منابع مشابه
Gearing effects of the patella (knee extensor muscle sesamoid) of the helmeted guineafowl during terrestrial locomotion
Human patellae (kneecaps) are thought to act as gears, altering the mechanical advantage of knee extensor muscles during running. Similar sesamoids have evolved in the knee extensor tendon independently in birds, but it is unknown if these also affect the mechanical advantage of knee extensors. Here, we examine the mechanics of the patellofemoral joint in the helmeted guineafowl Numida meleagri...
متن کاملDescription of Aegyptianella botuliformis n. sp. (Rickettsiales: Anaplasmataceae) from the helmeted guineafowl, Numida meleagris.
Aegyptianella botuliformis n. sp. (Rickettsiales: Anaplasmataceae) isolated from helmeted guineafowls Numida meleagris from the Kruger National Park is described. The rickettsia occurs within a membrane-bound vacuole in the cytoplasm of erythrocytes with up to 8 organisms in a mature inclusion. The initial body resembles that of Aegyptianella pullorum. The tightly packed, sausage-shaped interme...
متن کامل[Mycoplasma].
Mycoplasma 352 Molecular characterization of mycoplasma gallisepticum isolated from chicken and turkey. 353 Pathogenicity of Mycoplasma gallisepticum strains using ELD50 in embryonated chicken eggs. 354 Evaluation of three DNA extraction methods for the detection of Mycoplasma spp. with an MG/MS multiplex real-time PCR method. 356 Use of MG/MS serology and PCR to determine flock status. 357 Exp...
متن کاملDetection of Mycoplasma gallisepticum and Mycoplasma synoviae among Commercial Poultry in Khouzestan Province, Iran
Mycoplasmas are important avian pathogens, which can cause both respiratory disease and synovitis in poultry that result in considerable economic losses to the poultry industry all over the world. The aim of this study was to determine the prevalence of Mycoplasma gallisepticum and Mycoplasma synoviae infections among commercial poultry flocks in ...
متن کاملGuineafowl with a twist: asymmetric limb control in steady bipedal locomotion.
In avian bipeds performing steady locomotion, right and left limbs are typically assumed to act out of phase, but with little kinematic disparity. However, outwardly appearing steadiness may harbor previously unrecognized asymmetries. Here, we present marker-based XROMM data showing that guineafowl on a treadmill routinely yaw away from their direction of travel using asymmetrical limb kinemati...
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ژورنال
عنوان ژورنال: Avian Pathology
سال: 1976
ISSN: 0307-9457,1465-3338
DOI: 10.1080/03079457608418198