland Tan- zania. Ninety-six local leaders at district level and 101 leaders at ward levels were trained. In addition, 196farmers (households) were trained, as well as 86 vaccinators and 26 data recorders. Data recorders were also trained as poultry first aid workers. ND vaccina- tion was conducted by the vaccinators, supervised by their local leaders with technical assistance from veterinarians. A total of 158,343 village chickens were vaccinated in three rounds of vaccination three months apart. The training and empowerment of local leaders and local implementers was the key element for success as it fostered the feeling of local ownership of the program and prevented conflicts with other development activities within the villages. We con- clude that most animal health programs will increase their odds of success by involving local leaders and by addressing the current challenges facing the
Intestinal protozoan parasites of pigs reared under different management systems in Morogoro, Tanzania
(Taylor and Francis, 1996-07) Muhairwa, A. P; Mtambo, M. M.A; Kambarage, D. M; Esrony, K; Kusiluka, L. J.M
Sixty three piggery units with a total herd size of 424 pigs i n the small-scale and semi-intensive management systents from semi arid and tropical highlund areas of Morogoro region were screened for intestinal protozoan parasites. Thirtysix percent of the screened animals were positive for eimeriosis and 7.8% for cryptosporidiosis. Prevalences of eimeriosis in the semi-intensive and sntall-scale management systems were 22% and 48%, respectively. High prevalences of eimeriosis and cryptosporidiosis (60% and 25%, respectively) were observed in the tropical highland climate area (Mgeta) and low rates (26% and 0.3%, respectively) were evident i n the semi-arid zone. Ninety five per cent of infected pigs excreted between 100 and 5000 OPG and five per cent were excreting more
Investigations on the carrier rate of Pasteurella multocida in healthy commercial poultry flocks and flocks affected by fowl cholera
(Taylor and Francis, 2000) Muhairwa, A. P; Christensen, J. P; Bisgaard, M
Twenty flocks of web-footed birds (Pekin and Muscovy ducks and geese) and eight flocks of chickens raised under intensive management were examined for the presence of carriers of Pasteurella multocida. Five hundred and seventy-eight web-footed birds and 240 chickens from healthy flocks, as well as from flocks affected by fowl cholera, were investigated. A total of 135 isolates (80 from healthy flocks and 55 from flocks affected by fowl cholera) were obtained from the pharyngeal and cloacal mucosae after mouse passage (134 isolates) and culture in selective medium (one isolate). Thirty-five percent (7/20) of the flocks of web-footed birds and 38% (3/8) of chicken flocks had birds carrying P. multocida in the pharynx and/or cloaca. Birds from flocks affected by fowl cholera carried P. multocida at a significantly higher prevalence in the mucosa of the cloaca (P < 0.001) compared with the pharynx, while the opposite was observed in birds from healthy flocks. Extended phenotypic characterization confirmed the presence of P. multocida ssp. multocida, P. multocida ssp. septica and P. multocida ssp. gallicida in the flocks examined. P. multocida ssp. gallicida was exclusively isolated from Pekin ducks, while P. multocida ssp. multocida and P. multocida ssp. septica were obtained from chickens as well as web-footed birds. Each flock was shown to be infected by a single phenotypic clone, but some clones were found in more than one flock. A different clone was found in each of four outbreaks of fowl cholera on one of the farms in the preceding 2 years. Two genotypic and phenotypic clones each of P. multocida ssp. multocida and P. multocida ssp. septica were found. This observation indicated that outbreaks are usually clonal and that elimination of P. multocida from infected farms is possible. The results suggest that healthy poultry, in addition to convalescent carriers, may also be carriers of P. multocida. However, the virulence of P. multocida isolates and resistance of carriers to clinical infection needs to be examined. This is the first report of isolation of P. multocida from the cloacal mucosa of apparently healthy domestic poultry. Sampling of the cloaca appeared to be more sensitive for detecting carriers of P. multocida. Although selective medium was used only to a limited extent, the results suggested that mouse inoculation was a more efficient method of isolating P. multocida from poultry than the use of selective media.
Occurrence of parasites of pigeons in Morogoro Municipality of Tanzania
(2017-07) Chiwanga, G. H; Muhairwa, A. P; Kassuku, A. A; Msoffe, P. L. M
A study was conducted to assess the prevalence of parasites of domestic pigeons in Morogoro Municipality, Tanzania. 100 nestlings and 100 adult pigeons were examined for the presence of ecto and endoparasites. 159 pigeons (79.5%) were infected with one or more species of gastrointestinal helminthes, 124 (62%) had one or more ectoparasites and 74 (37%) were infected with haemoparasites. The 3 subfamilies represented two cestodes and one nematode, whereas no trematodes were found. Three species of helminthes Raillietina tetragona (6%), Raillietina echinobothrida (63%) and Ascaridia galli (15.5%) were identified. Three different species of ectoparasites (Pseudolynchia canariensis (61.5%), Menocanthus stramineus (0.5%) and Menopon gallinae (0.5%), and 1 haemoparasite species Haemoproteus columbae were identified. Prevalence of gastrointestinal worms was significantly higher (P < 0.001) in adults than in nestlings. Nestlings appeared to be less susceptible to gastrointestinal cestodes but more susceptible to nematodes compared with adults. P. canariensis were found in both nestlings and adults pigeons while M. stramineus and M. gallinae were found in adult only. Prevalence of ectoparasites was not statistically significant (P < 1) between the two age groups. The prevalence of H. columbae was statistically higher (P < 0.001) in adults. Further studies are recommended in assessing the effects of the parasites on the pigeons’ health and production.
Prevalence of canine gastrointestinal parasites in Morogoro, Tanzania
(Taylor and Francis, 1996-07) Muhairwa, A. P; Mtambo, M. M.A; Kusiluka, L. J.M; Maeda, G. E; Kambarage, D. M; Makene, V. W
Out of 235 domestic dogs from Morogoro municipality and Mgeta area in Morogoro region coproscopically screened for gastrointestinal parasitic infections, 174 (74%) were found positive for one or the other parasite. Ancylostonza caninunz was the most common parasite (72%). Protozoan parasites and other helminths were less prevalent (4%). The prevalence of gastrointestinal parasitism was significantly higher (P<0.05) in dogs <6 months (prkppies) than in adults with no sex effect.
Seroprevalence of canine leptospirosis, in urban and periurban, Morogoro, Tanzania
(Academic Journals, 2018-04-23) Said, K; Bakari, G. G; Machang’u, R; Katakweba, A. S; Muhairwa, A. P
A cross-sectional study was carried out in the Morogoro region, Tanzania, to determine the seroprevalence of canine Leptospira exposure. A total of 232 sera were collected from apparently healthy dogs in Mvomero, Morogoro Urban and Morogoro Rural districts. The microscopic agglutination test (MAT) was performed following standard procedure using panel of six Leptospira serovars. Within the districts, positive reactions against five serovars were detected: Sokoine (4.3%); Pomona (4.3%); Lora (3.0%); Grippotyphosa (2.2%), and Kenya (0.9%). The overall seroprevalence was found to be 9.5%. Male dogs were at significantly greater risk than the female dogs (p < 0.05); but no significant difference in prevalence was observed with respect to age and breed (p>0.05). The growing urbanization, which allows high interaction between different maintenance hosts, may cause infection spill over and consequently a rising prevalence. The presence of Leptospira antibodies suggests that leptospirosis is common in this study area. Therefore, further serological surveys followed by isolation and identification of isolates in this study area and other areas of the country need to be undertaken to report infective serovars in canine population.
A study of ecto- and endo-parasites of domestic pigeons in Morogoro Municipality, Tanzania
(Academic Journals, 2010) Msoffe, P. L. M; Muhairwa, A. P; Chiwanga, G. H; Kassuku, A
A study was conducted to assess the prevalence of parasites of domestic pigeons in Morogoro Municipality, Tanzania. 100 nestlings and 100 adult pigeons were examined for the presence of ecto and endoparasites. 159 pigeons (79.5%) were infected with one or more species of gastrointestinal helminthes, 124 (62%) had one or more ectoparasites and 74 (37%) were infected with haemoparasites. The 3 subfamilies represented two cestodes and one nematode, whereas no trematodes were found. Three species of helminthes Raillietina tetragona (6%), Raillietina echinobothrida (63%) and Ascaridia galli (15.5%) were identified. Three different species of ectoparasites (Pseudolynchia canariensis (61.5%), Menocanthus stramineus (0.5%) and Menopon gallinae (0.5%), and 1 haemoparasite species Haemoproteus columbae were identified. Prevalence of gastrointestinal worms was significantly higher (P < 0.001) in adults than in nestlings. Nestlings appeared to be less susceptible to gastrointestinal cestodes but more susceptible to nematodes compared with adults. P. canariensis were found in both nestlings and adults pigeons while M. stramineus and M. gallinae were found in adult only. Prevalence of ectoparasites was not statistically significant (P < 1) between the two age groups. The prevalence of H. columbae was statistically higher (P < 0.001) in adults. Further studies are recommended in assessing the effects of the parasites on the pigeons’ health and production.